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For a stone crusher, which is driven by 2 identical motors (each 160kw) has VFD (SCHNEIDER ATV930C22N4C) for 1st motor and 2nd motor starts DOL after 1st motor has achieved full speed.
As both motors share common belt, load should be equally shared and both motor should have equal current at full load.
But in my case, VFD motor takes almost double the share w.r.t 2nd motor which is still on Contactor.
VFD motor 250-300 amps (on display)
Contactor motor 100-150 amps (Clamp meter)
Can I do something in VFD to make both motor share load equally???
Mechanical belt adjustments we already tried...
As both motors share common belt, load should be equally shared and both motor should have equal current at full load.
But in my case, VFD motor takes almost double the share w.r.t 2nd motor which is still on Contactor.
VFD motor 250-300 amps (on display)
Contactor motor 100-150 amps (Clamp meter)
Can I do something in VFD to make both motor share load equally???
Mechanical belt adjustments we already tried...