Other Properties - Siemens SCALANCE X320-3LD FE Operating Instructions Manual

Technical specifications
8.6 XR-300M EEC technical specifications
8.6.5

Other properties

Table 8- 80
Max. number of learnable addresses
Aging time
Switching technique
Latency
Table 8- 81
Redundancy mechanism
HRP
Standby link
MRP
Mean time between failure (MTBF)
The values in the following table apply to the basic device without media modules.
Device version (power supply)
1 x 24 to 48 VDC
or
1 x 100 to 240 VAC / 60 to 250 VDC
2 x 24 to 48 VDC
or
2 x 100 to 240 VAC / 60 to 250 VDC
These values apply at 40 °C.
1)
The redundant power supply unit increases the reliability of the system. The MTBF value of the
2)
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.
Table 8- 82
At 100 Mbps
148810
84459
45290
190
Switching properties
Reconfiguration times for redundancy mechanisms
Full wire speed switching
Number of frames per second
At 1000 Mbps
1488095
844595
452899
8000
30 sec
Store and forward
5 μs
Reconfiguration times
300 ms
300 ms
200 ms
MTBF
1)
> 15 years
> 15 years
2)
At a frame length of
64 bytes
128 bytes
256 bytes
Operating Instructions, 05/2016, A5E01113043-20
SCALANCE X-300