Yaskawa Z1000 AC Drive HVAC - Manual (Page 144)

4.9 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 HOA keypad.
Step Display/Result
1. Before starting the motor, set parameter d1-01, Frequency Reference, to 6 Hz.
The Run command from AUTO mode must be OFF.
– –
2. Turn on the power to the drive. The initial display appears.
- MODE -
U1-01= 0.00Hz
U1-02= 0.00Hz
U1-03= 0.00 A
DRV
Freq Ref (AI)
Rdy
FWD
LSEQ
LREF
3. Press HAND to give the drive a Run command from HAND mode. The HAND light will
turn on and the motor will rotate at 6 Hz.
F2 F1
ESC M M
AUTO OFF
ENTER RESET
-DRIVE-
U1- 01=60.00Hz
----------------
U1- 02=60.00Hz
JOG FWD FWD/REV
-Rdy-
ALM DIGITAL OPERATOR JVOP-183
HAND
ENTER
Off On
- MODE -
U1-01= 0.00Hz
U1-02= 0.00Hz
U1-03= 0.00 A
DRV
Freq Ref (OPR)
Rdy
JOG FWD FWD/REV
LSEQ
LREF
HAND HAND
4. Ensure the motor is rotating in the correct direction and that no faults or alarms occur.
Motor
Forward
5.
If there is no error in step 3, press to increase the frequency reference. Increase the
frequency in increments of 10 Hz, verifying smooth operation at all speeds. For each
frequency, check the drive output current using monitor U1-03. The current should be well
below the motor rated current.
– –
6. The drive should operate normally. Press
OFF
to stop the motor. The HAND light is
OFF and the motor coasts to stop.
F2 F1
ESC M M
AUTO OFF
ENTER RESET
-DRIVE-
U1- 01=60.00Hz
----------------
U1- 02=60.00Hz
JOG FWD FWD/REV
-Rdy-
ALM DIGITAL OPERATOR JVOP-183
HAND
On Off
- MODE -
U1-01= 0.00Hz
U1-02= 0.00Hz
U1-03= 0.00 A
DRV
FREF (OPR)
Rdy
JOG FWD FWD/REV
LSEQ
LREF
HAND HAND
- MODE -
U1-01= 60.00Hz
U1-02= 0.00Hz
U1-03= 0.00A
DRV
Freq Ref (OPR)
Rdy
JOG FWD FWD/REV
LSEQ
LREF
4.9 No-Load Operation Test Run
144 YASKAWA ELECTRIC TOEP YAIZ1U 03A YASKAWA AC Drive – Z1000 User Manual