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.
Содержание PG-Flex
Страница 10: ...PG Flex System Overview 2 Figure 1 Typical PG Flex Configuration 23 Shelf shown ...
Страница 24: ...PG Flex System Overview 16 ...
Страница 44: ...Installing PG Flex System Hardware 36 Figure 16 Line Unit and Channel Unit Installation Locations ...
Страница 52: ...Installing PG Flex System Hardware 44 Figure 21 Connecting the Metallic Bypass Pair ...
Страница 62: ...Installing PG Flex System Hardware 54 ...
Страница 66: ...Terminal Management 58 Figure 28 Connecting an ASCII Terminal to a Line Unit ...
Страница 104: ...Performance Monitoring 96 ...
Страница 120: ...Troubleshooting 112 ...
Страница 158: ...Screen Menus and Definitions A 36 ...
Страница 162: ...Acronyms and Glossary Glossary 4 ...
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