Buzzer/Horn

[Ansky]

Need a little help here, I would like to add a horn in our warehouse that will sound when the building is on em. power(generator).Generator tech has gave us a set of contacts that will close when gen is running(com and n/c),I have a 120v horn(federal 350) that I want to sound when running and use a push button to silence it. I know we are going to need a relay of some sort I am just not sure how to get this to all work together.
Thanks in advance:thumbsup:

 

[augie47]

(Bump)(Post had been held pending discussion)

 

[kwired]

Need a little help here, I would like to add a horn in our warehouse that will sound when the building is on em. power(generator).Generator tech has gave us a set of contacts that will close when gen is running(com and n/c),I have a 120v horn(federal 350) that I want to sound when running and use a push button to silence it. I know we are going to need a relay of some sort I am just not sure how to get this to all work together.
Thanks in advance:thumbsup:

Use the normally closed contact in the relay to switch the horn, and your silence button is essentially a "start" button for the relay with another normally open contact of the relay used as a holding circuit. Power from generator and if generator power is lost, the relay drops out and resets.

 

[dicklaxt]

Yep that'll work,,,,,,,,, If it were mine I'd use aux 120v control power(not generator power) and add a power available status light that had a push to test contact which could be used for a horn test.

dick