Siemens SIMOTICS S-1FT7 - Page 129

Configuration
5.4 Brake resistances (armature short-circuit braking)
S-1FT7 synchronous motors
Configuration Manual, 09/2018, A5E45099423B AA
127
1FT7 Compact, liquid cooling
Table 5- 5 Armature short-circuit braking with/without external braking resistors
Motor type
External brak-
ing resistor
R
opt
/ Ω
Average braking torque M
Br rms
/
Nm
Max. braking
torque M
Br max
/
Nm
rms braking current I
br rms
[A]
Without external
braking resistor
With external
braking resis-
tor
Without ex-
ternal braking
resistor
With external
braking resistor
1FT7062-5WF7
5.5
3
7
8
12
10
1FT7062-5WK7
4.2
2
7
8
19
17
1FT7064-5WF7 3.3 5 11 14 19 17
1FT7064-5WK7
2.4
3
11
14
33
30
1FT7066-5WF7
2.7
7
15
19
26
23
1FT7066-5WH7
2.1
5
16
19
36
33
1FT7068-5WF7
2.1
11
24
30
36
32
1FT7082-5WC7
3.0
8
16
20
19
17
1FT7082-5WF7
2.2
7
16
20
29
26
1FT7082-5WH7
1.5
5
16
20
44
40
1FT7084-5WC7
2.2
12
27
34
30
27
1FT7084-5WF7
1.8
9
27
33
42
38
1FT7084-5WH7
1.2
7
27
33
62
56
1FT7086-5WC7
1.6
16
38
47
42
37
1FT7086-5WF7
1.2
13
38
47
62
56
1FT7086-5WH7
1.3
10
38
47
74
66
1FT7102-5WB7
1.8
21
44
55
37
33
1FT7102-5WC7
1.2
18
44
55
53
48
1FT7102-5WF7
0.7
14
44
55
85
76
1FT7105-5WB7
1.1
39
90
111
68
61
1FT7105-5WC7
0.8
32
89
111
94
84
1FT7105-5WF7 0.7 26 89 111 127 114
1FT7108-5WB7
0.8
54
127
158
95
85
1FT7108-5WC7
0.8
45
128
159
112
100
1FT7108-5WF7
0.6
36
128
159
163
145