Yaskawa Control Board Replacement Procedure for Large Capacity G7 Drives - Manual (Page 4)

TM.G7.02 Page 4 of 5 Rev: 08-08, 08/22/2008
Control Board Replacement Procedure
for Large Capacity G7 Drives
10. The “Shipping Adjust” screen is displayed. See Figure 6. Confirm the output contactor or disconnect
between the motor and drive (if applicable) is closed to ensure the motor is connected to the G7.
Verify it is safe to begin auto-tuning and press RUN.
Figure 6: Auto-tuning Start
11. Drive auto-tuning will run for approximately two minutes. Note: Do not touch the motor terminals.
Although the motor may not rotate, voltage is being applied to the motor. When complete, the G7
display shows the standard Operation menu. See Figure 7.
Figure 7: Auto-tuning Complete
12. After auto-tuning, verify the on-delay compensation values have been set.
13. In the G7s Programming menu, set the factory access password (A1-04 = 0616).
14. Set the factory access level (A1-01 = 616)
15. Check and record (but do not edit) the values of parameters n9-47 thru n9-52. The values should vary
from -10.00 μs to 10.00μs and must not all be 0.00μs. Some settings of zero are acceptable. If all settings
indicate 0.00 μsec, the procedure has not been performed properly. Repeating this procedure will be
necessary. Proceed back to Step 3 to repeat the Shipping Adjustment Auto-tuning process.
No.
Parameter Name
LCD Display
Description Range Resulting Setting
n9-47
On-Delay Comp U+
+U On Delay
Sets the degree of bias on the positive side of the U-
phase for On-Delay Compensation (n9-12, -31, -32).
-10.00~
10.000
____ uS
n9-48
On-Delay Comp U-
-U On Delay
Sets the degree of bias on the negative side of the U-
phase for On-Delay Compensation (n9-12, -31, -32).
-10.00~
10.000
____ uS
n9-49
On-Delay Comp V+
+V On Delay
Sets the degree of bias on the positive side of the V-
phase for On-Delay Compensation (n9-12, -31, -32). -10.00~
10.000
____ uS
n9-50
On-Delay Comp V-
-V On Delay
Sets the degree of bias on the negative side of the V-
phase for On-Delay Compensation (n9-12, -31, -32).
-10.00~
10.000
____ uS
n9-51
On-Delay Comp W+
+W On Delay
Sets the degree of bias on the positive side of the W-
phase for On-Delay Compensation (n9-12, -31, -32).
-10.00~
10.000
____ uS
n9-52
On-Delay Comp W-
-W On Delay
Sets the degree of bias on the negative side of the W-
phase for On-Delay Compensation (n9-12, -31, -32).
-10.00~
10.000
____ uS