PairGain PG-Flex, Manual

Page: 53 / 168

Installing the Central Office Terminal Equipment
45
Connect the Alarms
If external audible and visual alarm indications are required, connect the audible and visual alarm
leads from the CO alarm panel to the COT alarm contacts on PG-Flex according to local practice,
Figure 22, and Table 13.
External Alarm Cutoff (EXT_ACO, CKT_GND). A momentary connection between EXT_ACO
(P23, pin 1) and CKT_GND (P23, pin 2) silence the PG-Flex audible alarms (Figure 22).
Table 13. Alarm Termination
Posts Contact
Post
NO*
Contact
Post
COM*
Contact
Post
NC*
FUNCTION†
SHELF_ID 1 2 3 Shelf ID indicates a major or minor shelf alarm is active.
MAJ_AUD 4 5 6 Indicates a major alarm. The alarm can be silenced using the ACO
button. Connect this relay to the major alarm audible indicator of the
CO alarm system.
MAJ_VIS 7 8 9 Indicates a major alarm. This alarm cannot be disabled.
Connect this relay to the major alarm visual indicator of the
CO alarm system.
MIN_AUD 10 11 12 Indicates a minor alarm. The alarm can be silenced using the ACO
button. Connect this relay to the minor alarm audible indicator of the
CO alarm system.
MIN_VIS 13 14 15 Indicates a minor alarm. This alarm cannot be disabled.
Connect this relay to the minor alarm visual indicator of the
CO alarm system.
*
For the relay contacts, NO is normally opened, NC is normally closed, and COM is common.
† All relays provide form “C” contacts.