- 178 -
Fault
Code
Name Possible Causes Solution Level
Err04
Overcurrent at
constant speed
•
The main circuit output
is grounded or short
circuited.
•
Motor auto-tuning is
performed properly.
•
The load is too heavy.
•
The encoder is seriously
interfered with.
•
Check:
־ Whether encoder pulses
per revolution (PPR) is set
correctly
־ Whether the encoder signal is
interfered with
־ Whether the encoder cable
runs through the duct
independently
־ Whether the cable is too long
־ Whether the shield is
grounded at one end
•
Check:
־ Whether the encoder is
installed reliably
־ Whether the rotating shaft is
connected to the motor shaft
reliably
־ Whether the encoder is stable
during normal-speed running
•
Check whether UPS feedback
is valid in the non-UPS running
state (Err02).
•
Check whether the
acceleration/deceleration rate
is too high (Err02, Err03).
(End)
5A
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