Bosch D8125 Installation And Operation Guide

D8125 | Installation and Operation Guide | 3.0 Non-G 9000 Series Point Expansion
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Bosch Security Systems B.V. | 2020.04 | F01U036298-15 7
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.
2.1 D8125 POPEX and D9127U/T POPIT Modules
D9127U/T POPITs use the D8125 POPEX Module to report to the control panel. Each D8125 supports up to
119 POPIT points. The B9512G, D9412GV4, D9412GV3, D9412GV2, and D9412G support two D8125 POPEX
Modules.
Points 9 to 127 connect to the first POPEX Module. Points 129 to 247 connect to the second POPEX Module.
The control panels reserve Points 128 and 248 for internal use. The control panel only annunciates activity for
each POPIT, not each detection device connected to the sensor loop.
All POPIT module enclosures are made of UL Listed fire resistant material. The D9127 Series POPIT Modules
includes the D9127T (with magnetic tamper switch) and the D9127U (without tamper). Unless the module is
mounted in a tampered enclosure, UL requires the D9127T module for certificated accounts.
2.1.1 Listings
See the Control Panel Approved Applications Compliance Guide or the Installation and System Reference Guide to
determine the required equipment and enclosures for the application.
3.0 Non-G 9000 Series Point Expansion
The following table shows the total number of points that can be monitored using non-G 9000 Series control
panels.
Control Panel
MAX OFF BOARD
POINTS
TOTAL POINTS
Monitored
D9412/D9112 238 246
D9112B1 126 134
D7412/D7212 67 75
D7212B1 40 48
Table 2: Non-9000 and G Series Point Expansion
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 ZONEX terminals (OUT, IN, POWER+,
COMMON) on the control panel.
If a POPIT is disconnected from the expansion loop, a trouble message appears immediately. See the Control
Panel Program Entry Guide for programming options.
If you connect a POPIT to the expansion loop that is programmed for a point number that does not appear in
the program for the D9412/D9112, 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 control panel sees all
points on the shorted expansion loop as shorted, and responds according to point programming, except for
fire points. The fire points 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 control panel.

Bosch D8125 Specifications

General

Housing color	-
Input voltage	12 V
Connectivity technology	Wired

Weight and Dimensions

Depth	80 mm
Width	130 mm
Height	20 mm