... of the cooling circuit. 16. Dimensioned sketch. 17. Manners of the CZO 8,5 S
connexion. 18. Instruction for the electronic regulator CAREL IR 32 V0E000 ...
MANUAL OPERATION AND SERVICE COOLING EGUIPMENT FOR OIL CZO 8,5 S S
F R I G E R A 21, a.s. se sídlem v Praze 5 Provozovna: Zengrova 110, 280 59 Kolín IV tel. ++420/321/754111 fax. ++420/321/721477
CONTENTS 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18.
Utilization Description Technical parameters Handling and storage Assembly Operation Protective facilities Maintenance, carried out by a skilled operator Repairs of the equipment and maintenance Description of the methods, accepted for the elimination or restriction of dangers, caused by the machine equipment Liquidation of the equipment List of basic requirements, other technical requirements, harmonized technical and technological standards Electrical part of the equipment CZO 8,5 Scheme of electrical connexions Scheme of the cooling circuit Dimensioned sketch Manners of the CZO 8,5 S connexion Instruction for the electronic regulator CAREL IR 32 V0E000
1.
Utilization The cooling equipment for oils of the type CZO 8,5 S is destined for the cooling of lubricating oils of machine-tools. Through the cooling of oils and the holding of their temperature at the necessary values there are created the optimal working conditions for the machine-tools in order to reach a high and permanent machining precision. In addition, this equipment can be used for the cooling of other types of industrial oils under the conditions, mentioned in the chapter Assembly. The component of the equipment there is neither the oil circulating pump, nor the oil filter. The equipment is destined for the connexion to the control panel of the machine tool, in which there must be the elements, serving for the protection and switching of the respective circuits and the main switch of the equipment CZO 8,5. The electrical equipment of CZO 8,5 S is adapted to the connexion to machine tools, produced by Messrs. TOS Hulín. The equipment can be used for the frequency of the feeder supply mains of 50 and also 60 Hz, more in detail look at the technical parameters. The equipment CZO 8,5 is destined for the „NORMAL“ spaces according to the art. 320.N4 ČSN standard 33 2000-3 mod. IEC 364-3: 1993.
2.
Description CZO 8,5 Sis of a case type and consists of the following parts: Frame: It is welded of the thin-walled profiles and steel sheets, the covers are produced of the steel sheets. The surface is protected against corrosion by a powder mutt colour with the surface of the crude structure of the shade grey-white RAL 7035. The cooling circuit of the equipment consists of the following parts: The plate exchanger: is produced of the rustles sheets, soldered by a copper solder. The hermetic compressor: of the type MANEUROP MTZ 40 JF. It is a singlecylinder, piston compressor. The electric motor of the compressor, built-in into the compressor shell, is executed for the function in the milieu of the coolant and oil, used in the cooling circuit of CZO 8,5. It is protected against the excessive overheating of the winding by a thermal protection. The thermal protection of the electric motor winding disconnects the electric motor from the function in case of an overheating above the set point and the temperature fall of the winding it switches it again on. The compressor is in the lower part fitted with an oil level gauge, by means of which the operator checks the oil condition and quantity in the compressor. At the normal operation of CZO 8,5 Swill be the oil condition and quantity during the whole life time of the equipment without change es. In the lower part of the compressor shell there is introduced into the opening the heating body with the output of 35 W, which heats the
oil and through this it prevents the coolant absorption by the oil. The compressor is placed on rubber legs that damp its vibrations.
The air-cooled condenser: it is made of copper tubes on which there are slided on the aluminium link plates. Around them there is streaming the air, sucked by the ventilator, which is placed above the equipment in the way that the heated air blow out in the upstream direction. In front of the condenser there is placed the filter, absorbing the air impurities. The thermostatic expansion valve: of the type TES 5, MOP +15o C DANFOSS with the nozzle 01, ensuring the permanent evaporating temperature of +5o C. The electromagnetic valve: of the type EVR 6 DANFOSS that serves for the controlling of the cooling circuit. Collector of the liquid coolant: with the closing valve with the volume of 4 l. The collector is a reserved pressure tank which must have the documentation (passport) according to the standard ČSN 69 0010 and be operated according to the standard ČSN 69 0012. Filter dehydrator: it traps the impurities and the rest humidity in the cooling circuit. Sight glass: it serves at the same as the humidity indicator in the cooling circuit. The water content is indicated by the colour change of the sight glass target in comparison with the colour for the circuit without humidity: DRY – the circuit is without defects, WET – in the cooling circuit there is the humidity, which can cause the destruction of the electric motor of the compressor, it is necessary to take a remedy. Protection against overpressure: of the type KP 5 DANFOSS, which protects the compressor against a too high condensing pressure. Compressor control: of the type KP 1 DANFOSS, which controls the compressor in the case of closing the cooling circuit by the electromagnetic valve, furthermore it protects the evaporator against the too low evaporating pressure, it also blocks the compressor starting in the case of the coolant leakage. Ventilator control: of the type KP 5 DANFOSS, which switches over the ventilator running in dependence on the coolant pressure in the collector and through this it retains the sufficient condensing pressure also at a lower environment temperature; by the reduction of the ventilator revolutions there comes at the same time to the decrease of the equipment noisiness. Coolant R 404 A: it is (at the usual environment pressure and temperature) a colourless gas, non-poisonous, under the normal conditions incombustible inexplosive.
Connecting piping of the cooling circuit: It is made of copper tubes and it ensures the interconnection of the cooling circuit. It is protected on the surface by the polyurethane lacquer. Electrical control panel: It is of the case execution, made of the steel sheet. In the control panel there is placed the terminal board, on which there are brought in the conductors from all electric apparatus, the regulator with the transformer and fuse and furthermore there is situated in the control panel the circuit breaker against overpressure, compressor control and ventilator control. 3.
Technical parameters: Product designation:
CZO 8,5 S
External dimensions (widthxheightxdepth): 1000 x 750 x 700 mm Weight:
140 kg
Voltage Installed power input:
3/PE AC 400/460 V 50/ 4,4 kW/50Hz 5,3 kW/60Hz
Circuit breaker rated current: Controlling voltage Installed performance of the controlling circuit
16 A/C 2/PE DC 24 V 50 W
Output parameters (at the condensing temperature of + 50o C): Cooling output (50 Hz) Cooling output (60 Hz)
8 540 W ± 10 % 10 248 W ± 10 %
Minimal oil through flow: Minimal oil temperature on the outlet from the cooler: Maximal oil temperature on the inlet into the cooler:
30 l / min
Maximal oil pressure on the inlet into the cooler: Pressure loss of the exchanger:
+ 10o C + 60o C
3,0 Mpa 50 Kpa (under the conditions according the chapter 5)
Working environment of the device ( ČSN EN 60204-1) +10oC +32oC
Min. environment working temperature Max. environment working temperature Max. relatively air working humidity Max. altitude for appliance working Cooling circuit Compressor: Oil sort: Oil content: Coolant sort: Coolant content:
80°C 1000 m above see
MANEUROP MTZ 40 JH 4A VE MANEUROP 160 PZ 0,95 dm3 R 404 4 kg
The electric installation is carried out according to the standard ČSN EN 60204-1, covering IP 54. The equipment CZO 7 is destined for the „NORMAL“ spaces according to the art 320 N4 of the standard ČSN 33 2000-3 mod. IEC 364-3: 1993. 3.1 ! ! ! ! ! ! ! ! ! ! ! ! ! 4.
Main performance data on the rating plate: Producer Equipment type Production number Production year Putting into operation (it will be marked after having put the equipment into operation) Mark of the enterprise inspection Coolant weight and sort Rated current of the circuit breaker Total installed poert input Covering (protection) degree Operating voltage + frequency Highest working overpressure Total weight in kg Handling and storage
The equipment is supplied on the wooden baby squares and is covered by a plastic foil and paper-board box. The equipment must be protected against the mechanical damage, humidity, high temperature or frost. The handling is carried out by means of the high lift or pallet truck. At the handling with the equipment there is possible to utilize only the supporting frame.
For the handling with CZO 8,5 S by means of crane systems there are placed on the equipment four eye bolts. The eye bolt must be at the lifting completely screwed in and tightened. The fixing of the equipment must be carried out on all four bolts. Under the hooked on equipment and in its immediate vicinity there must stay no persons.
5.
