Input Wiring
Connecting a Voltage Input
1. Using a Female DB37 connector, attach the appropriate wire from the Input signal
pin (pin 1 for Input1, pin 2 for Input2, etc.) to the positive terminal of the external
power supply.
2. Connect the negative terminal of the external power supply to one of the terminals of
the contact closure or push button.
3. Connect the appropriate Input Return pin to the other terminal of the contact closure
(pin 20 for Input1, Pin 21 for Input2, etc.)
Figure 3 - Sample connection for a Voltage Input to Input1 of the
Parallel Inputs connector. The terminal blocks are used for power
bussing and modularization of the input signals.
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