Bosch Rexroth EFC 3600 Instruction Manual page 32

Bosch Rexroth AG
Fault Indication
Error
Error name
code
SC
IPH.L
OPH.L
OH
CPUC
CPUE
28/35
Possible reason
External short circuit of motor
phase-phase
Earth surge
Internal fault of IGBT
Abnormal, omitted or broken con-
nection of frequency converter
power supply
Broken fuse
Imbalance in the three phases of
input power supply
Main circuit capacitor deteriora-
tion
Abnormal, omitted or broken con-
nection of frequency converter
outputs
Imbalance in the three phases of
outputs
Frequency converter (heat sink)
temperature is higher than max. al-
lowable temperature 85°C
Temperature detection circuit fault Contact with service
Fatal error with CPU on I/O board
Fatal error with CPU on operating
panel
Solution
Check the motor
Remove the short circuit and check the
motor
Contact with service
Follow operating procedures to check
power supply connections, remove
omitted or broken connection
Check fuse
Check if the imbalance situation ex-
ceeds requirements
Contact with service
Check the connections of frequency
converter outputs, remove omitted or
broken connections
Check the motor
Reduce ambient temperature, im-
●
prove ventilation and heat dissipa-
tion; clear dust, cotton wadding in
air ducts; check fan and its power
supply connection (if available)
Reduce the load if it is too heavy
●
Reduce the carrier frequency
●
(b0.21)
Check the wiring of control circuit,
●
main circuit and grounding to find
out the source of interference
If it happens again, contact with
●
service
Check the wiring of control circuit,
●
main circuit and grounding to find
out the source of interference
If it happens again, contact with
●
service
DOK-RCON03-EFC-3600***-IN02-EN-P
EFC 3600