Redundant Power Inputs; Alarm Contact - Weidmuller IE-SW-VL08-8GT Hardware Installation Manual

0 to 550 m, 1310 nm (62.5/125μm, 500MHz*km)
Single-mode:
1000BaseLX 0 to 10 km, 1310 nm (9/125μm, 3.5 PS/(nm*km))
1000BaseLHX 0 to 40 km, 1310 nm (9/125μm, 3.5 PS/(nm*km))
Multi-mode:
100BaseFx 0 to 5 km, 1300 nm (50/125μm, 800MHz*km)
0 to 4 km, 1300 nm (62.5/125μm, 500MHz*km)
Single-mode:
100BaseFx 0 to 40 km, 1310 nm (9/125μm, 3.5 PS/(nm*km))
The concept behind the LC port and cable is quite straightforward. Suppose you
are connecting devices I and II. Unlike electrical signals, optical signals do not
require a circuit in order to transmit data. Consequently, one of the optical lines
is used to transmit data from device I to device II, and the other optical line is
used to transmit data from device II to device I, for full-duplex transmission.
Remember to connect the Tx (transmit) port of device I to the Rx (receive) port
of device II, and the Rx (receive) port of device I to the Tx (transmit) port of
device II.
LC-Port Pinouts
ATTENTION
This is a Class 1 Laser/LED product. To avoid causing serious
damage to your eyes, do not stare directly into the Laser Beam.

Redundant Power Inputs

Both power inputs can be connected simultaneously to live AC/DC power
sources. If one power source fails, the other live source acts as a backup, and
automatically supplies all of the Ethernet Switch's power needs.

Alarm Contact

The Ethernet Switch has one Alarm Contact located on the top panel. For
detailed instructions on how to connect the Alarm Contact power wires to the
two middle contacts of the 6-contact terminal block connector, see the Wiring
the Alarm Contact section on page 6. A typical scenario would be to connect
the Fault circuit to a warning light located in the control room. The light can be
set up to switch on when a fault is detected.
The Alarm Contact has two terminals that form a Fault circuit for connecting to
an alarm system. The two wires attached to the Fault contacts form an open
circuit when (1) Ethernet Switch has lost power from one of the AC/DC power
inputs, or (2) one of the ports, for which the corresponding PORT ALARM DIP
switch is set to ON, is not properly connected.
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