Chapter IV Function Parameter Table
71
Parameter
Code
Parameter
name
Parameter detailed description
Minimum
Unit
Factory
value
Change
2: AI2;
3: Reserved
4: PULSE setting;
5: Communication setting
6: Multistage instruction setting
7: Keypad digital potentiometer input
8: Reserved
This function code determines the target
input channel of PID.
The set target of PID is a relative value,
and the set 100% corresponds to 100% of
the feedback signal of the controlled
system. The system always performs
calculation based on relative value (0
to 100.0%).
F8.02
Feedback
channel
selection
This function code is used to select the
PID feedback channel.
0: AI1;
1: AI2;
2: Reserved
3: Pulse
4: Communication setting
Note: The target input channel and the
feedback channel cannot be the same,
otherwise, the PID cannot be controlled
effectively.
1
0
×
F8.03
Target
value
channel
selection
Set range: 0
～
1000ms
The external target input signal and
feedback signal often overlap a certain
interference. The channel is filtered by
setting the filter time. The longer the filter
time, the stronger the anti-interference
ability, but the response becomes slower;
the faster the filter time, the faster the
response, but the anti-interference ability
weakens.
1ms
10ms
○
F8.04
Feedback
channel
filter
1ms
10ms
○
F8.05
Target
value
digital
setting
Universal drive mode setting range:
0.0
～
100.0%
Water supply drive mode setting range:
0.0
～
F8.23
0.1%
Or
0.1bar
0.0%
Or
0.0bar
○
F8.06
Proportion
al gain
Kp1
Set range: 0
～
1000
Determine the adjustment intensity of the
entire PID. The larger the proportional
gain, the stronger the adjustment
intensity.
When there is a deviation between the
feedback and target value, the output and
the deviation are adjusted in proportion. If
the deviation is constant, the adjustment
amount is also constant. Proportional
adjustment can quickly respond to
1
10
○