Chapter 6 Troubleshooting IS620P User Manual
- 116 -
During
Startup
Fault
Phenomenon
Cause Conîš¿rming Method
Input the
speed
reference.
The servo
motor does not
rotate or the
motor speed is
abnormal.
The speed
reference (H0B-
01) is 0.
•
The AI wiring is incorrect.
When the speed reference is input through AI,
check whether the AI input channel is selected
correctly and check whether the AI is wired
correctly by referring to Chapter 3 Wiring of
Servo System.
•
The speed reference selection is incorrect.
Check whether H06-02 (speed reference
selection) is set correctly.
•
The speed reference is not input or abnormal.
When AI is selected to input the speed
reference, check whether the AI related
parameters in group H03 are set correctly îš¿rst.
Then check whether the input voltage is correct
by observing the voltage on oscilloscope or
viewing the AI sampling voltage in H0B-21 or
H0B-22.
When digital setting is used to set the speed
reference, check whether H06-03 (keypad
setting value of speed reference) is set
correctly.
When multi-speed is used to set the speed
reference, check whether the parameters in
group H12 are set correctly.
When communication is used to set the speed
reference, check whether H31-09 (speed
reference set via communication) is set
correctly.
When jog speed reference is used to set the
speed reference, check whether H06-04 (jog
speed setting value) is set correctly, whether
the DI functions FunIN.18: JOGCMD+ (forward
jog) and FunIN.19: JOGCMD- (reverse jog)
have been allocated and whether the logic of
corresponding DIs is effective.
Check whether H06-05 (acceleration ramp
time constant of speed reference) and H06-
06 (deceleration ramp time constant of speed
reference) are set correctly.
Check whether the DI function FunIN.12:
ZCLAMP (zero clamp function) is misallocated
and whether the logic of corresponding DI is
effective.
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