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Chapter 6 Parameter Description
86
Display of operation panel
Unit place
Multifunctional input terminal Xi
0: Current through Xi is valid;
1: No current through Xi is invalid
Tens place
Multifunctional output terminal Y1
0: Current through Y1 is valid;
1: No current through Y1 is invalid
Hundreds
place
Relay output terminal
0: Enable in magnetizing status;
1: Enable in no magnetizing status
When the digital input Xi terminal and COM terminal are short circuited, it may judge whether the input
status is valid by whether there is current flowing in the terminals.
When the digital output Y1 terminal acts as open collector output, it may judge whether the output status
is valid by whether there is current flowing in the terminal.
It may judge whether the output status is valid by whether the relay terminal is in the
magnetizing
status.
6.9 Process PID Close Loop Parameters (Group P8)
Deviation Limit
P8.07
PID Adjustment
Selection
P8.08
Proportional Gain
P8.03 Kp×
ε
Integral Gain P8.04
Σ
Ki×
ε
Differential Gain
P8.05
Kd×(
ε
-
ε′
)
Close
Loop
output
Close
Loop
Feedback
Sampling Cycle
P8.06
Close Loop
Feedback Value
+
-
ε
+
+
+
ε
´refers to the previous deviation,
ε
refers to the deviation this time
Analog
Feedback
close Loop
AI1
AI2
AI3
DI
Set P8.02
andP5.06=47
Single Pulse
Feedback
close Loop
Analog
feedback
close Loop
P8.00
P4.15
～
P4.21
AI1
AI2
AI3
DI
P8.01
Single-
phase pulse
feedback
close loop
Set P1.02
～
P1.04
Set P1.05
～
P1.07
Fig. 6
−
31 Schematic diagram for PID
The current control operation mode P0.03 shall be determined before determining the process close loop
reference value.
When the current control operation mode is analog feedback process close loop (P0.03=1), if P1.02 is
set to “0”, it may determine the reference value of the close loop by P8.00. If P1.02 is non
−
zero value, it
determine the reference value of the close loop by the analog value selected in P1.02.
As shown in Fig.6
−
31 PID Schematic Diagram, the higher the Kp value is, the faster the response is, but
if the Kp value is too high, it may easily generate oscillation and the deviation cannot be eliminated
P8.00
Analog feedback process close loop control digital voltage
reference
0.00~10.00 V(0.00V)
P8.03
Proportional gain Kp
0.000 ~ 10.000(0.200)
P8.04
Integral gain Ki
0.000 ~ 10.000(0.500)
P8.05
Differential gain Kd
0.000 ~ 10.000(0.000)
