Description of Fault Codes
‑67‑
Cause
Confirming Method
Solution
1.During STune operation,
the gain drops to the lower
limit, stiffness <= 10.
Check if vibration resonance
is properly suppressed in the
system. The torque vibration
amplitude exceeds the
setpoint of H09.11.
Set the notch manually
when vibration cannot be
suppressed automatically.
Modify the electronic gear
ratio to improve the
command resolution, or
increase the command filter
time constant in the
"Parameter configuration"
interface. Check the
machine for cyclic
fluctuation.
Check whether resonance
that occurred during ITune
operation cannot be
suppressed.
Check whether there is
abnormal noise or torque
fluctuation during
operation.
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
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