YASKAWA SGDV - Soft Start

5.3 Operating Using Speed Control with Analog Voltage Reference
5-25
5
Operation
5.3.3 Soft Start
The soft start is a function to convert stepped speed reference input into constant acceleration and decelera-
tion. The time can be set for acceleration and deceleration.
Use this function to smooth speed control in speed control (including selection of internal set speeds).
Note: Set both parameters Pn305 and Pn306 to "0" (factory setting) for normal speed control.
Pn305: The time interval from the time the motor starts until the motor maximum speed is reached.
Pn306: The time interval from the time the motor is operating at the motor maximum speed until it stops.
4
Turn ON the servo ON (/S-ON) signal from the host con-
troller. The display shown on the left appears.
5
Press the DATA/SHIFT Key for approximately one second.
The offset amount is displayed.
6
(Example)
Press the UP or the DOWN Key to stop the motor rotation.
The value is the amount of offset.
7
Press the MODE/SET Key. After "donE" blinks, the display
shown on the left appears.
8
Press the DATA/SHIFT Key for approximately one second.
"Fn00A" is displayed again.
Step
Display after
Operation
Keys Description
MODE
/
SET DATA
/
MODE
/
SET DATA
/
MODE / SET DATA /
MODE
/
SET DATA
/
Pn305
Soft Start Acceleration Time
Classification
Setting Range Setting Unit Factory Setting When Enabled
0 to 10000 1 ms 0 Immediately Setup
Pn306
Soft Start Deceleration Time
Classification
Setting Range Setting Unit Factory Setting When Enabled
0 to 10000 1 ms 0 Immediately Setup
Speed
Speed
Pn305 Pn306
After soft start
Maximum speed of Servomotor
Before soft start