Spring-applied brakes
Rated data
NOTICE
Engagement and disengagement times apply to rated voltage (± 0 %) and suppressor circuit of
the brakes with a varistor with DC switching. Without a suppressor circuit, the times may be
longer.
The currents are the maximum values when the brake is cold (value used for dimensioning the
current supply). The values for a motor at operating temperature are considerably lower.
Requirements with regard to the DC 24 V brake: smoothed DC voltage, ripple ≤ 1 %.
Maximum switching energy for each emergency stop with n= 3000 rpm for a maximum of 3-6
emergency stops per hour.
Motor
m850-
S120/
S3960
m850-
S120/
M3960
m850-
S120/
L3960
m850-
S140/
S3240
m850-
S140/
M3240
m850-
S140/
L3240
m850-
S190/
S3000
m850-
S190/
M3000
m850-
S190/
L2520
Supply voltage range
V
in
V
21.6 ... 26.4
Supply voltage
V
rated
V
24
Bemessungsdrehmoment
At 20 °C
M
rated
Nm
20
34
102
At 120 °C
M
rated
Nm
18
32
100
Rated current
I
rated
A
1.2
1.4
2.1
Engagement time t1
t
1
ms
30
50
40
Disengagement time t2
t
2
ms
110
150
230
Friction energy
Q
E
kJ
3.1
5.7
Weight
m
kg
2.0
3.0
6.70
Massenträgheitsmoment
Brake
J
kgcm²
0.75
2.01
10.42
Brake motor
J
MB
kgcm²
7.5
13.3
19.2
18.1
32.5
46.9
72.6
128.9
204.3
Load/brake motor ratio
J
L
/J
MB
74
47
32
34
19
13
15
8
5
Product extensions
Brakes
Spring-applied brakes
137
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