Error
code Error name Possible reason
Solution
OC-2
Overcurrent during acceleration
The acceleration time is too
short
Increase the acceleration time
Too large start frequency
Reduce the start frequency
Too large load rotation iner‐
tia, too large impact load
Increase the acceleration time, re‐
duce sudden load change
Running command applied
while motor is coasting
Restart after motor stop, or start
with tracing speed ([b1.30]=2)
Improper V/F curve setting
Adjust V/F curve
Motor power and frequency
converter power do not
match
Motor power has to match with
frequency converter power
Excessive torque compensa‐
tion
● Check the amount of voltage
boost
● Reduce the amount of voltage
boost until the current be‐
comes less
Improper motor parameter
setting
Set correct motor parameters
OC-3
Overcurrent during
deceleration
The deceleration time is too
short
Increase the deceleration time
Too large load rotation inertia Use suitable brake component
Motor power and frequency
converter power do not
match
Motor power has to match with
frequency converter power
Over excitation
Reduce [b1.45]
Improper motor parameter
setting
Set correct motor parameters
OE-1
Overvoltage at constant speed
Surge voltage from the power
supply
Check the input power supply
Motor to earth short circuit
causes DC bus capacitors to
be overcharged
Check the motor connection
Too large load rotation inertia Use suitable brake component
Noise interference
Check the wiring of control circuit,
main circuit and ground
DOK-RCON03-EFC-3600***-IT01-EN-P
Rexroth Frequency Converter EFC 3600
Bosch Rexroth AG
Diagnosis
129/235
Summary of Contents for Rexroth EFC 3600
Page 6: ...Bosch Rexroth AG DOK RCON03 EFC 3600 IT01 EN P Rexroth Frequency Converter EFC 3600 IV 235 ...
Page 232: ...230 235 ...
Page 236: ...Bosch Rexroth AG DOK RCON03 EFC 3600 IT01 EN P Rexroth Frequency Converter EFC 3600 234 235 ...
Page 237: ...Notes DOK RCON03 EFC 3600 IT01 EN P Rexroth Frequency Converter EFC 3600 Bosch Rexroth AG ...