Delta ASDA Series User Manual

Introduction of E-Cam Operation ASDA Series Application Note
2-20 March, 2015
curve with wider constant speed area can be applied to narrower cutters. However, when
using a E-Cam curve which constant speed area is too narrow or doesn’t have enough
constant speed area to a flatter cutter, material might be damaged due to the inconsistent
speed of the master and slave axis when cutting.
Figure 2.27 Relationship between E-Cam curve and the Rotary Shear
The table below elaborates the difference between having a constant speed area and without a
constant speed area. Similarly, when cutting action takes place, speed of cutter axis and the
master axis must be the same. This table may help users understand that the proportion of
cutting circumferences and cutting lengths will determine how the cutter axis works.
Curves without sealing zone:
for sharp cutter applications
Curves with sealing zone:
for flat cutter applications
Cutter circumference >
Cutting length:
U-shaped speed curve;
the slave axis speed
slows down for cutting
action.
Speed
Curve
Master Speed
Position
Curve
Speed
Curve
Master
Speed
Position
Curve
Cutter circumference
<Cutting length:
Inverted U-shaped
speed curve; the slave
axis speeds up for
cutting action.
Speed
Curve
Master Speed
Position
Curve
Speed
Curve
Maser Speed
Position
Curve
1. Cutter circumference > Cutting length: During cutting, two axes run at the same speed.
Other than that, the speed of slave axis is faster than master axis. The faster the
slave axis operates, the shorter the cutting length will be.
2. Cutter circumference ＝Cutting length: Speed of cutter axis = Speed of the master
axis.
3. Cutter circumference < Cutting length: During cutting, two axes run at the same speed.
Other than that, the speed of slave axis is slower than master axis.
Basically, the speed of cutter axis can be used to adjust the cutting length. However, the
wider the constant speed zone, the less adjusting flexibility for cutting length. See Figure
2.28. Let’s compare the curve with wider constant speed area and the curve with the

Delta ASDA Series Specifications

General

Control Modes	Position, Speed, Torque
Communication Interface	RS-485, CANopen, Modbus
Feedback	Incremental encoder, Absolute encoder
Protection	Overvoltage, Undervoltage, Overcurrent, Overtemperature
Power Supply	Single-phase or three-phase AC
Output Power	50W to 15kW (depending on the specific model within the series)