Hardware Overview
Wiring the Alarm Contact
The Alarm Contact terminal block connector is similar to the power
terminal block connector discussed in the next section. 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 right-most contacts of the
3-terminal terminal block
connector form a closed circuit
when Moxa EtherDevice Server is
receiving power from both DC
power inputs. The circuit opens if
power to one of the power inputs
is cut off, or the Moxa EtherDevice
Server self-test fails.
Wiring the Redundant Power Inputs
Moxa EtherDevice Server has two DC inputs located on the top
panel. Top and front views of one of the terminal block connectors
used to connect to a DC power source are shown here. Note that
when viewed from this angle, the negative DC wire goes in the
terminal block connector’s left terminal, and the positive DC wire
goes in the right terminal.
MOXA EtherDevice Server Hardware Installation Guide
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