Mitsubishi Electric 800 Series Instruction Manual page 102

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Changing the frequency (60 Hz, initial value) at the

maximum voltage input (5 V, initial value)

• Change the maximum frequency.

With a 0 to 5 VDC input frequency setting potentiometer, change the frequency at 5 V from 60 Hz (initial value) to 50 Hz.

Adjust the setting so that the inverter outputs 50 Hz when 5 V is input. Set "50 Hz" in Pr.125.

Operating procedure

Changing the maximum frequency

Set "50.00 Hz" in Pr.125.

Checking the mode/monitor

to change to the monitor / frequency monitor.

Turn ON the start switch (STF or STR), then turn the potentiometer (frequency setting potentiometer) clockwise

slowly to full. (Refer to steps 2 and 3 in 4.3.3.)

Operate at 50 Hz.

• To set the frequency at 0 V, use the Pr.902.

Output frequency

• Other adjustment methods for the frequency setting voltage gain are the following: adjustment by applying a voltage

directly across terminals 2 and 5, and adjustment using a specified point without applying a voltage across terminals 2 and

Parameters referred to

Pr.125 Terminal 2 frequency setting gain frequency

Pr.902 Terminal 2 frequency setting bias frequency

Pr.903 Terminal 2 frequency setting gain

Initial value

Frequency setting signal

Pr.125 (Pr.903)

4.3 Basic operation procedure (External operation)

4. BASIC OPERATION

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