Mitsubishi FR - S500 Setting Basic PID control configuration, PID action overview, 102

Parameter	Name	Factory	Setting	Remarks
		Setting	Range
88	PID action	20	20, 21
	selection
89	PID proportional	100%	0.1 to 999 %,
	band		- - -
90	PID integral time	1s	0.1 to 999s,
			- - -
91	PID upper limit	- - -	0 to 100%,
			- - -	Setting is enabled when Pr. 30 = "1"
92	PID lower limit	- - -	0 to 100%,
			- - -
	PID action set
93	point for PU	0%	0 to 100%
	operation
94	PID differential	- - -	0.01 to 10s,
	time		- - -

<Setting>

(1) Basic PID control configuration

			Inverter circuit :						Motor
			PID operation
Pr. 93 or Treminal 2								Manipulated
		+-				1			IM
	Set point		Kp					variable
				1+ Ti S +Td			S
			Terminal 4
			Feedback signal (Process value)
	Kp: Proportion constant Ti: Integral time				S: Operator			Td: Differential time

(2) PID action overview

1)PI action

A combination of proportional control action (P) and integral control action (I) for providing a manipulated variable in response to deviation and changes with time.

REMARKS

PI action is the sum of P and I actions.

[Operation example for stepped changes of process value]

Deviation Set point

Process value

P action	Time
I action
	Time
PI action
	Time

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