Product specifications
Chapter 7 Troubleshooting
HA-680_V04
- 117 -
Unstable rotation in speed and torque control
Is the power
supply voltage
normal?
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Apply the proper
voltage.
N
Is the power
supply voltage
fluctuation within
its allowance?
Check the power
capacity,
input capacity, etc.
Y
N
Y
Start
Is the
temperature in
the panel
normal?
Examine the heating elements in panel,
and consider the cooling system.
N
Y
N
Is voltage of
driver’s UVW
correct?
N
Is phase order
correct
between motor
and driver?
Y
Y
Actuator failure
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Y
Is phase order
correct
between motor
and driver?
Y
Motor rare short
circuited? Is the
motor grounded?
N
Is the actuator
shaft locked?
N
Y
Y
N
Correct the phase order
between them.
Actuator failure
Unlock the actuator
shaft.
Are motor wire
connection
screws loose? Is
the motor wire
disconnected?
Y
Check motor cable
connection.
Actuator failure
Correct the phase order
between them.
Driver failure
N