
B-65270EN/05 4.SERVO FUNCTION DETAILS
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4.12 UNEXPECTED DISTURBANCE TORQUE DETECTION
FUNCTION
Optional function
4.12.1 Unexpected Disturbance Torque Detection Function
(1) Overview
When a tool collides with the machine or workpiece, or when a tool is
faulty or damaged, a load torque greater than that experienced during
normal feed is imposed.
This function monitors the load torque to the motor at servo
high-speed sampling intervals. If it detects an abnormal torque, it
brings the axis to an emergency stop by issuing an alarm, or reverses
the motor by an appropriate amount.
In addition, the function enables the PMC to be used to switch the
speed at warning occurrence or load fluctuation.
Calculates
disturbance load
torque to the motor
PMC
window
Monitors disturbance
load torque
(at 1 ms intervals)
Processes motor stop
unexpected
disturbance torque
detection function
- An application on the PMC
uses a PMC ladder.
Collision
mplifier
Motor
Table
NC software
PMC ladder
Servo software
Set unexpected
disturbance torque
detection level.
Disturbance load
torque data
Monitoring is performed at 1 ms
intervals to reduce stop time.
ctual acceleration
TCMD
Fig. 4.12.1 Overview of unexpected disturbance torque detection
(2) Series and editions of applicable servo software
(Series 30i,31i,32i)
Series 90D0/A(01) and subsequent editions
Series 90E0/A(01) and subsequent editions
(Series 15i-B,16i-B,18i-B,21i-B,0i-B,0i Mate-B,Power Mate i)
Series 9096/A(01) and subsequent editions
Series 90B0/A(01) and subsequent editions
Series 90B1/A(01) and subsequent editions
Series 90B6/A(01) and subsequent editions
(Series 0i-C,0i Mate-C,20i-B)
Series 90B5/A(01) and subsequent editions