Installation Instructions

Document Number: 129-185
Installation Instructions
September 24, 2018
Page 4 of 9 Siemens Industry, Inc.
Figure 18.
Figure 19.
Figure 20.
Figure 21.
Wiring
CAUTION: Use care when removing the
knockout. Do not damage the circuit board.
If possible, use the top knockout position.
Do not use autotransformers. Use earth ground
isolating step-down Class 2 transformers.
Determine supply transformer rating by summing total
VA of all actuators used. The maximum rating for a
Class 2 step-down transformer is 100 VA.
Actuator
Power
Consumption
Actuators Per
Class 2 Supply
Circuit*
(80% of
transformer VA)
SKB62U
17 VA
4
SKC62U
28 VA
2
SKB82.50U
10 VA
8
SKB82.51U
15 VA
5
SKC82.60U
19 VA
4
SKC82.61U
20 VA
4
* Operating more actuators requires
additional transformers or separate 100 VA
power supplies.
Figure 22.
• Wiring for SKB/C62U is shown in Figure 23
and Figure 24.
• Wiring for SKB/C82…U is shown in Figure 25,
Figure 26, and Figure 27.
• The position output signal U will switch from 0
to 10 Vdc to 4 to 20 mA when a 4 to 20 mA
input signal is selected and used on the
terminal.