Lenze EDS4900U-REG - Manual (Page 249)

Troubleshooting and fault elimination
8-4 48XX/49XXSHB0399
8.3 Fault messages
Note!
If the fault message is interrogated by a fieldbus, the fault message is represented
not by an abbreviation but a LECOM no. read from C167.
Display Cause Remedy
--- No fault - -
ACI Armature circuit
interrupted Defective fuse in the armature circuit or cable
interruption Check armature fuse or remove cable
interruption
CCr System fault Strong interference on control cables
Ground or earth loops in the wiring Screen control cables
Check PE wiring (see chapter 4.4”Installation
of a CE-typical drive system”)
CE0 Communication fault
(automation interface) Interference during transmission of control
commands via the automation interface Check wiring
CE9 Communication fault
(serial interface) Faulty messages from the serial interface. Check wiring
dEr Motor blocked High standstill torque or motor mechanically
blocked. Remove motor blockage or increase blocking
time under C124 or blocking current under
C123.
EEr External fault (TRIP-Set) A digital input assigned to the TRIP-Set
function has been activated Check external encoder.
Check polarity to activate TRIP set under
C118.
FCI Field circuit interrupted Defective field fuses F1 and F2 or
interrupted field circuit. Replace field fuses when no voltage is applied
or remove cable interruption.
LF Mains underfrequency Mains frequency < 47Hz Check mains frequency,
controller must only be driven within a
frequency range from 47 to 63 Hz.
LU Undervoltage Mains voltage < 340 V or 410 V
(Variant 500 V mains voltage)
Mains synchronisation has not detected any
voltage zero for more than 25 ms. Increase electronics supply separately with a
connected transformer or
use a controller with a lower mains connection
voltage.
LU1 Phase failure Failure of the mains voltage or mains
interruption Check mains voltage and remove mains
interruption
Adapt mains synchronisation to mains
conditions under C237.
OC5 Controller overload Frequent or excessive acceleration with
overcurrent
Permanent overload with I
A
> 1.05 I
Arated
Check drive dimensioning
OC6 Motor is thermally
overloaded Motor is thermally overloaded by, for instance,
- impermissibly high continuous currents
- frequent and excessive
acceleration processes
Check drive dimensioning
OF Mains overfrequency Mains frequency > 63Hz Check mains frequency
Controller must only be driven within a
frequency range from 47 to 63 Hz.
OH Heat sink temperature is
higher than the value set
in the controller
Ambient temperature
T
amb
> 45 •C or 35 •C
Heat sink very dirty
Incorrect mounting position
Allow controller to cool and ensure better
ventilation
Check ambient temperature in the control
cabinet
Clean heat sink
Change mounting position
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