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Application
Functions
3-position or proportional
control signal
Siemens Building Technologies
Landis & Staefa Division
Electric actuators
for valves with
a 5.5 mm stroke
SQS35.50, SQS35.53
SQS65.5
with spring return / without manual adjustment
Electric actuators
• SQS35... AC 230 V operating voltage, 3-position control signal
• SQS85...AC 24 V operating voltage, 3-position control signal
• SQS65... AC 24 V operating voltage, DC 0 ...10 V or DC 2 ... 10 V control signal
• Positioning force 400 N
• Stroke 5.5 mm
• For direct mounting on valves, without adjustment
• Optional auxiliary switch for additional functions with SQS35.00, SQS35.03,
SQS85.00 and SQS85.03
• Choice of actuators with or without spring return function to DIN 32 730
• Non-spring return actuators with position indication and with manual
adjustment
• Spring return actuators with position indication and without manual
adjustment
Used to operate 2-port and 3-port valves with a 5.5 mm stroke. For valve types VVG44...,
VVG55..., VVP45..., VMP43..., VMP44..., VMP45..., VXG44..., VXP45..., VVI52...
• Area of application in accordance with IEC 721-3-3 Class 3K5
• Ambient temperatures:
• Temperature of medium in the connected valve:+2 ...+130 °C
• The use of mounting kit ASK30 enables the following valves with a 4mm or 5.5 mm
stroke to be operated: X3i..., VVG45..., VXG45..., VXG46... and VVI51...
The reversible synchronous motor is driven with a 3-position control signal (SQS35...
and SQS85...) or a proportional DC 0...10 V (SQS65, SQS65.5) or DC 2...10 V
(SQS65.2) control signal. The corresponding stroke is generated via an anti-locking
gear mechanism.
3-position control at terminals Y1 or Y2:
• Voltage at Y1:
• Voltage at Y2:
• No voltage at Y1 or Y2: Valve stem holds current position
SQS35.00, SQS35.03, SQS65, SQS65.2
SQS85.00, SQS85.03
without spring return / with manual adjustment
−
+
5 ...
50 °C
Valve stem retracts, through-port opens
Valve stem extends, through-port closes
4
573
SQS35...
SQS65...
SQS85...
CM1N4573E / 06.2001
1/8
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Table of Contents
Related Manuals for Siemens SQS35.53
Summary of Contents for Siemens SQS35.53
- Page 1 Electric actuators SQS35... for valves with SQS65... a 5.5 mm stroke SQS85... SQS35.50, SQS35.53 SQS35.00, SQS35.03, SQS65, SQS65.2 SQS65.5 SQS85.00, SQS85.03 with spring return / without manual adjustment without spring return / with manual adjustment Electric actuators • SQS35... AC 230 V operating voltage, 3-position control signal •...
- Page 2 When ordering, please specify the quantity, product name, type, and any accessories required. Example: 1 actuator, type SQS35.00 and 1 auxiliary switch type ASC9.6 Delivery The actuator, valve and accessories are packed separately and not assembled prior to delivery. CM1N4573E / 06.2001 Siemens Building Technologies Landis & Staefa Division...
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Page 3: Mechanical Design
Mechanical design • Reversible synchronous motor • Anti-locking gear mechanism • SQS35.50, SQS35.53, SQS65.5 have spring return function to DIN 32730 • Load-dependent switch-off in stroke limit positions • Selectable flow characteristic:equal percentage or linear for SQS65… actuators in conjunction with valve types VVG44..., VVI52... and VXG44... - Page 4 Stroke «0» = Valve closed Stroke «I» = Valve open Manual adjusterTurning the manual adjuster in an anti-clockwise direction causes Landis & Staefa valves with a 5.5 mm stroke to close (= 0% stroke). CM1N4573E / 06.2001 Siemens Building Technologies Landis & Staefa Division...
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Page 5: Warranty
SQS65.2 DC 2...10 V (proportional) Run-time Opening or closing SQS35.00, SQS35.50, SQS85.00 150 s at 50 Hz SQS35.03, SQS35.53, SQS85.03 35 s at 50 Hz SQS65, SQS65.2, SQS65.5 35 s at 50 Hz Spring return feature SQS35.50, SQS35.53, SQS65.5 Closing time 8 s... -
Page 6: Connection Diagram
Dimensions / Weight Dimensions See “Dimensions” Weight SQS35.00, SQS35.03, SQS65, SQS65.2, SQS85.00, SQS85.03 Excluding packaging 0.5 kg With packaging 0.6 kg SQS35.50, SQS35.53, SQS65.5 Excluding packaging 0.6 kg With packaging 0.7 kg Materials Actuator housing Plastics Housing cover and manual adjuster Plastics... -
Page 7: Connection Diagrams
SQS65.2 (AC 24 V, DC 2 ...10 V) Y (1,3) Equipment Frost detector On/off switch On/off switch N1CLASSIC controller CLASSIC controller P1Position indicator Position indicator R1Position transmitter Position transmitter Y1Actuator Siemens Building Technologies CM1N4573E / 06.2001 Landis & Staefa Division... - Page 8 Height of actuator after fitting on valve > 100 mm Minimum clearance from wall or ceiling > 200 mm for mounting, connection, operation, service etc. ã 2000 Siemens Building Technologies Ltd. Subject to changes CM1N4573E / 06.2001 Siemens Building Technologies Landis & Staefa Division...