Hi again, I’m suggesting a way to revers primary and secondary relay functions.
To be specific: Use secondary relay as primary relay, while using primary relay for something else (warning light for “Max. unattended operation” for example).
An explanation of my situation:
I currently have one bridge’s secondary relay hooked up to my Shopbot CNC’s input, and set it up a pause switch. Without the bridge activate, the CNC won’t run, and if the user is unattended for more than the set amount of time, the machine will “Pause” (instead of stop if I hooke the control power directly to the bridge primary relay).
The setup works great so far, except the CNC is too distracting and too loud for user to notice the small flashing light on the bridge, or it’s warning sound. If I can set primary relay as the warning light relay (while using the secondary relay as the primary), I can set up a huge warning light as we usually do with the secondary relay.