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ACS355 Overvoltage fault

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powersoff

powersoff

Electrical
Jan 16, 2008
80
Does anyone have suggestions for ACS355 VFD that intermittently faults on overvoltage?
At the time of the last fault voltage was 831 volts. This fault is happening once every couple of days.
 
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What is the load? What is the voltage? What HP? Do you ramp down the speed quickly?

Bill
--------------------
"Why not the best?"
Jimmy Carter
 
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Blower Motor
497VAC Input
20hp
30 seconds deaccel time

DC bus voltage during running is observed around 680
 
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Do you have an idea of what is happening when it trips on OV? As in during Run, during Decel, while Off?

"Will work for (the memory of) salami"
 
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