Inovance SV670N Series - Page 71

Description of Fault Codes
‑70‑
Cause
Confirming Method
Solution
During ETune operation, the
gain drops to the lower limit:
Position loop gain < 5.
Speed loop gain < 5.
Model loop gain < 10.
Check if vibration resonance
is properly suppressed in the
system. The torque vibration
amplitude exceeds the
setpoint of H09.11.
1. Set the notch manually.
2. Modify the electronic gear
ratio to improve the
command resolution,
increase the command
filter time constant in the
parameter configuration
interface.
3. Check whether the
machine suffers from
periodic fluctuation.
4. Set H09.58 to 1 to clear
resonance suppression
parameters, and perform
STune again.
● E662.0: ETune failure
Cause
Confirming Method
Solution
Check whether resonance
that occurred during ETune
operation cannot be
suppressed.
Check whether there is
abnormal noise or torque
fluctuation during
operation.
1. Set the notch manually
when vibration cannot be
suppressed
automatically.
2. Modify the electronic gear
ratio to improve the
command resolution,
increase the command
filter time constant or in
the parameter
configuration interface.
3. Increase the value of
H09.11 as appropriate.
4. Check whether the
machine suffers from
periodic fluctuation.
5. Check whether the
positioning threshold is
too low. Increase the
reference acceleration/
deceleration time.
● E663.0: ITune error