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What is an E-19 error code on the ATV21/212 drive?

Issue:
What is the E-19 trip code on the ATV21/ATV212 drive?

Product line:
Altivar ATV21 ATV212

Environment:
All models, all serial numbers

Cause:
Drive trips with E-19 code.

Resolution:
E-19 error is a communication error between control CPUs on the ATV21/212 drive.  The fault is usually due to a loose connection on the cable connecting the control card and power board.  Another possible cause is that the power board or control board is damaged.  Make sure there is no 24V or 10V supply on VFD being shorted due to wiring.
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