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Keep input wiring and output wiring separated.
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It is strongly advised that you label wiring to all devices in the system
when necessary.
Grounding Moxa 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 Alarm Contact
The Alarm Contact consists of the two middle contacts of the terminal
block on EDS’s top panel. You may 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.
FAULT: The two middle contacts of the 6-contact
terminal block connector are used to detect both
power faults and port faults. The two wires attached
to the Fault contacts form an open circuit when:
1.
EDS has lost power from one of the DC power
inputs.
OR
2.
The PORT ALARM DIP Switch for one of the ports
is set to ON, but the port is not connected
properly.
If neither of these two conditions is satisfied, the
Fault circuit will be closed.
Wiring the Redundant Power Inputs
The top two contacts and the bottom two contacts of the 6-contact
terminal block connector on EDS’s top panel are used for EDS’s two DC
inputs. Top and front views of one of the terminal block connectors are
shown here.
STEP 1: Insert the negative/positive DC wires into
the V-/V+ terminals.
STEP 2: To keep the DC wires from pulling loose, use
a small flat-blade screwdriver to tighten the
wire-clamp screws on the front of the terminal block
connector.
STEP 3: Insert the plastic terminal block connector
prongs into the terminal block receptor, which is
located on EDS’s top panel.