Chapter 2 Installation ASDA-A2
Revision February, 2017 2-11
(1) Regenerative Power Selection
(a) When the external load on torque does not exist
If the motor operates back and forth, the energy generated by the brake will go into the
capacitance of DC bus. When the voltage of the capacitance exceeds a specific value, the
redundant energy will be consumed by regenerative resistor. Two ways of selecting
regenerative resistor are provided here. The table below provides the energy calculation
method. Users can refer to it and calculate the selected regenerative resistor.
220V
Servo Drive
(kW)
Motor
Rotor Inertia
J (× 10-
4kg.m2)
Regenerative power
from empty load
3000r/min to stop
Eo (joule)
The maximum
regenerative power of
capacitance
Ec (joule)
Low
Inertia
0.1
ECMA-C△040F
0.021 0.10 4.21
0.1
ECMA-C△0401
0.037 0.18 4.21
0.2
ECMA-C△0602
0.177 0.87 5.62
0.4
ECMA-C△0604
0.277 1.37 8.42
0.4
ECMA-C△0804
0.68 3.36 8.42
0.75
ECMA-C△0807
1.13 5.59 17.47
1.0
ECMA-C△1010
2.65 13.10 21.22
1.0
ECMC-C△0910
2.62 12.96 21.22
2.0
ECMA-C△1020
4.45 22.0 25.58
3.0
ECMA-C△1330
12.7 62.80 25.58
Medium
Inertia
0.4
ECMA-E△1305
8.17 40.40 8.42
1.0
ECMA-E△1310
8.41 41.59 21.22
1.5
ECMA-E△1315
11.18 55.29 25.58
2.0
ECMA-E△1320
14.59 72.15 25.58
2.0
ECMA-E△1820
34.68 171.49 25.58
3.0
ECMA-E△1830
54.95 271.73 31.20
3.0
ECMA-E△1835
54.95 271.73 31.20
Medium
–High
Inertia
1.0
ECMA-F△1308
13.6 67.25 21.22
2.0
ECMA-F△1313
20.0 98.90 25.58
2.0
ECMA-F△1318
24.9 123.13 31.20
3.0
ECMA-F△1830
54.95 271.73 28
4.5
ECMA-F△1845
77.75 384.48 25
5.5
ECMA-F△1855
99.78 493.42 27
7.5
ECMA-F△1875
142.7 705.66 93
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