Siemens SINUMERIK 840D sl Function Manual page 477

MD10366 $MN_CLC_OFFSET_ASSIGN_ANAOUT = 6 (hardware assignment for the
external digital NCK inputs)
Note
Before the clearance control function is activated for the first time, check that the entire
working range enabled for clearance control is collision-free:
• MD62505 $MC_CLC_SENSOR_LOWER_LIMIT (lower clearance control motion limit)
• MD62506 $MC_CLC_SENSOR_UPPER_LIMIT (upper clearance control motion limit)
An incorrect control direction can be corrected using one of the following methods:
• Reversing the polarity of the analog input
• Changing the sign of all values in the following machine data:
-
-
Sensor signal
Signal quality
The quality of the analog input signal can be checked using the function-specific display data.
See Chapter "Function-specific display data [Page 493]".
Input voltage range
The input voltage range for the measuring signal of the sensor can be adapted using the
machine data for the weighting factor for the analog NCK inputs:
MD10320 $MN_FASTIO_ANA_INPUT_WEIGHT[<analog input>] = <weighting factor>
The following machine data must be set in order that the weighting factor from the clearance
control function is included in the calculation:
MD62508 $MC_CLC_SPECIAL_FEATURE_MASK, Bit 13 = 1
Function-specific alarm texts
Function-specific alarm texts must first be integrated into the appropriate HMI data
management before they can be displayed. See Chapter "Creating alarm texts [Page 444]".
Special Functions
Function Manual, 09/2011, 6FC5397-2BP40-2BA0
MD62511 $MC_CLC_SENSOR_VELO_TABLE_1 (coordinate velocity of interpolation
points sensor characteristic 1)
MD62513 $MC_CLC_SENSOR_VELO_TABLE_2 (coordinate velocity of interpolation
points sensor characteristic 2)
TE1: Clearance control
11.5 Startup
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