Siemens Building Technologies SQV Valve Actuator Data Sheet
SQV Valve Actuator
Siemens
Product Guard
Warranty
24 Vac/dc, Floating or Proportional Control
Floating, 0-10 V or 4-20 mA
Spring Return
PICV
SQV Series Electro-Motoric Valve Actuators
Description
Pressure Independent Control Series SQV Electro-Motoric
Valve Actuators require a 24 V ac or dc power supply and
receive a oating, 0-10 V or 4-20 mA signal to control
a valve. The SQV Actuators are available as either fail
open or fail closed when used with the Siemens Flanged
Pressure Independent Control Valves.
These actuators are designed to work the 2-1/2 and 3 inch
Pressure Independent Control Series Valves with a
3/4-inch (20 mm) stroke and the standard Siemens
Flowrite bonnet connection.
Features
• Operating voltage: AC/DC 24V
• Control signals: 3-position, DC 0 to 10V, DC 4 to 20 mA
• Fail-safe function
• Position feedback
• Manual adjuster
• Position and status indication (LED)
• Selectable positioning times from 40 to 120 seconds
for 3/4 inch (20 mm) Stroke
• Selection of acting direction and ow characteristic
• Direct mounting on Pressure Independent
Control Valves
• UL Listed
Applications
Electro-Motoric actuators to operate Siemens Pressure
Independent Control Valves with 20 mm stroke as control
valves for large air handling units and distribution of
hot and chilled water.
A-97
Valves
Siemens
Product Guard
PLUS 3 Warranty
www.usa.siemens.com/hvac
SQV Series Electro-Motoric Valve Actuator Specifications
A-98
Operating Voltage ................................................................ 24 Vac ±20%
24 Vdc ±15%
Frequency ...............................................................................50 to 60 Hz
Fusing of Supply Lines .......................................Maximum 10 Amp slow
Power Consumption .............................................................20 VA/7.5 W
Operating Data
Positioning time open/close.................................................. 40 seconds
(default for 20 mm stroke) Positioning time
depends on the DIP switch setting.
Positioning force ....................................................................... ≥ 1100 N
Nominal stroke .............................................................20 mm to 40 mm
Admissible temperature of medium
in the valve ..............................................34°F to 248°F (1°C to 120°C)
Signal Inputs
Terminals G1, G2 ....................................................................3-position
Voltage.......................................................................... 24 Vac ±20%
24 Vdc ±15%
Terminal Yu
Voltage............................................................................. 0 to 10 Vdc
Input impedance ................................................................. ≥ 100K Ω
Terminal Yi
Power ......................................................................... DC 4 to 20 mA
Input impedance .........................................................................50 Ω
Fail-safe Function
Terminal G
SQV91P30U .............................................. Loss of operating voltage
Actuator stem retracted, pressure
independent valve fully open (100%)
SQV91P40U .............................................. Loss of operating voltage
Actuator stem extended, pressure
independent valve fully closed (0%)
Spring return time ................................................................. 15 seconds
Position Feedback
Position feedback U ...................................................DC 0 to 10V + 1%
Load impedance .......................................................... >2.5K Ω resistive
Load ..............................................................................Maximum 4 mA
Electrical Connections
Wire cross-sectional areas ............................................... 14 to 30 AWG
Cable entries (1/2" conduit adapter included) ......... 2 openings M20 x 1
1 opening M16 x 1.5
Degree of Protection
Housing from vertical to horizontal ........................... NEMA 4/4X (IP 66)
Insulating class, AC/DC 24V ................................................................III
Environmental Conditions
Operation
Mounting location ..................................Indoors (weather-protected)
Temperature ..........................................32°F to 122°F (0°C to 50°C)
Humidity (non-condensing)................................................... <95% rh
Transport
Temperature ..................................... -22°F to 158°F (-30°C to 70°C)
Humidity ................................................................................ <95% rh
Storage
Temperature ..................................... -22°F to 149°F (-30°C to 65°C)
Humidity ........................................................................... 5 to 95% rh
Valves
SQV Series Actuator Product Ordering
Description Part No.
Floating, 0 to 10V or 4 to 20mA,
Normally Open
Floating, 0 to 10V or 4 to 20mA,
Normally Closed
Actuator
Prex Code
SQV91P30U 238
SQV91P40U 239
www.usa.siemens.com/hvac
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