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Powermite 599  

Technical Instructions 

Document No. 155-682 

January 19, 2016 

 

MT Series SAS Electronic  
Valve Actuator 24 Vac or 24 Vdc,  
Proportional Control 

 

 

SAS61.03U

 

 

SAS61.33U

 

 

Siemens Industry, Inc. 

Description 

The Powermite 599 MT Series SAS Electronic Valve Actuator requires a 24 Vac or 
24 Vdc supply and receives a 0 to 10 Vdc or a 4 to 20 mA control signal to proportionally 
control a valve. This actuator is designed to work with Powermite 599 MT Series 
terminal unit valve with a 7/32-inch (5.5 mm) stroke. 

Features 

  Maintenance-free with reversible motor. 

  Position indicator. 

  UL listed for plenum installations. 

  0 to 10V or 4 to 20 mA. 

  LED status indicator. 

  Auto calibration 

  Position output signal 0 to 10 Vdc. 

  Manual positioning knob with stroke indication allows for repositioning. 

  Mechanical spring returns the valve to its normal (fail-safe) position in power-off 

conditions (SAS61.33U Actuator only). 

Application 

For use in small to medium HVAC installations with Powermite 599 Series terminal unit 
valves with a 7/32-inch (5.5 mm) stroke requiring a minimum of 90 pounds force (400N). 
They can be used in liquid and low pressure steam service applications. 

Table 1.  Ordering Information. 

Product Numbers 

Product Number

 

Actuator type 

Actuator Prefix Code 

 

SAS61.03U 

Non-Spring Return (Fail-in-place) 

364 

 

SAS61.33U 

Spring Return (Fail-safe) 

365 

 

Ordering 
Information 

To order a complete valve plus actuator assembly from the factory, combine the 
actuator prefix code with the suffix of the valve product number. See TB 251 

Powermite 

599 Series MT Series Terminal Unit Valve and Actuator Assembly Selections Technical 
Bulletin 

(155-306P25) for selection procedures. 

To order an actuator only, use the product number in Table 1. 

Summary of Contents for MT SAS Series

Page 1: ...n allows for repositioning Mechanical spring returns the valve to its normal fail safe position in power off conditions SAS61 33U Actuator only Application For use in small to medium HVAC installations with Powermite 599 Series terminal unit valves with a 7 32 inch 5 5 mm stroke requiring a minimum of 90 pounds force 400N They can be used in liquid and low pressure steam service applications Table...

Page 2: ...t load 1 mA max Z Forced control Resistance 0 to 1000Ω stroke proportional to R Z connected to G Max stroke 100 Z connected to G0 Min stroke 0 Voltage Max 24 Vac to 20 Max 24 Vdc 20 15 Current draw 0 1 mA Functional Operation Running time at 60 Hz 30 seconds Spring return SAS61 33U only 14 seconds Nominal stroke 7 32 inch 5 5 mm Nominal Force 90 lbs 400N Spring return SAS61 33U only Mechanical spr...

Page 3: ...o 10 Vdc signal U produces position feedback to the controller Mounting and Installation Figure 1 Acceptable Mounting Positions Mount the actuator in any position except with the actuator lower than the valve Figure 1 shows acceptable actuator mounting positions for water applications The recommended mounting position of the actuator for low pressure steam applications is between 45 and horizontal...

Page 4: ...AC DC 24V 0 to 1000 Ω Figure 2 Terminal Connections WARNING Terminal connection G is 24 Vac HOT not ground CAUTION G0 and G must be properly wired for correct function and full life of the actuator Figure 3 Wiring Diagram The diagram shows all possible connections The application determines which connections are used Start up The valve body normally open or normally closed determines the action of...

Page 5: ...spective owners 2016 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 Document No 155 682 Printed in the USA Page 5 Dimensions A B C1 C2 D E Inches 5 9 3 1 0 9 2 8 1 2 0 9 4 8 m...

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