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Wiring the Alarm Relay
The alarm relay contacts are in the middle of the terminal block connector. By inserting the
wires and setting the DIP switch of the respective Port Alarm to ON, the alarm relay detects
any port failures and forms a short circuit. The alarm relay is normally open. It closes if there is
a port or power failure.
The following graphic illustrates the ES8108-GigE, which has a DIP switch with 9 switches.
1. Insert the positive and negative wires as shown
in the graphic.
2. Tighten the wire-clamp screws to prevent the
wires from coming loose.
Mounting the Switch
The DIN rail clip is already attached on the rear
of the switch.
1. Insert the upper end of the DIN rail clip into the back of the DIN rail track from its
upper side.
2. Lightly push the bottom of the DIN rail clip into the track.
3. Verify that the DIN rail clip is tightly attached to the track.
Connecting the Ethernet Ports
You can use the following information to connect standard Ethernet cables between the
Ethernet ports and the network nodes. The Ethernet ports support 10BASE-T, 100BASE-TX,
and 1000BASE-TX, full-or half-duplex modes.
All ports automatically detect the signal from the connected devices to negotiate the link speed
and duplex mode (half- or full-duplex). Auto MDI/MDIX allows you to connect another switch,
hub, or workstation without changing straight-through or crossover cables. Crossover cables
cross-connect the transmit lines at each end to the received lines at the opposite end.
Maximum current 1A/24VDC
3
Alarm System
Extra Power
System
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