Instruction manual

9. TROUBLESHOOTING
Dis la
pulse frequency
error
i. 37 Parameter
I
Definition
nput pulse
requency of the
ommand pulse is
00 high.
~~ ~
'arameter setting i:
vrong.
aad exceeded
'verload protection
haracteristic
of
ervo amplifier.
aad ratio
200%:
~~
86s or more
Cause Action
1. Pulse frequency of the command
Change the command pulse frequency to
:
pulse is too high.
proper value.
2, Noise entered command pulses.
Jarameter setting
to be rewritten.
Change the servo amplifier. servo amplifier fault caused the
Change the command device.
3. Command device failure
Take action against noise.
1. Reduce load. 1. Servo amplifier is used in excess
of its continuous output current. 2. Review operation pattern.
3. Use servo motor that provides large
output.
2. Servo system is instable and
1. Repeat acceleration/
hunting.
deceleration
to execute auto tunmg.
2. Change auto tuning response setting.
3. Set auto tuning to OFF and make gail
adjustment manually.
3. Machine struck something.
1. Review operation pattern.
2. Install limit switches.
i. Wrong connection of servo motor. Connect correctly.
Servo amplfier's output terminals
U, V, W do not match servo
motor's input terminals
U, V, W.
5. Encoder faulty.
I-' Chechg method
Change the servo motor.
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
slaps or
returns midway, the
encoder
is faulty.
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