Error
code
Error name Possible reason Solution
CE2-
Communication problem
on main board (There is
no communication data from
main board received in general)
EMC problem
Remove the environmental inter‐
ference or EMI
Defect on main board Replace the frequency converter
CE6-
Communication problem
on removable board (There
is no communication data from
removable received in general)
EMC problem
Remove the environmental inter‐
ference or EMI
Defect on removable board
Replace the removable board or
frequency converter
CE9-
Firmware
version error
Firmware version of I/O
board does not match with
others in the system
Contact with technical service
OE-4
Overvoltage
during stop
Power supply voltage is too
high
Check the input power supply
Surge voltage from the power
supply
Check the input power supply
Noise interference
● Check the wiring of control cir‐
cuit, main circuit and ground to
find out the source of interfer‐
ence
● Too much inertia on the load
Fig.9-1: Error description and solution
DOK-RCON03-EFC-3600***-IT01-EN-P
Rexroth Frequency Converter EFC 3600
Bosch Rexroth AG
Diagnosis
139/235