Assembly
To install and put this equipment into operation may TOS Hulín or the organization that has the authorization from Frigera 21, Joint Stock Company, the producer of CZO 8,5 S.. The appliance CZO 8,5 S is aimed to fitting of machine which then makes its solid and integral part . After the demounting of the wooden baby squares it is possible to fix the equipment by means of the released openings the equipment to the foundation frame, on the oil tank etc. It is also possible to make an additional order of adjustable legs or traversing wheel, two of them with the brake. In case of a stationary fixing of the equipment it is necessary to ensure that it would not be possible to come to the vibration transmission between CZO 8,5 S and the pedestal and on the contrary. There must not be offered any resistance to the sucked and blown out air. The mixing of the sucked and blown out air is not admitted. In front of the suction surface of the condenser it is necessary to let a free space o min. 500 mm. The assembly itself consists in the interconnexion of the electric part and in the connection of the circuit of the cooled oil. The interconnection of the electric part of CZO 8,5 S and of the switchboard on the machinetool solves the customer of this equipment himself. The switchboard of the machine-tool must contain the main switch of the equipment and the elements serving for the protection and the switching of the respective CZO 8,5 S circuits – the function description of the electric installation is contained in the chapter 13.1 Function description of the electric part. Distribution of power circuits – 3/PE AC 400/460 V 50/60 Hz, Distribution of control circuits – 2/PE AC 230/265 V 50/60 Hz, Supply protection 16 A/C. For the supply conductors there are placed in the switchboard and on the CZO 7 equipment three bushings PG 16. The sort and cross section of the conductors must be selected with the respect to the transferred output and the milieu, in which is the equipment placed. After the connexion of the equipment to the electric network it is necessary to check the correctness of the sense of rotation of the condenser ventilator, which must suck the air through the condenser and blow out same up. The cooling equipment CZO 8,5 S is destined for the building-in for cooling the oils into the machine-tools. If fulfils the interference elimination requirements according to the standard
ČSN EN 55011:1999. To the product apply the requirements of the standard ČSN EN 500081-2: 1996 and ČSN EN 50082-2:1997. The verification of these requirements must be carried out after the building-in of the equipment at the machine as whole. The equipment regulator is in a standard way set up on the difference regulation (its description, utilization and sensor location is contained in the chapter 18 Instructions for the electronic regulator CAREL. (In case the user will decide the utilization of the simple regulation (its description, utilization and sensor location at the same place), it is necessary to set up again the regulator parameters on the values, mentioned in the chapter 18.3.1 (procedure of the parameter modification at the same place). The regulator works in a standard way in o C, but it is possible to change at the installation the units to o F, in detail see the chapter 18. The sensor pit for the location of the RT2 sensor at the difference regulation or RT1 at the simple regulation is supplied with the equipment and has the thread of M20x1,5 (see the drawing). The sensor RT2 or RT1 location depends on the art of the chosen regulation (see above) and it is more in detail described in the chapter 18. For the sensor outlet there is placed in the switchboard and on the equipment the PG 7 bushing. The sensor cable and the sensor itself should not be placed in the vicinity of the power conductors, in case of necessity of the joint line should be used a shielded cable, the shielding must be on one side grounded. The cable length to the sensor is approx. 5 m. The RT1 sensor (the dependent sensor of the difference regulation is already located in the equipment on the cooler inlet. The pit for the sensor location outside the equipment See the picture
The inlet and outlet of the cooled oil is connected according to the dimensioned sketch of the equipment, which means in the way, that the oil inlet would be from above and the outlet from below. The outlet sockets of the equipment have the interior thread G 1 1/4“. The sockets are covered by plugs, which prevent the penetration of impurities during the storage and transportation. The equipment is not equipped with the circulating pump of the oil circuit. The minimal oil through flow, which is indispensable for the perfect equipment function is 30 l/min. On the oil inlet it is necessary to insert an oil filter, which will prevent the entry of impurities into the exchanger. The filter must be chosen in dependence on the contamination
of the oil to be cooled, when it is necessary to be aware of the fact the maximal diameter of the impurity which will pass through the exchanger, is 0,5 mm. The maximal oil pressure in the oil circuit of the equipment must not exceed 1,0 Mpa. The pressure loss of the plate exchanger is approx. 50 kPa(this is valid for the oil of the viscosity class ISO VG 46 at the oil temperature on the inlet of +30o C and its through flow of 30 l/min. The equipment can be used for the cooling of different type of industrial oils, especially the greasing ones, but also of hydraulic, motor, transmission and other ones, at the fulfilment of the above mentioned requirements. The temperature of the oil solidification should be not higher than –15o C.
The schemes of possible variants of the interconnexion of the oil circuit with the machine are in the annex – see The connexion arts. The fastening holes, the inlet and outlet of the oil and air – see The dimensioned sketch.
The cooling output of the equipment is 8 540 W± 10 % at 50 Hz or 10 248 W ± 10 % at 60 Hz frequency of the electric network. This output is indicated at the condensing temperature of +50o C, which corresponds to the environmental temperature of approx. +41o C. The
maximal environmental temperature for the equipment is +50o C, to which there corresponds the condensing temperature of approx. +58o C. The cooling output must be corrected in dependence on the change of the condensing temperature according to the graph. The condensing temperature is in dependence on the air through flow through the condenser by 8 till 15o C higher than the environmental temperature. The correction coefficient of the cooling output of CZO 8,5 S in dependence on the change of the condensing temperature
See the picture
A[ - ] correction coefficient tk [o C] condensing temperature pk [bar] condensing temperature The CZO 8,5 S equipment is assembled with the modern machine tools mostly in the airconditioned spaces. At the full cooling output there must be calculated with the fact that through the condenser there passes about 6000m3 of air in an hour, warmed till by 10o C above the temperature, at which it enters into the condenser space. This means that the condensing warmth with the value about 12 kW will be put into the air-conditioned space and here it will be to the detriment which is on principle bad and not admissible. Therefore the producer, in the case of impossibility to utilize the condensation warmth, recommends to the
CZO 8,5 S customers to discharge the heated air from the condenser to the places where it will not be to the damage. It is not admissible to the discharged air to limit the space, which is given by the equipment construction.
6.
Operation
The personnel operating this equipment, must be acquainted with this „Instruction for operation and maintenance“. The operation safety is ensured by the performation of the protection against dangerous contact voltage in the sense of the standard ČSN 33 2000-4-41. The CZO 8,5 S may be in operation only at the operation of the oil circuit. Under this condition there controls the equipment run the regulator, which is automatic according to the set up values and this by the operation of the electromagnetic valve. The CZO 8,5 S may by operated only with the assembled equipment covers. By the disassembly of the covers of the machine space there exists the danger of injury from the rotating vanes of the ventilator. In addition to this, after removing the covers the air does not pass through the condenser and the equipment is resultantly switched off by the overpressure circuit breaker. The whole handling in the machine space of the equipment must be carried out only after disconnecting the equipment from the electric energy by switching off the main switch lf CZO 8,5, located on the switchboard of the machine tool. The equipment operator can set up on the regulator the temperature, at which the cooling equipment switches off and this according to the user’s necessities. The switching off temperature of the equipment can be changed either by the change of the temperature
difference St1 at the difference regulation or by the change of the set up switching off temperature at the simple regulation. The procedure of the change of temperature difference and the switching off temperature is more in detail described in the chapter 18. The temperature of the oil, leaving the equipment, should not descend under +15o C – there exists the danger of the output reduction and the possibility of the congelation of oil or water from the oil in the exchanger.
In the case that the supply of electric energy to the CZO 8,5 S equipment is completely interrupted for a longer time (which means that the equipment is not in a ready state, which is described in the chapter 13.1 – Function description of the electrical part), it is necessary, before the repeated switching on to leave the equipment with a switched on heating element of the compressor at least during three hours, that there should come to the oil heating in the compressor and liberation of the coolant, contained there-in. 6.1
Information about the prohibited utilization
The CZO 8,5 S equipment may be used only according to this Instruction for operation and maintenance. 6.2
Information for the emergency situations
In case of a fire of the equipment it is necessary to disconnect same according to the possibility from the source of the electric energy by switching off the main switch of CZO 8,5 S on the switchboard of the machine tool and proceed according to the general fire regulations.
7.
Protective aids
At the operation and maintenance of the equipment it is necessary to proceed always in the way that it whould not come to the injury of the operating persons. The delivery piping of the compressor can have at the operation the temperature till 100o C, for which reason it is necessary at the handling in the machine space to use the protective gloves. 8.
The maintenance, carried out by the trained operator
The user must not interfere with the cooling and electrical parts of the equipment. It is not admissible to interfere in any way with the setting up of the regulator. (with the exception of setting up the temperature difference and switching difference at the difference setting up of the regulator and the set up switching off temperature and the difference at the simple setting up of the regulator (or the pressure circuit breakers.) The CZO 8,5 S maintenance consists in the checking of the correct function of the equipment according to this instruction and in keeping the equipment in the cleanness.
During the equipment operation it is necessary at least 1x a month (according to the contamination of the surrounding environment) to check the cleanness of the air filter and the vanes of the air condenser. If it comes to the fouling of the condenser vanes, it is necessary to clean same either with an industrial exhauster or sweep out, never with sharp objects, because there could come to the damage of the equipment. The fouled filter can be beated-out or blown-out with an air stream. The foulder or choked condenser has a consequence the increase of the condensing pressure and the switching off of the equipment by the overpressure circuit breaker. The deaeration of the oil circuit can be carried out by the loosening of the connection on the inlet into the equipment (above). The oil discharging is carried out by screwing off the connection on the outlet from the equipment (below and the oil is left to flow-out freely.
The whole maintenance and cleaning inside the machine space of the equipment (which means after removing the covers of the machine space) must be carried out after disconneting the equipment from the electric energy by switching – off the main switch of the equipment, located on the switchboard of the machine tool. By disasembling the covers of the machine space during the running of the equipment there exists the danger of injury from the rotating ventilator blades!
9.
Repairs of the equipment and the maintenance
The repairs of the CZO 8,5 S may carry out the firm Frigera 21, Joint Stock Company, Kolín or the organization , authorized by the CZO 8,5 S producer. The user must not interfere with the cooling and electrical parts of the equipment. It is not admissible to interfere in any way with the setting up of the regulator. (with the exception of setting up the temperature difference and switching difference at the difference setting up of the regulator and the set up switching off temperature and the difference at the simple setting up of the regulator (or the pressure circuit breakers.) The repairs and the setting up of the cooling circuit of the equipment may carry out only the specialized cooling assembler. At least 2x in a year it is necessary to check the oil quantity in the compressor. The oil level must pass through the oil level indicator glass. In case there would come to a decrease or change of the oil condition, it is necessary to call a specialized asembler and there must be found our reason and this removed, eventually there must be completed the oil into the compressor in the way that the oil level passes through the oil level indicator.
