Mitsubishi FR - S500 instruction manual Adjustment procedure, 106

Parameter	Name	Setting	Description
Number
			Time required for the integral (I) action to provide the
	PID integral	0.1 to 999s	same manipulated variable as that for the proportional
90			(P) action. As the integral time decreases, the set point
	time		is reached earlier but hunting occurs more easily.
		- - -	No integral control.
			Set the upper limit. If the feedback value exceeds the
91	PID upper	0 to 100%	setting, the FUP signal is output. (Process value of
	limit		4mA is equivalent to 0% and 20mA to 100%.)
		- - -	No function
			Set the lower limit. (If the feedback value falls below
	PID lower	0 to 100%	the setting, the FDN signal is output. In this case, the
92			process value of 4mA is equivalent to 0% and 20mA to
	limit
			100%.)
		- - -	No function
			Valid only when Pr. 79 = "3" (n9 = 0 for computer link
			operation) under the PU command in the PU operation
	PID action		or PU/external combined mode. (When the computer
			has the speed command write in the computer link
93	set point for	0 to 100%
			operation mode (NET))
	PU operation
			For external operation, the voltage across 2-5 is the
			set point.
			(C3 value is equivalent to 0% and C4 value to 100%.)
			Time required for the differential (D) action to provide
	PID	0.01 to 10s	the same process value as that for the proportional (P)
94	differential		action. As the differential time increases, greater
	time		response is made to a deviation change.

-- - No differential control.

(6)Adjustment procedure

Parameter setting	Adjust the PID control parameters, Pr. 88 to Pr. 94.
Terminal setting	Set the I/O terminals for PID control.
	(Use Pr. 64 and Pr. 65 (output terminal function selection) to set the
	FUP and FDN signals.)
	(Use any of Pr. 60 to Pr. 63 (input terminal function selection) to set
	the X14 signal.)
Turn on X14 signal.
Run

106