TECO-Westinghouse F510 Series, Instruction Manual

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Figure 4.4.103 Diagram of pressure feedback value
Table 4.4.17 Guide for PID parameter adjustment
Increase Setting Value Decrease Setting Value Main Feature
Proportional Gain (P)
(Pros) Increase response time (Pros) Reduce jittering
Increase
stabilized time
(Cons) Might cause pump
jittering
(Cons) Slow down response
Integral Time (I)
(Pros) Smooth output frequency (Pros) Fast response
For smooth
feedback
variations
(Cons) Slow down response
(Cons) Change rapidly output
frequency
Differential Time (D)
(Pros) Avoid overshooting (Pros) System stability
Respond to
system rapid
variations
(Cons) System instability or
motor jittering
(Cons) Overshooting easily
Notes:
- PID parameters can be modified during the inverter is running.
- Cons: disadvantage, Pros: advantage.
Figure 4.4.104 Diagram for PID parameter adjustment
Stablized deviation
Overshooting
23-02: Target Pressure Value
Pressure Feedback
Signal
Stablized Time
Output after PID
adjustment
Output before PID
adjustment