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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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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 20 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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