Mitsubishi Electronics FR-S500 instruction manual Adjustment procedure

				Operation selection function parameters
Parameter	Name	Setting		Description
Number
			Set the upper limit. If the feedback value exceeds the
91	PID upper	0 to 100%	setting, the FUP signal is output. (Measured value of
	limit		4mA is equivalent to 0% and 20mA to 100%.)
		- - -	No function
			Set the lower limit. (If the measured value falls below
	PID lower	0 to 100%	the setting, the FDN signal is output. In this case, the
92			measured value of 4mA is equivalent to 0% and 20mA
	limit		to 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 source 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%.)
	PID		Time required for the differential (D) action to provide
		0.01 to 10s	the same measured value as that for the proportional
94	differential		(P) 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

2

FUNCTIONS

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