CE9-: Firmware version error
Possible reason Solution
Firmware version of I/O board does not
match with others in the system
Contact with service
OE-4: Overvoltage during stop
Possible reason Solution
Excessive inertia on the load
● Increase deceleration time
● Use suitable brake components
Surge voltage from the power supply Check input power supply
t-Er: Motor parameter identification error
Possible reason Solution
Motor power and frequency converter
power do not match
Motor power has to match with frequency converter power
Wrong setting of motor parameters
Correct motor parameters setting according to motor name-
plate
No connection of converter and motor Check motor cable connections
SEr-: Service data handling error (the main board does not receive the answer
after the retry limit)
Possible reason Solution
EMC problem Remove the environmental interference or EMI
Problem with ope-
rating panel
● Check the wiring of control circuit, main circuit and grounding to find out the
source of interference
● If remote cable is be used, please use shielded cable
● If it happens again, replace the operating panel or contact with service
EFC 3600 Bosch Rexroth AG
Diagnosis
DOK-RCON03-EFC-3600***-IT03-EN-P
135/259
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