Actuators for small valves

Transcription

1 Actuators for small valves with 5.5 mm nominal stroke SSB31... SSB SSB... without auxiliary switch SSB...1 with auxiliary switch Electro-mechanical actuators for valve types VMP45..., VVP45... and VXP45... Nominal stroke 5.5 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 % Plug-in cable for supply voltage and control signal Parallel connection of multiple actuators possible With position indicator Use For use in fan-coil systems, induction units and chilled-ceiling systems, to operate heating or cooling valves. Functions The DC V control signal or the 3-position control voltage generates a stroke in the actuator which is transmitted to the valve stem. SSB31... / SSB81... (3-position control) (DC V control signal) Voltage at Y1: Valve opens Voltage at Y2: Valve closes No voltage at Y1 and Y2: Valve remains in current position. The valve opens in proportion to the voltage at Y. At 0 V, the valve is closed. Type summary Auxiliary switches The basic types are supplied with a 1.5 metre cable. 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 SSB31... and SSB81... actuators are also available with auxiliary switches. Actuator types SSB and SSB have a built-in auxiliary switch. The switch cannot be fitted later. Siemens Building Technologies CA1N4891E / Landis & Staefa Division 1/6

2 Type summary (cont d) Accessories Ordering Compatibility Type Operating voltage Running time at 50 Hz Control signal Cable length Built-in aux. switch SSB31 AC 230 V 150 s 3-position 1.5 m No SSB81 AC 24 V 150 s 3-position 1.5 m No SSB81U AC 24 V 150 s 3-position Connection No terminals SSB61 AC 24 V 75 s DC V 1.5 m No SSB61U AC 24 V 75 s DC V Connection No terminals SSB31.1 AC 230 V 150 s 3-position 1.5 m Yes SSB81.1 AC 24 V 150 s 3-position 1.5 m Yes SSB31/00 AC 230 V 150 s 3-position No cable No SSB81/00 AC 24 V 150 s 3-position No cable No SSB61/00 AC 24 V 75 s DC V No cable No SSB31.1/00 AC 230 V 150 s 3-position No cable Yes SSB81.1/00 AC 24 V 150 s 3-position No cable Yes ASY3L45 Connecting cable AC 230 V, 3-position Length 4.5 m ASY6L45 Connecting cable AC 24 V, DC V Length 4.5 m ASY8L45 Connecting cable AC 24 V, 3-position Length 4.5 m ASY98 Retaining screw for connector When placing an order please state the quantity, product name and type code. Items are supplied individually packed (except SSB61U and SSB81U, see note below). Example 2 actuators without cables, type SSB81/00 and 2 connecting cables, type ASY8L45 Actuator types SSB61U and SSB81U are available only in packs of 10 (minimum order quantity). The electro-mechanical actuators are suitable for use in conjunction with the following 2-port and 3-port valves with a nominal stroke of 5.5 mm : Valve type k vs [m 3 /h] Nom. pressure Data sheet VVP port valves VXP port valves PN16 N4845 VMP port valves with integral T-bypass VMP43...(2) 2-port valves VMP port valves PN16 N4841 VMP43...(4) 3-port valves with integral T-bypass 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. CA1N4891E / Siemens Building Technologies 2/6 Landis & Staefa Division

3 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 SSB31 or SSB81 or up to 10 SSB61 actuators may be operated in parallel Engineering notes Mounting 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 instructions are printed on the packing. Orientation Permissible NOT permissible Commissioning When commissioning, check the wiring and the functioning of the actuator and auxiliary switch, if fitted. Spindle extended (movement from Mark 0 to 1) valve opens. Spindle retracted (movement from Mark 1 to 0) valve closes. Caution The calibrates itself (calibration stroke) during commissioning. Correct functioning cannot be guaranteed if the SSB is operated without a valve. Operating 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. A B 3 mm Manual adjustment with Allen key mm 3 mm B A Position indicator at Mark 0 = CLOSED Position indicator at Mark 1 = OPEN Siemens Building Technologies CA1N4891E / Landis & Staefa Division 3/6

4 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 Auxiliary switch (optional) Applies to all types: General ambient conditions SSB31... SSB81... Operating voltage AC 230 V ±15 % AC 24 V ± 20 % AC 24 V ± 20 % DC 24 V ± 25 % Frequency 50 / 60 Hz 50 / 60 Hz 50 / 60 Hz Power consumption 6 VA 0.8 VA 2.0 VA Control signal 3-position 3-position DC V Input impedance for DC V > 10 kohm Position accuracy < 2 % of nominal stroke Max. no. of parallel connected actuators Switch type 1 SPDT 1 SPDT Switching point adjustable at % % Switching capacity of auxiliary switches AC 250 V, 1 A resistive, 0.5 A inductive Running time for 5.5 mm stroke 150 sec 150 sec 75 sec Nominal stroke 5.5 mm Nominal force > 200 N Standard connecting cable (actuator) 3-core, length 1.5 m or 4.5 m Weight of actuator without / with auxiliary switch 0.3 kg / 0.4 kg Operation To IEC Class 3K3 : 1 C C and %rh. Transport To IEC Class 2K3 : 25 C C and max. 95 %rh. Storage To IEC Class 1K3 : 5 C C and %rh. Admissible temperature of medium (in valve) C Safety With AC 24 V operating voltage With AC 230 V operating voltage Housing protection standard To EN Section 2.7 : Protection class III To EN Section 2.7 : Protection class II IP40 CE marking Complies with the requirements for CE marking in accordance with: EMC Directive 89/336/EEC Low Voltage Directive 73/23/EEC Connecting cable SSB31... Y1 6 Black Control voltage, OPEN (AC 230 V) N 4 Y2 7 Blue White Neutral (neutral conductor) Control voltage, CLOSE (AC 230 V) SSB81... Y1 6 Purple Control voltage, OPEN (AC 24 V) G 1 Red Phase (AC 24 V) Y2 7 Orange Control voltage, CLOSE (AC 24 V) G0 2 Black System neutral G Y 1 8 Red Grey Phase (AC 24 V) Control signal DC V CA1N4891E / Siemens Building Technologies 4/6 Landis & Staefa Division

5 SSB31.1 and SSB81.1 : Terminals for auxiliary switches Q14 Q12 Q Do not exceed the max. loads for the SPDT contacts: Max. AC 250 V Max. 1 A resistive Max. 0.5 A inductive Q11 Q12 closed and Q11 Q14 open: Æ Valve > 0 % OPEN. Adjustable switching point. Q11 Q12 open and Q11 Q14 closed: Æ Valve 0 % = CLOSED The switching point can be adjusted by turning the switching cam with a screwdriver (instructions enclosed with packaging). Dimensions Without auxiliary switch All dimensions in mm SSB31... SSB With auxiliary switch SSB SSB Siemens Building Technologies CA1N4891E / Landis & Staefa Division 5/6

6 1998 Siemens Building Technologies Ltd. Subject to technical alteration CA1N4891E / Siemens Building Technologies 6/6 Landis & Staefa Division