ECI XDM-300, Installation And Maintenance Manual

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XDM-300 Installation and
Maintenance Manual Connectors Pin Assignment
417006-2311-0H3-A00 ECI Telecom Ltd. Proprietary A-27
Pin Name Function Direction
26 GND Ground --
27 MIN_COM Minor alarm Output
28 N/C Not connected --
29 WARN_COM Warning alarm Output
30 GND Ground --
31 GND Ground --
32 ALM_O3 Alarm output 3 Output
33 N/C Not connected --
34 N/C Not connected --
35 GND Ground --
36 N/C Not connected --
ALARMS Connector
The ALARMS connector is a SCSI 68-pin female connector that carries three
groups of lines:
|
Eight external alarm inputs connected to the ALARM inputs of the
XDM-300 shelf. Four inputs are allocated to each XDM-300 shelf. Each
input is activated by closing a dry contact provided from the customer’s
facility.
| Eight sets of change-over relay contacts floating with respect to shelf
ground, which serve as rack (bay) status outputs. Each couple of the eight
relays is assigned to one of the output alarm lines of the two XDM-300
shelves connected to the xRAP-B.
|
Four sets of change-over relay contacts floating with respect to shelf
ground, which serve as rack (bay) alarm indication lines. The relays,
identified as critical, major, minor, and warning, are activated by the
corresponding alarm relays of XDM-300 shelves.
| Two sets of change-over relay contacts floating with respect to shelf
ground, which serve as Critical alarm buzzer activation signal. The relay is
activated whenever a Critical alarm is detected in the corresponding shelf.
The signal can be used to activate a local buzzer (Critical buzzer) in the
customer's alarms collecting system.
| Two lines for muting the Critical buzzer in the customer's alarms collecting
system.
Relay contact ratings are 75 V in open state, and 1A in closed state.