No-Load Operation Test Run; No-Load Operation Test Run - YASKAWA J1000 Technical Manual

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.
n No-Load Operation Instructions
The 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.
1. Turn on the power to the drive. The initial display appears.
2.
Press the key to select LOCAL. The LO/RE LED will turn on.
Press to give the drive a Run command. RUN will light and the motor will rotate
3.
at 6 Hz.
4. Ensure the motor is rotating in the correct direction and no faults or alarms occur.
If there is no error in step 4, press
frequency in 10 Hz increments verifying smooth operation results at all speeds. For each
5.
frequency, monitor the drive output current (U1-03) through the LED operator to confirm
the current is well below the motor rated current.
The drive should operate normally. Press
6.
motor comes to a complete stop.
70
Step
to increase the frequency reference. Increase the
STOP
to stop the motor. RUN flashes until the
YASKAWA ELECTRIC SIEP C710606 31B YASKAWA AC Drive – J1000 Technical Manual
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Display/Result
STOP
STOP
Off On
Motor
Forward
STOP
Flashing Off