ACS880 Overcurrent/Earth Leakage fault
Dear All,
I'm using ACS 880 to drive a 5 Hp asynchronous motor for turning an antenna at a fixed rotation rate.
I have this kind of problem: at every start up the inverter provides an Over-current fault (2310) and after the manual fault reset an Earth leakage error (2330). I checked on line the absorbed current value using the Composer and it is always equal to 0A. The measurement related the grounding of the Inverter-Motor connection is OK, and also the motor isolation measured with a surge tester. How can I have an over-current tripping if the current value is 0A and the failure appears after less than 1s?
I hope someone can help me in solving this issue
MM
I'm using ACS 880 to drive a 5 Hp asynchronous motor for turning an antenna at a fixed rotation rate.
I have this kind of problem: at every start up the inverter provides an Over-current fault (2310) and after the manual fault reset an Earth leakage error (2330). I checked on line the absorbed current value using the Composer and it is always equal to 0A. The measurement related the grounding of the Inverter-Motor connection is OK, and also the motor isolation measured with a surge tester. How can I have an over-current tripping if the current value is 0A and the failure appears after less than 1s?
I hope someone can help me in solving this issue
MM
Asked 9 months ago
Answers
1
Hi
if you are using the sw Drive Composer, try to activate the signal monitor and record the current value.
The numeric display may in fact not be effective to see any peaks.
Also try to increase the acceleration ramp, because not knowing the mechanics downstream of the electric motor, it could be that inertia leads - with very low acceleration - to an overcurrent.
For the earth fault problem, if you have already checked the motor and cable with an insulation measuring instrument, it could also be tied to the inverter.
If you have another motor to test, you could rule out the dependence of the fault on the electric motor of your application or inverter.
I assume that you have used shielded cables and effective grounding connections.
Hope this help you
BR
Flavio
if you are using the sw Drive Composer, try to activate the signal monitor and record the current value.
The numeric display may in fact not be effective to see any peaks.
Also try to increase the acceleration ramp, because not knowing the mechanics downstream of the electric motor, it could be that inertia leads - with very low acceleration - to an overcurrent.
For the earth fault problem, if you have already checked the motor and cable with an insulation measuring instrument, it could also be tied to the inverter.
If you have another motor to test, you could rule out the dependence of the fault on the electric motor of your application or inverter.
I assume that you have used shielded cables and effective grounding connections.
Hope this help you
BR
Flavio
0
Hi, I have the same with acs600. Overload fault appears even with stopped motor fan! Any idea of reason?
BR
BR
Answered 8 months ago
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