
13.4.7 Error 7 (OE-4): Overvoltage during Stop
Possible reason
Solution
Excessive inertia on the load
● Increase deceleration time (E0.27)
● Use suitable brake components
Surge voltage from the power supply
Check input power supply
13.4.8 Error 8 (UE-1): Undervoltage during Run
Possible reason
Solution
Power failure during running
Check input power supply
Main circuit capacitor deterioration
Contact with service
13.4.9 Error 9 (SC): Surge Current or Short Circuit
Possible reason
Solution
External phase-phase short circuit of motor
Check motor wiring
Earth surge
Remove the short circuit and check motor
Internal error of power module
Contact with service
Surge current
Increase the acceleration time (E0.26), reduce
the overexcitation braking factor (E0.55)
13.4.10 Error 10 (IPH.L): Input Phase Loss
Possible reason
Solution
Abnormal, omitted or broken connections
of frequency converter power supply
Check power supply connections, remove omitted
or broken connections
Broken fuse
Check fuse
Imbalance in the three phases of input
power supply
Check if the imbalance situation exceeds convert-
er withstand capability
Main circuit capacitor deterioration
Contact with service
13.4.11 Error 11 (OPH.L): Output Phase Loss
Possible reason
Solution
Abnormal, omitted or broken connections
of frequency converter outputs
Check the connections of frequency converter out-
puts, remove omitted or broken connections
Imbalance in the three phases of outputs
Check motor
Bosch Rexroth AG
Diagnosis
VFC 3210
178/253
DOK-RCON04-VFC3210****-IT01-EN-P