benaiahhenry
Lifetime Supporting Member
Has anyone here ever used the AB 440C-CR30 programmable safety relay?
I'm having a hard time figuring out how to make it perform the following function:
I have a system with a light curtain and an e-stop chain. I want the light curtain to be self-resetting, but I want the estop to be a manual reset (even after pulling out the estop, the operator should have to press "restart")
I've figured out how to make it work if I use two different safety outputs, one for the estop and one for the light curtain, but I can't figure out to to make it work with a single safety output.
I've attached a zipped copy of the program I have so far. It also shows a delayed off output since I'll be using that to drop the STO on a drive after the enable is dropped, but I'm not worried about that piece.
At this point I don't have actual hardware, I'm just trying to make sure it can do what I want before buying
Thanks for any input!
I'm having a hard time figuring out how to make it perform the following function:
I have a system with a light curtain and an e-stop chain. I want the light curtain to be self-resetting, but I want the estop to be a manual reset (even after pulling out the estop, the operator should have to press "restart")
I've figured out how to make it work if I use two different safety outputs, one for the estop and one for the light curtain, but I can't figure out to to make it work with a single safety output.
I've attached a zipped copy of the program I have so far. It also shows a delayed off output since I'll be using that to drop the STO on a drive after the enable is dropped, but I'm not worried about that piece.
At this point I don't have actual hardware, I'm just trying to make sure it can do what I want before buying
Thanks for any input!