Mitsubishi FR - S500 Biases and gains of the frequency setting voltage current, Setting

2.3.18 Biases and gains of the frequency setting voltage (current)

to

You can set the magnitude (slope) of the output frequency as desired in relation to the external frequency setting signal (0 to 5V, 0 to 10V or 4 to 20mA DC). The "bias" and "gain" functions are used to adjust the relationship between the input signal entered from outside the inverter to set the output frequency, e.g. 0 to 5VDC, 0 to 10VDC or 4 to 20mADC, and the output frequency.

60Hz<50Hz>		Factory setting 60Hz<50Hz>							Factory setting
( Pr.38 )	(Hz)		( Pr.39 )			(Hz)
	Output frequency	(Across			Output	frequency				(Across
		terminals								terminals
		2-5)								4-5)
0Hz( C2 ) 0V				0Hz( C5 )
		5V or 10V						4mA		20mA
	(0% C3 )	(100% C4 ) Pr.73					(20% C6 )			(100% C7 )
	Frequency setting voltage signal				Frequency setting current signal
Parameter		Name	Factory Setting						Setting	Remarks
			<EC version>						Range
38	Frequency setting voltage gain				60Hz				1 to 120Hz
	frequency			<50Hz>
39	Frequency setting current gain				60Hz				1 to 120Hz
	frequency			<50Hz>
C2 (902)	Frequency setting voltage bias				0Hz				0 to 60Hz
	frequency									Setting is enabled
C3 (902)	Frequency setting voltage bias				0% *				0 to 300%	when Pr. 30 = "1".
C4 (903)	Frequency setting voltage gain			96% *					0 to 300%
C5 (904)	Frequency setting current bias				0Hz				0 to 60Hz
	frequency
C6 (904)	Frequency setting current bias			20% *					0 to 300%
C7 (905)	Frequency setting current gain			100% *					0 to 300%

* Settings may differ because of calibration parameters.

The parameter numbers within parentheses are those for use of the parameter unit (FR-PU04). When the parameter unit (FR-PU04) is used, operation from the operation panel is not accepted.

	POINT
		Use calibration parameters C2, C3 for setting.
Bias setting for 0-5VDC (0-10VDC) input
Gain setting for 0-5VDC (0-10VDC) input		Use Pr. 38, calibration parameter C4 for
		setting.
Bias setting for 4-20mADC input		Use calibration parameters C5, C6 for
		setting.
Gain setting for 4-20mADC input		Use Pr. 39, calibration parameter C7 for
		setting.

(For 4 to 20mADC input, set "4" in any of Pr. 60 to Pr. 63 (input terminal function selection) and assign AU (current input selection) to any of terminals RH, RM, RL and STR, and turn on the AU signal.)

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