Wiring Diagrams; Manual Override; Troubleshooting - Siemens MT Series Technical Instructions

Technical Instructions
Document Number 155-314P25
June 1, 2023

Wiring Diagrams

Manual Override

Start-up

Troubleshooting

Page 4
Figure 2. SSC81U Neutral Switching
Non-Spring Return.
For manual positioning, the override knob is
in the center of the position indicator. See
Figure 4.
Check the wiring and the position indicator.
See Figure 5.
Position Indicator
0
1
Check the wiring for proper connections.
MT Series SSC81U Electronic Valve Actuator, 24 Vac Floating Control
Y2 Retracts actuator shaft
Y1 Extends actuator shaft
G System potential (hot)
Output Shaft
Retracted
Extended
Figure 3. SSC81U Hot Switching
Non-Spring Return.
Figure 4. Manual Override.
Figure 5. Position Indicator
(Shown in the 0 Position).
Siemens Industry, Inc.