Question about Omron Healthcare Omron H3cr-a-ac100-240v Timer 0.05s-600h Dpdt 5a250vac

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I use Omron H3CR 8pin to my CCTV in my car. I use pin 2 for ground,pin 7 for ignition, pin 4&5 for direct current from battery and pin 8 to +ve CCTV. My problem is when I off the engine the timer is not function (no power indicator),but the CCTV continues on (CCTV suppose off when timer is over); but when I switch engine, the timer is on (power indicator on), I change by not using the ignition wire,(which mean I connect pin 7 along with the pin 4 & 5) the power indication work well & after engine off & the timer setting is over,the out indication is appear,but the problem is, if I start engine again,the CCTV is not on & after i pull out the timer & reinsert it again,then only everything goes well. I need to know how to make sure that after I stop the engine, the CCTV will off after the timer is over but when I start the engine back the timer should automatic show power indicator on and the CCTV work.Please assist

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1 Answer

I don't have exact schematic for your 8-pin timer.
Use multimeter read ohms and voltage from pin socket to pin socket.
Use multimeter set to ohms to read continuity of pins on timer.
Pin timer relays have NO NC pins.
Some pins are Normally Open (no current flows until timer turns on)
The other pins are Normally Closed (current flows until timer turns on, and when timer turns on, this circuit turns off)

Posted on Apr 08, 2011

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Posted on Jan 02, 2017

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