YASKAWA SIEMENS CNC Series, Maintenance Manual, Serviceman Handbook

Page: 250 / 373

Drive set-up procedure
14.2.4 Backlash compensation
14-40
14.2.4 Backlash compensation
In YS 840DI system, backlash compensation is carried out at CNC. The following explains
how to set backlash-related machine data.
• MD32450 BACKLASH [0] (For each axis)
Meaning: Backlash compensation amount
Setting value: [mm]
Note: For variable-speed backlash
compensation
function, refer to sepa-
rate specifications.
14.2.5 Quadrant error compensation
In YS 840DI system, functional quadrant error compensation function is used as a quadrant
error compensation function for Servo axis.
The quadrant error compensation is carried out at a drive. (The compensation function in the
CNC cannot be used.)
The following shows parameters relating to this function.
For detailed procedures to adjust functional quadrant error compensation function, refer to a
separate instruction manual.
• MD3068 digit 1 (Pn126 digit 1) SWITCH_FUNCTION_1 (For each axis)
Meaning: Selection of functional quadrant error compensation function
Setting value: 0 --- Disabled
1 --- Enabled (Without pulse suppression processing)
2 --- Enabled (With pulse suppression processing)
Note: Be sure to set the parameter to "2".
• MD3101 (Pn147) 1ST_P_GAIN_QUAD_ERR_COMP (For each axis)
Meaning: Quadrant error compensation 1st-stage gain (Negative -> Positive)
Setting value: [0.00001/s
3
]
Equivalent to the quadrant error compensation 1st-stage integration time
constant for J300/J100 system.
For relations with previous parameters, refer to the (INFO) mentioned
later.
• MD3102 (Pn148) 1ST_P_LMT_OFS_QUAD_ERR_COM (For each axis)
Meaning: Quadrant error compensation 1st-stage limit offset (Negative -> Positive)
Setting value: [0.01%]