YASKAWA SGDH, User Manual

Page: 415 / 616

7 Digital Operator/Panel Operator
7.2.7 Manual Offset-adjustment of Motor Current Detection Signal (Fn00F)
7-14
7.2.7 Manual Offset-adjustment of Motor Current Detection Signal (Fn00F)
The adjusting range of the motor current detection offset is -512 to +511.
To adjust the offset, perform the automatic adjustment (Fn00E) first.
And if the torque ripple is still big after the automatic adjustment, perform the manual adjustment.
If this function, particularly manual adjustment, is executed carelessly, it may worsen the characteristics.
When performing manual adjustments, run the motor at a speed of approximately 100 min
-1
, and adjust the
operator until the torque monitor ripple is minimized. (Refer to 9.5 Analog Monitor .) Adjust the phase-U
and phase-V offsets alternately several times until these offsets are well balanced.
IMPORTANT
Step
Display after
Operation
Digital Operator Panel Operator Description
1 Press the DSPL/SET or MODE/SET Key to select the
utility function mode.
2 Press the UP or DOWN Key to select Fn00F.
Note: The enabled digit blinks.
3 Press the DATA/ENTER Key once, or DATA/SHIFT
Key for more than one second, and the display will be
as shown on the left (phase U).
4 Press the LEFT or RIGHT or DATA/SHIFT Key for
less than one second to display the phase-U offset
amount.
5 Press the UP or DOWN Key to adjust the offset. Care-
fully adjust the offset while monitoring the torque ref-
erence monitor signal.
6 Press the LEFT or RIGHT or DATA/SHIFT Key for
less than one second.
The display shown on the left appears.
7
Press the DSPL/SET or MODE/SET Key.
The display shown on the left appears (phase V).
8 Press the LEFT or RIGHT or DATA/SHIFT Key for
less than one second to display the phase-V offset
amount.
9
Press the UP or DOWN Key to adjust the offset. Care-
fully adjust the offset while monitoring the torque ref-
erence monitor signal.
10 Press the LEFT or RIGHT Key or DATA/SHIFT Key
for less than one second.
The display shown on the left appears.
11 When the offset adjustment completes, press the
DATA/ENTER Key once, or DATA/SHIFT Key for
more than one second.
The display returns to the utility function mode dis-
play Fn00F.
DSPL
SET
(DSPL/SET Key)
MODE/SET
(MODE/SET Key)
DATA
ENTER
(DATA/ENTER Key)
DATA
(DATA/SHIFT Key)
(Press at least 1 s.)
DATA
(DATA/SHIFT Key)
(Press at least 1 s.)
DATA
(DATA/SHIFT Key)
(Press at least 1 s.)
DSPL
SET
(DSPL/SET Key)
MODE/SET
(MODE/SET Key)
DATA
(DATA/SHIFT Key)
(Press at least 1 s.)
DATA
(DATA/SHIFT Key)
(Press at least 1 s.)
DATA
ENTER
(DATA/ENTER Key)
DATA
(DATA/SHIFT Key)
(Press at least 1 s.)