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7.3
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]
*7
Brake static friction torque
[N•m]
*2
Release delay time
[s]
*2
Braking delay time [s]
DC off
Permissible braking
Per 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 of
For the suppressed
surge absorbers to be
voltage 125 V
*6
used
For the suppressed
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.
HK-MT053(V)WB
HK-MT13(V)WB
HK-MT1M3(V)WB
Spring actuated type safety brake
24 V DC (-10 % to 0 %)
6.4
91
0.14
0.48 or more
0.03
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-MT23(V)WB
HK-MT43(V)WB
HK-MT63(V)WB
7.9
73
0.20
1.9 or more
0.03
0.02
22
220
1.2
20000
22
7.3 Characteristics of electromagnetic brake
HK-KT7M3(V)WB
HK-KT103(V)WB
10
57
0.16
3.2 or more
0.04
0.02
64
640
0.9
20000
64
7 HK-MT SERIES
157
7
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