Off-Board Points; Point (Zonex) Bus D9412G; Terminals; D7412G Terminals - Bosch D9412G Operations & Installation Manual

D9412G/D7412G | Operation & Installation Guide |
8.0

Off-Board Points

8.1

Point (ZONEX) Bus D9412G

Terminals

D7412G Terminals

The D9412G can use Point of Protection Input
Transponder (POPIT) Modules to provide a maximum
of 238 off-board points, bringing the total number of
points the D9412G can monitor to 246. The D7412G
provides up to 67 off-board points, bringing the total
number of points the D7412G monitors to 75. Each
off-board point requires a POPIT Module.
POPITs connect to supervised two-wire data expansion
loops run from POPIT to POPIT throughout the
premises. Data expansion loops connect to a D8125
Point of Protection Expander (POPEX) Module.
POPEX Modules connect to the point bus on the panel,
Terminals 23 and 24 for power (3 and 9 on the D7412G),
and Terminals 25 and 26 (D9412G only), or 27 and 28
for data.
If a programmed POPIT is disconnected from the
expansion loop, a missing condition appears
immediately and the event is logged. The missing
condition may also be transmitted to a central station or
printed to an on-site printer, if programmed to do so. See
the D9412G/D7412G Program Entry Guide for
programming options.
Extra Point events are generated when a POPIT is
connected to the data expansion bus but does not have a
Point Index assigned to it. Shown below are instances
when an Extra Point event is or is not generated.
If a POPIT is connected to the data expansion bus but
does not have a Point Index assigned to it and...
· the data expansion bus becomes disconnected, no
trouble condition is annunciated or displayed at
command centers and the Extra Point event is not
generated. (However, POPITs programmed with a
Point Index immediately go missing.)
· the data expansion bus restores to a normal
condition from an open, a trouble condition
annunciates and displays at the command center.
In addition, an Extra Point event is generated,
logged, and may be programmed to be sent to the
central station or printed to an on-site printer.
· the point input goes from an electrically normal
state to an open or shorted state, the command
center neither annunciates nor displays a trouble
condition. No Extra Point event is generated.
Bosch Security Systems | 10/03 | 43488E
8.0 Off-Board Points
· the system is presently in a Service Walk Test and
the point input goes from an electrically normal
state to an open or shorted state, the command
center neither annunciates nor displays a trouble
condition. However, an Extra Point event is
logged and printed to an on-site printer, if
programmed. Note: The Service Walk Test never
displays a points' electrical state as 'Extra'.
If the positive or negative leg of the data expansion bus
is shorted to earth ground and Ground Fault Detect is
enabled, a general Ground Fault event is generated.
If the positive or negative leg of the data expansion bus
becomes disconnected, all POPITs beyond the break
report as a missing condition.
If the data expansion bus becomes shorted, all POPITs
report a missing condition and a Pt Bus Trouble event is
generated. When the data expansion bus restores from a
shorted condition, a Pt Bus Restore event is generated,
and if there are POPITs connected to the data expansion
bus without a Point Index assigned to it, an Extra Point
event is generated.
If the positive or negative leg of the data expansion bus
becomes shorted to a Common terminal on the D7212G,
all POPITs report a missing condition. In addition, a Pt
Bus Trouble event is also generated.
If Terminal 28 becomes shorted to a Common terminal,
a Pt Bus Trouble event is not generated. However, a
short between Terminal 27 and a Common terminal
generates a Pt Bus Trouble event and the command
center displays SERVC ZONEX 1. If Terminal 27 and
Terminal 28 are shorted together, a Pt Bus Trouble event
is generated and the command center displays SERVC
ZONEX 1.
The D7212G responds to missing point conditions based
on how the points are programmed and which armed
state the area is in the point is assigned to. For example,
if an interior motion detector point went missing during
a disarmed state, a Missing Trouble event is generated.
However, if the point went missing while the area was
Master Armed, a Missing Alarm event is generated.
Non-fire, 24-hour points always generate a Missing
Alarm event whereas Fire points always generate a
Missing Fire Trouble event.
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