In case there would come to the fouling of the cooler, it is possible to try to clean it by a backwashing. In case there would come to a frequent switching off of the compressor by thermal protection of the winding of the compressor electric motor (the repeated switching on can last till three hours), it is necessary to take this a defect and to invite the specialized assembler for finding out the reason and for its removal (the winding resistance of the electric motor of the compressor is 4,56Ω ) The maintenance and repairs of the electric equipment in the inland may be carried out only by an authorized person with the qualification according to the decree No. 50/78 Sb §6 and abroad according to the respective standards. Maintenance of the electric part: -
once in a year to check the tightening of the connecting bolts and terminal boards, on the place with vibrations it is necessary to carry out same more frequently. The checking of the state of the interconnecting conductors and this both inside the equipment and the connecting parts. The damaged conductors must be replaced by the new ones. To check the cleanness and the sealing inside the switch board, in case of contamination to dry out or clean by the pressure air. The equipment of contamination to dry out or clean by the pressure air. The equipment contains the apparatus fuse FU, which serves for the protection of the feeder transformer. The fuse has the value T 0,1 A. It is located in the switch board of the equipment and in case of interruption it is necessary to exchange some.
The whole maintenance and cleaning inside the machine space of the equipment (which means after removing the covers of the machine space) must be carried out after disconneting the equipment from the electric energy by switching – off the main switch of the equipment, located on the switchboard of the machine tool. By disasembling the covers of the machine space during the running of the equipment there exists the danger of injury from the rotating ventilator blades!
9.1
The Revision plan of the coolant collector (reserved stable pressure vessel according to the standard ČSN 69 0010 ) elaborated according to the standard ČSN 69 0012 TNS – operation requirements.
The revision of the pressure vessels may carry out the revision technician of the pressure vessels with the respective authorization.
INITIAL REVISION OPERATION REVISION
-
according to the article 90 according to the article 91 the first operation Revision within two weeks after the opening of the pressure vessel, further operation revisions at least once in two years.
INTERNAL REVISION
-
according to the article 95 it must be carried out only in the cases, determined in the article 94 b) before the reconstruction or thereafter or after the repairs of a greater extent and in the article 94g) – in case the vessel has been put aside for the reasons, mentioned in the article 81. The execution of the internal revision according to the article 107 till 115 and the checking of the wall thickness by ultrasound. The thickness test should be carried out at the highest operation overpressure and the eventual untightness we recommend to detect by the coolant leakage detector (the pressure increase – see The instruction for testing the overpressure circuit breaker).
PRESSURE TEST
- according to the article 121d) the pressure test will be carried out only after a major overhaul. According to the article 121 f) at the vessels, which cannot be after the test reliably drained off, which are a part of the equipment and must be reliably dry, will be carried out instead of a pressure test a pneumatic tightness test and the test of the wall thickness by ultrasound. In the case, when the collector is soldered on the piping, the collector should not be disconnected and there should be proceeded according to the article 121h)-the tightness test and the ultrasound test. The pressure test can be also carried out by a dry air or dry inert gas under the conditions, mentioned in the article 55 of the standard ČSN 14 0646 with respect to the article 121 f) of the standard ČSN69 0012.
In case that there comes at the vessel to a crack, untightness, deformation, wall reduction etc., the collector should not be repaired but replaced by a new one. The pressure test at the cooling equipments must not be carried out by water (it is difficult a complete elimination, corrosion) or by oil etc.) in case of an imperfect elimination the possibility of mixing with the compressor oil and its deterioration with the resulting failure of the cooling circuit or compressor destruction.) Further duties, emanating from the operation of pressure vessels and the detailed wording of the above mentioned is contained in the standard ČSN 69 0012.
9.2
Instruction for the function testing of the overpressure circuit breaker as a reserve safety device: The purpose of this test is the examination of the overpressure circuit breaker as a safety device of the coolant collector – of the stable reserved pressure vessel against overloading: The test may be carried out only by a cooling mechanician. The procedure at the testing: 1. To close the manometer connection on the collector, to loosen the connection of the ventilator control on the connection on the closing valve of the collector (there must not escape any coolant) and to connect the checking manometer. 2. To open the manometer connection of the closing valve maximally by two revolutions. 3. During the equipment run to cover the air condenser in order to make impossible the air suction through same or disconnect the ventilator for the increase of the condensing pressure 4. To carry out the checking of the switching off of the overpressure circuit breaker which must be always set up for the value of the highest working overpressure, mentioned in the passport of the pressure vessel and of the value of the highest working overpressure of CZO 8,5. The overpressure circuit breaker must switch off at the pressure value equalling to the highest working overpressure. The setting up of the overpressure circuit breaker may be carried out only by a qualified worker of the cooling equipments (the cooling mechanician). 5. After the checking to remove the condenser covering or to connect the ventilator. To close the manometer connection on the closing valve and disassemble the checking pressure gauge. (there must not escape the coolant,) to connect the ventilator operating device, to tighten and to open the connection by two revolutions. The setting up and testing of the overpressure circuit breaker is carried out at the equipment producer after the assembly of the cooling circuit and its filling up with the coolant. The checking of the switching off of the overpressure circuit breaker must be carried out in the terms not longer than one year.
10.
Description of the methods, accepted for the elimination or restriction of the dangers, caused by the machine equipment.
*
The danger of the excessive pressure in the cooling circuit –
the putting into operation , the filling up the coolant, the setting up the repair carries out Frigera 21 Joint Stock Company or the authorized person, nominated by the organization.
-
the setting up of the overpressure circuit breakers and the checking of their operation carries out the authorized worker according to the instruction.
-
the observation of the maximal temperature of the environment of + 50o C
-
the revision of the pressure vessel (coolant collector) may be carried out by the authorized technicians of the pressure vessels
*The danger from the moving parts - there should not be removed the covers of the machine space nor the ventilator cover and in the handling case in the machine space there should be switched off the main switch, located on the switch board of the machine tool. * The danger of the coolant escape -
the equipment must be located on such a place, where there is ensured the sufficient ventilation in an average case.
* The vibration danger - the vibrations are minimalized by the compressor placing on vibration blocks *The injury danger by the electric current - the equipment fulfils the fixed electric standards - the assembly , maintenance and repairs of the electric devices in inland may be carried out only by an authorized person with the qualificatioin according to the Decree No. 50/78 Sb §6 and abroad according to the respective standards. *The danger from the influence of high temperature - the equipment should be operated only with the assembled covers - the compressor delivery piping can have the temperature till 100o C; at the handling in the machine space it is therefore necessary to use the protective gloves. *Generally - to carry out the cleaning in conformity with the instruction - to use at the repairs the spare parts, recommended or approved by the equipment producer.
10.1
The setting up of the overpressure circuit breaker
The setting up of the overpressure circuit breaker on the equipment is possible max. till the value of the highest working overpressure of the equipment (which means 2,8 Mpa). Overpressure circuit breaker SP 31 10.2
Switching off pressure 28 bars
difference 6 bars
The setting up of the compressor and ventilator operating device
Compressor operating device SP 32 Ventilator operating device SP 30
Switching on pressure 3,6 -4 bars (-6o)
difference 2 bars
switching on pressure 20 bars
difference 3 bars
10.3 Setting up of the regulator CAREL for the difference regulation (the standard setting up) Parameter
Code
Set up value
Temperature difference Switching difference Operation regime Min. time between the outlet switching on Min. time of switching off the Outlet Min. time of switching on the outlet Outlet state at the sensor Defect Display of NTC inlets Sensor calibration Temperature units Compensation regime Low-temperature absolute alarm High-temperature absolute alarm Alarm difference Alarm delay Setting of the digital input
St1 P1 C0
-0.2 o C 0.5 o C 1
C7
5 min.
C8
1 min.
C9
0 min.
C10 C13 P14 C18 C19
0 0 0.0oC 0 1
P25
9o C
P26 P27 P28 C29
60.0 o C 2.0 o C 2 min. 4
(the setting up of other parameters see the chapter 18). 10.4
Setting up of the regulator CAREL for the simple regulation Parameter
Code
Switching off temperature St1 Switching dirfference P1 Operating regime C0 Min. time between the outlet C7 switching on Min. time of the switching off C8 the outlet
Set up value 20.0 o C 2.0o C 1 5 min. 1 min.
Min. time of switching on the outlet Outlet state at the sensor Defect Display of NTC inlets Sensor calibration Temperature units
Compensation regime Minimal St1 value Maximal St1 value Low-temperature absolute alarm High-temperature absolute alarm Alarm difference Alarm delay Setting of the digital input
C13
0
C10 C13 P14 C18
0 0 0.0oC 0
C19 C21 C22
0 10.0o C 55.0o C
P25
9.0o C
P26 P27 P28 C29
60.0 o C 2.0 o C 2 min. 4
(the setting up of other parameters see the chapter 18).
11.
Equipment liquidation
After the equipment life the user will ensure a professional liquidation in the Czech Republic according to the standard ČSN EN 378-1 and abroad in conformity with the valid standards. 12.
