6. Description of Parameters
- 124 -
6
Ƶ
PID Reference
The PID (Propor In Derivative) function uses system feedback for closed-
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The purpose of PID control is to keep the drive output as close as possible to a desired
reference via PID adjustment.
Ɣ
Proportional gain (Kp1)
A large value tends to reduce present error, but too large setting will cause system
oscillation.
Ɣ
Integral time (Ti1)
The shorter the integral time is, the faster the error will be predicted. But too short
setting will cause overshoot or system oscillation.
Ɣ
Derivative time (Td1)
The longer the derivative time is, the faster the system will respond to the error. But
too longer setting will cause vibration.
Figure 6-22 Function block diagram of the PID control
)
*
*
1
1
(
Kp
S
Td
S
Ti
Motor
Machine
Sensor
PID function
+
-
Target
FA-00 = 0
)
*
*
1
1
(
Kp
S
Td
S
Ti
Motor
Machine
Sensor
PID function
+
-
Target
FA-00 = 1/2/3/4/5/6
Feedback
Feedback
FA-01
When
When
AI1
AI2
AI3
Pulse
reference (DI5)
Communication
setting
Summary of Contents for MD290 Series
Page 1: ......
Page 79: ...3 Electrical Installation 78 3 ...
Page 80: ...4 Operating Panel Keypad Display 4 1 Introduction 80 4 2 Inbuilt LED Operating Panel 80 ...
Page 92: ...5 Quick Setup 5 1 Get Familiar With Operating Panel 92 5 2 Setup Flowchart 93 ...
Page 227: ...7 Interfaces and Communication 226 7 ...
Page 285: ...10 Troubleshooting 284 11 ...
Page 349: ......
Page 350: ......