Transistor output leakage
Transistor output leakage
(OP)
I have an application where a transistor output on a GE PLC is used to trigger a solid state interposing relay. The could voltage on my relay is 120VAC, and the PLC card is rated for 120 as well. It seems as though the leakage through the transistor is enough to energize my interposing relay. I can see the LED on my relay drop in intensity, but it remains slightly lit, and my contacts remain energized.
Are these two devices just not compatible, or is there a proper way to overcome this issue, such as using a certain device similar to a snubber etc.?
Are these two devices just not compatible, or is there a proper way to overcome this issue, such as using a certain device similar to a snubber etc.?





RE: Transistor output leakage
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RE: Transistor output leakage
That will shunt 2mA around the SSR. It might be enough.
Keith Cress
kcress - http://www.flaminsystems.com