7.4 Restore Parameters to Factory Defaults
If the frequency converter fails to run the motor due to incorrect parameter set-
tings, a simple solution is to initialize the parameters to factory defaults. Setting
[b0.05]=1 will start initialization.
Please be sure that the parameter settings match with the motor and the field
applications after factory defaults restore. Adjust the parameter settings after
factory defaults restore if necessary.
Running frequency Set by the potentiometer (b1.00)
Acceleration/Deceleration time Linear, Acc. for 5s / Dec. for 5s (b1.20, b1.21)
Protection mode in case of motor over-
load or overheat
Motor rated current (S2.04), thermal motor time constant
(S2.23), low speed derating frequency (E4.04), and zero
speed load (E4.05)
Operating panel operation
Run, Stop keys as commands, potentiometer as frequency
setting source
V/F curve mode Linear
Tab. 7-3: Parameter settings by factory defaults
7.5 Solutions for Simple Errors during Commissioning
Simple errors Solutions
Over current (OC-1 or OC-2) occurs
during acceleration
Increase the acceleration time
Over voltage (OE-3) occurs during de-
celeration
Increase the deceleration time
Over current (SC, OC-1 or OC-2) occurs
immediately after pressing the Run key
Incorrect wiring. Check if U, V, W outputs of the main circuit
are shorted or grounded
The motor runs in the direction opposite
to expected
Change the sequence of any two phases of U, V and W
The motor vibrates and runs in uncer-
tain directions after each starting
One phase of U, V and W is disconnected (output phase loss)
Tab. 7-4: Solutions for simple errors during commissioning
EFC 3600 Bosch Rexroth AG
Commissioning
DOK-RCON03-EFC-3600***-IT03-EN-P
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