Mitsumi electronic 55K Frequency setting voltage current bias and gain Pr to Pr, To 20mA To 120Hz

PARAMETERS

4.2.56Frequency setting voltage (current) bias and gain (Pr. 902 to Pr. 905)

Pr. 902 "frequency setting voltage bias" Pr. 903 "frequency setting voltage gain" Pr. 904 "frequency setting current bias" Pr. 905 "frequency setting current gain"

Related parameters

Pr. 20 "acceleration/deceleration reference frequency"

Pr. 73 "0-5V/0-10V selection"

Pr. 79 "operation mode selection"

You can set the output frequency as desired in relation to the 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.

#Use Pr. 902 to set the bias frequency at 0V.

#Use Pr. 903 to set the output frequency relative to the frequency command voltage set in Pr. 73.

#Use Pr. 904 to set the bias frequency at 4mA.

#Use Pr. 905 to set the output frequency relative to the 20mA frequency command current (4 to 20mA).

Parameter	Factory Setting		Setting Range
Number
902	0V	0Hz	0 to 10V	0 to 60Hz
903	5V	60Hz 〈 50Hz〉	0 to 10V	1 to 120Hz
904	4mA	0Hz	0 to 20mA	0 to 60Hz
905	20mA	60Hz 〈 50Hz〉	0 to 20mA	1 to 120Hz

(Hz)	60Hz
frequencyOutput
	〈50Hz〉
	Bias
Pr.902
Pr.904

0

0

0

4

Factory setting

Gain Pr.903

Pr.905

4

100% Pr.73

Frequency setting signal 5V

10V

20mA

<Setting>

(1)The frequency setting voltage biases and gains may be adjusted in either of the following three ways:

1)Any point can be adjusted with a voltage applied across terminals 2-5.

2)Any point can be adjusted with no voltage applied across terminals 2-5.

3)Bias voltage is not adjusted.

(2)The frequency setting current biases and gains may be adjusted in either of the following three ways:

1)Any point can be adjusted with a current flowing at terminal 4.

2)Any point can be adjusted with no current flowing at terminal 4.

3)Bias current is not adjusted.

157