Delta ASDA-B2 Series User Manual page 34

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