Problems with RLY8XA

[bbowser]

Glad to see you got it working DC ! !
I have not tested a RLY8XA but I was pretty sure the code was correct.
Thanks Sparkman for the help

[sparkman]

You're welcome! Glad that fixed it.

Cheers
Al

[DC]

Well that was a darn good guess! That's exactly what it was. The voltage was about 8V. I changed the power supply to one that supplies 12V and it works perfectly now!

The reason the relay state didn't change is that the relays didn't actually activate. I thought they did because the LED was lit but after I changed the power supply, I heard a distinct click when they activated. I was not hearing that before.

All is well now. I'm using this to open and close a valve on our main water line. I have leak detectors and when any of them detects a leak, HS closes the main valve very quickly.

THANK YOU!

[sparkman]

Just a guess, but I've seen similar behavior with other relay boards if the power supply was either under-voltage or not able to supply enough current.

Cheers
Al

[DC]

I am having problems with a new RLY8XA.

1. When the relays are energized, the NO and NC contact states do not change. I get continuity between C and NC whether the relay is energized or not and I do NOT get continuity between C and NO even when the relay is energized.

2. I cannot turn two relays on at one time. If I turn on Relay 1, it comes on (the LED lights). If I then turn on Relay 2, its LED lights for about a second and then BOTH LEDs go off. If I turn either one off, the other one will come back on.

I know this isn't normal behavior. Could I have a bad RLY8? It's brand new.

I also posted this in the Applied Digital forum but I wanted to post it here too because the help here is excellent.

P.S. This is NOT a problem with the plug-in. The plug-in controls the relays as expected. It's that the relays don't behave as expected.