Installation manual

D9124 Operation & Installation Manual
Page 21
© 1996 Radionics
74-06799-000-D 2/96
ZONEX, Addressable Points
Description
You can use POPIT (Point of Protection Input Transponder) modules to provide up to
126 off-board points, bringing the total number of points the D9124 system can monitor to
134. 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 (see Figure 14 ). Data expansion loops connect to the
motherboard. The motherboard connects to the POPEX module. POPEX modules
connect to the point buss on the panel.
You can connect up to four data expansion loops to one D8125 input at the motherboard.
Data Loops 1-4 connect to the D8125 POPEX 1 input on the motherboard (terminals 11
through 18). Data Loops 5-8 connect to the D8125 POPEX 2 input at the motherboard
(terminals 19 through 26).
If a POPIT is disconnected from the expansion loop, a trouble message appears
immediately. See the D9112 Program Entry Guide (74-06145-000) for programming
options.
If you connect a POPIT that is programmed for a point number that does not appear in
the program for the D9124 to the expansion loop, it appears as an extra point at the
command centers when the point is faulted, and during the service walk test.
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.
POPIT modules monitor their sensor loops for
three conditions, loop normal, loop open, and
loop shorted. They report these three
conditions to the D9124. A ground on a
POPIT sensor loop reports as an open.
The D9124 uses point programming to
interpret the sensor loop information
reported by the POPITs and make the appropriate system response. Detection devices
connect to each POPIT. The POPIT sensor loop can supervise an unlimited number of
detection devices, however, certain applications may limit the number of detection
devices. Consult the appropriate NFPA standards.
The POPIT can come in a tampered enclosure, or an untampered enclosure.
Verify the proper setting of motherboard jumpers: Make sure the jumpers above
terminals 18 to 24 on the motherboard are in the D8125 position (see Figure 11 ).
POPEX/POPIT Configurations
With the D8125 POPEX Module Supplied:
• You can use D8125 POPEX 1, data loops 1 to 4 (terminals 11 to 18) on the
motherboard.
• You can install a maximum of 63 POPITs (points 9 to 71).
• Points 7 and 8 are used for power supply and initiation circuit supervision. POPITs
are not required for these functions.
J
9
17 18 19 20 21 22 23 24 25 26
J9 J8 J7 J12J11 J10
D125B D8125 D125B D8125 D125B D8125 D125B D8125 D125B D8125 D125B D8125
JUMPERS SET IN D8125 POSITION
P5
Figure 11: Jumpers Set to D8125 Position