Alpha 6000 - Motor Fault and Corrective Measure

Chapter6 Troubleshooting
170
Table 6-3 Motor fault and corrective measure
Fault Content of checking Corrective measure
The motor
doesn’t work
Whether the power supply
connect to terminals R, S, T.
Whether charge LED lit
●Turn on the current
●Cut the current and then turn
on again
●Check voltage of power
supply
●Be sure the bolts fasten
terminals firmly
Use a rectifying voltmeter to
test whether the voltage of
terminals U, V, W is correct
●Cut the current and then turn
on again
Whether the motor is locked
for over loading
●Reduce the load and remove
the lock
Is there any fault code
displayed on the keyboard?
Is indicator TRIP flashing?
●Fault code referred in Table
6-1
Is there any running command
●Check whether operating
terminal connection and
connection between 24V and
PLC are firm
Whether prohibit reverse
operation setting is according
with running direction.
●Set reverse operation enable
or change the direction order
of motor
Whether terminals operating
signal cut first and then close
after fault.
●Cut terminals operating
signal first and then close
Whether frequency reference
voltage has been given by
analog input
●Check frequency reference
voltage
Whether the setting of run
command mode selection is
correct
●Select correct mode
Motor’s
rotation
direction is
contrary
Whether the connection of
terminals U, V, W is correct
●Switch the motor’s
connection of terminals U, V,
W
●Adjust parameter value of
P2.25
Motor rotate but
can’t shift
Whether the connection of
frequency circuit is correct
●Correct the connection
Whether the load is too heavy
●Reduce the load or increase
Acc/Dec time