I have a light bulb in an E-stop button fed from an 120 VAC output on the above mentioned module. The light is always ON no matter output is in ON condition or OFF condition. While trying to troubleshoot this problem, I found all un-connected outputs have 120VAC to neutral or ground in OFF mode. Those with proper loads have zero volt while in OFF mode. I thought there is something wrong with wiring or module, so I wired a new module with same TB3S base with only power to it and no outputs, it does the same thing. Could not understand why it's like that. However, I found the light bulb is a 24V LED, changed it to 120V, it works fine.
Can some expert explain the strange DO module for me?
Thanks a lot!
Can some expert explain the strange DO module for me?
Thanks a lot!