Chapter 7 Detailed Function Introduction
Shenzhen Hpmont Technology Co., Ltd.
-32-
HD09 Series User Manual V1.1
7.5
F04: Process PID Controlling Parameter
Process PID control is commonly used to measure site pressure, liquid level and temperature and such
as physicals.
AI Max. analogue input or DI4 Max. input impulse frequency (F16.17) is corresponding to Max. output
frequency (F00.06).
Process is shown as below diagram:
Ref. Code
Function Description
Setting Range [Default]
F04.00
Process PID function selection
0,1 [0]
0: PID control invalid.
1: PID control valid.
F04.02
Feedback access selection
0,1 [0]
0: Analogue feedback. Feedback via terminal AI (F16.01 = 5).
1: Terminal impulse feedbac. Feedback via DI4 terminal (F15.03 = 53).
F04.03
Given Ref. Code digital setting
0 - 100.0 [0.0%]
F04.04
Proportional gain (P)
0.00 - 10.00 [2.00]
F04.05
Integral time (I)
0.01 - 10.00 [1.00s]
F04.06
Integral upper limit
0.0 - Max. frequency [50.0Hz]
F04.07
Derivative time (D)
0.00 - 10.00 [0.00s]
F04.08
Differential limiting values
0.0 - Max. frequency [20.0Hz]
F04.09
Sampling period (T)
0.01 - 50.00 [0.10s]
F04.03 define PID regulator preset.
F04.04, F04.05, F04.07 define process PID parameter.
F04.08 define proces PID differential terms up limit.
F04.09 define sampling period for feedback quantit. PID regulator will work one time during each period.
•
F04.07 = 0, differential items invalid.
Closed loop
adjustment
characteristic
PID
Limit
control
Output
filter
+
-
Error <
deviation limit
Pre-given value
Feedback value
N
Y
No process PID
adjustment
Output
Keep last time result of PID adjustment