YASKAWA E-V Series User Manual page 125

5 Adjustments
5.3.2 Advanced Autotuning Procedure
(3) Errors during Calculation of Mass Ratio
The following table shows the probable causes of errors that may occur during the calculation of the mass
ratio with the Jcalc set to ON, along with corrective actions for the errors.
Error
Display
Err1
Err2
Err3
Err4
Err5
5-22
Error Type
Failure in start- The SERVOPACK started calculat-
ing calculation of ing the mass ratio, but the calculation
mass ratio was not completed.
Failure in calcula- The mass ratio fluctuated greatly and
tion of mass ratio did not converge within 10 tries.
Low-frequency Low-frequency vibration was
vibration error detected.
Force limit error The force limit was reached.
While calculating the mass ratio, the
Proportional con-
speed control was set to proportional
trol error
control with P-CON input.
Cause
• Increase the speed loop gain (Pn100).
• Increase the STROKE (travel distance).
Set the calculation value based on the
machine specifications in Pn103 and execute
the calculation with the Jcalc set to OFF.
Double the calculation starting level of the
mass ratio (Pn324).
• Increase the force limit value.
• Double the calculation starting level of the
mass ratio (Pn324).
Operate the SERVOPACK with PI control
while calculating the mass ratio.
Corrective Action