
B–63523EN–1/03
12. DISPLAY/SET/EDIT
1589
NOTE
1 When the sample data store function is enabled (bit 2 of
parameter No. 6350 is set to 1), the period during which data
can be stored is halved.
2 When the above period is exceeded, no more data is stored
even if the torque sensing command signal is 1.
3 Once the power is turned off, stored torque data is erased.
When you want to maintain stored torque data even after
the power is turned off, save the data as sample data, or
save the data on the memory card.
4 When the torque sensing command signal is set to 0, store
operation is interrupted. When the signal is set to 1 again,
store operation restarts to store torque data following the
torque data stored before the interruption. To restart store
operation from the beginning, input the store counter clear
signal.
5 Because of the difference in interface, even when servo
motor data and spindle motor data are stored as data
collected at the same point of time, these data items are
strictly not at the same point of time.
At the same time when storing disturbance load torque data, the CNC
calculates the maximum value of the disturbance load torque data. When
calculating the maximum value, the CNC uses the absolute value of the
average data of most recent eight data items (for a servo motor) or four
data items (for a spindle motor) collected every 8 ms regardless of the
store interval.
When the statistical calculation start signal is set to 1, the CNC obtains
the average and distribution of stored disturbance load torque data. While
the torque sensing command signal is 1, or when statistical calculation has
already been done, the CNC does not perform this calculation.
A graph of stored torque data can be plotted on the torque monitor screen.
On the torque monitor screen, you can also save data as sample data,
output latest data to the memory card, and set a detection level.
This screen can be used only when bit 7 of parameter No. 3119 is set to
0 (VGA type display).
1. Press the <SYSTEM> function key.
2. Press the [>] soft key several times.
3. Press the [TRQ–MN] soft key.
Statistical calculation of
disturbance load torque
data
Torque monitor screen
Display method