Product specifications

Chapter 7 Troubleshooting
HA-680_V04
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7-2 Troubleshooting for improper actuator motions
Troubleshooting procedures for problems other than alarms are described separately in the position
control, in the speed control and in the Torque control. They are also described for the following cases:
No rotation
Unstable rotation
Poor positioning accuracy
Note: In the flowcharts, "Y" and "N" represent "Yes" and "No", respectively.
7-2-1 Improper motions in position control
No rotation in position control
Start
LED of front
panel
indicating?
Are NFB and
MS on?
Power failure
NFB or MS failure
Wrong wiring
N N Y
Is AC/DC
Power off with
power on
sequence?
N
Driver failure
Y
N
N
Turn NFB and
MS ON.
Is an alarm
indicated?
Refer section 7-1:
alarm and
diagnostic tips.
Y
Y
Y
Note:
NFB: No-fuse breaker
MS: Main power switch
N
Is [parameter]
[17,18
:
current limit
]
correct?
Correct
[parameter]
[17, 18: current limit].
Y
N
N
N
Loose
screws in
connection,
broken wire?
Y
Y
N
Is voltage of
driver’s UVW
correct?
Y
N
Is phase order
correct
between motor
and driver?
Y
Y
Is command
configuration
correct?
N
Y
Next page.
Take care of safety while
rotating the actuator by
hand.
The control or
main circuit
power
OK?
Can actuator
be rotated by
hand (by using
arms)?
Tighten screws.
Replace motor cable.
Make same command
configuration as of host in
[25: Command pulse input
form] in [parameter].
Driver failure
Actuator failure
Correct the phase order
between them.
Turn NFB and
MS ON.
Is a command
pulse coming
in?
Input command pulse.