TREND EDS-305 - Manual (Page 11)

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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
FAULT
Top View
Front View
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. One of the ports for which the corresponding
PORT ALARM DIP Switch is set to ON is not
properly connected.
If neither of these two conditions is satisfied, the
Fault circuit will be closed.