14.1.7 Braking resistor
14.1.7.1 Internal br
aking resistor
Description
An internal braking resistor is designed in the converter (excluding S200 Basic PN FSA and FSB
and S200 PN FSA (0.1kW)) to absorb regenerative energy from the motor. The table below
shows the information of the internal braking resistor:
Table 14-10 Internal braking resistor of the SINAMICS S200 converter product line (PN version)
Frame size Resistance
(Ω)
Maximum continuous
po
wer(P
cont_int
)
(W)
Maximum peak
po
wer(P
max_int
)
(W)
Maximum braking
energy(E
max_int
)
(J)
1 AC/3 AC, 200 V ... 240 V
FSA (0.2 kW) 200 8 373 63
FSB (0.4 kW) 100 16 742 123
FSC (0.75 kW, 1 kW) 50 30 1884 292
3 AC, 380 V ... 480 V
FSA (0.2 kW, 0.4 kW) 500 14 754 210
FSB (0.75 kW ... 1.0 kW) 160 15 2312 637
FSC (1.75 kW ... 2.5 kW) 70 30 5086 1137
FSD (3.5 kW ... 7.0 kW) 27 65 9896 1948
More information
For more inf
ormation about connecting the braking resistor, see Section "Connecting the
braking resistor (Page148)".
14.1.7.2 External braking resistor
Description
If the motor feeds back more energy than can be dissipated by the internal braking resistor, or
when you use a converter without the internal braking resistor, you will require an external
braking resistor. You can select a suitable external braking resistor according to your calculation
result for the specic application.
When selecting a braking resistor, you must take into account the factors such as load inertia,
deceleration time, speed variation, and braking period according to your specic application
and technology.
Technical data
14.1Technical data of the converter
SINAMICS S200 PROFINET servo drive system with SIMOTICS S-1FL2
618 Operating Instructions, 11/2023, FW V6.3, A5E51646752B AB