The lists of basic requirements, other technical requirements, harmonized with the technical standards:
12.1 The appreciation of the conformity of the device for cooling the water of CZO 8,5 S has been carried out according to: The Government decreee 168/97 Sb., by which there are stipulated the requirements for electric devices of low voltage. The Government decreee 169/97 Sb., by which there are stipulated the requirements for the products from the point of view of their electromagnetic compatibility. 12.2 The list of basic requiremenets The equipment CZO 8,5 S fulfils:
12.3
- the requirements 1,2,3 mentioned in the annex No. 2 of the Government decree 168/97 Sb, by which there are stipulated the technical requirements for electric devices of low voltage. - the requirements in the annex of the The Government decreee 169/97 Sb., by which there are stipulated the technical requirements for the products from the point of view of their electromagnetic compatibility Other technical requirements
The law No. 86/95 about the protection of the ozone layer of the earth. 12.4 The CZO 8,5 S equipment fulfils the haromonization of the Czech technical standard and the Czech technical standard. The standard ČSN EN 60204-1:2000 The safety of the machine equipment – Electric devices of the machines – Part 1: General requirements The standard ČSN EN 61000-6-2: 2000 The electromagnetic compatibility (EMC) - Part 6-2: Basic standards – The resistance for the industrial environment. The standard ČSN EN 50081-2: 1996 The electromagnetic compatibility. The general standard, concerning the radiation. Part 2: The industrial enviroment. 12.5 Further harmonization of the Czech technical standard and the Czech technical standards which were used at the designing of the CZO 8,5 S equipment.
The standard ČSN EN 292-2: 1994 The safety of machine equipments. The basic terms, general principles for projecting. Part 2: Technical principles and specifications. The standard ČSN EN 294: 1993 – The safety of machine equipments. The safe distances for prevention the contact with dangerous places by upper limbs The standard ČSN EN 378-1: 2001 – the cooling equipment and thermal pumps – The safety and environment requirements – Part 1: Basic requirements, definitions, classification and choice criteria. The standard ČSN EN 14 0645:1981 Small stable cooling equipment and cooling equipments for the road transports – The safety requirements The standard ČSN EN 292-1: 1994 The safety of the machine equipments. The basic terms, general principles for the projecting. Part 1. The basic terminology, methodology. The standard ČSN voltages.
IEC 38: The electromagnetical regulations. The standardized IEC-
The standard ČSN 33 0165: 1992 The electromagnetical regulations. The conductor marking by colours or figures. The executing regulation. The standard ČSN EN 60446: 2000 The basic and safety principles at the operation of machine equipments. The conductor marking by colours or figures. The standard ČSN 33 0360: 1990 the electrotechnical regulations. The connection places of protective conductors on the electrical objects. The standard ČSN 33 2000-4-41: 2000 – the electrotechnical regulations.The electrical equipments. Part 4: Safety. The chapter 41: The protection against injury by the electrical current. The standard ČSN 34 3100: 1967. The electrotechnical regulations ČSN. The safety regulations for the operation and work on electrical equipments. The standard ČSN 34 3102: 1967 The electrotechnical regulations ČSN. The safety regulations for the operation and work on electrical machines. The standard ČSN 34 3103: 1967 The electrotechnical regulations ČSN. The safety regulations for the operation and work on electrical apparatus and switch boards. The standard ČSN 34 3108: 1968 The electrotechnical regulations ČSN. The safety regulations about the handling with the electrotechnical equipments, with which must be the workers acquainted. The standard ČSN 33 1500: 1990 The electrotechnical regulations. The revision of electric equipments. The standard ČSN 34 5611: 1970 The basic tests of the safety of electrical objects. The electrical tests of electronical objects. 13.
The electric part of the CZO 8,5
This equipment is destined for the „NORMAL“ spaces, as mentioned in the technical parameters. It is designed as stable. The CZO 8,5 S equipment cannot work independently. It is destined for the connection to the switch board of the machine tool. By means of the switch board some circuits of CZO 7 are interconnected with the control system of the machine tool. In the mentioned switch board of the machine-tool must be the elements, serving for the protection and switching on of the respective circuits, as well as the main switch as it is required by the mentioned standards. In the switch board there are located: the terminal board, on which there are brought in the conductors from all apparatus, regulator of the temperature control, set up for the differential or simple regulation, the feeder transformer, the overpressure circuit breaker and the compressor and ventilator controls. The distribution of power circuits – E/PE AC 400/460 V 50/60 Hz, The distribution of power control - 2/PE AC 230/265 V 50/60 Hz, the current protection 16 A/C.
The electrical installation has been carried out according to the standard ČSN EN 60204-1 the protection IP 54. 13.1 The function description The compressor run is controled by the operating device of the compressor and protected by the overpressure circuit breaker. The electromagnetical valve is controlled by the regulator. The condenser ventilator which is controlled by the operating device of the ventilator, must always run with the compressor, on the contrary the compressor heating heats always when the compressor is at standstill. The ventilator operating device according to the condensing pressure switches over the ventilator motor from the star of the triangle(at the pressure growth) and through this it regulates its revolutions. The compressor is switched off by the compressor operating device and also by the overpressure circuit breaker, in case there comes to the pressure increase. In case the oil circuit is out of operation, the electromagnetical valve must be closed. By closing the electromagnetical valve there is interrupted the coolant inlet into the evaporator. However, the compressor works and exhausts the coolant into the collector for such a time till there comes to the pressure decrease on the suction side to the switching off value of the compressor operating device. This then switches off the compressor. It is possible , that the pressure on the suction side increases again and the compressor operating device switches on the compressor, which however after the exhaustion and pressure decrease in the suction switches off the compressor again. This can be repeated also several times. This condition has the denomination „the reserve“ and the producer recommends to use same also in the time of longer interruption, because after the repeated switching on of the cooling the compressor is protected against the liquidity impacts and the unsuficcient lubrication. After switching off the reserve condition the heating element of the compressor is still in activity, which heats the oil and prevents the coolant absorption by the oil. This heating element is always in activity, when the CZO 8,5 S is connected to the source of the electric energy. In case the supply of electrical energy into the equipment is completely interrupted for a longer time, it is necessary at the repeated switching on, to let the equipment with the switches on heating element at least for 3 hours, in order to come to the oil heating and coolant liberation, contained therein. The maximal number of compressor starting is 12 one hour, the higher number of startings shortens the compressor life. The recommended maximal run time is 5 minutes and the rest time also 5 minutes. In the equipment there is installed the electronic regulator CAREL IR 32 V0E000 and this in a standard way in the setting up for the differential regulation. The client can, according to the necessity, set up the regulator for a simple regulation. The regulator, set up for the differential regulation, is destined for the regulation of the temperature differences, sensed by the thermistor sensors. It can be used on the place where it is necessary to keep the set temperature difference between two places, whereby the temperature of one of them (the controlling one) changes arbitrarily within the extent of the working temperatures and the regulator ensures that the temperature of the second place (the depending one) watches it with the set difference. In the concrete connection of the CZO 7 equipment this means, that the second (dependent) temperature is maintained on the same level, as the controlling temperature. The regulator, set up on the simple regulation is destined for the regulation of a certain temperature in the set up boundary -–line (difference). It is used on the place where it is necessary to reach the set temperature and to maintain it in the set
boundary-line. In the concrete connection of the equipment this means, that the equipment cools the oil to the set temperature (+20o C) and this then maintains in the set difference (2o C). For a more detailed description see the chapter 18. The instruction for the electronic regulator CAREL IR 32 V0E000. For the protection of the feeding transformer of the regulator there serves the apparatus fuse T 0,1 A. To fulfill the condition of EMC the electromotors, spool contactor and spool of el-magnetic valve are hampered by parts RC, FV an RC1 To protect the electromotors of compressor and condnsator ventilators are aimed engine breakers QF30 and QF33. To protect the regulator is aimed safety fuse FU1-T-0,1 A Setting of the engine breakers Compressor ……………………… QF30……………………8 A Condenser ventilator ……………...QF33………………… 0,8 A It is possible to conect the circuit of error signalisation to the grips 110 and 111, this alarm indicates disconection of power circuit of compressor power supply and ventilators condenser. This circuit will signal the error without differing, which security element (QF30, QF33) disconected the protected circuit. It is possible to connect the signalisation of compressor regulator positionto SP32 the grips 1027. It is possible to connect the signalisation of error status over-presure breaker SP 31. Potentional – free contact which is controlled by operating of oil circuit is connected to grips 112 and 113.
14. The scheme of the electric connexion of CZO 8,5 S see the picture on the original
Drawing - in the upper right corner of the sheet
14.2
The legend for the electric connexion of CZO 8,5
EH 6
the compressor heating of 35 W – it is a compressor component
FU 1
the apparatus fuse T 0,1 A
FV
interference part of spool clamper 3RT19 16 –1BB00 Siemens
KM 31
main clamper
M23
the electric motor of the compressor MTZ 40 JH 4A VE MANEUROP IP 55
M 24
the electric motor of the condenser ventilator VDK.41.6P IP 54 ISO K1.F
PG
filling bushing
RC
interference part of electromotor 3RT19 16-1PA2 Siemens
RC1
interference part of spool LA9-D09980 Schneider
QF30
engine breaker M23 3RV10 11- 1HA10 Siemens
QF33
engine breaker M24 3RV 10 11 –0JA10 Siemens
Rt1
the regulator sensor NT 030W000 CAREL
RT 2
the regulator sensor NTC060W000 CAREL
SP31
overpreasure breaker PS3-W6S Alco
SP32
the operating device of the compressor PS3-W1S Alco
ST1
the regulator IR 32 V0E000 CAREL
TC1
the feeding transformer of the regulator JBC E 2025 – 194 265/24V
XT117
the terminal board of the equipment
YV1
the electromagnetic valve of the cooling – the coil EVR 6 18Z6732 DANFOSS IP 67
ZEIHL-ABEGG FB0520-
15.
The scheme of the cooling circuit
15.1 The legend to the scheme of the cooling circuit of CZO 8,5 1.
The sealing compressor
2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15.
