Setting The Frequency Using An Analog Signal (Voltage Input) - Mitsubishi Electric FR-F820-00046 Instruction Manual

4.5.4 Setting the frequency using an analog signal
(voltage input)
• Use or
• Use the frequency setting potentiometer to give a frequency command (by connecting it to 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 via terminal 10.)
Frequency setting
potentiometer
Potentiometer
The following shows the procedure to operate at 60 Hz.
Operating procedure
1.
Turning ON the power of the inverter
The operation panel is in the monitor mode.
2.
Changing the operation mode
Set "4" in Pr.79. [PU] and [EXT] indicators are ON. (To change the setting, refer to
3.
Start
Press or
4.
Acceleration → constant speed
Turn the frequency setting potentiometer clockwise slowly to full. The frequency value on the monitor increases
according to the setting of Pr.7 Acceleration time, and "
5.
Deceleration
Turn the frequency setting potentiometer counterclockwise slowly to full. The frequency value on the monitor
decreases according to the setting of Pr.8 Deceleration time, the monitor displays "
motor stops rotating. [FWD] or [REV] indicator blinks.
6.
Stop
Press . [FWD] or [REV] indicator turns OFF.
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.
Parameters referred to
Pr.7 Acceleration time, Pr.8 Deceleration
Pr.79 Operation mode selectionpage 228
Pr.125 Terminal 2 frequency setting gain
C2 (Pr.902) Terminal 2 frequency setting bias
on the operation panel (FR-DU08) to give a start command.
Inverter
Operation panel
(FR-DU08)
10
2
5
. [FWD] or [REV] indicator blinks as no frequency command is given.
timepage 216
frequencypage 339
frequencypage 339
page 110.)
" (60.00 Hz) appears on the monitor.
" (0.00 Hz), and the
4. BASIC OPERATION
4.5 Basic operation procedure (PU operation)
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