Diagnosis On Errors - Bosch Rexroth EFC 3600 Operating Instructions Manual

Bosch Rexroth AG
Diagnosis
9.5

Diagnosis on Errors

9.5.1 Error Description and Solution
When EFC 3600 detects a status or situation that affects or prevents correct operation,
an error message will be generated, as shown below:
Error
Error name Possible reason
code
OC-1
128/235
Sudden change in run mode
Low mains voltage
Motor power and frequency
converter power do not
match
Too large inertia or load
The motor cable is too long
Excessive torque compensa‐
tion
DOK-RCON03-EFC-3600***-IT01-EN-P
Rexroth Frequency Converter EFC 3600
Solution
Reduce occurrence and scale of
sudden change
Check the input power supply
Motor power has to match with
frequency converter power
Check motor power, converter
power, load
● Decrease the carrier frequency
● Select a larger frequency con‐
verter
● Check the amount of voltage
boost
● Reduce the amount of voltage
boost until the current be‐
comes less