YASKAWA SIEMENS CNC Series, Maintenance Manual, Serviceman Handbook

Page: 301 / 373

14.3 Motion Control
14-91
„ Relevant parameters
Below are the parameters in relation to the spindle drive winding change.
• MD6401 (Cn401) SPEED_DETECTION_LEVEL (spindle)
Meaning: Speed detection signal level S
CHW
Setting value: [0.01 %]
Sets the percentage for the rated speed MD6500 (Cn500).
• MD6402 (Cn402) SPEED_DETECTION_WIDTH (spindle)
Meaning: Speed detection signal hysteresis
△
S
Setting value: [0.01 %]
Set the percentage for the rated speed MD6500 (Cn500)
• MD6809 (Cn809) SELECTION_CODE1 (spindle)
Meaning: Winding changing setting
Setting value: 0001---No winding switching unit. High-speed winding fixed
(initial value)
0000---Winding switching unit is used
0010---Winding switching unit and speed cramp function is used
At the time of acceleration with low-speed winding, if the rated speed operation is not acti-
vated with SDET signal detection speed S
CHW
on CNC, the low-speed winding overspeed
alarm for spindle drive may be output before switching over to the high-speed winding. In
this case, by specifying the setting for the speed cramp function, when the speed reaches
S
CHW
, the spindle drive speed can be cramped to S
CHW
.