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Configuration
5.4 Brake resistances (armature short-circuit braking)
1FT7 High Dynamic, natural cooling
Table 5- 6
Armature short-circuit braking with/without external braking resistors
Motor type
External brak-
ing resistor
1FT7087-7AF7
1FT7117-7AC7
1FT7117-7AF7
1FT7 High Dynamic, forced ventilation
Table 5- 7
Armature short-circuit braking with/without external braking resistors
Motor type
External brak-
ing resistor
1FT7065-7SF7
1FT7065-7SH7
1FT7067-7SF7
1FT7067-7SH7
1FT7085-7SF7
1FT7085-7SH7
1FT7087-7SF7
1FT7087-7SH7
1FT7117-7SC7
1FT7117-7SF7
128
Average braking torque
R
/ Ω
Without external
opt
braking resistor
1.2
7
1.4
27
1.0
21
Average braking torque
R
/ Ω
Without external
opt
braking resistor
3.4
4
2.9
2
2.4
5
2.3
4
1.8
4
1.5
4
1.2
7
1.5
5
1.4
27
1.0
21
M
/
Max. braking
Br rms
Nm
torque
With external
braking resis-
tor
26
86
88
M
/
Max. braking
Br rms
Nm
torque
With external
braking resis-
tor
8
8
11
11
18
17
26
25
86
88
Configuration Manual, 09/2018, A5E45099423B AA
rms braking current I
M
/
Br max
Nm
Without exter-
nal braking
resistor
32
51
107
69
110
104
rms braking current I
M
/
Br max
Nm
Without exter-
nal braking
resistor
10
17
10
23
14
24
14
30
22
34
22
47
32
51
31
55
107
69
110
104
S-1FT7 synchronous motors
[A]
br rms
With external
braking resis-
tor
45
62
93
[A]
br rms
With external
braking resis-
tor
15
21
21
27
31
42
45
49
62
93
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