57
DRIVE THE MOTOR
3
Start/stop from the operation panel (PU operation)
3.4.3 Setting the frequency by switches (three-speed setting) (Pr. 4 to Pr. 6)
POINT
Use operation panel ( ) to give a start command.
To give a frequency command, terminal between SD and RH, RM, or RL is turned ON. (three-speed setting)
Pr. 79 Operation mode selection must be set to "4" (External/PU combined operation mode 2).
[Connection diagram]
Operation
example
Operation at low speed (10Hz)
Operation Display
1.
Screen at powering ON
The monitor display appears.
2. Change the Pr. 79 setting to "4". (Refer to page 34 for change of the setting.)
[PU] display and [EXT] display are lit.
3. Start
Turn ON the low-speed switch (RL).
4. Acceleration constant speed
Press to start running.
The frequency value on the indication increases
according to Pr. 7 Acceleration time until " "
(10.00Hz) is displayed.
[RUN] display is lit during forward rotation operation
and flickers slowly during reverse rotation operation.
5. Deceleration
Press to stop.
The frequency value on the indication decreases
according to Pr. 8 Deceleration time and displays
" " (0.00Hz) when the motor is stopped.
6. Stop
Turn OFF the low-speed switch (RL).
SD
RH
RM
RL
Inverter
Operation
panel
High speed
Middle speed
Low speed
ON
ON
ON
Output frequency (Hz)
Speed 1
(High speed)
Speed 2
(Middle speed)
Speed 3
(Low speed)
RH
RM
RL
Time
ON
High
speed
Middle
speed
Low
speed
Stop
OFF
High
speed
Middle
speed
Low
speed
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