ECN Forum Forums General Topics of the Trade General Discussion Area On Delay Relay with Auto Reset

Sorry for not posting back sooner.

As I suspected I had the right relay but I was looking in the wrong location as to where I should place it. In the end I used the Omron H3CA relay. When either the prox card entry or push button exit is activated a signal is sent to the pneumatic control board which in turn powers the 120 VAC air actuator and door strike N.C. relay. This is where I placed the delay. Like Geoff and andey stated 1 second is too long. I set the Omron for a 0.5 sec. delay between the pneumatic control board and the air actuator and it appears to be working perfectly. Previously we had the pressure turned down to keep the door strike from jamming which prevented it from opening a full 90 degrees. Now the pressure is back up and the door is opening to a full 90.