gravi
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Have a look at the micro power supply lines. There is probably either a dip or huge spike when the contactor switches. You need to add some filtering to the power supply lines.
Keith
Have a look at the micro power supply lines. There is probably either a dip or huge spike when the contactor switches. You need to add some filtering to the power supply lines.
Keith
when contactor gets on electromagnetic induction and huge spike are produced in the wire .i have one doubt sir can watch dog timer will stop this issue ?
Dear, connect an RC circuit at the Output to contractor to minimise the spike from it
You wiring details must be pretty screwed up if you are getting resets and already are using 2 power supplies and opto isolators!!! I would suspect some sort of ground loop. Is the ground return on power supply 1 connected to the ground return on power supply two? With the optoisolator drive, you do not need to have the two power supplies tied together in any way.
It is common practice to have a back diode and a small capacitor (like 1000 pf) across any relay coils to keep spikes locallized.
the contractor is AC driven or DC?, single phase or three phase?
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