Dynamic Brake Characteristics; Deceleration Torque - Mitsubishi CNC Meldas HC Series Specification Manual

4-2 Dynamic brake characteristics

When an emergency stop occurs, the servo amplifier stops the motor with the dynamic brakes.
(Deceleration control stop can also be selected.) The dynamic brake characteristics are determined by
the servomotor and servo amplifier combination.

4-2-1 Deceleration torque

The dynamic brakes use the motor as a generator, and obtains the deceleration torque by consuming
that energy with the dynamic brake resistance. The characteristics of this deceleration torque have a
maximum deceleration torque (Tdp) regarding the motor speed as shown in the following drawing. The
torque for each motor is shown in the following table.
Fig. 4-2 Deceleration torque characteristics of a dynamic brake
Stall torque
Motor type
(N•m)
HC52 (Note 1) 2.94
HC52 (Note 2) 2.94
HC102 5.88
HC152 8.82
HC202 13.72
HC352 22.5
HC452 37.2
HC702 49.0
HC902 58.8
Note 1. When using MDS-B-SVJ2
Note 2. When using MDS-B-V1/V2/V14/V24
Chapter 4 Characteristics
T
dp
Deceleration
torque
0
Table 4-2 Max. deceleration torque of a dynamic brake
T N
dp
(N•m) (r/min)
2.40 496
2.40 335
11.19 884
18.49 1062
10.56 457
23.8 716
47.9 1459
62.1 1641
85.4 2109
N
dp
Motor speed
dp
Motor type
HC53 (Note 1)
HC53 (Note 2)
HC103
HC153
HC203
HC353
HC453
HC703
HC103R
HC153R
HC203R
HC353R
HC503R
4–5
Stall torque T
dp
(N•m) (N•m)
2.94 2.54
2.94 2.54
5.88 10.72
8.82 18.88
13.72 9.85
22.5 21.7
37.2 40.6
49.0 57.9
3.18 3.67
4.78 5.44
6.37 7.16
11.14 10.18
15.92 15.97
N
dp
(r/min)
472
449
1045
1676
728
1215
2109
2531
582
668
973
1215
1432