5910 Ethernet Gateway Hardware Manual
October 19, 2007
24Vdc power supply. See the Configuration Jumpers section for setting J1 and the
Specifications for the current requirements.
Note: An AC adapter cannot be used in Hazardous Locations.
3.2 Ethernet Connection
The Ethernet network connects to the RJ-45 modular jacks labeled Port1 through Port5. The
RJ-45 jack mates with 8-pin connector and cable assemblies common to Ethernet 100Base-T
applications. Use data quality twisted pair cable. For best performance use shielded cable.
Pins 1,2,3 and 6 are used. Pins 4,5,7, and 8 are not used. See Figure 2: 5905 Ethernet RJ-45
Connection for pin connections.The Ethernet RJ-45 ports are MDI/MDIX Auto crossover
compatible. The allows the use of straight-through or cross-over cables.
RJ-45
1: TD/RD+
2: TD/RD-
3: RD/TD+
4: nc
5: nc
6: RD/TD-
7: nc
8: nc
3 4 52 6 7 81
Figure 2: 5905 Ethernet RJ-45 Connection
3.3 Power Connections
The 5905 module may be powered in any one of the following ways:
5Vdc applied to the 5910 from the I/O Bus.
11-30Vdc applied to the 5910 on P8.
NOTE: The 5905 module is for use with Class 2 output power supplies only.
3.4 I/O Bus Connection
The 5910 module is normally powered through the connection to the system I/O Bus. The
5910 module is connected to the system I/O Bus using a cable connected to P1 or P2. Refer
to the System Configuration Guide, at the beginning of this manual, for complete
information on the system I/O Bus cabling. A jumper link must be installed in the bottom or
“Bus power 5V” position on J1.
3.5 External Power Connection using an AC adapter
The 5910 Ethernet Switch can be powered using a 12Vdc AC adapter (Control
Microsystems part number: 210056). The AC adapter plugs into a 120Vac supply and
provides 12Vdc to the 5910. A jumper link must be installed in the upper or “External
Power 11-30V” position on J1.
