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Start/stop from the operation panel (PU operation)
5
5 DRIVING THE MOTOR
5.1 Start/stop from the operation panel (PU operation)
5.1.1 Setting the frequency by the operation panel
The inverter needs frequency command and start command.
Frequency command (set frequency) determines the rotation speed of the motor.
Turning ON the start command starts the motor to rotate.
POINT
From where is the frequency command given?
y
Operation at the frequency set in the frequency setting mode of the operation panel
refer to 5.1.1 (Refer to page 21)
y
Operation using the setting dial as the potentiometer
refer to Chapter 4 of the Instruction Manual (Applied)
y Change of frequency with ON/OFF switches connected to terminals refer to 5.1.2 (Refer to page 22)
y Perform frequency setting using voltage input signal refer to 5.1.3 (Refer to page 23)
y
Perform frequency setting using current input signal
refer to Chapter 4 of the Instruction Manual (Applied)
Operation example Operate at 30Hz.
Operation
1.
Screen at power-ON
The monitor display appears.
2.
Operation mode change
Press to choose the PU operation mode. PU indicator is lit.
3.
Frequency setting
Turn to show the frequency " " (30.00Hz) you want to set. The frequency flickers for about 5s. While the value is
flickering, press to set the frequency. " " and " " flicker alternately. After about 3s of flickering, the indication of
the value goes back to " " (0.00Hz) (monitor display). (If is not pressed, the indication of the value goes back to
" " (0.00Hz) after about 5s of flickering. In that case, turn again, and set the frequency.)
4.
Start Æ acceleration Æ constant speed
Press to start operation.
The frequency value on the indication increases in Pr. 7 Acceleration time, and " " (30.00Hz) appears.
(To change the set frequency, perform the operation in above step 3. The previously set frequency is displayed at first.)
5.
Deceleration Æ stop
Press to stop. The frequency value on the indication decreases in Pr. 8 Deceleration time, and the motor stops rotating with
" " (0.00Hz) displayed.
REMARKS
y can also be used like a potentiometer to perform operation. ( Refer to Chapter 4 of the Instruction Manual (Applied).)
y When you always operate in the PU operation mode at power-ON, set Pr.79 Operation mode selection = "1" to choose the PU
operation mode always.
REMARKS
y Set the required parameters according to the load and operating
conditions. (Refer to page 32.)
ON
Frequency
Time (s)
(Hz)
Start command
Frequency command
Inverter output
frequency
Operation panel
4