Setting The Frequency With Switches (Multi-Speed Setting) - Mitsubishi Electric FR-A820-00046 Instruction Manual

Basic operation procedure (PU operation)
4.5.3

Setting the frequency with switches (multi-speed setting)

NOTES Use the operation panel (FR-DU08) (FWD or REV key) to give a start command.
Turn ON the RH, RM, or RL signal to give a frequency command (multi-speed setting).
Set Pr. 79 "Operation mode selection" = "4" (External/PU combination operation mode 2).
Connection diagram
Switch
Fig. 4-5:
Example Operation example: Operate at a low-speed (10 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 4-9.)
Setting the frequency
Turn ON the low-speed switch (RL).
Start ➔ acceleration ➔ constant speed
Press
7 "Acceleration time", and is fixed at "
Deceleration ➔ stop
Press
time", and the motor stops rotating at "
Tab. 4-12:
4 - 16
High speed
RH
Middle speed
RM
Low speed
RL
PC
Multi-speed selection by external terminals
or to start running. The frequency value indicated on the display increases for the time set in Pr.
to stop. The frequency value indicated on the display decreases for the time set in Pr. 8 "Deceleration
Operate the inverter by using multi-speed setting
Inverter
Operation panel
(FR-DU08)
Operation
" (10.00 Hz).
" (0.00 Hz) . Turn OFF the low-speed switch (RL).
Basic operation
Speed 1 (High speed)
Speed 2
(Middle speed)
Speed 3
(Low speed)
Time
ON
RH
ON
RM
ON
RL
I002437E_G, I002435E