No-Load Operation Test Run; No-Load Operation Test Run - YASKAWA AC Drive-A1000 Technical Manual

4.8 No-Load Operation Test Run

4.8

No-Load Operation Test Run

u
No-Load Operation Test Run
This section explains how to operate the drive with the motor decoupled 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 to select LOCAL. The LO/RE light 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 that no faults or alarms occur.
If there is no error in step 4, press
frequency in increments of 10 Hz, verifying smooth operation at all speeds. For each
5.
frequency, check the drive output current using monitor U1-03. The current should be well
below the motor rated current.
112
Step
to increase the frequency reference. Increase the
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual
Display/Result
- MODE - DRV
FREF (OPR)
U1-01= 0.00Hz
U1-02= 0.00Hz
U1-03= 0.00 A
JOG FWD FWD/REV
DIGI A O ERA OR VO - 80
- MODE - DRV
FREF (OPR)
U1-01= 0.00Hz
U1-02= 0.00Hz
U1-03= 0.00 A
OG FWD FWD REV
ESC
RESE
RUN
Off
DIGI A O ERA OR VO - 80
- MODE - DRV
FREF (OPR)
U1-01= 6 00Hz
U1-02= 0 00Hz
U1-03= 0 00 A
OG FWD FWD/REV
ESC
RESE
RUN
RUN
Off
Motor
– –
Rdy
LSEQ
LREF
A ARM
Rdy
LSEQ
LREF
2
O
STOP
On
A ARM
Rdy
LSEQ
LREF
2
O
RE
EN ER
STOP
RUN
On
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