safety of 230 v load

[asbopardikar]

hi ,
i want to make following circuit where all following conditions can be achieved in single circuit:
1)when push button is pressed , 230v bulb should get ON and remain ON , even when push button is released.
2)when 230v supply goes off, bulb will automatically go OFF.
3) But when 230 v supply resumes, bulb will not go ON , unless you press the push button once.
please guide me and give me circuit diagram.

 

[JimB]

This is a fairly standard circuit, usually refered to as a No Volt Relay or a No Volt Release.

See the attached sketch.

The Start PB has a normally open contact, the Stop PB has a normally closed contact, and the relay has a normally open contact.

When the Start PB is pressed, the relay is energised and the contacts close. The relay is now energised as long as the supply is present, or until the Stop PB is pressed.

JimB

 

[Hero999]

If you're implementing an emergency stop, you'll to buy a relay and a switch which pass the relevant safety standards in your jurisdiction so I think your best bet is to buy an approved emergency stop module.