1. Logic supply +Vcc (+5 or +24 V dc) and dc return is supplied through the 2 terminal logic supply connector, marked with + or –.
2. Logic supply dc return is connected to all odd terminals on the signal side.
3. Signal terminal is pulled up to +Vcc when not asserted, down to dc return when asserted.
4. Power-side terminals are polarized for dc applications, and non-polarized for ac applications.
The WRC4-A16T and 1781-A16T mounting boards can be used with up to 16 WRC4 series and 1781 series slim modules, respectively. The terminal block accepts only insulated wire with stripped ends. Each power side point is individually isolated from each other. The signal side has a common logic supply bus (+Vcc and dc return) shared with each of the modules. Specify WRC4-A16T-DIN and 1782-A16T for mounting on DIN rails, such as WRC50022.
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