ASDA-B2
Chapter 2 Installation
Revision May, 2018
2-13
resistor which is equipped with thermal switches. Please contact the distributors for
load characteristics of the regenerative resistor.
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 according to the selected linear motor or 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)
Servo Motor
Rotor Inertia
J (× 10
-4
kg.m
2
)
Regenerative
power from empty
load 3000r/min to
stop
Eo (joule)
Max.
regenerative
power of
capacitance
Ec(joule)
Low Inertia
0.1 ECMA-C
△
0401
0.037
0.18 3
0.2 ECMA-C
△
0602
0.177
0.87
4
0.4
ECMA-C
△
0604
0.277 1.37
8
ECMA-C
△
0804
0.68 3.36
8
0.75 ECMA-C
△
0807
1.13
5.59
14
1.0 ECMA-C
△
1010
2.65
13.1
18
1.0 ECMC-C
△
0910
2.62 12.96 18
2.0 ECMC-C
△
1020
4.45
22.0
21
3.0 ECMA-C
△
1330
12.7 62.80 28
Medium Inertia
0.4
ECMA-E
ᇞ
1305
8.17
40.40
8
1.0
ECMA-E
ᇞ
1310
8.41
41.59
18
1.5
ECMA-E
ᇞ
1315
11.18
55.28
18
2.0
ECMA-E
△
1320
ECMA-E
△
1820
14.59
34.68
72.15
171.50
21