Siemens SCALANCE XR324-4M EEC, Краткое руководство по эксплуатации

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7.5 Other properties
Switching properties
Max. number of learnable addresses 8000
Aging time 30 sec
Switching technique Store and forward
Latency 5 μs
Reconfiguration times for redundancy mechanisms
Redundancy mechanism Reconfiguration times
HRP 300 ms
Standby link 300 ms
MRP 200 ms
Mean time between failure (MTBF)
The values in the following table apply to the basic device without media modules.
Device version (power supply) MTBF
1)
1 x 24 to 48 V DC
or
1 x 100 to 240 V AC / 60 to 250 V DC
> 15 years
2 x 24 to 48 V DC
or
2 x 100 to 240 V AC / 60 to 250 V DC
> 15 years
2)
1)
These values apply at 40 °C.
2)
The redundant power supply unit increases the reliability of the system. The MTBF value of the power
supply unit is > 20 years.
In the calculation of the MTBF of a modular switch, the standard parts count applies; in other
words, the reciprocals of all component failure rates are added.
The reciprocal of this total id the MTBF of the entire assembly.
07%)
WRWDO
07%)
EDVLFGHYLFH
07%)
PRGXOHQ
07%)
PRGXOH
Full wire speed switching
Number of frames per second At a frame length of
At 100 Mbps At 1000 Mbps
148810 1488095 64 bytes
84459 844595 128 bytes
45290 452899 256 bytes
23496 234962 512 bytes
11973 119732 1024 bytes
Technical data
7.5 Other properties
SCALANCE XR-300M EEC
Compact Operating Instructions, 11/2019, A5E02661176-14
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