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Can the output relays of the 170ADM39030 operate in a sinking mode (switch the negative side of the circuit)?

Published date: 28 January 2019

Title

Can the output relays of the 170ADM39030 operate in a sinking mode (switch the negative side of the circuit)?

Issue

 

Product Line

Modicon Momentum

Environment

 

Cause

 

Resolution

Yes, the outputs can switch the positive (sourcing) or negative (sinking) side of the supply voltage. The source voltage and common that is wired to the terminal blocks would be reversed to accomplish a sinking output. There are no internal diodes across the relays that would prevent this.


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