Fault Diagnosis and Countermeasures MD280/MD280N User Manual
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Deceleration over current
No
Yes
No
No
No
Yes
Yes
Yes
No
Err03
Check if the output loop of the
inverter is earthed or short circuited
If the deceleration time is too short
If the voltage is too low
If load is added suddenly
during the deceleration
If the brake unit and brake
resistor are installed
Ask for technical
support
Yes
Perform troubleshooting
Prolong the deceleration
time
Adjust the voltage to
normal range
Remove the additional
load
Install the brake unit and
brake resistor
Fig.8-2 Deceleration over current (ERR03)
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