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4
DRIVING THE MOTOR
Start/stop using terminals (External
operation)
4.5.2 Switching between the automatic operation and the manual operation
(operation by the multi-speed setting and the operation panel) (Pr.79=3)
[Connection diagram]
POINT
· Use terminal STF (STR) to give a start command.
· Use terminal RH, RM, and RL to set a frequency (automatic operation) in the normal operation.
· Use the operation panel (FR-DU07) ( ) to set a frequency manually (manual operation) during maintenance,
etc.
· Set "3" (External/PU combined operation mode 1) in Pr.79.
· The priority for the frequency setting is "multi-speed setting > operation panel."
Operation example
Operate at the high-speed (60Hz) (automatic operation) in the normal operation. Operate at 30Hz (manual
operation) using the operation panel for an adjustment.
Operation Display
1. Screen at power-ON
The monitor display appears.
2. Operation mode setting
Set "3" in Pr.79.
[PU] indicator and [EXT] indicator are lit.
(To change the set value, refer to page 48.)
3. Frequency setting for the automatic
operation
Turn ON the high-speed switch (RH).
4. Start → acceleration → constant speed
Turn ON the start switch (STF or STR).
The frequency on the display increases in the Pr. 7
Acceleration time setting, and " " (60.00Hz)
appears.
[FWD] indicator is lit during the forward rotation and [REV]
indicator is lit during the reverse rotation.
If RM has been turned ON, 30Hz is displayed. If RL has
been turned ON, 10Hz is displayed.
5. Deceleration → stop
Turn OFF the start switch (STF or STR).
The frequency on the display decreases in the Pr. 8
Deceleration time setting, and the motor stops rotating with
" " (0.00Hz) displayed.
[FWD] or [REV] indicator turns OFF.
RM
STF
STR
RH
Manual operation
A
utomatic operation
SD
RL
Operation panel
(FR-DU07)
Forward rotation
start
Reverse rotation
start
Inverter
High speed
Middle speed
Low speed
ON
ON OFF
OFF
OFF
ON
The frequency set
by the operation panel
RH
RM
RL
Output frequency (Hz)
Speed 1
(High speed)
Speed 2
(Middle speed)
Speed 3
(Low speed)
Time
ON
High speed
Middle speed
Low speed
CAUTION
When both of STF and STR signals are turned ON, the motor
cannot start.
If both are turned ON while the motor is running, the motor
decelerates to a stop.
Forward
rotation
Reverse
rotation
ON
OFF
Forward
rotation
Reverse
rotation
Stop