Delta Electronics AC Motor Drive VFD-E User Manual
Page 185
Chapter 4 Parameters|
4-132
Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11
Group 10: PID Control
10.00
PID Set Point Selection
Factory Setting: 0
Settings
0
Disable
1
Digital keypad UP/DOWN keys
2
AVI 0 ~ +10VDC
3
ACI 4 ~ 20mA / AVI2 0 ~ +10VDC
4
PID set point (Pr.10.11)
10.01
Input Terminal for PID Feedback
Factory Setting: 0
Settings
0
Positive PID feedback from external terminal AVI (0 ~ +10VDC).
1
Negative PID feedback from external terminal AVI (0 ~ +10VDC).
2
Positive PID feedback from external terminal ACI (4 ~ 20mA)/ AVI2
(0 ~ +10VDC).
3
Negative PID feedback from external terminal ACI (4 ~ 20mA)/
AVI2 (0 ~ +10VDC).
Note that the measured variable (feedback) controls the output frequency (Hz). Select input
terminal accordingly. Make sure this parameter setting does not conflict with the setting for
Pr.10.00 (Master Frequency).
When Pr.10.00 is set to 2 or 3, the set point (Master Frequency) for PID control is obtained
from the AVI or ACI/AVI2 external terminal (0 to +10V or 4-20mA) or from multi-step speed.
When Pr.10.00 is set to 1, the set point is obtained from the keypad.
Negative
feedback
means:
+target value – feedback
Positive feedback means: -target value + feedback.
10.02
Proportional Gain (P)
Unit: 0. 1
Settings
0.0 to 10.0
Factory Setting: 1.0
This parameter specifies proportional control and associated gain (P). If the other two gains (I
and D) are set to zero, proportional control is the only one effective. With 10% deviation (error)
and P=1, the output will be P x10% x Master Frequency.