Delta ASDA-A3 Series User Manual page 39

Installation
Servo drive
(kW)
2
0.05
0.1
0.2
0.4
0.4
0.75
0.85
1.3
1.8
Note:
1. □ 1 in the servo motor model name signifies the encoder type.
2. □ 2
in the servo motor name signifies brake or keyway / oil seal type.
E
3. □ 3
in the servo motor model name signifies shaft diameter.
E
4. The * signifies that this model is coming soon.
Assume that the load inertia is N times the motor inertia, and when motor decelerates from
3000 rpm to 0, the regenerative power is (N+1) × Eo and the regenerative resistor needs to
consume (N+1) × Eo－Ec joules. Assume that the reciprocate operation cycle is T sec, then the
required power of regenerative resistor = 2×（(N+1) × Eo－Ec）/ T.
The calculation is as follows:
Step
1
2
3
4
5
6
7
2-16
Motor
ECM-A3H-C□ 0 40F
1 □
E
A A
ECM-A3H-C 0 401
□ □
1
E
A A A
ECM-A3H-C 0 602
□ 1 □
E
A A A
ECM-A3H-C 0 604
□ 1 □
E
A A A
ECM-A3H-C 0 804
□ □
1
E
A A A
ECM-A3H-C 0 807
□ 1 □
E
A A A
ECMC-F 1 308
□ 1 □ 2
E
A A A
ECMC-F 1 313
□ □
1 2
E
A A A
ECMC-F 1 318
□ □
1 2
E
A A A
What to do
Set the capacity of the regenerative
resistor to the maximum.
Set the operation cycle (T)
Set the rotation speed (wr)
Set the load / motor inertia ratio (N)
Calculate the maximum regenerative
resistor (Eo)
Find the regenerative power that can be
absorbed by the capacitor (EC)
Calculate the required capacity of the
regenerative resistor
generated when the motor
Rotor inertia
decelerates from 3000
(× 10-4kg.m2)
1 0.043
2 □
3
E E
A A A
1
0.0742
□
2
3
E E
A A A
1
0.25
2 □
3
E E
A A A
1 0.45
2 □
3
E E
A A A
1
0.914
□
2
3
E E
A A A
1
1.51
2 □
3
E E
A A A
13.6
□
3
E E
A A
20
□
3
E E
A A
24.9
□
3
E E
A A
Calculation and setting method
Set P1.053 to the maximum value
Manual input
Manual input or read the status with P0.002
Manual input or read the status with P0.002
2
Eo= J * wr /182
Refer to the table above
2 ×（(N+1) × Eo－Ec）/ T
Regenerative power
regenerative
power of the
rpm to 0 without load capacitance
Eo (joule)
0.21
0.37
1.24
2.23
4.55
7.47
16.81
24.73
30.78
Revision December, 2017
ASDA-A3
Max.
Ec (joule)
8.42
8.42
8.42
8.42
8.42
26.21
26.21
26.21
26.21