Improvement Of Linear Motor Related Specifications - YASKAWA SGMAH User Manual

Sigma II User's Manual Chapter 5: Parameter Settings and Functions

5.11.3 Improvement of Linear Motor Related Specifications

Additional Function: Parameter for Max. Speed for Linear Motors
The maximum speed can be set in the parameter.
This function can be used for the system where the servomotor speed does not reach
its maximum. Decreasing the maximum speed in Pn384 can increase the resolution
of speed control.
Related Parameter
Parameter Setting
Name Unit Factory Setting
No. Range
Pn384 Maximum speed for linear motors 100 mm/s 1 to 100 50
The setting of Pn384 must not be higher than the maximum speed of motor
parameter.
If a speed higher than the maximum speed of motor parameter is set, the alarm A.55
"Maximum speed setting alarm" occurs.
To change the maximum speed in Pn384, set also the PG dividing ratio using the
following functions.
Calculation of speed for linear motors and PG dividing ratio
The allowable maximum dividing ratio is calculated on the base of the set maximum
motor speed, or the allowable maximum speed is calculated on the base of the set
maximum dividing ratio.
The parameter whose setting is the base of calculation can be selected in the
parameter Pn080 "Allowable maximum motor speed/dividing ratio calculation
selection."
If a value higher than the maximum dividing ratio calculated on the base of the
motor maximum speed is set, the alarm A.09 "Dividing ratio setting error" occurs.
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