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

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

Product line:
Altivar ATV21 ATV212

All models, all serial numbers

Drive trips with E-19 code.

E-19 error is a Communication error between control CPUs.  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.  In this case, the VFD will need to be replaced.
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