Biases And Gains Of The Frequency Setting Voltage (Current); (Pr. 902 To Pr. 905) - Mitsubishi Electric FR-E540-0.4K-EC Instruction Manual

z z
Bias and gain of frequency setting voltage (current) and built-in frequency
setting potentiometer (Pr. 902 to Pr. 905, Pr. 922, Pr. 923)

4.2.49 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
903 5V 50Hz
904 4mA
905 20mA 50Hz 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
0Hz 0 to 10V 0 to 60Hz
0 to 10V 1 to 400Hz
0Hz 0 to 20mA 0 to 60Hz
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
151
PARAMETERS
Gain
Pr.903
Pr.905
5V
Pr.73
10V
20mA