Siemens Building Technologies
CM1N4573E / 06.2001
Landis & Staefa Division
1/8
4
573
Electric actuators
for valves with
a 5.5 mm stroke
SQS35...
SQS65...
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
•
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:
−
5 ...
+
50 °C
•
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:
Valve stem retracts, through-port opens
•
Voltage at Y2:
Valve stem extends, through-port closes
•
No voltage at Y1 or Y2: Valve stem holds current position
Application
Functions
3-position or proportional
control signal
