Siemens SINAMICS S120

DC link components
8.3 Braking Module Booksize Compact
Booksize Power Units
Manual, (GH2), 07/2016, 6SL3097-4AC00-0BP8
515
8.3.8.1
Characteristic curves
Duty cycle for braking resistors without a thermostatic switch
Figure 8-12 Duty cycle for braking resistors without a thermostatic switch
T [s] time period of braking duty cycle
A [s] load duration
P
N
[kW] rated power (continuous power) of the braking resistor
P
max
[kW] peak power of braking resistor (6 x P
N
)
Table 8- 15 Duty cycles
6SN1113–1AA00–0DA0
6SL3100–1BE31–0AA.
Short duty cycle
Long duty cycle
Short duty cycle
Long duty cycle
A [s]
0.1
0.4
1
2
T [s]
11.5
46
68
136
Duty cycles for braking resistors with a thermostatic switch
Figure 8-13 Duty cycles for braking resistors with a thermostatic switch
T [s] time period of braking duty cycle
A [s] load duration
P
N
[kW] rated power (continuous power) of the braking resistor
P
max
[kW] peak power of braking resistor (6 x P
N
)
4 x P
N
[kW] = power permitted every 90 s for 20 s