Bosch Rexroth EFC 3600 Operating Instructions Manual page 131

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