Kebco Frequency Drive Error List
M&R Printing Equipment, Inc. - Glen Ellyn, Illinois
129
Display
Plaintext Combivis Value Meaning
nop
no operation 0 no control release
E. OP
ERROR overpotential 1
Error: Overvoltage (DC -link circuit)
Occurs, if DC-link voltage rises above the permissable value.
Causes:
- poor control adjustment (overshooting)
- input voltage too high
- interference voltages at the input
- deceleration ramps too short
- braking resistor damaged or undersized
E. UP
ERROR underpotential 2 Error: Undervoltage (DC-link circuit). At F5-G E.UP is also dis-
played if no communication takes place between the power cir-
cuit and control card. Occurs if DC-link voltage falls below the
permissable value.
Causes:
- input voltage too low or unstable
- inverter rating too small
- voltage losses due to wrong cabling
- the supply voltage through generator/transformer breaks down
at very short ramps.
E. UPh
ERROR phase failure 3 Error: One phase of the input voltage is missing
(Ripple detection)
E. OC
ERROR overcurrent
4
Error: Overcurrent
Occurs, if the specified peak current is exceeded.
Causes:
- acceleration ramps too short
- the load is too large at turned off acceleration stop and turned
off constant current limit
- short circuit at the output
- ground fault
- deceleration ramp too short
- motor cable too long
- EMC
E.OHI
ERROR overheat internal 6
Error: Overheating in the interior: error can only be reset at
E.nOHI, if the interior temperature has fallen by at least 3
degrees C.
E.nOHI
no ERROR overheat
internal
7
No longer overheating in the interiorE.OHI, interior temperature
has fallen by at least 3 degrees C.
E.OH
ERROR overheat pow.
mod.
8 Error: Overtemperature of power module. Error can only be reset
at E.nOH.
Causes:
- insufficient airflow at the heat sink (soiled)
- ambient temperature too high
- line breakage to the temperature sensor
E.dOH
ERROR drive overheat
9 ERROR: Overtemperature of motor PTC. Error can only be reset
at E.ndOH, if PTC is again low-resistance. Causes:
- resistor at the terminals T1/T2>1650 Ohm
- motor overloaded
-line breakage to the temperature sensor
KEB Combivert error messages are always represented with an “E” and the appropriate error in the display. Error
messages cause the immediate deactivation of the modulation. Restart is possible only after reset. Malfunctions
are represented with an “A” and the appropriate message. Reactions to malfunction can vary. Status Messages
have no addition. The status message shows the current operating status of the inverter (e.g. forward constant
run, standstill etc.). In the following the display and their causes are described.
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