Inovance IS620P Series - Page 145

Chapter 6 Troubleshooting IS620P User Manual
- 144 -
Cause Conrming Method Possible Solution
3. The Z signal of
the encoder suffers
interference
•
Check the on-site wiring condition:
Check whether there is large-sized
equipment generating interference
around the servo system or whether
there are several variable-frequency
power devices inside the cabinet.
•
Make the servo drive in the "Rdy"
state and rotate the motor shaft
counterclockwise (CCW) manually and
observer whether H0B-10 (rotation
angle/electrical angle) increases/
decreases smoothly. For the Z series
motor, turning one circle corresponds
to ve 0-360°. For the X series motor,
turning one circle corresponds to four
0-360°.
If H0B-10 changes abnormally during
rotation, it indicates that a fault occurs
on the encoder.
If no fault is reported during rotation
but the fault is report during servo
running, it is extremely possible that
interference exists.
•
Prefer to use the cable
congured by Inovance as
standard.
•
If non-standard cable
is used, check whether
the cable meets the
requirements and is STP
cable.
•
Separate the power cables
and control cables. Never
bundle the motor cables
and encoder cables
together. The grounding
terminal of the servo drive
and motor must be in good
contact.
•
Check the encoder
connector at both ends
is in good contact and
whether any pin retracts.
4. The encoder is faulty.
•
Replace it with a normal encoder
cable. If the fault no longer occurs
after replacement, it indicates that the
original encoder is damaged.
•
Place the motor on the same position,
power on the system several times and
observe the change of H0B-10. The
electrical angle must be within ±30°.
•
Replace with a normal
encoder cable.
•
If not, it indicates that the
encoder is damaged. You
need to replace the servo
motor.