
B-65270EN/05 4.SERVO FUNCTION DETAILS
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Finally, measure an estimated disturbance value when a
movement is made at a maximum feedrate on the axis, then set
the results of calculations made according to the table below in
"dynamic friction compensation limit value".
|Estimated disturbance value [Ap]| Dynamic friction
compensation limit value
=
Maximum amplifier current value [Ap]
× 7282
<8> Set an unexpected disturbance torque detection alarm level.
Perform several different operations (sample machining program,
simultaneous all-axis rapid traverse acc./dec., etc.), and observe
estimated disturbance values, and measure the maximum
(absolute) value.
Then, set up an alarm level.
1997 (FS15i)
Unexpected disturbance torque detection alarm level
2104 (FS30i, 16i)
Alarm level conversion uses the following expression.
|Estimated disturbance value [Ap]| Unexpected disturbance
torque detection
alarm level
=
Maximum amplifier current value [Ap]
× 7282+500 to 1000 approximately
NOTE
1 Add some margin (usually about 500 to 1000) to
the alarm level to be set.
2 If the "unexpected disturbance torque detection
alarm level" parameter is 32767, no unexpected
disturbance torque alarm detection is performed.
<9> Set a distance to be retraced at unexpected disturbance torque
detection.
If the retrace amount parameter is 0, the motor stops at the point
where an unexpected disturbance torque was detected. To retract
the tool from the location of collision quickly, set the retrace
distance parameter.
0
+
-
Maximum
value
Estimated disturbance value