4.8 No-Load Operation Test Runu No-Load Operation Test RunThis section explains how to operate the drive with the motor decoupled from the load during a test run.n Before Starting the MotorCheck the following items before operation:• Ensure the area around the motor is safe.• Ensure external emergency stop circuitry is working properly and other safety precautions have been taken.n During OperationCheck the following items during operation:• The motor should rotate smoothly (i.e., no abnormal noise or oscillation).• The motor should accelerate and decelerate smoothly.n No-Load Operation InstructionsThe following example illustrates a test run procedure using the digital operator.Note: Before starting the motor, set the frequency reference d1-01 to 6 Hz.Step Display/Result1. Turn on the power to the drive. The initial display appears.- MODE -U1-01= 0.00HzU1-02= 0.00HzU1-03= 0.00ADRVFREF (OPR)RdyJOG FWD FWD/REVLSEQLREF2. Press to select LOCAL. The LO/RE light will turn on.LOREF2F1ESCRUN STOPENTERRESETALARMDIGITAL OPERATOR JVOP-180Off On- MODE -U1-01= 0.00HzU1-02= 0.00HzU1-03= 0.00ADRVFREF (OPR)RdyJOG FWD FWD/REVLSEQLREF3. Press to give the drive a Run command. RUN will light and the motor will rotateat 6 Hz.LOREF2F1ESCRUN STOPENTERRESETALARMDIGITAL OPERATOR JVOP-180RUNRUNOff On- MODE -U1-01= 6.00HzU1-02= 0.00HzU1-03= 0.00ADRVFREF (OPR)RdyJOG FWD FWD/REVLSEQLREF4. Ensure the motor is rotating in the correct direction and that no faults or alarms occur.MotorForward5.If there is no error in step 4, press to increase the frequency reference. Increase thefrequency in increments of 10 Hz, verifying smooth operation at all speeds. For eachfrequency, check the drive output current using monitor U1-03. The current should be wellbelow the motor rated current.– –4.8 No-Load Operation Test Run134 YASKAWA SIEP YAIP1U 01C AC Drive - P1000 Technical Manual
