
10.DISPLAY OPERATION B-63324EN-1/03
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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.
Storing interval
Number of target axes
8ms 16ms 32ms
1 About 69.9
minutes
About 139.8
minutes
About 279.6
minutes
2 About 34.9
minutes
About 69.9
minutes
About 139.8
minutes
3 or 4 About 17.4
minutes
About 34.9
minutes
About 69.9
minutes
NOTE
1 The disturbance load torque data is represented as a
percentage of the rated torque.
2 If the sample data preservation function is enabled
(parameter SPL (bit 2 of parameter number 4660) =
1), the time during which the torque data can be
stored becomes half.
3 If the value in the above table is exceeded, no more
data will be stored, even if the torque sensing
command signal is 1.
4 The stored torque data is erased when the power is
switched off. If you want to keep the torque data after
the power is switched off, save it as sample data or
save it to a memory card.
5 When the torque sensing command signal is reset to
0, the CNC suspends storing the torque data. When
the signal is set to 1 again, the CNC restarts to store
the torque data from a point of break. To start storing
from scratch, input the store counter clear signal.
6 Even when an attempt is made to store the servo
motor torque data and the spindle motor torque data
at the same time, they are not for the same time. This
is because the servo motor data may delay by up to 9
ms.