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4-18
Chapter 4. WIRING
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Internal circuit for controller components for connecting external switch inputs
Handling Precautions
Do not connect to the SDC20/21 or SDC30/31 series in parallel. Doing so
might damage the external switch inputs of the SDC20/21 or SDC30/31.
Internal circuit
41
48
Add-on terminal base
12 Vdc
12 Vdc
12 Vdc
12 Vdc
Internal circuit
21
24
Standard terminal base
25
External switch
input
External switch
input