Setting The Frequency With Analog Signals - Mitsubishi FR-A800 Instruction Manual

Basic operation procedure (PU operation)
4.5.4

Setting the frequency with analog signals

(voltage input)
POINT POINT
• Use the operation panel (FR-DU08) (
• 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).)
Operation example
Screen at power-ON
1.
The monitor display appears.
Changing the operation mode
2.
Set "4" in
Pr.79. [PU] and [EXT] indicators are on. (For setting value change, refer to
Start
3.
Press or
Acceleration → constant speed
Turn the potentiometer (frequency setting potentiometer) clockwise slowly to full. The frequency value on the indication
4.
increases in Pr.7 Acceleration time, and "
Deceleration
Turn the potentiometer (frequency setting potentiometer) counterclockwise slowly to full. The frequency value on the
5.
indication decreases in Pr.8 Deceleration time, and the motor stops rotating with "
[REV]
indicator flickers.
Stop
6.
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 time
Pr.79 Operation mode selection
Pr.125 Terminal 2 frequency setting gain frequency
C2(Pr.902) Terminal 2 frequency setting bias frequency
110
BASIC OPERATION
Frequency setting
potentiometer
Potentiometer
Operate at 60 Hz.
. [FWD] or [REV] flickers as no frequency command is given.
page 285
page 306
page 415
page 415
)
or to give a start command.
Inverter
Operation panel
10
2
5
Operation
" (60.00 Hz) appears.
(FR-DU08)
page 101.)
" (0.00 Hz) displayed. [FWD] or