The air condenser The coolant cooler The filter – dehydrator The electromagnetic valve The coolant sighthole The thermostatic expansion valve The plate evaporator – oil cooler The operating device of the compressor The overpressure circuit breaker The operating device of the ventilator The vibralex The condenser ventilator The heating element of the compressor The regulator sensor
A) B)
oil inlet oil outlet
. 16.
The dimensioned sketch
A – the oil inlet G 1 1/4“ B – the oil outlet G 1 1/4“
C – the air inlet D – the air outlet
17.
The connexion arts of CZO 8,5 Machine
Vessel 1. In the series with the machine cirucuit, the oil cooler on the inlet into the machine
Machine vessel
2. In the series with the machi
3. ne circuit, the oil cooler on the outlet from the machine
Machine vessel 4. Parallelement with the machine circuit. This connexion is suitable for the case when on the machine there is the pump with through flow lower than 30 l/min. or from the vessel there are feeded more machine with the different oil consumption. A,B – the sensor location for C – the sensor location for the simple regulation the differential regulation For the differential regulation there are appropriate all connexions, for the simple regulation the connexion 2 and 3. The connexion 1. is appropriate in the case, when the thermal output of the machine is identical or a little lower than the cooling output of CZO and the coolness consumption is equable. The connexions 2. and 3. are appropriate in the case when the thermal output of the machine is lower that the cooling output of CZO or the coolness consumption is not equable with the possible short-time consumptions of the higher output, than the CZO output is – in this case must be the sufficient quantity of oil in the vessel for the coolness accumulation.
18.
The instruction for the electronic regulator CAREL IR 32 V0E000
18.1
The description of the regulator function for the differential regulation
The differential regulation is in a standard way set up on each supplied equipment. The regulator in this setting up is destined for the regulations (maintenance) of the set up difference of two temperatures, sensed by its two sensors, marked RT 1 and RT 2 (see the electrical scheme). The sensor RT1 senses the outlet temperature of the liquid, which is marked Tz (the dependent temperature). This sensor is already located on the outlet from the plate exchanger. The sensor RT2 senses the independent temperature, which is in the further text marked with the symbol Tř (the control temperature). It is located on the place where it is appropriate for the equipment run, e.g. the temperature sensing in the machine-tool bed or the sensing of the environmental temperature etc. The equipment cools the oil in the way that there would be maintained the constant difference (St1) between two places, the temperature of which there sense two sensors RT 1 and RT 2. After reaching the set diffference St1 (St1=Tz – Tř ) the cooling is switched off. After the difference change by the set up difference (P1) the cooling is switched off again. After the difference change by the set up difference (P1) the cooling is switched on again. Let us mark the temperature, sensed by the sensor RT1 as an independent one Tz and the temperature , sensed by the sensor RT 2 as a controlling one Tř, then: The cooling switches off at Tř*Tz + St1 The cooling switches on at Tz ]Tř + St1 + P1 This means that at the set up temperature difference of 0o C and at the set up switching of difference of 2o C the following regulation logic: The cooling switches off at Tz* Tř +(-0.2) also at Tz *Tř –0,2 The cooling switches on at Tz] Tř +(-0.2) +0.5 also at Tz] Tř +0,3 The determined temperature difference St1 can be changed within the boundaryline of –50 till + 90o C, which means that the set up temperature difference can be both positive (Tz is higher than Tř) and also negative (Tz is lower than Tř). The set up switching on difference (P1) can be changed within the boundary limit of 0,1 till 99,9o C. The switching on of the regulator relay (the switching on of cooling ) is signalized by the flicking of the LED diode reverse on the regulator. On the regulator display there is displayed the depending temperature, which means the temperature of the cooled oil, sensed by the sensor RT1. The display of the control temperature, which means e.g. of the machinetool, sensed by the sensor RT 2, is possible by pressing down the push button „downward arrow“ on the regulator and this during the pressing down time of the push button.
In case that there come the conditions of one of the alarms, the regulator display intermittently displays the temperature Tz and the respective code of one of the alarms Er0, Er1, Er2, Er4 and Er5. The alarm description see farther. 18.2
The description of the regulator function for the simple regulation The regulator in this setting up is destined for the regulation of a certain temperature, sensed by the sensor RT1 in the set up boundary-line. The sensor RT1 (which is at the standard delivery located in the pit on the outlet from the place exchanger (should be in the best way located in the pit in the vessel with the cooled oil (if it is necessary that the sensor, for being located in the vessel, should have a longer cable, it is possible to interchange both NTC sensors). For simple regulation it is possible to utilize also its location on the outlet from the exchanger, but then must pass the oil through the exchanger permanently, which means also after having cooled the oil. The sensor RT 2 does not participate at the simple regulation setting in the cooling control. But it is possible to utilize it for the measuring of any temperature and for its displaying on the regulator display by pushing down the push button „downward arrow“ and this during the pushing down time of the push button. The equipment cools the water to the set up temperature (St1) which is sensed by the sensor RT1. After having reached this temperature the cooling is switched off. After the temperature increase by the set up on difference (P1) is the cooling switched off again. This means, that at the standard setting up, the water cooling to +20o C and the maintenance of its temperature within the boundary -–ine of +20o till +22o C. The set up temperature (St) can be changed within the boundary-line of +15 till +55o C. The set up switching on difference (P1) can be changed within the boundaryline of 0,1 till 99,9o C. The switching on of the relay contact of the regulator (the cooling switching on) is signalized by the flicking of the LED diode direct on the regulator display. On the regulator display there is displayed the temperature, sensed by the sensor RT1. In case that there come the conditions of one of the alarms, the regulator display intermittently displays the temperature Tz and the respective code of one of the alarms Er0, Er1, Er2, Er4 and Er5. The alarm description see further. 18.3
Regulator operation of CAREL IR 32 V0E000
18.3.1
The displaying (setting up) of the parameters St1 and P1.
18.31.1
The displaying (setting up) St1
! ! ! !
18.3.1.2 -
To push down the push button SEL for approx. 1 sec., so long as on the regulator display appears the symbol St1. After the button release appears the flicking existing (set up) value St1. In case there is necessary to change this value, it is possible to do it by the push button ∆ (it increases the value) or ∇(it reduces the value). In case that the St1 value has not been changed, it is not necessary a further handling and the regulator itself returns to the basic regime. In case that there has been set up a new value St1, it is necessary to push down for a short time the SEL and through this to confirm the newly set up value and the return to the basic regime.
The displaying (setting up) P1
to push down the push button PRG/mute for approx. 5 sec. – so long as on the display does not appear the symbol P1 to push down for a short time the SEL – on the display there appears the set up value of the parameter P1.
a) in case that there is not changed the parameter, to push down for a short time the PRG/mute for the return to the basic regime. b) By the push button ∆ (it increases the value) or ∇(it reduces the value)/can be changed the value P1 to the required size c) To push down for a short time the PRG/mute for the confirmation of newly set up value and return to the basic regime of the regulator. 18.3.2
The error reporting – the alarms
Code Description Er0 error of the sensor RT1
Cause interrupted, shortcircuited or defectuous sensor
Er1
interrupted, shortcircuited or defectuous sensor
Er2
error of the sensor RT2 (only at the differential setting up) memory error of the regulator
Er4
the high temperature alarm
Er5
the low temperature alarm
the interruption of the supplying during the parameter setting up, the memory error there was exceeded the set up alarm temperature of the sensor RT1 there was exceeded the set up alarm temperature of the sensor RT1
Troubleshooting to check the connexion, the sensor exchange the sensor NTC=10,0kΩ by 25o C to check the connexion, the sensor exchange to carry out the reset - see farther, in case that the error Er2 persists, the regulator is damaged to reduce the temperature to increase the temperature
The oil temperature going out from the equipment, must not be lower than + 15o C. The oil temperature going into the equipment, should not be higher than +60o C. At the temperature decrease to +14o C and less (P25) there is proclaimed the low temperature alarm Er5. At the temperature increase to +60o C and less (P26) there is proclaimed the high temperature alarm Er4. The alarm delay (P27) which means the time, during which must be the temperature in the alarm zone, in order to proclaim the alarm, are 2 minutes. The switching on difference of both alarms are 2o (P28). In case of the alarm proclamation Er0, Er1, Er2 or Er3 the regulator ceases to control the cooling (undoes the relay contact). As soon as the reason of the error reporting ceases to exist, the regulator returns automatically to the normal operation. But it is necessary to remove from the display the alarm code by a short time pushing down of the push-button PRG/mute. The alarm proclamation Er4 or Er5, has no influence on the regulator function and when the causes cease to exist/the temperature returns to the allowed boundary-line of +15 till 60o C the alarm code automatically disappears.
18.3.3
The parameter table
The user may change only the parameters St1 and P1. Any change or interfering with other parameters is not admissible for the user-with the only exception – the new setting up of the parameters after the regulator reset. 18.3.3.1 The survey of the configuratable parameters Code
Description
St1
the temperature difference the switching off temperature
C0
The setting up for the regulation the differential one the simple one -0.2 20.0
the operational regime (the function mode) of the regulator 1
1
P1
the switching on difference (hysteresis)
0.5
2.0
C4*
the compensation coefficient
0.5
0.5
C5
the regulation type
0
0
The outlet parameters
C6*
the delay of the switching on of the two different outputs
5 sec.
5 sec.
C7
the minimal time between two switchings on of the same output
5 min.
5 min.
C8
the minimal time of the output switching off
1 min.
1 min.
C9
the minimal time of the output switching on
0 min.
0 min.
C10
the output state at the sensor error
0
0
C11*
the output rotation
0
0
C12*
the time PWM of the cycle (the pulse wide modulation)
20 sec.
20 sec.
