Yaskawa MP900 Series Ladder Programming Manual - Manual (Page 249)

5.8 DDC Instructions
5.8.11 Linear Accelerator/Decelerator 1 (LAU)
5-180
( 3 ) Programming Example
In the following programming example, the LAU instruction for real numbers is executed with the specified accelera-
tion and deceleration rates where MF00000 is the input speed and MF00002 is the output speed.
The following parameters are set with an EXPRESSION instruction to create the acceleration or deceleration rate.
• 100% level of acceleration/deceleration rate input = 20,000
• Acceleration time = 2.5 s
• Deceleration time = 3.5 s
• Quick stop time = 0.5 s
The following figure shows how each register operates.
∗ 1. The acceleration time is applied when moving away from 0, and the deceleration time is applied when moving
toward 0.
∗ 2. The quick stop time is also applied as the acceleration time.
MB00100
(Quick stop bit OFF)
MF00000
(Input speed)
ON
OFF
0
20,000
MF00002
(Output speed)
0
20,000
3.5 s
(BT)
0.5 s *2
(QT)
-10,000
-10,000
2.5 s
(AT)
1.25 s *1
(AT/2)
1.75 s *1
(BT/2)
0.5 s
(QT)
(Quick stop time is applied.) (Acceleration time and deceleration time settings are applied.)