179
Diagnostics and Troubleshooting
*Additional information at end of section
Error/Message Description Cause/Solution/Troubleshoot
E.OH2
Error Motor
Protection
Electronic
Motor Overload
protection was
activated.
Excessive RMS motor current according to the LF.08
Electric Motor Protection overload curve or if the LF09
Peak Motor Current Factor is exceeded for more than 3
seconds for PM Synchronous Motors.
For induction motors the baseline current for Electric
Motor Protection corresponds to the LM09 Electric Motor
Overload Current.
For PM Synchronous Motors the baseline current for
Electric Motor Protection corresponds to the LF.12 Motor
Causes of excessive RMS current would be:
Incorrect motor data.
Verify motor data, speci cally the motor rated
speed and frequency relationship for PM
Synchronous Motors (see Section 5.6.2).
Verify correct encoder settings including:
LF.27 Encoder Pulse Number
LF.28 Swap Encoder Channels (A/B setting)
LF.77 Encoder Pole position for PM Synchronous
Motors. Relearn Encoder Pole Position as needed
(see Section 5.11)
High mechanical load/issues (friction).
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