Inovance IS650P Series - During Running Issues

5 Troubleshooting
5
- 40 -
During Startup Fault Symptom Cause Conrming Methods
Input torque
reference
Servo motor does
not rotate.
Internal torque
reference (H0B-02)
is 0.
AI wiring is incorrect.
When AI is selected to input torque reference,
check whether polarity of input signal is reverse.
Selection of torque reference is incorrect.
Check whether H07-02 (torque reference source)
is set correctly.
Torque reference is not input.
1. When AI is selected to input torque reference,
check whether AI related parameters in group
H03 are set correctly rst. Then check whether
input voltage is correct by observing voltage on
oscilloscope or reading the value of H0B-21 or
H0B-22.
2. When digital setting is used to set torque
reference, check whether H07-03 (keypad setting
value of torque reference) is set correctly.
3. When serial comms. is used to set torque
reference, check whether H31-11 (torque reference
set via communication is set correctly.
Servo motor
rotates in reverse
direction.
Internal torque
reference (H0B-02)
is negative.
1. When AI is selected to input torque reference,
check whether polarity of external voltage input
signal is reverse. You can conrm it by using an
oscilloscope or viewing H0B-21 or H0B-22.
2. When digital setting is used to set torque
reference, check whether H07-03 (keypad setting
value of torque reference) is smaller than 0.
3. When serial comms. is used to set torque
reference, check whether H31-11 (torque reference
set via communication) is smaller than 0.
4. Check whether DI function FunIN.25: ToqDirSel
(torque reference direction) has been allocated
and whether logic of corresponding DI is valid.
5. Check whether H02-02 (rotation direction
selection) is set correctly.
Servo motor can rotate after preceding fault is removed.
Servo motor
jitters at low
speed.
Motor speed is not
steady.
The gain is set
unreasonably.
Perform automatic gain tuning.
Motor shaft
vibrates left and
right.
The load inertia ratio
(H08-15) is too large.
If servo motor can run safely, perform inertia auto-
tuning and perform automatic gain tuning.