Operation
PRIMARY OPERATION56
4.4.3 Test run
Check cables and abnormalities before the test run. After power on, the inverter is in external mode.
1. After power on,
no alarm on PU302 keypad, make sure power indicator and
is on.
2. Connect a switch between STF and SD or STR and SD.
3. Connect a potentiometer between 2-5-10 or provide 0~5V dc between 2 and 5.
4. Adjust potentiometer or 0~5V dc to a minimum value (under 1V).
5. If STF is on, forward rotation is activated. If STR is on, reverse rotation is activated. Turn off STF or STR to
decelerate the motor until it stops completely.
6. Check the following:
1).Whether the direction of motor rotation is correct.
2).Whether the rotation is smooth (check for noise and vibration).
3).Whether the acceleration / deceleration is smooth.
If there is an optional keypad, do the following:
1. Make sure the keypad is connected to the inverter properly.
2. Change the operation mode to PU mode after power on, and the screen will display 50/60Hz.
3. Press button to set the target frequency at about 5Hz.
4. Press for forward rotation and for reverse rotation. Press to decelerate the motor until
it stops completely.
5. Check the following:
1) Whether the direction of motor rotation is correct.
2) Whether the rotation is smooth (check forl noise and vibration).
3) Whether the acceleration / deceleration is smooth.
If it runs successfully, continue the test run by increasing the frequency and go through the above procedure. After
confirming that there are no abnormalities, it can be put into operation.
Note: If the operation of the inverter and motor is abnormal, stop the operation immediately and check the cause of the abnormality
according to “Troubleshooting”. After the inverter stops outputting, if the main circuit power terminals R/L1, S/L2, T/L3 are not
disconnected, if the inverter's output terminals U/T1, V/T2, W/T3 are touched, it may cause an electric shock. In addition, even if
the main loop power supply is turned off, it takes a certain time for the capacitor to discharge. After the main circuit power is cut
off, wait until the power indicator is off, and measure the DC circuit voltage with a voltmeter to confirm that it has drop below the
safe voltage level before touching the internal circuit of the inverter.
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