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Electronic timer relay

Hi, 

we have a customer with a rubber press machine, control voltage is 24VDC. We have a proximity sensor that through a relay switches ON a vacuum valve. Whilst the PS is triggered - up to 20mins, the vacuum valve is open. This valve appears to be over-heating. The machine only requires the vacuum for 20 seconds, so we need a 24vdc timer relay to shut off the supply to the valve after 20seconds. Can you suggest a suitable timer relay, remembering that the supply is ON for 20mins, then off for 5 mins and then back on for 20mins and so on....

Thank you

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October 17, 2018 13:51

So everytime the supply is on for 20 mins the vacuum is supposed to be on for 20 sec? Omron: H3DK-S1 AC/DC24-240 (with fuction E) would do the trick

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October 17, 2018 13:51

Hi, you could combine omrons multifunction relay ( https://no.rs-online.com/web/p/timer-relays/7334959/ ) with a regular delayed off relay (for example https://no.rs-online.com/web/p/timer-relays/7334953/ with function E, and 20 seconds). If you set the multifuctionrelay to B2 and 150seconds it will activate the regular relay i 5 min cycles.

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