D8125 Operation and Installation Guide
D8125
Page 28
© 2004 Bosch Security Systems, Inc.
74-04247-000-N
Installation
3.3.3.2
Wiring POPITs to a POPEX Module
Two positive (+) and two negative (-) zone expansion loop terminals are provided on each POPEX Module for wiring
convenience.
IMPORTANT
When using two POPEX Modules, each module must have its own expansion loop (e.g., POPIT Modules assigned to
POPEX #1 cannot be placed on the POPEX #2 Zone Expansion Loop). Limit your zone expansion loop coming back
to the POPEX module, to a maximum of three data runs.
Note:
Up to two POPEX modules can be connected to one D8112G1/G2 Control Panel.
When connecting the zone expansion loop to the POPEX Module, follow the steps below:
1.
Connect the positive (
+
) wire from the zone expansion loop to the POPEX Module positive (
+
) loop input.
2.
Connect the negative (
-
) wire from the zone expansion loop to the POPEX Module negative (
-
) loop input.
3.3.3.3
Wiring POPIT Sensor Loop
Each POPIT Module can supervise an unlimited number of detection devices on its two-wire sensor loop. Each POPIT can
monitor normally-open devices wired in parallel, normally-closed devices wired in series, or a combination of devices wired
in parallel and series. Open, closed, and normal circuit conditions can be detected and transmitted to the D8112G. A system
cannot be armed normally if any of the sensor loops are faulted. (A system with loop faults can be force-armed, however.)
All POPIT sensor loops must be terminated with a 33 k
Ω
End-Of-Line resistor (Bosch Security Systems Model D106F)
supplied with each POPIT module.
IMPORTANT
The maximum length of 22 AWG (0.8 mm) cable used for each sensor loop is determined by voltage drop. Bosch
Security Systems recommends the use of twisted-pair wire in all POPEX-POPIT installations. If a noisy or unstable
environment is suspected, or if a long sensor loop wire run is used, the cable must be shielded against AC induction.
Refer to the AC induction hint in Wiring POPITs to the Expansion Loop in this section for more information.
3.3.4
POPIT Module Assignments
Six switches provided on each POPIT assign the module to a D8112G1/G2 master zone. These switches provide a unique
expansion point identification for each POPIT Module. In Table 7 and Table 8, numbers indicate which switches must be
placed in the ON position for each POPIT. Switches indicated by a dash (-) must be placed in the OFF position.
Programming
Note
0101
0101
0101
The points of protection must be assigned sequentially. Example: If 12 points of protection are assigned to Master
Zone 4, the 12 POPITs must have switch settings corresponding to I.D. Codes 401 through 412.
3.3.5
POPIT Labels
Four sets of POPIT I.D. labels (similar to Table 4 and Table 5) are provided with each POPEX Module. Each set is associated
with either POPEX #1 (PX 1) or POPEX #2 (PX 2), and with either the horizontal or vertical mode. In every POPEX/POPIT
installation, at least two sets of these labels are NOT used. For example, when installing a vertical mode ZONEX system, all
horizontal mode labels should be discarded. If the ZONEX system uses only one POPEX Module, discard all the POPEX #2
labels.
IMPORTANT
Do NOT mix the horizontal and vertical labels. The system can be programmed for only one mode. Do NOT use
both types of labels in the same ZONEX system. A label should be attached to each POPIT Module when the switches
are set, thereby preventing duplicate switch settings. Do NOT place labels on POPIT covers, attach them directly to
the circuit board. This will help to prevent points from being labeled or set incorrectly.
