Delta ASDA-A3 Series User Manual page 535

Motion Control
The application of flying shear is divided into two types according to the clutch engagement
time. The first type is fully engaged. Its E-Cam curve includes the acceleration zone,
synchronous speed zone, deceleration zone, and reset zone. The slave axis is completely
controlled by the E-Cam system. The second type is partially engaged: the E-Cam operation is
7
triggered by the signal, and the E-Cam curve has no reset zone. After one cycle of E-Cam
operation, the clutch disengages and uses the PR command to reset. Then, the E-Cam waits for
the next trigger signal. As shown in Figure 7.3.8.2 using a cutting machine as an example, the
material feeder is the master axis and the cutting axis is the slave axis. The feeder maintains at
a constant speed, and the cutting axis operates according to the E-Cam curve or PR command.
Acceleration
Reset path
Cutting path
Cutter starts
Fully engaged
The fully engaged E-Cam application is suitable for cutting operations without marks. Its E-Cam
curve includes the acceleration zone, synchronous speed zone, deceleration zone, and reset
zone. The master axis operates at a constant speed. The slave axis operates according to the
E-Cam curve and the cutting is complete in the synchronous speed zone. In each cycle, the
slave axis starts from the acceleration zone. To avoid wasting materials in the first cycle, set the
initial lead pulse before engaged (P5.087). The setting value is the total pulse number of the
synchronous speed zone, deceleration zone, and reset zone. If the cutting sensor and material
are not aligned during the first cutting, you need to add the offset pulse number of the sensor.
Speed curve
(PUU/s)
Position
curve (PUU)
Sensor offset
7-132
Same speed zone
zone
Figure 7.3.8.2 Cutting path and operation cycle of the cutting machine
Cutting point
Cutting length
Dec.
Sync. speed zone
zone
Delay of first cycle
Initial lead pulse before engaged
(P5.087)
Figure 7.3.8.3 Fully engaged E-Cam cycle of the cutting machine
Deceleration
zone
Cutting axis (slave
axis) path
Cutting point
Reset Acc.
Sync. speed zone
zone zone
E-Cam cycle
Material feeder axis
(master axis) path
Cutting point
Cutting length
Dec. Reset Acc.
zone zone zone
ASDA-A3