Delta ASDA-A3 Series User Manual page 73

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 the previous page. For easy
2
calculation of the required regenerative resistor capacity, regardless of the energy consumed by
IGBT, select the capacity of the external regenerative resistor 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.
220V Models
Servo
Inertia
Low
inertia
Medium
inertia
2-28
(1) Moving direction of the object; (2) Direction of torque;
(3) Regenerative energy generated when the motor decelerates
drive Motor
(kW)
0.1
ECM-A3L-C 040F
0.1
ECM-A3L-C 0401
0.2
ECM-A3L-C 0602
0.4
ECM-A3L-C 0604
0.4
ECM-A3L-C 0804
0.75
ECM-A3L-C 0807
0.1
ECM-B3L-C 0401
0.2
ECM-B3M-C 0602
2
0.4
ECM-B3M-C 0604
2
0.4
ECM-B3M-C 0804
2
0.75
ECM-B3M-C 0807
2
Regenerative energy
generated when the motor
Rotor inertia
decelerates from 3000 rpm to
-4 2
(× 10 kg.m )
0.0229
0.04
0.09
0.15
0.352
0.559
0.0299
0.141
3 4 5
0.254
3 4 5
0.648
3 4 5
1.070
3 4 5
regenerative
energy of the
0 without load Eo capacitance Ec
(joule)
0.11
0.20
0.45
0.74
1.74
2.76
0.15
0.70
1.26
3.20
5.29
ASDA-A3
Maximum
(joule)
4.21
4.21
8.42
8.42
8.42
17.47
4.21
8.42
8.42
8.42
17.47