Delta ASDA-A3 Series User Manual page 47

Installation
When installing an external regenerative resistor, connect the resistor to P3 and C contacts, and
P3 and D contacts are left open. It is recommended that you choose external regenerative
resistors of the resistance values specified in the table on page 2-18. For easy calculation of the
2
regenerative resistor capacity, except for the energy consumed by IGBT, there are two ways
provided to calculate the capacity according to the selected rotary motor.
Rotary motor:
Selecting the regenerative energy
Calculation of the regenerative energy when there is no external torque
(a)
If the motor is making a reciprocating motion, the regenerative resistor consumes the excess
return energy. Refer to the following table when calculating and selecting the required
regenerative resistor.
Servo drive (kW)
Low
inertia
Medium
inertia
2-20
(1) Moving direction of the object; (2) Direction of torque;
(3) Regenerative energy generated when the motor decelerates
Motor
0.1 ECM-A3L-C □ 1 040F
0.1 ECM-A3L-C □ 1 0401
0.2 ECM-A3L-C □ 1 0602
0.4 ECM-A3L-C □ 1 0604
0.4 ECM-A3L-C □ 1 0804
ECM-A3L-C 1 0807
0.75 □
1.0 ECMC-C □ 1 1010 □
1.0 ECMC-E □ 1 1310 □
1.5 ECMC-E □ 1 1315 □
2.0 ECMC-E □ 1 1320 □
2.0 ECMC-E □ 1 1820 □
Rotor inertia
motor decelerates from
2
(× 10 kg.m )
-4
□ 2 □ 3 1 0.0229
□ 2 □ 3 1 0.04
□ 2 □ 3 1 0.09
□ 2 □ 3 1 0.15
□ 2 □ 3 1 0.352
2 3 1
□ □ 0.559
2 □ 3 2.65
2 □ 3 8.41
2 □ 3 11.2
2 □ 3 14.6
2 □ 3 34.7
Regenerative energy
generated when the regenerative
energy of the
the rated speed to 0 capacitance
without load Eo (joule)
0.11
0.20
0.45
0.74
1.74
2.76
13.1
18.48
24.62
32.09
76.26
ASDA-A3
Maximum
Ec (joule)
8.42
8.42
8.42
8.42
8.42
26.21
26.21
26.21
26.21
34.94
34.94