KEB COMBIVERT F5, Справочное руководство, Страница: 285 / 349

285
Diagnostics and Troubleshooting
*Additional information at end of section
Error/Message Alt. /
(NUM)
Description Cause/Solution/Troubleshoot
Error Over
Voltage
(continued) EOP
(1) Measure DC bus directly and verify against DC bus
voltage read from the Diagnostics screen. The DC
bus should be approximately 1.41xAC Input phase-to-
phase.
If a braking resistor is used and there is an issue with the
braking transistor:
Test the braking transistor. (See Appendix)
If there is an issue due to high frequency noise:
Verify proper mains grounding.
Error Power
Unit EPU
(12) General power
circuit fault Inverter must be inspected and repaired by KEB or
replaced.
Error Power
Unit Changed EPuch
(50) The control card
recognizes a new
power stage (the
control card was
changed). This error should automatically clear itself.
Error Power
Unit Invalid EPuci
(49) During the
initialization the
power circuit
could not be
recognized
or w
as identified
as invalid
This error could occur from noise.
Disconnect terminal strip, encoder cable and serial
comm. (if used) and power cycle the drive.
Check phase-to-phase and phase-to-ground line
voltages to make sure they are balanced and not
causing noise.
Re-seat ribbon cable connecting control card to power
stage.
Error Rotor
Learn Deviation (168) When LE07 Rotor Detection Mode = NOP and LX23
Encoder Deviation Enable = On with Error. Learned
encoder pole position and average encoder position
having a difference value greater than LX22 Encoder
Deviation Value
Refer to Encoder slippage/mounting problems in Section
7..3 for additional information.