13.4 Error Code
13.4.1 Error 1 (OC-1): Overcurrent at Constant Speed
Possible reason Solution
Sudden load change in run mode Reduce occurrence and scale of sudden change
Low mains voltage Check input power supply
Motor power and frequency converter
power do not match
Motor power has to match with frequency converter power
Excessive inertia or load Check power of motor and frequency converter, check load
The motor cable is too long
● Decrease the carrier frequency (C0.05)
● Use a frequency converter with larger power
Excessive torque compensation
Reduce torque compensation setting (C2.22) till the current
decreases
Excessive overexcitation braking fac-
tor
Reduce [E0.55]
13.4.2 Error 2 (OC-2): Overcurrent during Acceleration
Possible reason Solution
Excessively short acceleration time Increase acceleration time (E0.26)
Excessive start-up frequency Reduce start frequency (E0.36)
Excessive load rotation inertia or im-
pact
Increase acceleration time (E0.26), reduce sudden load
change
Running command active while motor
is coasting
Restart after motor stop or start with speed capture (E0.35)
Wrong setting of V/f curve related pa-
rameters
Adjust setting of V/f curve related parameters
Motor power and frequency converter
power do not match
Motor power has to match with frequency converter power
Excessive torque compensation
Reduce torque compensation setting (C2.22) till the current
decreases
Wrong motor parameters setting Correct motor parameters setting
Excessive overexcitation braking fac-
tor
Reduce [E0.55]
13.4.3 Error 3 (OC-3): Overcurrent during Deceleration
Possible reason Solution
Excessively short deceleration time Increase deceleration time (E0.27)
Excessive load rotation inertia Use suitable brake components
Bosch Rexroth AG
Diagnosis
EFC x610 Series
242/389
DOK-RCON03-EFC-X610***-IT05-EN-P
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