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
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
1FT7064-5WF7 3.3 5 11 14 19 17
1FT7105-5WF7 0.7 26 89 111 127 114