Setting The Frequency Using An Analog Signal (Voltage Input) - Mitsubishi Electric FR-A820-00046 Instruction Manual

Basic operation procedure (PU operation)
4.5.4

Setting the frequency using an analog signal (voltage input)

NOTES Use the operation panel (FR-DU08) (FWD or REV key) to give a start command.
Use the 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).)
Potentiometer
Fig. 4-6:
Example Operation example: Operate at 60 Hz.
Turning ON the power of the inverter
The monitor display turns ON.
Changing the operation mode
Set "4" in Pr. 79. [PU] and [EXT] indicators turn ON. (For changing the setting value refer to page 4-6.)
Start
Press
Acceleration ➔ constant speed
Turn the frequency setting potentiometer clockwise slowly to full. The frequency value indicated on the display
increases for the time set in Pr. 7 "Acceleration time", and is fixed at "
Deceleration
Turn the frequency setting potentiometer counterclockwise slowly to full. The frequency value indicated on the
display decreases for the time set in Pr. 8 "Deceleration time", and the motor stops rotating at "
[FWD] or [REV] indicator flickers.
Stop
Press
Tab. 4-13:
4 - 18
10
Frequency setting
2
potentiometer
5
Frequency setting by analog voltage input
or . [FWD] or [REV] indicator flickers as no frequency command is given.
. [FWD] or [REV] indicator turns OFF.
Operate the inverter by using the analog voltage input
Inverter
Operation panel
(FR-DU08)
Operation
Basic operation
" (60.00 Hz).
" (0.00 Hz).
I002449E