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Biases And Gains Of The Frequency Setting Voltage (current); (pr. 902 To Pr. 905) - Mitsubishi Electric FR-E500 Instruction Manual

Fr-e500 series transistorized inverter.
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4.2.51 Biases and gains of the frequency setting voltage (current)

(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"
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), i.e. 0 to 5VDC,
0 to 10VDC or 4 to 20mADC, and the output frequency.
z Use Pr. 902 to set the bias of the voltage signal and use Pr. 903 to set its gain.
z Use Pr. 904 to set the bias of the current signal and use Pr. 905 to set its gain.
Factory
Parameter
Setting
Number
902
0V
0Hz
903
5V
60Hz
904
4mA
0Hz
905
20mA 60Hz 0 to 20mA 1 to 400Hz
<Setting>
(1)The frequency setting voltage (current) biases and gains may be adjusted by any of
the three following ways:
1) Any point can be adjusted with a voltage applied across terminals 2-5 (with a
current flowing across terminals 4-5).
2) Any point can be adjusted with no voltage applied across terminals 2-5 (with no
current flowing across terminals 4-5).
3) Only the bias and gain frequencies are adjusted and the voltage (current) is not
adjusted.
Setting Range
0 to 10V
0 to 60Hz
0 to 10V
1 to 400Hz
0 to 20mA 0 to 60Hz
157
PARAMETERS
Related parameters
Pr. 38 "frequency at 5V (10V)
input"
Pr. 39 "frequency at 20mA
input"
Pr. 73 "0-5/0-10V selection"
Pr. 79 "operation m ode selection"
Factory setting
(60Hz)
Bias
Pr.902
Pr.904
0
0
4
Frequency setting signal
Gain
Pr.903
Pr.905
5V
Pr.73
10V
20mA
4

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