ASDA-M Chapter 2 Installation
Revision December, 2014 2-9
When using the external regenerative resistor, the resistor should connect to P, C terminal
and the contact of P, D terminal should be opened. It is recommended to choose the above
mentioned capacitance. For easy calculation of regenerative resistor capacity, except the
energy consumed by IGBT, two ways are provided to select the capacity of external
regenerative resistor.
(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
-4
kg.m
2
)
Regenerative
power from
empty load
3000r/min to
stop
Eo (joule)
The Maximum
regenerative
power of
capacitance
Ec (joule)
Low
Inertia
0.75
ECMA-Cᇞ040F□□
0.021
0.10 4.21
0.75
ECMA-Cᇞ0401□□
0.037
0.18 4.21
0.75
ECMA-Cᇞ0602□□
0.177
0.87 5.62
0.75
ECMA-Cᇞ0604□□
0.277
1.37 8.42
0.75
ECMA-Cᇞ0804□□
0.68
3.36 8.42
0.75
ECMA-Cᇞ0807□□
1.13
5.59 17.47
0.75
ECMA-Cᇞ0907□□
1.93
9.54 17.47
1.5
ECMA-Cᇞ1010□□
2.65
13.10 21.22
1.5
ECMC-Cᇞ0910□□
2.62
12.96 21.22
Medium
Inertia
0.75
ECMA-Eᇞ1305□□
8.17 40.40
8.42
1.0
ECMA-Eᇞ1310□□
8.41 41.59
21.22
2.0
ECMA-Eᇞ1315□□
11.18 55.29 25.58
Medium-High
Inertia
1.5
ECMA-Fᇞ1308□□
13.6 67.25 21.22
High
Inertia
0.75
ECMA-Gᇞ1303□□
8.17 17.96 8.42
0.75
ECMA-Gᇞ1306□□
8.41 18.48 17.47
1.5
ECMA-Gᇞ1309□□
11.18 24.57 21.22
Eo= J * wr
2
/182（joule）, Wr : r/min
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