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F0021 CURR MEAS Fault in ABB ACS550 Drive

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(@click2electro)
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How can resolve problem F0021 CURR MEAS Fault in ABB ACS550 Drive ?

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Posts: 5095
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(@click2electro)
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Internal fault. Current measurement is out of range

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(@obaidullah7)
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@click2electro f0021 fault show acs550 how to solve this problem

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(@click2electro)
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Change CT, this problem comes when drive CT faulty.

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(@click2electro)
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Also check CT feedback voltage on 40 pins connector (9,10,11 upper layer from transformer side) you get 7V DC voltage which is CT feedback.

- if you get different voltage then change CT.

- After change CT fault comes then change IC 33074 IC.

# Another way to check CT is first remove CT then power-up drive if fault not coming then CT faulty.

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(@onilll)
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Joined: 2 months ago

Have same problem. 180 Amp drive. Was exploded incoming SCR, replace all three.

Find problem on main board repair it. Did not help. Replaced board, same problem. 

Replace control board. Nothing.

SCIB control board with Current Sensor Transducers  - check all all components, all of them OK, all three channels similar. Cables from main board to SCIB board OK.

 

 

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