Instruction manual
9.
TROUBLESHOOTING
Display
L.
51
-
L.
52
Name
herload
2
kror excessive
Definition
motor's input terminals
U,
V,
W.
;ervo motor locked:
U,
V,
W do not match servo
everal seconds.
Servo amplifier's output terminals
low successively for
Connect correctly.
2.
Wrong connection of servo motor.
lutput current
to
2.
Install limit switches.
he like caused max.
1.
Review operation pattern.
1.
Machine struck something.
vlachine collision or
Action
Cause
1s
or more
1.
Repeat acceleration/
3.
Servo system is instable and
hunting.
deceleration to execute auto tuning.
2.
Change auto tuning response setting.
3.
Set auto tuning
to
OFF
and make gair
adjustment manually.
4.
Encoder faulty.
Change the servo motor.
-
-
-
Iroop pulse value ofll.
Acceleration/deceleration
time
-
Checkmg
method
-
When
the
servo
motor
shaft
is
rotated
slowly
with
the
servo
off,
the
cumulative feedback
pulses
should
vary
in
proportion
to
the
rotary
angle.
If
the
indication
skips or
returns
midway, the
encoder
is
faulty.
I
IIncrease the
acceleration/deceleration
he deviatlon
No.28)
is
too
small.
IOk
pulses.
Increase the torque limit value.
2. Torque limit value (parameter
ounter exceeded
time constant.
constant is
too
small.
3.
Motor cannot
be
started due to
1.
Review the power supply capacity.
torque shortage caused
by
power
output.
supply voltage drop.
2. Use servo motor which provides large]
4.
Position control gain
1
(parameter
Increase set value and adjust to ensurc
No.6)
value is small.
proper operation.
5. Servo motor shaft was rotated
by
1.
When torque
1s
limited, increase thc
external force.
hmit value.
2. Reduce load.
3.
Use servo motor that provides large:
output.
6.
Machine struck something.
1.
Review operation pattern.
2.
Install limit switches.
7.
Encoder faulty
Connect correctly.
8.
Wrong connection of servo motor.
Change the servo motor.
Servo amplifier's output terminals
U,
V,
W
do not match servo
motor's input terminals
U,
Y,
W.
9-
10