Siemens SINAMICS S120 - Page 560

Braking resistors
9.4 Technical data
Booksize Power Units
560 Manual, (GH2), 07/2016, 6SL3097-4AC00-0BP8
Table 9- 4 Duty cycles for Braking Module Booksize
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
210
68
460
Table 9- 5 Duty cycles for Braking Module Booksize Compact
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
The following applies when connecting Braking Modules in parallel:
P
N total
= 0.9 x total P
N
of single devices
P
max total
= total P
max
of single devices
Duty cycles for braking resistors with a thermostatic switch
Figure 9-9 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 braking power of the braking resistor
4 x P
N
[kW] = power permitted every 90 s for 20 s