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9
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EDS-P308’s DIP Switch Settings
1
2
3
4
5
6
7
8
ON DIP
ON: Enables the corresponding PORT Alarm. If
the port’s link fails, the relay will form an
open circuit and the fault LED will light up.
Off: Disables the corresponding PORT Alarm.
The relay will form a closed circuit and the
Fault LED will never light up.
Wiring the Alarm Contact
The alarm contact consists of the two middle contacts of the terminal block on
EDS’s top panel. Refer to page 8 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.
