Delta ASDA-B2-F Series User Manual page 25

Installation
(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
2
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
Low Inertia
Medium
Inertia
Medium -
High Inertia
High Inertia
Eo = J * Wr
Assume that the load inertia is N times to the motor inertia and the motor decelerates from 3000
r/min to 0, its regenerative energy is (N+1) x Eo. The consumed regenerative resistor is (N+1) ×
Eo - Ec
resistor it needs is 2× ((N+1) x Eo - Ec) / T.
Steps
1
2
3
4
5
6
7
2-8
Motor
(kW)
ECMA-C 040F□□
0.1
ECMA-C 0401□□
0.2 ECMA-C 0602□□
ECMA-C 0604□□
0.4
ECMA-C 0804□□
ECMA-C 0807□□
0.75
ECMA-C 0907□□
ECMA-C 0910□□
1.0
ECMA-C 1010□□
2.0 ECMA-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□□
3.0 ECMA-E 1830□□
1.0 ECMA-F 1308□□
2.0 ECMA-F 1313□□
3.0 ECMA-F 1830□□
0.4 ECMA-G 1303□□
0.75 ECMA-G 1306□□
1.0 ECMA-G 1309□□
2
/182 (joule), Wr: r/min
joule. If the cycle of back and forth operation is T sec, then the power of regenerative
Set the capacity of regenerative resistor to the maximum
Set T cycle of back and forth operation
Set the rotational speed wr
Set the load/motor inertia ratio N
Calculate the maximum regenerative energy Eo
Set the absorbable regenerative energy Ec
Calculate the needful capacitance of regenerative resistor
Rotor Inertia
2
-4
J (× 10 kg.m )
0.021
0.037
0.177
0.277
0.68
1.13
1.93
2.62
2.65
4.45
12.7
8.17
8.41
11.18
14.59
34.68
54.95
13.6
20.0
54.95
8.17
8.41
11.18
Item
Regenerative power The maximum
from empty load regenerative power
3000r/min to stop Eo of capacitance
(joule)
0.10
0.18
0.87
1.37
3.36
5.59
9.54
12.96
13.1
22.0
62.80
40.40
41.59
55.29
72.15
171.49
217.73
67.25
98.90
217.73
17.96
18.48
24.57
Calculation and Setting Method
Set P1-53 to the maximum value
Enter by the user
Enter by the user or read via P0-02
Enter by the user or read via P0-02
2
Eo= J * wr /182
Refer to the above table
2 ×（(N+1) × Eo－Ec）/ T
ASDA-B2-F
Ec (joule)
4.21
4.21
5.62
8.42
8.42
17.47
17.47
21.22
21.22
25.58
25.58
8.42
21.22
25.58
25.58
25.58
31.20
21.22
25.58
28
8.42
17.47
21.22
September, 2015