Festo Belt Drives 2, Промышленное обслуживание

Страница: 28 / 31

Job Sheet 3 – Variable-Speed Belt Drives
50
© Festo Didactic 54977-3C
31. Connect the motor to the variable frequency drive. To do so, clip the end of
the motor connector to the power inlet inside the workstation enclosure.
Tuck the motor cable far from the rotating parts so that it does not get damaged when the
motor starts.
32.
Ask the instructor to check your work.
Start-up procedure
33. Remove the lockout and tagout devices from the main switch.
34. Close the safety guard and install a lockout device in the padlock eyes.
35. Turn the power on by setting the main switch to the I (on) position. Make sure
the power light on the control panel is turned on.
36. Press the safety reset button.
Testing the system
You will start the motor to make sure the system works properly.
37. Start the motor by pressing the start button on the variable frequency drive.
Then set the frequency of the drive to 15 Hz.
Make sure that the system works properly.
38. Increase the motor speed in steps of 5 Hz until you reach 50 Hz.
Make sure there are no abnormal sounds or vibrations.
Speed measurements
39.
Set the frequency of the variable frequency drive to 15 Hz.
40. Measure the speed of the driving pulley (
𝑛𝑛
1
)
using the photo-reflective
tachometer.
Driving pulley speed (
𝑛𝑛
1
) : ____________
Driving pulley speed (
𝑛𝑛
1
): about
415 rpm