Inovance MD280NT2.2GB - Group F6: Process Control PID Function

Description of Function Codes MD280 User Manual
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Function Code Parameter Name Setting Range Default
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Group F6: Process Control PID Function
PID control is a general process control method. By performing proportional, integral and
differential operations on the difference between the feedback signal and the target signal,
it adjusts the output frequency and constitutes a feedback system to stabilize the controlled
counter around the target value.
It is applied to process control such as flow control, pressure control and temperature
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Figure 6-19 Principle block diagram of PID control
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Target
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Feedback
PID output
Function Code Parameter Name Setting Range Default
F6-00 PID setting source
0: F6-01
1: AI1
2: AI2
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4: Multi-reference
0
F6-01 PID digital setting 0.0%–100.0% 50.0%
F6-00 is used to select the channel of target process PID setting. The PID setting is a
relative value and ranges from 0.0% to 100.0%. The PID feedback is also a relative value.
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When F6-00 is set to 0, you need to set the value of F6-01.
Function Code Parameter Name Setting Range Default
F6-02 PID setting change time 0.0–3000.0s 0.0s
It is used to set the time for the PID setting to change from 0% to 100%.
Function Code Parameter Name Setting Range Default
F6-03 PID feedback source
0: AI1
1: AI2
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3: AI1 – AI2
0
This parameter is used to select the feedback signal channel of process PID.
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