Running The Motor Smoothly; Using The Soft Start Function; Sfsacc; Sfsdec - YASKAWA SGM series User Manual

3.5

Running the Motor Smoothly

This section explains how to run the servomotor smoothly.
3.5.1
3.5.2
3.5.3
3.5.4
3.5.5

3.5.1 Using the Soft Start Function

1) The soft start function adjusts progressive speed reference input inside the Servopack so
that acceleration and deceleration can be as constant as possible. To use this function,
set the following user constants.
SGDA- S
Speed/Torque
Cn-07
Cn-23
In the Servopack, a speed reference is multiplied
by the acceleration or deceleration value set in
Cn-07 or Cn-23 to provide speed control.
Smooth speed control can be achieved when pro-
gressive speed references are input or when con-
tact input speed control is used.
Set these user constants as follows.
Cn-07: Time interval from the time the motor starts until the maximum speed (4500
Cn-23: Time interval from the time the motor is running at the maximum speed (4500
Using the Soft Start Function

Using the Smoothing Function

Adjusting Gain

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjusting Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting the Torque Reference Filter Time Constant

SFSACC

Soft Start Time (Acceleration)

SFSDEC

Soft Start Time (Deceleration)
r/min) is reached
r/min) until it stops
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . .
Unit: Setting Factory
ms Range: Setting:
0 to 0
10000
Unit: Setting Factory
ms Range: Setting:
0 to 0
10000
Speed
reference
SGDA
Servopack
internal speed
reference
3.5 Running the Motor Smoothly
111
112
112
113
113
For Speed/Torque
Control Only
For Speed/Torque
Control Only
Soft start
Cn-07: Set this time interval.
Cn-23: Set this time interval.
111
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