4893 Actuators for radiator valves SSA31... SSA61... SSA81...

4 Actuators for radiator valves

893

SSA31... SSA61... SSA81...

with 2.5 mm nominal stroke 80130

80117

SSA... without auxiliary switch

SSA...1 with auxiliary switch

Electro-mechanical actuators for radiator valves. • Nominal stroke range 2.5 to 5 mm • Automatic stroke recognition • 3-position or DC 0…10 V control signal • AC 24 V or AC 230 V operating voltage • Direct assembly with union nut (no tools required) • Can be operated manually • Optional auxiliary switch AC 250 V / 1(0.5) A, with adjustable switching point 0...100 % • Plug-in cable for supply voltage and control signal • Parallel connection of multiple actuators possible • With position indicator

Use

For use in heating systems in conjunction with radiator valves from Landis & Staefa or from other manufacturers.

Functions

The DC 0...10 V control signal or the 3-position control voltage generates a stroke in the actuator which is transmitted to the valve stem.

Type summary

SSA31... / SSA81... (3-position control)

• Voltage at Y1: Valve opens • Voltage at Y2: Valve closes • No voltage at Y1 and Y2: Valve remains in current position.

SSA61... (DC 0...10 V control signal)

• The valve opens in proportion to the voltage at Y. • At 0 V, the valve is closed.

The basic types are supplied with a 1.5 metre cable, but actuators may also be ordered without a cable (type codes ending in .../00). A long connecting cable (4.5 m, see

“Accessories”) can be ordered for these. The SSA31... and SSA81... actuators are also available with auxiliary switches.

Auxiliary switches

Siemens Building Technologies Landis & Staefa Division

Actuator types SSA31.1... and SSA81.1... have a built-in auxiliary switch. The switch cannot be fitted later.

CA1N4893E / 01.2000 1/6

Type summary (continued)

Type

Operating voltage

Running time at 50 Hz

Control signal Cable length

Built-in aux. switch

SSA31 SSA81 SSA61

AC 230 V AC 24 V AC 24 V

150 s 150 s 34 s

3-position 3-position DC 0...10 V

1.5 m 1.5 m 1.5 m

No No No

SSA31.1 SSA81.1

AC 230 V AC 24 V

150 s 150 s

3-position 3-position

1.5 m 1.5 m

Yes Yes

SSA31/00 SSA81/00 SSA61/00

AC 230 V AC 24 V AC 24 V

150 s 150 s 34 s

3-position 3-position DC 0...10 V

No cable No cable No cable

No No No

SSA31.1/00 SSA81.1/00

AC 230 V AC 24 V

150 s 150 s

3-position 3-position

No cable No cable

Yes Yes

Accessories

ASY3L45 ASY6L45 ASY8L45 ASY98

Connecting cable AC 230 V, 3-position Connecting cable AC 24 V, DC 0 ...10 V Connecting cable AC 24 V, 3- position Retaining screw for connector

Adapters for third-party valves

AV51 AV52 AV53 AV54 AV55 AV56

Adapter for Beulco Adapter for Comap Adapter for Danfoss RA-N Adapter for Danfoss RAVL Adapter for Danfoss RAV Adapter for Giacomini

Ordering

When placing an order please state the quantity, product name and type code. Items are supplied individually packed. Example: 2 actuators, type SSA81/00 and 2 connecting cables, type ASY8L45

Compatibility

The actuators are suitable for use with the following Landis & Staefa valves:

Valves from other manufacturers

AV57 AV59 AV60 AV61 AV100-MLG

Adapter for Herz Adapter for Vaillant Adapter for TA RVT Adapter for Markaryd Adapter for L&G Radiagyr valves

Valve type

kvs [m3/h]

Nom. pressure [bar]

Sheet

2-port valves VD110, VD115, VD125 VD210, VD215, VD220

0.25 ... 2.6 0.25 ... 2.6

PN10 PN10

2145 2146

Angle valves VE110, VE115, VE125 VE210, VE215, VE220

0.25 ... 3.4 0.25 ... 3.4

PN10 PN10

2145 2146

Reverse angle valves VU215

0.25 ... 1.5

PN10

2146

For trouble-free operation in conjunction with the SSA… actuators, third-party valves must comply with the following specification : F

x

y

90187

M30 x1.5

A

CA1N4893E / 01.2000 2/6

Length 4.5 m Length 4.5 m Length 4.5 m

AB

• • • •

Threaded connection with union nut M30x1.5 Actuator power in range F = 85 ...160 N Dimension x, valve closed: x > 9 mm Dimension y, valve open: y ≤ 14.5 mm

To date, the following valves have been tested: Heimeier (standard types), Honeywell, MNG, Finimetall, TA (Type TRV400), Cazzaniga, formerly SCS (Types 2T.../A).


Mechanical design

The actuator and valve are supplied separately. They are assembled with a union nut, requiring no tools or adjustments. In the case of actuators with auxiliary switches, the switch is connected to terminals and must be wired separately.

