Delta VFD-E Series, Руководство пользователя

Страница: 210 / 435

Chapter 4 Parameters 
4-155
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).
 When Pr.10.00=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=1, the set point is obtained from the keypad.
 When Pr.10.01=1 or 3 (Negative feedback): Fault (Err) = setpoint (SP) – feedback(FB). When
the feedback will be increased by the increasing output frequency, please use this setting.
 When Pr.10.01= to 0 or 2 (Positive feedback): Fault (Err) =feedback(FB)- setpoint(SP) When
the feedback will be decreased by the increasing output frequency, please use this setting.
 Select input terminal accordingly. Make sure this parameter setting does not conflict with the
setting for Pr.10.00 (Master Frequency).

Related parameters: Pr.00.04 Content of Multi-function Display (set to 5 Display PID analog
feedback signal value (b) (%)), Pr. 10.11(Source of PID Set point) and Pr.04.19(ACI/AVI2
Selection)
10.11 
Source of PID Set point Unit: Hz
Settings 0.00 to 599.00Hz
Factory Setting: 0.00
 This parameter is used in conjunction with Pr.10.00 set 4 to input a set point in Hz.
10.02

Proportional Gain (P)
Settings 0.0 to 10.0 Factory Setting: 1.0
 It is used to eliminate the system fault. It is usually used to decrease the fault and get the
faster response speed. But if setting too large value in Pr.10.02, it may cause the system
oscillation and instability.