Omron R88D-GT series User Manual page 460

8-3 Troubleshooting
Alarm
code
Encoder
23 communications data
error
8
Deviation counter
24
overflow
8-11
Error Status when error occurs
Occurs when the power
supply is turned ON or
during operation.
Occurs when the Servo-
motor does not rotate
even when command
pulses are input.
Occurs during
high-speed rotation.
Occurs when a long
string of command
pulses is given.
Occurs during operation.
Cause
• The encoder signal • Correct the wiring.
wiring is incorrect.
• Noise on the encoder • Take measures
wiring causes
incorrect operation.
• The power supply • Provide the required
voltage for the
encoder has dropped
(especially when the
cable is long.)
• The Servomotor • Correct the wiring.
power wiring or the
encoder wiring is
incorrect.
• The Servomotor is • If the Servomotor
mechanically being
held.
• Release the electro-
• Control PCB error. • Replace the Servo
• The Servomotor • Correct the wiring.
power wiring or the
encoder wiring is
incorrect.
• Gain adjustment is • Adjust the gain.
insufficient.
• The acceleration and • Extend the accelera-
deceleration rapid.
• The load is too large. • Reduce the load.
• Select a suitable
• The setting for the • Increase the setting of
Deviation Counter
• Reduce the rotation
Overflow Level (Pn70)
was exceeded.
• Lighten the load.
• Extend the accelera-
Countermeasure
against noise on the
encoder wiring.
encoder power supply
voltage (5 VDC±5%).
shaft is held by
external force, release
it.
magnetic brake.
Drive.
tion and deceleration
times.
Servomotor.
Pn70.
speed.
tion and deceleration
times.