Chapter 9 Troubleshooting
The communication cable
is wired incorrectly or
unreliably connected,
disconnected, etc.
Check whether the
communication cable is
correct and reliable.
Reconnect the communication
cable, or replace the communication
cable.
Improper setting of fault
parameters.
Check whether the
P15.02 setting is too
short.
The host device does not
work.
Confirm the host system
signal
Check whether the host device is
working.
Current detection
circuit abnormal
The wirings or the plug-in
units of the control board
loosens.
Check whether the
control board cables and
plug-in units are loose
The AI analog input
voltage is too high.
Check whether the AI
analog voltage input is
above 12V
The parameters of the
motor are incorrect.
Confirm the motor
nameplate parameters
Re-enter the correct motor
parameters.
When reverse running is
prohibited, reverse
rotating auto-tuning is
performed.
Confirm whether it is set
to prohibit reverse
function.
Cancel the reverse running
prohibition
Confirm that the UVW power cable
is connected properly and the
phase sequence is correct.
Enter the correct encoder
parameters.
Undervoltage
during main
circuit operation
Measure whether the grid
voltage is abnormal
The load is too large or
the motor does not match
the drive
Confirm the load
matching conditions
Select the appropriate drive and
motor.
The control mode
parameter setting
is incorrect
Parameter identification
is performed in non-VC
control mode.
Confirm the setting of the
control mode in the
parameter.
Confirm the control mode
parameters.