
12.DISPLAY/SET/EDIT B-63323EN-1/03
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12.1.26 Fine Torque Sensing
Overview
The CNC stores the disturbance torque data detected by a servo motor
or spindle motor to internal memory. The following manipulations are
possible for the stored torque data.
1. The stored torque data can be represented graphically on the
torque graph screen.
2. A detection level for an abnormal load detection alarm can be
specified on the torque graph screen. (The abnormal load
detection function is an option not included in fine torque
sensing.)
3. The stored torque data can be saved as sample data, and the
sample data can be represented graphically together with the
stored data for comparison at later time.
4. The stored torque data can be saved to a memory card.
NOTE
1 This function does not support analog spindles.
2 If the display unit of the CNC is monochrome and has
no graphic function, it displays neither the torque
graph screen nor the torque parameter screen.
Function details
Storing disturbance load torque data
While the torque sensing command signal is 1, the CNC holds the
disturbance load torque data detected by a servo motor or spindle motor
in internal memory. Up to four target axes can be specified in
parameter Nos. 4670 to 4673. Specifying a servo motor as a target axis
requires that bit 0 of servo parameter No. 1958 be set to 1.
If the sample data preservation function is enabled (parameter SPL (bit
2 of parameter No. 4660) = 1), the stored torque data can be saved as
sample data. The original torque data is called the "latest data" in
contrast with the sample data. The time during which the data can be
stored varies according to the number of storage target axes and the
storing interval, as listed below.