Mitsubishi Electric FR-F800 Series Instruction Manual page 126

4.5.3
• Use
• 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]
High speed
Middle speed
Low speed
Switch
The following shows the procedure to operate at a low speed (10 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.
Setting the frequency
Turn ON the low-speed switch (RL signal).
4.
Start → acceleration → constant speed
Press
Acceleration time, and "
5.
Deceleration → stop
Press
time, the monitor displays "
signal).
NOTE
• Initially, the high-speed switch (RH signal) is set to 60 Hz for the FM type inverter or 50 Hz for the CA type inverter. The middle-
speed switch (RM signal) is set to 30 Hz, and the low-speed switch (RL signal) is set to 10 Hz. (To change the settings, use
Pr.4, Pr.5, and Pr.6, respectively.)
• In the initial setting, if two or more speed switches (signals) are simultaneously turned ON, priority is given to the switch (signal)
for the lower speed. For example, when both RH and RM signals turn ON, the RM signal (Pr.5) has the higher priority.
• Up to 15-speed switching operation can be performed.
Parameters referred to
Pr.4 to Pr.6 (Multi-speed
Pr.7 Acceleration time, Pr.8 Deceleration
Pr.79 Operation mode
Downloaded from ManualsNet.com
Setting the frequency with switches (multi-speed
setting)
or on the operation panel (FR-DU08) to give a start command.
Inverter
RH
RM
RL
SD
or to start running. The frequency value on the monitor increases according to the setting of Pr.7
to stop. The frequency value on the monitor decreases according to the setting of Pr.8 Deceleration
setting)page 263
timepage 228
selectionpage 240
search engine
Operation panel
(FR-DU08)
" (10.00 Hz) appears on the monitor.
" (0.00 Hz), and the motor stops rotating. Turn OFF the low-speed switch (RL
Speed 1
(High speed)
Speed 2
(Middle speed)
Speed 3
(Low speed)
Time
ON
RH
ON
RM
ON
RL
page 118.)
4. BASIC OPERATION
4.5 Basic operation procedure (PU operation)
1
2
3
4
5
6
7
8
9
10
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