Installation Instructions

Document No. 129-611
Installation Instructions
January 19, 2016
Page 2 of 3 Siemens Industry, Inc.
Wiring
All wiring must conform to NEC and local codes and
regulations
Use earth ground isolating, step-down Class 2 transformers.
Do not use auto transformers.
Determine supply transformer rating by adding up the total VA
of all actuators used.
The maximum rating for Class 2 step-down transformers is
100 VA
Do not power more than 10 actuators with one transformer.
(Use 0.5 amp fuse on secondary actuator.)
1. Remove actuator cover screws using either a No. 2
Phillips or a No. 2 flat-blade screwdriver and detach
actuator cover.
2. Access terminal block and attach wires per Figure 2
through Figure 5.
3. Replace actuator cover. Use cover screws to secure
actuator cover in place.
CAUTIONS:
Terminals G and G0 must be properly wired for
correct function and full life of the actuator.
If the actuator makes a buzzing noise upon
reaching setpoint, G and G0 are improperly
wired and should be reversed.
G
Hot (+)
Y1
Connected to Neutral (-) extends actuator stem
Y2
Connected to Neutral (-) retracts actuator stem
Figure 2. SAS81.03U 24 Vac NSR Floating Control –
Neutral Switch.
G
Neutral (-)
Y1
Connected to Hot (+) extends actuator stem
Y2
Connected to Hot (+) retracts actuator stem
Figure 3. SAS81.03U 24 Vac or 24 Vdc NSR Floating
Control – Hot Switch.
G
Hot (+)
G0
Neutral (-)
Y1
Connected to Neutral (-) extends actuator stem
Y2
Connected to Neutral (-) retracts actuator stem
Figure 4. SAS81.33U 24 Vac SR Floating
Control – Neutral Switch.
G
Hot (+)
G0
Neutral (-)
Y1
Connected to Hot (+) extends actuator stem
Y2
Connected to Hot (+) retracts actuator stem
Figure 5. SAS81.33U 24 Vac or 24 Vdc SR Floating
Control – Hot Switch.
Start-Up
The valve body (normally open or normally closed) determines
action of the complete valve/actuator assembly.
Troubleshooting
• Check wiring for proper connections and secure
attachments.
• Check for adequate power supply.
References
Powermite 599 MT Series SAS Electronic Valve Actuator,
24 Vac or 24 Vdc, Floating Control (3-Position) Technical
Instructions (155-681).