Mitsubishi Electric 800 Series Instruction Manual (Function page 361

 Frequency setting voltage (current) bias/gain adjustment method
 Adjustment by applying voltage (current) between terminals 2 and 5 (4 and 5) to set the voltage
(current) at the bias/gain frequency (Example of adjustment at the gain frequency)
Operating procedure
1.
Turning ON the power of the inverter
The operation panel is in the monitor mode.
2.
Changing the operation mode
Press the PU/EXT key to choose the PU operation mode. The PU LED turns ON.
3.
Selecting the parameter setting mode
Press the MODE key to choose the parameter setting mode. (The parameter number read previously appears.)
4.
Calibration parameter selection
Turn the setting dial or press the UP/DOWN key until "C..." appears. Press the SET key to display "C---".
5.
Selecting a parameter
Turn the setting dial or press the UP/DOWN key until "C4" (C4 (Pr.903) Terminal 2 frequency setting gain)
appears for terminal 2, or "C7" (C7 (Pr.905) Terminal 4 frequency setting gain) for terminal 4.
6.
Analog voltage (current) display
Press the SET key to display the analog voltage (current) value (%) currently applied to terminal 2 (terminal 4).
Do not touch the setting dial and UP/DOWN key until calibration is completed.
7.
Voltage (current) application
Apply a 5 V (20 mA). (Turn the external potentiometer connected between terminals 2 and 5 (terminals 4 and 5) to
a desired position.)
8.
Setting completed
Press the SET key to confirm the setting. The analog voltage (current) value (%) blinks when it is applied.
• Turn the setting dial or press the UP/DOWN key to read another parameter.
• Press the SET key to return to the "C---" display.
• Press the SET key twice to show the next parameter.
360
14. (T) Multi-Function Input Terminal Parameters
14.4 Frequency setting voltage (current) bias and gain