KBC Networks ESUL5 - Manual (Page 9)

Ethernet Switch User Manual
Manual-ESUL5_Series_HW-Rev0611A
Copyright © KBC Networks Ltd. Page 9 of 15 www.kbcnetworks.com
2.4 Ethernet RJ45 Connections
Each RJ45 port is adaptive and supports auto MDI/MDI-X connection. They can be
connected by straight through or cross-over cables to terminal devices, servers, hubs or
other switches. Each switch supports IEEE802.3x so the optimum transmission mode
(either half-duplex or full-duplex) and data rate (either 10Mbps or 100Mbps) will be
selected automatically. The connected devices should support this feature too however, if
the connected devices are not adaptive, the port will send at the correct rate but with a
default mode of half duplex.
2.5 Power Connections
A 5 pin, 5.08mm power terminal block should be used to connect the power cable to
the unit.
Figure 2.3 Power connections
Contact number DC connections AC connections
1 PWR1: + PWR1: L
2 PWR1: - PWR1: N
3 Ground Ground
4 PWR2: - PWR2: N
5 PWR2: + PWR2: L
2.6 Grounding Connections
The ESUL5 has a grounding screw located on the top panel of the switch (see Figure 2.4)
this is used for chassis grounding. One end of the chassis grounding cable should be
connected to the grounding screw and the other end of the cable needs to be earthed.
The cross section area of the chassis grounding cable should be more than 2.5mm
2 , the
grounding resistance needs to be <5Ω.
The grounding found on the 5 pin, 5.08mm power terminal block is the surge grounding
connection. The surge grounding and the chassis grounding need to be connected as
shown below for the surge protection circuit to operate.