6.11 Manual Offset-Signal Adjustment of the Motor Current Detection Signal (Fn00F)
6-19
6
Utility Functions (Fn)
6.11 Manual Offset-Signal Adjustment of the Motor Current
Detection Signal (Fn00F)
Use this function only if the torque ripple is still high after the automatic offset-signal adjustment of the motor
current detection signal (Fn00E).
Note: The adjusted value is not initialized by executing the Fn005 function (Initializing Parameter Settings).
(1) Preparation
The following condition must be met to manually adjust the offset of the motor current detection signal.
• The write prohibited setting (Fn010) must be set to Write permitted (P.0000).
(2) Operating Procedure
Use the following procedure.
If this function is adjusted incorrectly and then executed, characteristics of the servomo-
tor performance could be affected.
Observe the following precautions when performing manual servo tuning.
• Run the servomotor at a speed of approximately 100 min
-1
.
• Adjust the offset while monitoring the torque reference with the analog monitor until
the ripple of torque reference monitor's waveform is minimized.
• Adjust the phase-U and phase-V offset amounts alternately several times until these
offsets are well balanced.
Step Display after Operation Keys Operation
1
Press the Key to view the main menu for the
utility function.
Use the or Key to move through the list and
select Fn00F.
2
Press the Key.
The display changes to the Fn00F execution display.
3 − Send an SV_ON command from the host controller.
4
First, adjust the phase-U offset.
Press the or Key to change the offset.
Change the set value in increments of 10 in the direc-
tion where the torque ripple decreases, and when you
find the value where the torque ripple is minimized,
set that value.
Adjustment range: -512 to +511
5
Press the key to move the cursor to the V-phase
offset (ZADJIV).
6
Next, adjust the phase-V offset.
Press the or Key to change the offset.
In the same way you adjusted the phase-U offset,
change the set value in increments of 10 in the direc-
tion where the torque ripple decreases, and when you
find the value where the torque ripple is minimized,
set that value.
Adjustment range: -512 to +511
BB − FUNCTION−
Fn00F:Cur ManuAdj
Fn010:Prm Protect
Fn011:Motor Info
Fn012:Soft Ver
BB
Manual Offset− ADJ
of Motor Current
ZADJIU=-00009
ZADJIV=- 00006
RUN
Manual Offset− ADJ
of Motor Current
ZADJIU=-00009
ZADJIV=- 00006
RUN
Manual Offset− ADJ
of Motor Current
ZADJIU=- 00019
ZADJIV=- 00006
RUN
Manual Offset− ADJ
of Motor Current
ZADJIU=- 00019
ZADJIV=- 00006
RUN
Manual Offset− ADJ
of Motor Current
ZADJIU=- 00019
ZADJIV=- 00016
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