Basic operation procedure (PU operation)
110
BASIC OPERATION
4.5.4 Setting the frequency with analog signals
(voltage input)
POINTPOINT
• Use the operation panel (FR-DU08) ( or ) to give a start command.
• Use the potentiometer (frequency setting potentiometer) to give a frequency command (by connecting it across terminals 2
and 5 (voltage input)).
•Set Pr.79 Operation mode selection = "4" (External/PU combination operation mode 2).
[Connection diagram] (The inverter supplies 5 V power to the frequency setting potentiometer (terminal 10).)
NOTE
• To change the frequency (60 Hz) at the maximum voltage input (initial value 5 V), adjust Pr.125 Terminal 2 frequency
setting gain frequency.
• To change the frequency (0 Hz) at the minimum voltage input (initial value 0 V), adjust the calibration parameter C2
Terminal 2 frequency setting bias frequency.
Pr.7 Acceleration time, Pr.8 Deceleration time page 285
Pr.79 Operation mode selection page 306
Pr.125 Terminal 2 frequency setting gain frequency page 415
C2(Pr.902) Terminal 2 frequency setting bias frequency page 415
Operation example Operate at 60 Hz.
Operation
1.
Screen at power-ON
The monitor display appears.
2.
Changing the operation mode
Set "4" in
Pr.79. [PU] and [EXT] indicators are on. (For setting value change, refer to page 101.)
3.
Start
Press or . [FWD] or [REV] flickers as no frequency command is given.
4.
Acceleration constant speed
Turn the potentiometer (frequency setting potentiometer) clockwise slowly to full. The frequency value on the indication
increases in Pr.7 Acceleration time, and " " (60.00 Hz) appears.
5.
Deceleration
Turn the potentiometer (frequency setting potentiometer) counterclockwise slowly to full. The frequency value on the
indication decreases in Pr.8 Deceleration time, and the motor stops rotating with " " (0.00 Hz) displayed. [FWD] or
[REV]
indicator flickers.
6.
Stop
Press . [FWD] or [REV] indicator turns OFF.
Inverter
Operation panel
(FR-DU08)
Frequency setting
potentiometer
5
10
2
Potentiometer
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