Siemens SIMOTICS T-1FW3 User Manual

Configuration
5.3 Braking resistors (armature short-circuit braking)
1FW3 complete torque motors
106 Configuration Manual, 08/2020, A5E46027705B AA
5.3.2 Dimensioning of braking resistors
The correct dimensioning ensures an optimum braking time. The braking torques which are
obtained are also listed in the tables. The data applies for braking from the rated speed. If
the motor brakes from another speed, then the braking time
cannot be linearly reduced.
However, longer braking times cannot occur if the speed at the start of braking is less than
the rated speed.
The data in the following table is calculated for rated values according to the data sheet. The
variance during production as well as iron saturation have not been taken into account here.
Higher currents and torques can occur than those calculated as a result of the saturation.
The ratings of the resistors must match the particular I
2
t load capability.
Dynamic braking
Table 5- 2 Dynamic braking 1FW3, SH 150 Standard
Motor type
External
braking
resistor
R
opt
[Ω]
Average braking torque
M
br av
[Nm]
Max.
braking torque
M
br max
[Nm]
rms braking current
I
br rms
[A]
without external
braking resistor
with external
braking resistor
without external
braking resistor
with external
braking resistor
Standard
1FW3150-1☐H
11
21.5
32.5
40.5
5.3
4.75
1FW3150-1☐L
8.3
17.8
34.5
42.5
8.6
7.7
1FW3150-1☐P
5.5
14.8
35.5
44.0
13.5
12.1
1FW3152-1☐H
5.0
46.5
75
93
12.2
11.0
1FW3152-1☐L
3.7
37.5
80
99
20.0
17.9
1FW3152-1☐P
2.4
32.0
85
105
32.0
28.5
1FW3154-1☐H
3.3
73
122
151
19.3
17.3
1FW3154-1☐L
2.4
60
130
161
32.0
28.5
1FW3154-1☐P
1.6
50
137
170
51.0
45.0
1FW3155-1☐H
2.3
97
164
205
27.0
24.0
1FW3155-1☐L
1.7
77
173
215
43.5
39.0
1FW3155-1☐P
1.1
66
188
235
71
64.0
1FW3156-1☐H
2.0
119
205
255
32.5
29.5
1FW3156-1☐L
1.4
96
215
270
54
48.0
1FW3156-1☐P
0.97
84
240
295
85
76.0

Siemens SIMOTICS T-1FW3 Specifications

General

Brand	Siemens
Model	SIMOTICS T-1FW3
Category	Engine
Language	English