Siemens SINAMICS S120 - Page 413

Booksize DC Link Components
6.1 Braking Modules
Booksize power units
Manual, (GH2), 06/2008, 6SL3097-2AC00-0BP6
413
Figure 6-7 Duty cycle for braking resistors
T [s] period duration of braking duty cycle
A [s] load duration
P
n
[W] continuous braking power of braking resistor
P
max
[W] peak braking power of braking resistor
Table 6-5 Example of duty cycles
Unit R 25 kW R 100 kW
Short duty cycle Long duty cycle Short duty cycle Long duty cycle
A s 0.1 0.4 1 2
T s 11.5 210 68 460
Table 6-6 Technical data
Unit Braking resistor
6SN1113–1AA00–0DA0
Braking resistor
6SL3100–1BE31–0AAx
P
max
kW 25 100
P
n
kW 0.3 1.5
Weight kg 3.4 5.6
Degree of protection IP54B acc. to EN 60529 IP20 to EN 60529
Connection cables
A shielded connection cable (3 m long; 1.5 mm
2
) is supplied with braking resistor
6SN1113-1AA00-0DA0.
Braking resistor 6SL3100-1BE31-0AA0 is supplied without a connection cable (4 mm
2
).
The maximum cable length for both braking resistors is 10 m.