The sensor parameters C13
the display NTC of the NTC inputs
0
0
P14
the sensor calibration
0.0
0.0
C17
the constant of the noise filter of the sensor 5
5
C18
the temperature units 0=oC 1=oF
0
0
C19
the compensation regime
1
0
The main settings up – set point C21
the minimal value St1
-50
15.0
C22
the maximal value St1
90.0
55.0
C23*
the minimal value St2
-50
-50
C24*
the maximal value St2
90.0
90.0
the low temperature absolute alarm
9.0
9.0
The alarms P25
P26
the high temperature absolute alarm
60.0
60.0
P27
the hysteresis alarm
2.0
2.0
P28
the alarm delay
2 min.
2 min.
C29*
the setting up of the digital input 1
4
4
C30*
the setting up of the digital input 2
0
0
C31*
the output state at the alarm from the digital input
0
0
The further ones C32*
the regulator address for the series line
1
1
C33*
a special operation regime – no modification
0
0
C50
the setting up of the access to the parameters
4
4
C51*
the code for the activation by a remote actuator
0
0
*- the parameters which are not active for the given setting up. 18.3.4
The configuration of other parameters
-
the configuration St1 according to the chapter 18.3.1.1
-
the configuration of other parameters:
# to push down the push button PRG /mute and SEL, simultaneously, as long as on the regulator display does not appear 0 # by means of the push button ∆ or ∇ to set up on the display 77 (by a permanent pushing down of the push button the changes are accelerating). The number is the password, enabling the access to the parameters. # to confirm the password 77 by a short pushing down of SEL and on the display there appears the code of the first parameter C0. # top push down for a short time SEL and on the display there appears the preset up value of the C0 parameter # this value can be changed by means of the push buttons ∆ or ∇ # to confirm the newly set up value by a short pushing down of SEL, on the display there will be displayed again the C0 code
# the shift to further parameters should be carry out by a short time pushing down of ∆ - the parameter shift in the way as they were mentioned in the table or ∇ the parameter shifting backwards. # by a shorttime pushing down of SEL to display the preset up value of the chosen parameter. # by means of ∆ or ∇ to set up the required value # by means of SEL to confirm the newly set up value # when the respective parameters are set up on the required value, to push down for a short time the push button PRG/mute for the record of all new values in the memory of the regulator and the return to the basic regime
18.3.5
THE REGULATOR RESET
# to carry out only at the situation when other procedures fail # to disconnect (switch off) the regulator from the feeding # to annex (switch on) the regulator again to the feeding at the simultaneous pushing down of the push button PRG / mute. After the RESET execution there will be all regulator parameters preset according to the regulator producer (see the chapter18.4). At the producer of the cooling equipment there was changed the setting (in comparison with the original presetting) for the differenctial regulation at the parameters St1,C7,C8,C9C13,C19,P25,P26,P28,C29 and for the simple regulation at the parameters C0,C7,C8,C9,C21,C22,P25,P26,P28,C29 to the values mentioned in the table 18.3.3. 18.3.6
The change of the temperature units
The temperature units, in which the regulator works, can be changed from o Celsius to o Fahrenheit by the change of the parameters C18. This change, however, does not change the oter regulation parameters and for this reason there is necessary to change furthermore the parameters St1, P1 and eventually P14 according to the requirements on the regulation and furthermore the parameters P25 and P26 to the values in o F, corresponding to the temperature in o C. 18.3.7
The remarks to the sensor installation
The cable to the sensor and the sensor itself should not be placed in the vicinity of the power conductor. In case of necessity of the joint line to use the shielded cable. The shielding must be grounded. The sensor can be located till the distance of 100 m from the regulator under the supposition that there will be used the conductor of the minimal diametre of 1 mm2, optimally the shielded one. 18.3.8
Other details
The more detailed specification and further technical informations are contained in the annexed manual of the regulator, see the chapter 18.4.
18.3.9
The instructions for the electronic regulators
CAREL IR 32 V,W,Z CAREL IRDR,V,W,Z
Ir
1. THE DESCRIPTION OF THE REGULATOR FRONT PANEL
C Ir
1. The three – places display -
it displays the value, measured by the connected sensor in the case of an alarm it displays the measured value alternatively with the code of the activated alarm during the programming it displays the parameter code and its value in case of the switching off of the regulation (see C29, C30) it displays three dashes alternatively with the value, measured by the sensor.
2. The decimal point 3. The LED „reverse“ indicates the „reverse“ function (the regulator is set up on the inverted regime, see the basic terms). It blinks if the output is activated with the reverse function. The number of blinkings after a two second pause indicates the number of the relay outputs. 4. The LED „direct“ indicates the function „direct“ (the regulator is set up on the direct regime, see the basic terms). It blinks if the output is activated with the direct function. The number of blinkings after a two seconds pause indicates the number of relay output. 5. The key SEL. -
It enables to display or change the set up temperature value
-
It confirms the value of the set up parameters, see the parameter setting up. If it is pushed at the same time with the key PRG/Mute for a longer time than 5 seconds, we have the possibility to enter into the configuration menu of the parameters (code type „Cxx“.)
6. The key PRG / Mute -
if it is pushed down for a time, longer than 5 seconds , we have the possibility to enter into the configuration menu of the parameters (code type „Pxx“). It enables to switch off the alarm buzzer After the ceasing of the alarm conditions it cancels the displaying of the alarm code on the display It enables to get out from the process of the setting up of the parameter values
7. The key „upward arrow“. -
it increases the displayed value the advance to further parameters
At the modification of the parameters „The required values“ and „P“ the regulation runs fluently. At the modification of the parameters „C“ remain the outputs in the state before the modification. The new value of the „C“ parameter will be of use after the selection confirmation by pushing down the push button „PRG“. The new „required value“ will be of use after the confirmation by the push button „SEL“. The „P“ parameters will be of use immediately. At the application of the remote control device the outputs work according to t he previously setup conditions, so long as we do not confirm the selection by pushing down the push button „PRG“ on the operating device. 3.
BASIC TERMS
The direct and inverted regime The regulator works in the direct regime, in case it has the tendency to work against the growth of the regulated quantity. The direct regime is typical e.g. at the cooling: the more grows the measured temperature, the more there grows the output of the cooling circuit, in order to cause the temperature decrease. The term the „inverted regime“ (inverse, reverse) is used in case the regulator has the tendency to work against the decrease of the regulated quantity. This is used e.g. at the heating systems, where against the temperature decrease there works the increase of the warmth production. The required value (St1, St2)
This is a value which should be reached by the regulated quantity (e.g. the oven working temperature). In case the regulated quantity will reach this value, the output (e.g. the heating element) will be switched off. Hysteresis (the difference – P1-P2) This quantity controls the outputs, in case the regulated quantity differs from the required value. Without the hysteresis the apparatus would suddenly pass from the state of the switched off outputs – OFF (in case the regulated quantity equals to the required value) into the switched on outputs (in case the required quantity differs from the required value). In case the hysteresis is possitive, the regulator switches on the outputs , only if the difference between the regulated quantity and the required value (which means the regulation deviation) exceeds the hysteresis value. The low hysteresis value will cause, that the regulated quantity moves very closely to the required value, but at the same time there is often switched on and switched off the output, which can cause problems. In case there is required a very exact regulation, can be activated the regulation P+I.
4.
THE OPERATION REGIMES (the C0 parameter)
C0=1. The direct function
The main parameter is the required value St1 and hysteresis P1. At the models with more outputs is the output activation divided on the whole hysteresis. During this regime there blinks on the display the pilot DIRECT. C0=2. Inverted function The main parameter is the required value St1 and hysteresis P1. At the models with more outputs is the output activation uniformly divided on the whole hysteresis. During this regime there blinks on the display the pilot REVERSE. C0=3. Three positions regulation with the neutral (zero) zone The main parameters are the required value St1, the hysteresis of the inverted regime P1 (e.g. the heating), the hysteresis of the direct regime P2 (e.g. the cooling) and the neutral zone P3. The regulation aim is to keep the regulated quantity in the restricted zone (P3), the so called neutral (zero, dead ) zone, where there is not activated any output. Out of this zone the apparatus works in the direct regime, as far as the regulated quantity grows above St1 and in the inverted regime, as far as the regulated quantity sinks. 8. The key „downward arrow“ -
diminsh the displaye value shift to further parameters
2.
in case of using the second sensor at the regulator with the NTC inputs it enables the displaying the temperature, sensed by this second sensor. THE SETTING OF PARAMETERS (with the help of the push buttons)
a) the parameter categories -
the required values „St“ „P“ type – the often used parameters (e.g. the hysteresis, size of neutralization zone, alarm setting, calibration – offset) „C“ type for the configuration of other parameters.
b) the access to parameters The required values – push down „SEL“ for 1 second The „P“ parameters – push down the push button „PRG/Mute“ for the time of 5 seconds. The „C“ parameters – the access is protected by the password. Push down simultaneously „PRG“ and „SEL“ for the time of 5 seconds. Push down the push button „upward arrow“ or „downward arrow“ (further „the arrow“ only) setup the correct password. For the parameter change there are 2 passwords: The password „22“ enables the change of the parameters C0,C13,15,16 and all „P“ parameters. The password „77“ enables the change of all parameters. c) the change of the required value • •
by the push buttons „arrow“ setup the new required value to confirm the selection by the push button „SEL“.
d) the parameter change • • • •
if it is displayed on the display another parameter, setup with the push buttons „arrow“ the parameter name which you will change (e.g. P25) after the displaying of the parameter name push down the push button „SEL“, there will be displayed the setup parameter value by the push buttons „arrow“ setup the new parameter value confirm the selection. For the selection confirmation within the frame work of the programming procedure push down the push button „SEL“ (there will be displayed again the parameter name), for the selection confirmation with the leaving of the programming procedure push down the push button „PRG“ (there will be displayed the measured value).
