The Graph Of Overload Protection Characteristics Of Rotary Servo Motor; Characteristics Of Electromagnetic Brake - Mitsubishi Electric MELSERVO-J5 HK Series User Manual

6.2
The graph of overload protection characteristics
of rotary servo motor
Overload protection of rotary servo motors has been enhanced for MR-J5 servo amplifiers with firmware version A7 or later.
Refer to "Overload protection characteristics" in the following manual.
MR-J5 User's Manual (Hardware)
6.3

Characteristics of electromagnetic brake

Before operating the servo motor, confirm that the electromagnetic brake operates properly.
The operation time of the electromagnetic brake varies depending on the power supply circuit being used.
Check the operation delay time with an actual machine.
The characteristics of the electromagnetic brake provided for the rotary servo motor with an electromagnetic brake are shown
below.
Item
*1
Type
*4
Rated voltage
Power consumption at 20 °C [W]
*6
Coil resistance [Ω]
*6
Inductance [H]
Brake static friction torque
*2
Release delay time [s]
Braking delay time DC off
[s]
Permissible Per braking
braking work [J]
Per hour
Brake looseness at servo motor shaft
[degree]
*3
Brake life Number of braking
times [times]
Work per braking [J]
Selection example For the suppressed
of surge voltage 125 V
absorbers to be
For the suppressed
*6
used
voltage 350 V
*1 This type does not have a manual release mechanism. Use a 24 V DC power supply to release the brake electrically.
*2 The value for initial on gap at 20 °C.
*3 Brake lining wear due to braking will increase the brake gap, but the gap is not adjustable. Therefore, the brake life indicates the number
of times the brake can be applied before gap adjustment becomes necessary.
*4 Prepare a power supply exclusively for the electromagnetic brake.
*5 The values are design values. These are not the guaranteed values.
*6 Select the electromagnetic brake control relay properly, in consideration of the characteristics of the electromagnetic brake and surge
absorber. When a diode is used as a surge absorber, the electromagnetic braking time becomes longer.
*7 The value of the brake static friction torque is the lower limit in the initial state at 20 °C.
6 HK-KT SERIES
116

6.2 The graph of overload protection characteristics of rotary servo motor

HK-KT053WB
HK-KT13WB
HK-
KT1M3WB
HK-
KT13UWB
Spring actuated type safety brake
24 V DC (-10 % to 0 %)
6.4
91
0.14
*7
[N•m] 0.48 or more
0.03
*2
0.01
5.6
56
*5
2.5
20000
5.6
TND20V-680KB (Manufactured by NIPPON CHEMI-CON CORPORATION)
TND10V-221KB (Manufactured by NIPPON CHEMI-CON CORPORATION)
HK-KT23WB HK-
HK- KT23UWB
KT43(4)WB HK-
HK- KT43UWB
KT63(4)WB
7.9 8.2
73 70
0.20 0.19
1.9 or more 1.3 or more
0.03 0.03
0.02 0.02
22 22
220 220
1.2 0.9
20000 20000
22 22
HK- HK-
KT7M3(4)WB KT7M3UWB
HK- HK-
KT103(4)WB KT103UWB
10 9.0
57 64
0.16 0.23
3.2 or more 3.2 or more
0.04 0.03
0.02 0.03
64 66
640 660
0.9 0.9
20000 20000
64 33
HK-
KT153(4)WB
HK-
KT203(4)WB
HK-
KT202(4)WB
13.8
42
0.15
9.5 or more
0.09
0.03
64
640
0.9
5000
64