Siemens SINAMICS S200 - Page 518

t
on
/s Braking duration
T/s Cycle duration
Example for internal braking resistor application
A 1FL2104-4AG… servomot
or with low moment of inertia (with integrated holding brake)
with a mechanical system is fed from a SINAMICS S200 6SL5510‑1BB11‑0A□0. It is to be
braked from 3000r/min to 600r/min with a braking duty cycle as t
on
= 0.05s, T = 2s.
Moment of inertia of the servomotor 1FL2104-4AG…J
mot
=0.71× 10
-4
kgm
2
Moment of inertia of the driven mechanical systemJ=4×10
-4
kgm
2
n
1
= 3000r/minn
2
= 600r/min
⇒ E
br
= 22.31J<E
max_int
= 292J(1J=1Ws)
⇒ P
br
= 446.26W<P
max_int
= 1884W
⇒ P
avg
= 11.16W<P
cont_int
= 30W
In this case, therefore, no external braking resistor is required.
Example for external braking resistor application
A 1FL2104-4AG… servomotor with low moment of inertia (with integrated holding brake)
with a mechanical system is fed from a SINAMICS S200 6SL5510‑1BB11‑0A□0. It is to be
braked from 6000r/min to 600r/min with a braking duty cycle as t
on
= 0.05s, T = 2s.
Moment of inertia of the servomotor 1FL2104-4AG…J
mot
=0.71× 10
-4
kgm
2
Moment of inertia of the driven mechanical systemJ=8×10
-4
kgm
2
n
1
= 6000r/minn
2
= 600r/min
⇒ E
br
= 170.21J<E
max_int
= 292J(1J=1Ws)
⇒ P
br
= 3404.18W>P
max_int
= 1884W
⇒ P
avg
= 85.10W>P
cont_int
= 30W
In this case, therefore, an external braking resistor is required. Select the external braking
resistor according to the following table.
Frame size Resistance (Ω) Continuous power (W) Peak power (W) Braking energy (J)
FSC (1kW) ≥ 50 > 85.10 > 3404.18 > 170.21
More information
For more information about connecting the br
aking resistor, see Section "Connecting the
braking resistor (Page142)".
Technical data
13.1Technical data of the converter
SINAMICS S200 pulse train servo drive system with SIMOTICS S-1FL2
516 Operating Instructions, 11/2023, FW V6.3, A5E51646767B AA