Delta VFD5A5ME43ANNAA User Manual

Chapter 12 Description of Parameter SettingsME300
12.1-08-3

AVI analog input Pr.03-00 = 5, PID feedback signal.

Pr.08-01–08-03 is set according to actual conditions.
If there is no vibration in the system, increase Pr.08-01 (Proportional Gain (P))
If there is no vibration in the system, decrease Pr.08-02 (Integral Time (I))
If there is no vibration in the system, increase Pr.08-03 (Differential Time (D))

Refer to Pr.08-00–08-21 for PID parameter settings.


Proportional Gain (P)
Default: 1.00
Settings
0.0
–500.0 (When Pr.08-23 bit1 = 0)
0.00
–500.00 (When Pr.08-23 bit1 = 1)
 1.0: Kp gain is 100%; if the setting is 0.5, Kp gain is 50%.
 Eliminates the system error; usually used to decrease the error and get faster response speed. If
you set the value too high, it may cause system oscillation and instability.
 If you set the other two gains (I and D) to zero, proportional control is the only effective
parameter.

Integral Time (I)
Default: 1.00
Settings 0.00–100.00 sec.
 Use the integral controller to eliminate the error during stable system operation. The integral
control does not stop working until the error is zero. The integral is affected by the integral time.
The smaller the integral time, the stronger the integral action. It is helpful to reduce overshoot
and oscillation for a stable system. Accordingly, the speed to lower the steady-state error
decreases. The integral control is often used with the other two controls for the PI controller or
PID controller.
 Sets the integral time of the I controller. When the integral time is long, there is a small I controller
gain, with slower response and slow external control. When the integral time is short, there is a
large I controller gain, with faster response and rapid external control.
 When the integral time is too short, it may cause system oscillation.
 Set Integral Time to 0.00 to disable the parameter Pr.08-02.

Differential Time (D)
Default: 0.00
Settings 0.00–1.00 sec.
 Use the differential controller to show the system error change, as well as to preview the change
in the error. You can use the differential controller to eliminate the error in order to improve the
system state. Using a suitable differential time can reduce overshoot and shorten adjustment
time; however, the differential operation increases noise interference. Note that a too large
differential causes more noise interference. In addition, the differential shows the change and the
differential output is 0 when there is no change. Note that you cannot use the differential control
independently. You must use it with the other two controllers to for the PD controller or PID
controller.

Delta VFD5A5ME43ANNAA Specifications

General

Brand	Delta
Model	VFD5A5ME43ANNAA
Category	DC Drives
Language	English