—
7
—
Wiring Requirements
WARNING
The power for this product is intended to be supplied by a Listed
Power Unit, with output marked LPS, and rated to deliver 12 to
45 VDC at a maximum of 600 mA.
WARNING
Safety First!
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.
Please read and follow these important guidelines:
y
Use separate paths to route wiring for power and devices. If power wiring
and device wiring paths must cross, make sure the wires are perpendicular
at the intersection point.
y
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.
y
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 together.
y
Keep input wiring and output wiring separate.
y
It is strongly advised that you label wiring to all devices in the system,
when necessary.
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.
ATTENTION
This product is intended to be mounted to a well-grounded
mounting surface, such as a metal panel.
Wiring the Relay Contact
The EDS-505A/508A has two sets of relay output—relay 1 and relay 2. Each
relay contact consists of two contacts of the terminal block on the
EDS-505A/508A’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.
