12. Troubleshooting
12
47
438 9152-11/03
04.03
Service
Manual
T1
T2
T3
L1
N
N
L2
L3
RIPPEL ON DC BUS
The DC voltage level fluctuates too much.
If the power is on, be very careful when
working on the the machine.
Switch off the machine for at least 30 seconds to
ensure the motor controller has been completely
reset. Then try to start the machine again. If the
error returns, troubleshoot as follows:
1. Verify the voltage supply (230 V) to the motor
controller at the contactor X311.
Large voltage fluctuations Voltage OK
The motor controller is
probably defective.
2. Inspect the power supply (230 V) at the main power
switch Q1 on the machine.
Large voltage fluctuations Voltage OK
Defective cabling.
Troubleshoot the mains.
43
5181
X311
44
5365
Main power switch Q1
Fig.
43
Fig.
44
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