Frequently asked questions
What can cause an E21 fault on the Altivar ATV21 and ATV212 drives?
FA273613
10 June 2022
Issue:E21 fault code on ATV21 and ATV212
Product Line:
Altivar ATV21 and ATV212
Environment:
All
Cause:
Drive powers up with an E21 CPU is failing
Resolution:
The E21 is a CPU error 2 fault. If you power cycle and the fault does not clear the drive will need to be replaced.