4.1 Test Run
4-22
4.1.12 Running the inverter for motor operation check
If the user configures the function codes wrongly without completely understanding this User's Manual, the
motor may rotate with a torque or at a speed not permitted for the machine.
Accident or injury may result.
After completion of preparations for a test run as described above, start running the inverter for motor
operation check using the following procedure.
If any abnormality is found in the inverter or motor, immediately stop operation and investigate the cause
referring to Chapter 6, "TROUBLESHOOTING."
-------------------------------------- Test run procedure -----------------------------------------------
(1) Turn the power ON and check that the reference frequency
*00
is blinking on the LED monitor.
(2) Set a low reference frequency such as 5 Hz, using the / keys. (Check that the frequency is
blinking on the LED monitor.)
(3) Press the
key to start running the motor in the forward direction. (Check that the reference
frequency is lit on the LED monitor.)
(4) To stop the motor, press the
key.
<Check points during a test run>
• Check that the motor is running in the forward direction.
• Check for smooth rotation without motor humming or excessive vibration.
• Check for smooth acceleration and deceleration.
When no abnormality is found, press the key again to start driving the motor, then increase the
reference frequency using
/ keys. Check the above points again.
Depending on the function code setting, the motor speed may increase to an unexpected
level. This is especially true for vector control with/without speed sensor. The inverter is
equipped with a speed limit function to ensure safety even if the function codes are set
incorrectly.
Until you are familiarized with the function codes (e.g., when you run the system for the first
time), it is recommended to use the frequency limiter (high) (F15) and torque control (speed
limit) (d32/d33). For the first run, gradually increase the speed limit values while checking the
operation to ensure safer work.
The speed limit function works as the speed limiter for the over speed level or torque control.
For the details of the speed limit function, refer to Chapter 5 "FUNCTION CODES."
----------------------------------------------------------------------------------------------
To Next Page
Loading...
Need help?
General
