Product specifications

Chapter 7 Troubleshooting
HA-680_V04
- 116 -
7-2-2 Improper motions in speed and torque control
No rotation in speed and torque control
Is the load
inertia proper?
Decrease the load
inertia.
N
Y
Previous page
Does gain
adjustment
succeed?
N
Y
Correct the gain
properly.
N
Does rattle or
resonance occur
i
n the mechanical
system?
Y
Improve the
mechanical system.
Replace the actuator
or driver.
Is the front
panel LED on?
Are NFB and
MS on?
Power failure
AC/DC Power failure
Wrong wiring
N N Y
Is AC/DC
Power off with
power on
sequence?
N
Driver failure
Y
Y
N
Turn NFB and MS,
AC/DC Power ON.
Is an alarm
indicated?
Refer to section 7-1:
“alarm and
diagnostic tips.”
Y
N
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
Loose
screws in
connection,
broken wire?
Y
Y
N
Y
Next page A.
Take care of safety while
rotating the actuator by
hand.
Is the power
normal?
Can actuator
be rotated by
hand (by using
arms)?
Tighten screws.
Replace motor cable.
Turn NFB and
MS ON.
Speed
command
coming?
Input it.
Next page B.
Start