Westermo RFI-xx - Manual (Page 20)

20 6641-22305
Interface modules
8 copper ports
The interface module with eight copper ports has eight rJ-45 connectors supporting
ethernet 10/100BaseT/TX.
All ports support category 5e cable or better and can handle cable lengths up to 150 m
(492 ft).
Interface specifications
8 copper ports
rated current
144 mA @ 20 VDC
66 mA @ 48 VDC
electrical specification ieee std 802.3. 2005 edition
Data rate 10 Mbit/s or 100 Mbit/s, manual or auto
Duplex Full or half, manual or auto
Circuit type TNV-1
Transmission range Up to 150 m with CAT5e cable or better*
isolation to All other
Connection rJ-45 auto MDi/MDi-X
shielded cable Not required, except when installed in railway applications as
signalling and telecommunications apparatus and located close
to rails*
Conductive housing Yes
Number of ports 8
* NOTE! railway installation close to the rails.
To minimise the risk of interference, a shielded cable is recommended when the cable is located
inside 3 m boundary to the rails and connected to this port.
The cable shield should be properly connected (360°) to an earthing point within 1 m from this
port. This earthing point should have a low impedance connection to the conductive enclosure of
the apparatus cabinet, or similar, where the unit is built-in. This conductive enclosure should be
connected to the earthing system of an installation and may be directly connected to the protective
earth. refer also to "safety" section.