Features:

• • • • • • •

Plastic housing Stall-proof gear unit, no maintenance required Plug-in connecting cable, length 1.5 m Non-interchangeable AC 24 V and AC 230 V sockets Manual adjustment with 3 mm Allen key Reduced current consumption in stop positions Force-dependent switch-off in the event of overload, and in stroke end-positions. • Up to 6 SSA31 or SSA81, or up to 10 SSA61 actuators may be operated in parallel.

80117

Engineering notes

Note the admissible temperatures (see sections on “Use” and “Technical data”). The connecting cable will not be damaged by contact with the valve body as long as the valve body temperature does not exceed 80 °C.

Mounting

Mounting instructions are printed on the packaging. 80129

Orientation

Permissible

Commissioning

NOT permissible

When commissioning, check the wiring and the functioning of the actuator and auxiliary switch, if fitted. Valve opens. • Spindle extended (movement from Mark 0 to 1): Valve closes. • Spindle retracted (movement from Mark 1 to 0):

Caution

Operation

The SSA61... calibrates itself (calibration stroke) during commissioning. Correct functioning cannot be guaranteed if the SSA… is operated without a valve.

The actuators can be driven manually to any position between 0 and 1 with a 3 mm Allen key. A control signal from the controller, however, will take priority over any manual position.

Note

To hold the actuator in the manually set position, the connecting cable must be unplugged. Manual adjustment with Allen key

3 mm

A B

80119

80136

0

0

80137

3m m


A

Position indicator at Mark 0 = CLOSED

1

1

3 mm

B

Position indicator at Mark 1 = OPEN

CA1N4893E / 01.2000 3/6

Maintenance

!

When servicing the actuator note the following: • Switch off the operating voltage. • Where applicable, disconnect electrical connections from the terminals. • The valve must be mounted in accordance with instructions before commissioning the actuator.

Technical data Supply voltage

Control

SSA31...

SSA81...

SSA61...

AC 230 V ±15 %

AC 24 V ± 20 %

AC 24 V ± 20 % DC 24 V ± 25 %

Frequency Max. power consumption

50 / 60 Hz 6 VA

50 / 60 Hz 0.8 VA

50 / 60 Hz 2.0 VA

Control signal Input impedance for DC 0...10 V Position accuracy for DC 0...10 V

3-position -----

3- position -----

6

6

DC 0 ...10 V > 100 kOhm < 2 % of nominal stroke 10

Operating voltage

Max. no. of parallel connected actuators Auxiliary switch (optional)

Switch type Switching point adjustable from Switching capacity

Applies to all types

Running time for 2.5 mm stroke Nominal stroke Nominal force Connecting cable (actuator) Weight without / with auxiliary switch

General ambient conditions

Operation to IEC721-3-3 Class 3K3 : 1 ... 50 °C and 5... 85 %rh Transport to IEC721-3-2 Class 2K3 : –25... +70 °C and max. 95 %rh Storage to IEC721-3-1 Class 1K3 : – 5... +50 °C and 5 ... 95 %rh Admissible temperature of medium (in valve) +1 ...+110 °C

Safety

With AC 24 V operating voltage With AC 230 V operating voltage Housing protection standard

CE marking

Meets the requirements for CE marking in accordance with EMC directive Low Voltage directive

Connecting cable SSA31...

80122

Y1 6 Black N 4 Blue Y2 7 White

SSA81...

80123

Y1 6 Purple G 1 Red Y2 7 Orange

SSA61...

80124

G0 2 Black G 1 Red Y 8 Grey

CA1N4893E / 01.2000 4/6

1 SPDT 1 SPDT 0 ...100 % 0 ...100 % AC 250 V, 1 A resistive, 0.5 A inductive 150 s

150 s 2.5 mm (5.5 mm max.) 100 N –15 / + 60 % 3-core, length 1.5 m or 4.5 m 0.3 kg / 0.4 kg

– –

34 s

to EN60730 section 2.7 : Protection class III to EN60730 section 2.7 : Protection class II IP40

89/336/EEC 73/23/EEC

Control voltage, OPEN (AC 230 V) Neutral (neutral conductor) Control voltage, CLOSE (AC 230 V)

Control voltage, OPEN (AC 24 V) Phase (AC 24 V) Control voltage, CLOSE (AC 24 V)

System neutral Phase (AC 24 V) Control signal DC 0...10 V


80125

SSA31.1 and SSA81.1 : Terminals for auxiliary switches

Do not exceed the max. loads for the SPDT contacts : – Max. AC 250 V – Max. 1 A resistive – Max. 0.5 A inductive

Q14 Q12 Q11

Q11 – Q12 closed and Q11 – Q14 open: –> Valve > 0 % OPEN. Adjustable switching point. Q11 – Q12 open and Q11 – Q14 closed: –> Valve 0 % = CLOSED The switching point can be adjusted by turning the switching cam with a screwdriver (instructions enclosed with packaging).

Dimensions

All dimensions in mm

Without auxiliary switches

SSA31... SSA61... SSA81...

80126

72.5

81.4

48

83

With auxiliary switches

SSA31.1... SSA81.1...

80127

98.5

89.5 48

83


CA1N4893E / 01.2000 5/6

 1998 Siemens Building Technologies Ltd.

CA1N4893E / 01.2000 6/6
