SKD6xU Electronic Valve Actuators 24 Vac Proportional Control Technical Instructions
Document Number 155-180P25
February 28, 2018
Siemens Industry, Inc. Page 9
Wiring Diagrams
Figure 13. Connecting Terminals.
24 Vac
G System Potential (SP)
G0 System Neutral (SN)
Y Control input 0 to 10 Vdc or 4 to 20 mA (DIP switch selectable)
M Measuring neutral
U Position indication 0 to 10 Vdc or 4 to 20 mA, (see Table 2.
Z Override control
Table 2.
Actuator input signal
Receiving Impedance
Low (<500
Ohm)
High (>10K Ohm)
0 to 10 Vdc 0 to 20 mA 0 to 10 Vdc
4 to 20 mA 4 to 20 mA 2 to 10 Vdc
Figure 14. Auxiliary Switch ASC1.6.
Figure 15. Packing Heating Element
599-00417.
Troubleshooting
Check that the wires are connected correctly and attached securely.
Check for adequate power supply.
Check that the actuator is set for automatic operation. See the Start-Up section.