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Bosch Rexroth EFC 3600 Operating Instructions Manual page 132

Frequency converter
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Bosch Rexroth AG
Diagnosis
Error
Error name Possible reason
code
OE-2
OE-3
130/235
Surge voltage from the power
supply
Motor to earth short circuit
causes DC bus capacitors to
be overcharged
Direct start during motor run‐
ning
Too short acceleration time
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
Too short deceleration time
Incorrect wiring of brake re‐
sistor
The brake chopper is dam‐
aged
DOK-RCON03-EFC-3600***-IT01-EN-P
Rexroth Frequency Converter EFC 3600
Solution
Check the input power supply
Check the motor connection
Restart after motor stop, or start
with tracing speed ([b1.30])
Increase the acceleration time
([b1.20]) or use S-curve
([b1.22]~[b1.24])
Check the input power supply
Check the motor connection
● Increase the deceleration time
([b1.21])
● Use a brake resistor or a dy‐
namic brake resistor unit
● Enable stall overvoltage pre‐
vention during deceleration
([E4.01]=1)
Check the wiring according to the
manual
Replace the frequency converter
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