Siemens SIMOTICS S-1FT7 - Page 131

Configuration
5.4 Brake resistances (armature short-circuit braking)
S-1FT7 synchronous motors
Configuration Manual, 09/2018, A5E45099423B AA
129
1FT7 High Dynamic, liquid cooling
Table 5- 8 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 exter-
nal braking
resistor
With external
braking resis-
tor
1FT7065-7WF7
3.4
4
8
10
17
15
1FT7065-7WH7
2.9
2
8
10
23
21
1FT7067-7WF7 2.4 4 11 14 24 21
1FT7067-7WH7
2.3
4
11
14
30
27
1FT7085-7WF7
1.8
4
18
22
34
31
1FT7085-7WH7
1.1
4
17
21
55
49
1FT7087-7WF7
1.2
7
26
32
51
45
1FT7087-7WH7
1.1
5
26
32
67
60