D8125 | Installation and Operation Guide | 4.0 Installation
.
Bosch Security Systems B.V. | 2020.04 | F01U036298-15
19
4.3.3.2
Wiring POPITs to a POPEX Module
Two positive (+) and two negative (-) zone expansion loop terminals are provided on each POPEX Module for
wiring convenience.
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.
4.3.3.3
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 kΩ End-Of-Line supplied with each POPIT module.
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.
4.3.4 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 5 and Table 6, 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.
Note: 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.
