4.6 No-Load Operation Test Run 4.6 No-Load Operation Test Run u No-Load Operation Test Run This section explains how to operate the drive with the motor uncoupled from the load during a test run. n Before Starting the Motor Check 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 Operation Check the following items during operation: • The motor should rotate smoothly (i.e., no abnormal noise or oscillation). • The motor should accelerate and decelerate smoothly. The following example illustrates a test run procedure using the digital operator.
n No-Load Operation Instructions Note: Before starting the motor, set the frequency reference d1-01 to 6 Hz. 64 SIEP C710606 33A OYMC AC Drive – J1000 User Manual Step Display/Result 1. 2. Turn on the power to the drive. The initial display appears. Press the key to select LOCAL. The LO/RE LED will turn on. STOP 3. Press to give the drive a Run command. RUN will light and the motor will rotate at 6 Hz. STOP Off On 4. Ensure the motor is rotating in the correct direction and no faults or alarms occur. Motor Forward 5. If there is no error in step 4, press to increase the frequency reference. Increase the frequency in 10 Hz increments verifying smooth operation results at all speeds.
For each frequency, monitor the drive output current (U1-03) through the LED operator to confirm the current is well below the motor rated current. Example: 6 Hz → 50 Hz. 6. The drive should operate normally. Press STOP to stop the motor. RUN flashes until the motor comes to a complete stop. STOP Flashing Off