240v Delay Relay

You'll need to add a timer. If you want to do it with a few components, tell us what relay you are using. Also when you want to play, remember that such a component also affects the switch- ON timing.

A relay coil @240 VAC will also activate the relay with, say 48 Volts DC. This might be a good reference to start your design. (diode, resistor, capacitor in a hold circuit)

Small UPS that keep's output up for few sec after input fails. You can replace battery by adequate cap or cap bank.

I'm not sure about the question, are you trying to delay the signal or the actual contact movement????

Since you don't give any more specs, I'll give you only a principle sketch.

When the relay has power, the capacitor will store the energy and release it to the coil when the feed voltage stops. The time depends on the value of C and R.

R is facultative

Success. D

Good. Thanks. I will try it out.

Works all the time with regular relays. Contactors are more difficult. I had American octal delay relays from Syracuse that had nothing more in it. I understand the question I hope. Getting stuff to replace isn't always easy.

I have 120 VAC relays here working on 24 Volts DC. To have them trimmed, I had to loosen the spring slightly.

English is only my 4th language and I might have misunderstood your OP, although there might be a lot of celebration alcohol in the heads here.

If you are asking if there is a way to convert an existing simple control relay into an off-delay timer by adding something to the control circuit, the answer is no. It is FAR FAR simpler to just replace your relay with an off-delay timer.

like this

Some older industrial relays, now nearly obsolescent, have add-on contact decks with pneumatic timers. If you are so (un)lucky as to have any...there may actually be a simple solution.

all he needs is a solid state "delay on make" timer like the picture I showed,,,,piece of cake

Sounds more like delay-on-break to me.

me too....picky

Allen Bradley has a relay that is pneumatically delayed.Sounds archaic, and crude, but is surprisingly accurate and very durable. Very simple to add to an existing circuit..I have seen them in use in very hostile environments and they worked flawlessly for years.

http://www.ebay.com/itm/Allen-Bradley-Pneumatic-Time-Delay-Relay-Bulletin-700-Type-PT-P400A1-/320979980640

Good luck

We use them for 40 years in a museum brewery. Allen Bradley. Big and heavy, but they never have let us down. But it is not what the OP asks. Who reads it?

The way I interpreted the OP's request was to be able to delay the opening(drop out) of a relay by a few seconds.The A/B can do this,either "ON" or "OFF" delay.And they come in various sizes and configurations.

The beauty of the pneumatic delay is it works even if control power fails,providing an anti-recycle feature for short interruptions of control power.Not to be confused with a typical anti-recycle circuit on A/C units.

Check out the link I provided to OP.They still make them.

But who reads links anyway?

What you need is two two-way switches, and one intermediate switch, simple, as long as you put the intermediate switch in the middle of the circuit.

Bazzer

http://uk.rs-online.com/web/p/products/3405414/ (usual disclaimer)