According to the used model there can be one or two relays in the direct or inverted regime. In case the apparatus has only one relay, it works in the inverted regime with the neutral zone. According to the function in which there is activated the output, there blinks on the display the pilot DIRECT or REVERSE.
C0=4. The puls-width modulation (PWM) The main parameters are the required value St1, the hysteresis of the inverted regime P1 (e.g. the heating) , the hysteresis of the direct regime P2 (e.g. the cooling) and the neutral zone P3. The regulation logic is the same as in the preceding case. It is the regulation with the neutral zone in the way that the relays are activated in the impulse manner. Each relay is periodically activated (switches on) with the period 20 s (modifiable with the parameter C12) for the time of 0,2 till 20 s), according to the requirement for the performance. The switching on time is proportional to the position of the regulated quantity in the hysteresis zone. The PWM function consequently carries out the proportional control, which can improve the regulation, but it has certain limitations. E.g. it is not reasonable to use it for the control of compressors or other drives, the reliability of which would suffer by the frequent switching on. The frequent switching on reduces the service life of the output relays (the service life is calculated for approx. 1 million cycles). The pilots DIRECT or REVERSE blink with the speed, proportional to the number of the activated relays.
C0= 5 the alarm regime The main parameters are the required value St1, the hysteresis of the inverted regime P1 (e.g. the heating), the hysteresis of the direct regime P2 (e.g. the cooling) , the neutral zone P3, the lower alarm limit P25 and the upper alarm limit P26, the hysteresis of alarm P27 and the alarm delay P28. In this regime is one relay (the moderls V and W) or are two relays (the Z model) setup in the way that they signalize the common alarm (the probe interruption or short – circuit, the error in the electronics) or the lower/upper alarm. At the Z model is the relay activated at the or lower alarm, and the relay 4 at the common and upper alarm. At the alarm there appears also the report on the display and there is started the acoustic signal, in case the regulator is equiped with the buzzer. At the model Z, the outputs 1 and 2, which are not used for the alarm, work in the regime 3. In case the alarm is activated, the alarm output returns to the primary position, either after the return to the normal conditions (the automatic reset, at „low“ values P27) or after pushing down the push buttons PRG – MUTE, but the conditions for the alarm continue, there is interrupted the acoustic signal, but the report on the display and the relay state continue. C0=6. The direct/inverted regime, switchable by the digital input The parameters are the same as in the regime 1 or 2. The apparatus selects the direct regime 1 or the inverted regime 2 according to the state of the digital input 1. The direct regime, in case the input is switched off and the inverted regime, in case the input is switched on.
C0=7. The direct regime with the required value and hysteresis switchable by the digital input. The regime is always direct, according to the state of the digital input, there is changed the required value and the hysteresis.
The digital input switched off – the required value St1, the hysteresis P1. The digital input switched on – the required value St2, the hysteresis P2. C0=8. The inverted regime with the required value and the hysteresis, switchable by the digital input The regime is always inverted, according to the state of the digital input there is changed the required value and the hysteresis. The digital input switched off – the required value St1, the hysteresis P1 The digital input switched on – the required value St2, the hysteresis P2. C0=9. The regime with two required values, St1 in the inverted regime, St2 in the direct regime.
5. THE SURVEY OF THE CONFIGURATION PARAMETERS Code Parameter name
possible extent
St1 St2 C0
probe extent probe extent 1…..9
setup from the Production 20.0 40.0 2
0.1…..99.9
2.0
0.1…..99.9
2.0
0.0…..99.9 -2.0…..2.0 0……..1
2.0 0.5 0
The required value The required value The operation regime
The setting of the hysteresis P1 The hystereses of required value 1 P2 The hystereses of required value 2 P3 The size of the zero zone C4 The compensing coefficientC5 The regulation type
The output parameters C6 Switching on delay of two 0……999 s Different outputs C7 The minimal time between 0……15 min. 2 switching on of the same output C8 The minimal switching off time of the same output 0……15 min. C9 The minimal switching on time of the same output 0……15 min. C10 The output state at the alarm detected by the probe 0……3 C11 The output rotation 0…….7
5 0 0 0 0 0
C12
The PWM cycle time
0.2….999s
20
0……1 -99….99.9
0 0.0
-99….C16
0.0
C15…999
100
1……14 0……1 0…….4
5 0 0
The probe parameters C13 P14 C15 C16 C17 C18 C19
The probe type The calibration-off-set The extent beginning for the analogous input The extent end for the Analogous The constant of the probe Filter The temperature unit The compensation regime
The required values C21 C22 C23 C24
Minimal value St1 Maximal value St2 Minimal value St2 Maximal value St2
-99……C22 C21…..999 -99…..C24 C23….999
the probe minimum the probe maximum the probe minimum the probe maximum
The alarms P25 P26 P27 P28 C29 C30 C31
The low absolute alarm –99……P26 The high absolute alarm P25….999 The alarm hysteresis -99……99.9 The alarm delay 0………120 min The setting of the digital Input 1 0…….4 The setting of the digital Input 2 0…….4 The output state at the Detected alarm by the digital Input 0…….3
the probe minimum the probe maximum 2.0 60 0 0 0
The miscellaneous C32 C33 C55 C51
The equipment address for the series line The special operation regime - for current purposes do not modify The access setting to the parameters The code for the activation by the remote operating device
1……16 0……1
1 0
0……4
4
0…..120
0
6.THE PARAMETERS DESCRIPTION St 1 The required value 1 (the main regulation point) The access to the parameter: By the push buttons: In case C50=1 or 3, to push down SEL In case C50 = 0,2 or 4, the parameter is only displayed The operating device IR: if C50 = 0,1 or 4, the parameter can be modified by pushing down the respective push button If C50 =2 or 3, the parameter is only displayed The validity: all models all operation regimes St 2 The required value 2 (the second regulating point) The access to the parameter: By the push buttons: If C50 = 1 or 3, to push down SEL for the St1 modification If C50 =0,2 or 4, the parameter is only displayed The operating device IR: if C50 = 0,1 or 4, the parameter can be modified by pushing down the respective push button
If C50 =2 or 3, the parameter is only displayed The validity: all models The operation regimes CO = 6,7,8,9 or the parameter C19=2,3,4 C0 The operation regime C0 = 1 the direct one C0 = 2 the inverted one C0 = 3 the neutral zone C0 = 4 PWM (the puls – width modulation) C0 = 5 the alarms C0 = 6 the direct /inverted – the switching over by the digital input C0 = 7 the direct one – St1, P1/St2, P2, switchable by the digital input C0 = 8 the inverted one – St1, P1/St2, P2 switchable by the digital input C0 = 9 two independent required values, St1 in the inverted regime (the cooling)
St2 in the direct regime (the heating) only at the models W and Z P1 The hysteresis of the required value St1 The extent: 0,1 till 99,9. It is indicated in the absolute value and lies either on the right (behind St1) or on the left (in front of St1) according to the operation regime. P2 The hysteresis of the required value St2 – see P1 It is valid for the regimes C0 = 3,4,5,6,7,8,9 or the parameter C19=4. At the operation regimes C 0=3,4,5 is P2 the hysteresis of St1. P3 The neutral zone The extent: 0,0 till 99,9. It deliminates the iniciativity zone of the regulating outputs around the required value in the regimes C 0=3,4,5. C4 The compensating (weight) coefficient for 2 NTC probes It is valid for the regimes C0 =1 and 2 the parameter C19=2,3 or 4 C5 The regulation type C5 = 0 the proportional regulation C5 = 1P + I regulation (the proportional + integration one) C6 The delay between the switching on of two different outputs (for the cascade switching on of the loads). It is valid for the models W and Z. In case the system requires the sequential activation of several outputs one after another, by this parameter you can setup the delay between the individual switchings on. Do not confuse with the parameter C7. The parameter C6 does not work at the PWM regime (C0=4).
C7 The delay between two switchings on of the same output It determines the time in minute between two subsequent switchings on of the same output. The parameter C7 does not work at the OWM regime (C0=4). It is appropriate for a greater effectivity, e.g. of the systém with the compressor. C8 The minimal time of the output switching off It determines the time in minutes during which remains the output in rest (switched off). This parameter enables e.g. the pressure equalization after switching off the sealing compressor. The parameter C8 does not work at the PWM regime (C0=4) C9 The minimal time of the output switching on It determines the time in minutes during which it remains switched on after the activation. The C9 parameter does not work at the PWM regime (C0=4)
C10 The output state at a probe defect (Er0) C10 = 0 All outputs are switched off C10 = 1 All outputs are switched on C10 = 2 The outputs in the direct regime are switched on, in the inverted regime switched off C10 = 3 The outputs in the direct regime switched off, in the inverted regime switched on C11= The output rotation at the step-by-step switching on of 2 or 4 loads Validity: for the models W and Z, the operation regimes C0=1,2,6,7,8 C11 = 0 without the rotation C11 = 1 the standard of all (2 or 4) outputs C11 = 2 the rotation 2 + 2 at 4 outputs. It is appropriate for two compressors, both with the performance regulation. The rotation is between the two regulated compressors. The output 1 – compressor 1, the output 2 – valve 1// the output 3 – the compressor 2, the output 4 – the valve 2. The regulating valve is for the full performance of the compressor switched on. C11 = 3 identical with C11 = 2. The regulating valve is at the full performance of the compressor switched off. C11= 4 the output rotation 3 and 4, not 1 and 2 C11 = 5 the output rotation 1 and 2, not 3 and 4 C11 = 6 the output rotation 1 and 2 + the output rotation 3 and 4 C 11 = 7 the output rotation 2,3 and 4 , not 1 C12 The PWM cycle time (the pulse –width modulation) The validity: C0 = 4
The total PWM cycle time = the switching on time (tON) + the switching off time (tOFF). The relation between the tON and tOFF is destined by the regulation deviation. In case the PWM is combined with the P+I regulation, the regulated quantity will have the tendency to be in conformity with the required value, falling in consequence of this into the neutral zone. The minimal tON time depends on the number of decimal places of the hysteresis output in the PWM regime.
