KEB COMBIVERT F5 Reference Manual page 283

Error/Message Alt. /
(NUM)
Error EOS
Overspeed (58)
(continued)
*Additional information at end of section
Diagnostics and Troubleshooting
Description Cause/Solution/Troubleshoot
Excessive current
Incorrect motor data, specifically the motor
rated speed and frequency relationship for PM
Synchronous Motors (see Section 5.5.2, LM02
or LM04 for details).
Incorrect Encoder Pole Position for PM
Synchronous Motors. Relearn Encoder Pole
Position as needed (see Section 5.10.1 or 5.10.2
Speed gains set too high or low).
For an unloaded PM Synchronous Motor, then
default speed gains LC03-12 may be too high,
causing the machine to jerk quickly. If left too low
for normal operation, the drive may not track the
speed.
Modulation grade exceeds maximum.
If the modulation grade in Diagnostic Screen #2
or DG10 exceeds 100% there may be a loss of
speed control.
Sudden, excessive movement.
Incorrect motor data, specifically the motor
rated speed and frequency relationship for PM
Synchronous Motors (see Section 5.5.2, LM02 or
LM04 for details).
Incorrect Encoder Pole Position for PM
Synchronous Motors. Relearn Encoder Pole
Position as needed (refer to Section 5.10.1 or
5.10.2).
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