RuggedCom RS416 - Manual (Page 33)

Ethernet Ports
33
RuggedCom ® RuggedServer™ RS416 Family Installation Guide rev118
negotiating, auto-polarity, and auto-crossover functions. On the RS416P, these ports
support PoE, providing up to 15.4W per port at a nominal 48VDC, auto-sensing and
auto-power off when cables are disconnected. The RJ45 receptacles can also accept
and take advantage of screened (commonly known as “shielded”) cabling. Figure 26
shows the RJ45 port pins configuration.
Pin Signal
1 +Rx
2 -Rx
3 +Tx
4 No Connection
5 No Connection
6 -Tx
7 No Connection
8 No Connection
Figure 26: RJ45 port pins configuration.
NOTE: RuggedCom does not recommend the use of copper cabling of any length for
critical real-time substation automation applications. However, transient suppression
circuitry is present on all copper ports to protect against damage from electrical
transients and to ensure IEC 61850-3 and IEEE 1613 Class 1 conformance. This means
that during the transient event communications errors or interruptions may occur but
recovery is automatic. RuggedCom also does not recommended to use these ports to
interface to field devices across distances which could produce high levels of ground
potential rise, (i.e. greater than 2500V) during line to ground fault conditions.