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MT Series SSC Electronic Valve Actuator, 24 Vac Floating Control 

Technical Instructions 

 

Document Number 155-314P25 

 

May 10, 2011 

 

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 the trademarks of their respective owners.  
© 2011 Siemens Industry, Inc. 

 

Siemens Industry, Inc. 

Building Technologies Division 
1000 Deerfield Parkway 
Buffalo Grove, IL 60089 
USA 
+ 1 847-215-1000 

Your feedback is important to us. If you have comments 

about this document, please send them to 

[email protected]

 

Dimensions 

 

 

 

 

2

(48)

4.4

(110,8)

3.5

(89)

.85

(21,6)

4.5

(115,1)

5.5

(140)

EA1159R1

0

1

Figure 10.  SSC Actuator Dimensions in Inches (Millimeters).  

Service envelope 

Minimum access space recommended: 

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

 

 

Document No. 155-314P25 

Printed in the USA 

Page 7 

 

Содержание MT Series

Страница 1: ...dication Application The Powermite 599 MT Series SSC81 electronic actuators and MT Series valves are used in heating and cooling applications They are used in liquid and steam applications The SSC81 series accepts plenum cable or 3 8 inch flex conduit connection Product Numbers Table 1 Product Numbers Actuator Operating Mode Actuator Prefix Code SSC81U Non Spring Return Fail in Place 259 SSC81 5U ...

Страница 2: ...A at ultra cap load 2 VA at normal operation Running time SSC81U 125 s 2 at 60 Hz SSC81 5U 125 s 2 at 50 60 Hz Functional operation Spring return SSC81 5U only Figure 1 30 s Nominal stroke 7 32 inch 5 5 mm Nominal force 67 lb 300N Stroke signal relationship Linear Capacitor charge time Figure 1 max 180 sec Spring return SSC81 5U only Non mechanical electronic returns to stem up 0 position Agency c...

Страница 3: ... the actuator shaft proportionately to the length of time the signal is applied In the event of a power failure with no control voltage the non spring return SSC81U will hold its last position In the event of a power failure the SSC81 5U returns to the stem up 0 position The SSC81 5U includes an electronic return mechanism that functions as follows See Figure 1 At power up t0 a capacitor must char...

Страница 4: ...mory on the first startup of the actuator Successive 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...

Страница 5: ... CONTROLLER ACTUATOR EARTH GROUND ISOLATING CLASS 2 TRANSFORMER FOR 24 Vac POWER 120 Vac 1 0 Y2 Y1 G 24 Vac EA0795R1 Figure 4 SSC81U Neutral Switching Non Spring Return EA1234R1 NEUT CONTROLLER EARTH GROUND ISOLATING CLASS 2 24 Vac TRANSFORMER 120 Vac 24 Vac ACTUATOR G Y2 Y1 G0 1 0 0 Figure 5 SSC81 5U Neutral Switching Spring Return Y2 Retracts actuator shaft Y1 Extends actuator shaft G System pot...

Страница 6: ...f the position indicator See Figure 8 CLOCKWISE EXTENDS SHAFT COUNTER CLOCKWISE RETRACTS SHAFT EA1161R1 A B A B Figure 8 Manual Override Start up Check the wiring and the position indicator Figure 9 Position Indicator Output Shaft 0 Retracted 1 Extended 0 1 EA1158R1 Figure 9 Position Indicator Shown in 0 Position Troubleshooting Check the wiring for proper connections Service Kits If the actuator ...

Страница 7: ... owners 2011 Siemens Industry Inc Siemens Industry Inc Building Technologies Division 1000 Deerfield Parkway Buffalo Grove IL 60089 USA 1 847 215 1000 Your feedback is important to us If you have comments about this document please send them to sbt_technical editor us sbt siemens com Dimensions 2 48 4 4 110 8 3 5 89 85 21 6 4 5 115 1 5 5 140 EA1159R1 0 1 Figure 10 SSC Actuator Dimensions in Inches...

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