KEB COMBIVERT F5-A Applications Manual page 484

Troubleshooting
Display COMBIVIS
E.LSF Error ! load shunt fault
E.ndOH no ERROR drive overheat
E.nOH no E. over heat pow.mod.
E.nOHI no ERROR overheat int.
E.nOL no ERROR overload
E.nOL2 no ERROR overload 2
E.OC Error ! overcurrent
E.OF ERROR! overfrequency
E.OH Error ! overheat pow.mod.
E.OH2 Error ! motor protection
E.OHI Error ! overheat internal
E.OL Error ! overload (Ixt)
Page 8.1 - 6
Value Meaning
15
11
36
7
17
20
4
61
8
30
6
16
COMBIVERT F5-A, -E, -H
Error: Load-shunt relay has not picked up, occurs for a short
time during the switch-on phase, but must automatically be reset
immediately. If the error message remains the following causes may
be applicable:
load-shunt defective
input voltage wrong or too low
high losses in the supply cable
braking resistor wrongly connected or damaged
braking module defective
Motor temperature switch or PTC at the terminals T1/T2 is again in
the normal operating range. The error can be reset now.
Temperature of the heat sink is again in the permissible operating
range. The error can be reset now.
No longer overheating in the interior E.OHI, interior temperature has
fallen by at least 3°C
No more overload, OL-counter has reached 0%; after the error E.OL a
cooling phase must elapse. This message appears upon completion
of the cooling phase. The error can be reset now. The inverter must
remain switched on during the cooling phase.
The cooling time has elapsed. The error can be reset.
Occurs, if the specified peak current is exceeded. Causes:
acceleration ramps too short
the load is too big at switched off acceleration stop and switched off
constant current limit
short-circuit at the output
ground fault
deceleration ramp too short
motor cable too long
EMC
DC brake at high ratings active (see 7.15.5)
Current frequency is above the permissible range.
Overtemperature of power module. Error can only be reset at E.nOH.
Causes:
insufficient air flow at the heat sink (soiled)
ambient temperature too high
ventilator clogged
Electronic motor protective relay has tripped.
Overheating in the interior: error can only be reset at E.nOHI, if the
interior temperature has dropped by at least 3 °C.
Overload error can only be reset at E.nOL, if OL-counter reaches 0%
again. Occurs, if the overload is longer than the permissible time (see
technical data). Causes:
poor controller adjustment
mechanical fault or overload in the application
inverter not correctly dimensioned
motor wrongly wired
encoder defective
further on next side
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