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• Subject devices are to use conductors suitable for ≧95°C and
must be used for the Power Supply Terminal.
Wiring Requirements
Be sure to disconnect the power cord before installing and/or
wiring your
Moxa EtherDevice Switch.
Calculate the maximum possible current in each power wire and
common wire. Observe all electrical codes dictating the
maximum current allowable for each wire
size.
If the current goes above the maximum ratings, the wiring
could overheat, causing serious damage to your equipment.
Be sure to read and follow these important guidelines:
• Use separate paths to route wiring for power and devices. If power
wiring and device wiring paths must cross, make sure the wires are
pe rpendicular at the intersection point.
NOTE: Do not run signal or communications wiring and power
wiring through the same wire conduit. To avoid interference, wires
with different signal characteristics should be routed separately.
• Use the type of signal transmitted through a wire to determine
which wires should be kept separate. The rule of thumb is that
wiring that shares similar electrical characteristics can be bundled
toge th er.
• Keep input wiring and output wiring separate.
• When necessary, you s hould label the wiring to all devices in the
system.
Grounding the EtherDevice Switch
Grounding and wire routing help limit the effects of noise due to
electromagnetic interference (EMI). Run the ground connection from
the ground screw to the grounding surface prior to connecting devices.
This product is intended to be m ounted to a we ll
-gro unded
m ounting surface, such as a m etal panel. A 4
mm
2
c o nductor
must be used when connection to the external grounding screw
is utilize d.
Wiring the Relay Contact
The Relay Contact consists of the two middle contacts of the terminal
block on the EDS-405A/408A’s top panel. Refer to the next section for
detailed instructions on how to connect the wires to the terminal block
connector, and how to attach the terminal block connector to the
terminal block receptor.
In this section, we explain the meaning of the two contacts used to
connect the Alarm Contact.
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