D9000/D7000 Series Operation & Installation Manual
Page 26
74-07692-000-C 4/97
Off-Board Points
Point (ZONEX) Bus
D9412/D9112 Terminals
23
to
28
D7412/D7212 Terminals
27
to
28
On the D9412/D9112, you can use POPIT (Point
of Protection Input Transponder) modules to
provide up to 238 off-board points, bringing the
total number of points the D9412/D9112 can
monitor to 246. The D7412/D7212 can provide
up to 67 off-board points bringing the total
number of points the D7412/D7212 can monitor
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 POPEX (Point of Protection
Expander) module. POPEX module(s) connect to
the point buss on the panel, terminals 23 and 24
for power (3 and 9 on the D7412 and D7212),
and terminals 25 and 26 (D9412/D9112 only), or
27 and 28 for data.
If a POPIT is disconnected from the expansion
loop, a trouble message appears immediately.
See the
D9000/D7000 Series Program Entry
Guide (74-07695-000) for programming options.
If you connect a POPIT that is programmed for a
point number that does not appear in the
program for the D9412/D9112 to the expansion
loop, it appears as a trouble condition when the
data expansion loop
restores from a faulted
condition. A faulted condition on the data
expansion loop includes:
1)
Positive leg of the data expansion loop
shorted to ground.
2)
Negative leg of the data expansion loop
shorted to ground.
3)
Data expansion loop (positive or negative
leg) becomes disconnected.
4)
Data expansion loop becomes shorted.
Placing a short on the data expansion loop
generates a
PT BUS TROUBLE
report. The panel
sees all points on the shorted expansion loop as
shorted, and responds according to point
programming, except for fire points. The fire
points will respond locally as a trouble condition
and transmit missing fire reports if programmed
during this condition
POPIT modules monitor their sensor loops for
three conditions, loop normal, loop open, and
loop shorted. They report these three conditions
to the D9412/D9112.
The D9412/D9112 uses point programming to
interpret the sensor loop information reported by
the POPITs and make the appropriate system
response.
D8125 POPEX Module
D8127 and D9127 POPIT Modules
D8127 and D9127 POPITs use the D8125
POPEX module to report to the D9412/D9112.
Each D8125 supports up to 119 POPIT points.
Connect two D8125 modules to the D9412/
D9112 to bring the combined total number of
POPIT and on-board points to 246. Points 9 to
127 connect to the first POPEX module. Points
129 to 247 connect to the second POPEX
module. The D9412/D9112 reserves Points 128
and 248 for internal use. The D9412/D9112 only
annunciates activity for each POPIT, not each
detection device connected to the sensor loop.
There are two versions of the D8127 and D9127
modules. Both module enclosures are made of
UL listed fire resistant material. D8127T and
D9127T modules contain tamper switches.
D8127U and D9127U modules come with
untampered covers. Unless the module is
mounted in a tampered enclosure, UL requires
D8127T and D9127T modules for certificated
accounts.
Listings
The D8125 POPEX and the D8127 and D9127
POPIT modules are UL listed for Local or Police
Connected Burglar Alarm, Central Station Burglar
Alarm, Household Burglar Alarm, Central Station
Fire (NFPA 71), Local Fire (NFPA 72, Chapter 6),
Remote Station Fire (NFPA 72, Chapter 8),
Household Fire (NFPA 74) and Electrically
Actuated Transmitter Applications. See the
Installation Guide for UL and Fire Applications in
this manual to determine the required equipment
and enclosures for your application.
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