Siemens SIMOTICS S-1FT7 - Page 125

Configuration
5.4 Brake resistances (armature short-circuit braking)
S-1FT7 synchronous motors
Configuration Manual, 09/2018, A5E45099423B AA
123
Armature short-circuit braking
with external braking resistor without external braking resistor
M
Br
= braking torque
I
Br rms
= rms braking current
M
Br rms
= average braking torque
t
R
= run-out time
M
Br opt
= optimum braking torque
n = speed
I
Br
= braking current
n
N
= rated speed