C13 The probe type For the thermocouples: C13 = 0 the K thermocouple C13 = 1 the J thermocouple For the current output: C13 = 0 4-20 mA C13 = 1 0-20 mA The NTC input: C13 = the normal function C13 = 1 The apparatus reverses the sequence of the NTC1 and NTC2 displays (the normal apparatus points NTC2, NTC1 will be displayed after pushing down the push button „downward arrov“). The regulation logic remains a change – the main probe is NTC 1, the second probe is NTC2. The displayed value does not correspond with the temperature, according to which the regulator controls the action intervention . In case the C13=1, it is necessary to attach NTC 2, otherwise there appears the Er1 alarm. P 14 The calibration - offset This parameter enables to correct the measured value by the offset adding or subtracting. For the NTC input is valid P14 only for NTC1, not for NTC2. C15 The bginning of the extent of the voltage or current input The value corresponding to 4mA ( 4 ÷ 20 mA) 0 mA (0 ÷ 20 mA) or 0 V (-0,4 ÷ 1V). C16 The end of the extent of the voltage or current input The value corresponding to 20mA ( 4 ÷ 20 or 0 ÷ 20 mA), or 1 V (-0,4 ÷ 1V).
C17 The probe filter constant C17 defines the max. deviation of the displayed value for the given time interval. The higher C17 have as a consequence the wider dispersion of the input signals, their quicker reading, but a greater noise. The lower values C17 cause the slower reading, but a greater resistance against the interference. For the thermocouples and Pt100 we recommend to setup C17 on lower values. C18 The temperature unit C18 = 0 the temperature in o Celsius C18 = 1 the temperature in o Fahrenheit The C18 modification does not change automatically the other regulation parameters (St1, St2, O1,P2,P14,P25,P26). These must be changed subsequently according to the requirements regimes C0=1,2. C19 The compensation regime – only for NTC2 and the operation regimes C0= 1,2 C19 = 0 without the compensation regime
C19 = the differential regulation: St1 = NTC1 – NTC2 C19 = 2 the summer compensation: If NTC2 St2 , then St1 = St1 If NTC2 ≤ St2 then St1 = St1 + (NTC – St2).C4 C19 = the winter compensation If NTC 2 St2, then St1 = St1 If NTC2 > St2, then St1 = St1 + (NTC – St2).C4 C19 = 4 The active compensation with a neutral zone If NTC2 > St2 + P2 then St1 = St1 + (NTC2 – St2 – P2) . C4 If St2 – P2 ≤ NTC2 St2 + P2 then St1 = St1 If NTC2 > St2 – P2 then St1 = St1 + (NTC2 – St2 + P2).C4 For C19 = 2,3 and 4 – it is possible to limit the min. and max. value St1 by the parameters C21 and C22. C21The minimal value St1 C22 The maximal value St1
-99…..C22 C21…999
for NTC –50 for NTC 90.0 for Pt100 600
C23 The minimal value St2 C24 The maximal value St2
-99….C24 C23…999
for NTC –50 for NTC 90.0 for Pt100 600
P25 The low absolute alarm
-99…P26
for NTC –50
The absolute value of the regulated quantity, at which the regulator declares the low temperature alarm (Er5). In case the alarm is delayed (P28) is declared only if the condition for itself, lasts longer than the P28 time. This alarm can be setup also as a relative one, see the parameter P27.
P26 The high absolute alarm
P25…..999
for NTC 90.0 for Pt100 600
The absolute value of the regulated quantity, at which the regulator declares the high temperature alarm (Er4). In case the alarm is delayed, (P28), it is declared only, if the condition for itself last longer than the time P28. This alarm can be setup also as a relative one, see the parameter P27. P27 The alarm hysteresis It is valid for the low temperature and also high temperature alarm. In case that the alarm condition ceases to be valid, the alarm is automatically canceled. The positive hysteresis value makes the alarms P25 and P28 absolut, the negative hysteresis value makes the alarms P25 and P26 relative with the respect to St1 or St2. The alarm hysterresis must not be 0. In case there is required the manual alarm reset, it is necessary to setup P27 on the max. (positive or negative) of the parameter. P28 The alarm delay The time in minuted since the condition rise for the alarm till the alarm activation in the regulator. It is valid for the low temperature one (Er5), the high temperature one (Er4) and also the alarm, indicated by the digital input (Er3), see the parameters P25,P26,C29,C30. In case that during the time P28 ceases to be valid the condition for the alarm, the alarm is not activated. C29 The setting up of the digital input 1 – it is valid for C0=1,2,3,4,5,9 C29 = 0 the input is not active C29= 1 the immediate alarm (Er3) with the automatical reset. The alarm is activated by switching off of the digital input, it is reset by its switching on. C29= 2 The immediate alarm (Er3) with the manual resetting. The alarm is activated by switching off of the digital input. In case there ceases to be valid the alarm condition (the contact is switched on), the alarm lasts. The resetting must be carried out by pushing down of the push button „PRG/mute“. C29= 3 the delayed alarm (P28) with the manual resetting. In case that the digital input is switched off for the time longer than P28, there is declared the alarm. The resetting can be carried out by the push button „PRG/mute“ C29 =
-
The switching on/switching off of the regulation In case that the digital input is switched on, the apparatus regulates. In case that the digital input is switched on, the regulation is interrupted. During this interruption: the display shows three dashes (---), which vary with the value on the input sensor or with the alarm reporting, in case that the alarm condition appeared before this state. All regulation outputs are switched off, but the minimal switching on time of the output C9 is taken in consideration
-
The alarms and the acustic signal, which were in the moment of switching off, activated, remain active. The apparatus does not generate any alarm, with the exeception of Er0 resetting.
C30 The resetting up of the digital input 2 – only for IRDR – the same as at C29 C30 = 0 The input is not activated C30 = 1 The immediate alarm with the automatic resetting C30 = 2 The immediate alarm with the manual resetting C30 = 3 the delayed alarm (P28) with the manual resetting C30 = 4 the switching on/switching off of the regulation C31 Tne input states at the alarm, detected by the digital input C31 = 0 all outputs are switched off C31 = 1 all outputs are switched on C31 = 2 all outputs in the direct regime are switched on, in the inverted systém switched off C31 = 3 all outputs switched off, in the inverted systém switched on C32 The equipment address for the series line – for the IR operating device C33 The special operation regime – it does not modify for current purposes C50 The setting up of the access to the parameters This parameter limits the possibility of changing the parameters by an unauthorized person. This safety function protects the apparatus, especially, if it is located on an easily accessible place. The individual parameter categories are accessible according to the following table: C50 0 1 2 3 4
Push buttons everything blocked complete access everything blocked complete access complete access
IR operating device St, P yes, C not St, P yes, C not everything blocked everything blocked complete access
C51 The code for the activation by the remote operating device
This function is of use, if you need to programme with the IR operating device more regulatros on one panel. You can setup every regulator on the specific access code (from 1 to 20) and in this way to prevent a possible interference with other apparatus. C51 = 0 the direct access to the parameters by the operating device by pushing down the push button „START“. C51 = 1,2 ..120 Push down „START“ and the regulator displays the access code. Push down the number of this code on the operating device and there will be opened the access to the parameters.
7. ALARMS Code
Description
Er0
The sensor error The interrupted to check the connexion , it depends on C10 R:automatically short circuited the sensor exchange D: manually or defective the NTC sensor=10,0k ohms sensor at 25o C The sensor error The interrupted dtto Er0 it depends on C10 R:automatically short circuited D: manually or defective sensor The error of the The interruption to carry out the regulator the regulation R:automatically regulator memory of the supply resseting, see below, if is stopped D: manually during the setting Er2 lasts is the regulator up of the parameters, damaged the memory error, the electromagnetic interferences The alarm, the contact on the see the parameters C29, it depends on C31 R:it depends on C29 detected by the digital input is C30, C31 and P28 and C 30 digital input opened the high alarm there is exceeded see the parameters P26, the regulation continues R:automatically temperature the set up alarm P27, P28 without interruption D: manually Temperature, see P26
Er1
Er2
Er3
Er4
Reason
Removal
Regulation in the alarm time of the error duration
Alarm resetting
Er5
the low alarm Temperature
there is exceeded see the parameters P25, the regulation continues R:automatically the set up alarm P27, P28 without interruption D: manually temperature see 25
The alarm resetting – the return to the state before the alarm declaration after the elimination of the cause, which caused the alarm. R: the regulation – the renewal of the regulator activity after the elimination of the conditions, which caused the alarm D: the display – the cancellation of the alarm declaration on the display after the elimination of the conditions, which caused the alarm. It is carried out by the push button PRG/Mute 8. The regulator resetting - to switch off the regulator from the supply - to switch on again the regulator with the simultaneously pushing down of the push button PRG/Mute. - After executing the resetting are all regulator parameters setup on the values which are setup by the regulator producer, therefore it is necessary to reset all parameters which are different from the original setting up! (the settings for the individual applications are in the operation and maintenance instructions of the individual equipments.)
