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Technical Instructions  

Pressure Independent Control 

Document No. 155-773 

SSD Series Electronic Valve Actuators 

September 1, 2015 

Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as 
design improvements are introduced. Product or company names mentioned herein may be trademarks of their respective owners.  
© 2015 Siemens Industry, Inc. 

 

Siemens Industry, Inc. 

Building Technologies Division

 

1000 Deerfield Parkway 
Buffalo Grove, IL  60089-4513 
USA 
+1-847-215-1000 

Your feedback is important to us. If you have 

comments about this document, please send them to 

[email protected]

 

Document No. 155-773 

Printed in the USA 

Page 8 

 

 

Troubleshooting 

Check 

Wiring

 for proper connections. 

If the actuator does not provide full flow or full close-off, check that the actuator is 
properly attached to the valve. 

If not: 

1.  Turn the power off. 
2.  Manually retract output shaft with 3mm wrench to zero position. 
3.  Tighten the bonnet ring onto the valve completely. 
4.  Power up. 

Dimensions 

 

Figure 13.  SSD Actuator Dimensions in Inches (Millimeters). 

 

 

Figure 14.  SSDx1.5U Actuator Dimensions in Inches (Millimeters). 

Service Envelope 

Minimum access space recommended:

 

8 inches (200 mm) above the actuator and beside the terminal plug. 

 

Содержание SSD81U

Страница 1: ...troke and a threaded valve bonnet that fits the actuator Features Nominal force 56 lbs 250 N Automatic stroke calibration on the SSD61 UL listed for plenum installation Reduced power consumption in holding position Direct coupled installation without tools hand tightened Manual override Visual position indication Application For use in heating and cooling HVAC applications with Pressure Independen...

Страница 2: ...l signal Floating 0 to 10 Vdc Output impedance 100K ohm Positioning accuracy 0 to 10 Vdc 2 of nominal stroke Function SSD81U SSD61U SSD81 5U SSD61 5U Run time in seconds 2 5 mm stroke 75 45 70 15 5 5 5 mm stroke 150 90 125 30 Spring return in seconds 2 5 mm stroke 15 15 5 5 5 mm stroke 30 30 Nominal force 56 lbs 250N 56 lbs 250N 67 lbs 300N 67 lbs 300N Capacitor charge time in seconds 180 max 180 ...

Страница 3: ...SSD81U only Warning Caution Notations WARNING Personal injury loss of life may occur if you do not perform a procedure as specified CAUTION Equipment damage may occur if you do not perform a procedure as specified Operation CAUTION A valve must be connected to the actuator before applying power If applying power to the actuator when a valve is not connected the actuator will respond to a control s...

Страница 4: ...r to control the valve stroke length The actuator will complete a stroke calibration each time the power supply voltage is connected CAUTION Whenever the SSD61U runs a self calibration routine Valve stroke 0 Max stroke Setpoint do not manually intervene in this process See Figure 3 Figure 3 SSD61U Self Calibration NOTE Correct calibration is possible only with valve strokes 1 5 mm For valve stroke...

Страница 5: ...ssive startups bypass the calibration stroke unless the memory is manually cleared If installing the actuator on a different valve such as on a replacement valve manually clear the calibration stroke from memory as follows 1 Remove the terminal cover using a Phillips head screwdriver 2 Locate hole on the circuit board shorting bars 3 Insert and gently twist a flat blade screwdriver to electrically...

Страница 6: ...red Figure 7 Manual Override Operation A Turn hex wrench counterclockwise to retract the spindle B Turn hex wrench clockwise to extend the spindle NOTE Do not perform manual override while the power supply is connected the actuator will not track accurately when the control signal is applied A short power off power on sequence is recommended to recalibrate the SSD61U actuator Wiring Do not use aut...

Страница 7: ...System Neutral G0 System Potential Table 2 Terminal Designations G G0 24 Vac Operating Voltage G System Potential G0 System Neutral Y 0 to 10 Vdc Control Signal Y1 Output shaft extends Y2 Output shaft retracts Start Up Check the wiring and the position indication When the position indicator is in the 1 position the output shaft is extended When the position indicator is on the 0 position the outpu...

Страница 8: ...ur feedback is important to us If you have comments about this document please send them to sbt_technical editor us sbt siemens com Document No 155 773 Printed in the USA Page 8 Troubleshooting Check Wiring for proper connections If the actuator does not provide full flow or full close off check that the actuator is properly attached to the valve If not 1 Turn the power off 2 Manually retract outp...

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