Chapter 2 InstallationASDA-A2R Series
2-8 Revision December, 2014
Rotary Motor:
(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.
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
0.05
ECMA-C1040F
□□
0.021
0.10 4.21
0.1
ECMA-C10401
□□
0.037
0.18 4.21
0.2
ECMA-C10602
□□
0.177
0.87 5.62
0.4
ECMA-C10604
□□
0.277
1.37 8.42
0.4
ECMA-C10804
□□
0.68
3.36 8.42
0.75
ECMA-C10807
□□
1.13
5.59 17.47
1.0
ECMA-C11010
□□
2.65
13.10 21.22
2.0
ECMA-C11020
□□
4.45
22.0 25.58
3.0
ECMA-C11330
□□
12.7 62.80 25.58
Medium
Inertia
0.4
ECMA-E11305
□□
8.17 40.40 8.42
1.0
ECMA-E11310
□□
8.41 41.59 21.22
1.5
ECMA-E11315
□□
11.18 55.29 25.58
2.0
ECMA-E11320
□□
14.59 72.15 25.58
2.0
ECMA-E11820
□□
34.68 171.49 25.58
3.0
ECMA-E11830
□□
54.95 271.73 31.20
3.5
ECMA-E11835
□□
54.95 271.73 31.20
Medium
-High
Inertia
0.85
ECMA-F11308
□□
14.1 69.73 21.22
2.0
ECMA-F11313
□□
20.0 98.90 25.58
2.0
ECMA-F11318
□□
24.9 123.13 31.20
3.0
ECMA-F11830
□□
54.95 271.73
28
High
Inertia
0.75
ECMA-F11305
□□
10.3 22.64 17.47
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