Installing The D8125 Popex Module; Mounting; Wiring The D8125 To The Control Panel; Wiring Popits To The Data Expansion Loop - Bosch D9412GV2 Operation And Installation Manual

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9.3

Installing the D8125 POPEX Module

For information on the Multiplex Bus
Interface, refer to the D8125 Multiplex Bus
Interface Operation and Installation Guide
(P/N: 36796).
Save the POPIT Label Sheets: The D8125 is
packaged with two sets of POPIT label sheets. One
set is marked "Bank 1" for use with the D7412GV2
and D7212GV2. The other set is marked "Bank 2" for
use with the D9412GV2 and D9112. Use the sheets
later to label the POPITs. Refer to Section 9.3.6
POPIT Module Point Assignments on page 45.
9.3.1

Mounting

To install the D8125 in the enclosure with the control
panel:
1. Align the D8125 POPEX Module with any of the
four mounting locations in the enclosure
(Figure 2 on page 15).
2. Using the screws provided with the module,
secure it in the enclosure.
9.3.2

Wiring the D8125 to the Control Panel

To wire one or two D8125 Modules to the control
panel (Figure 17 on page 41 and Figure 18 on page
42):
Power Down the Control Panel: Disconnect the
positive (red) battery lead at the battery and unplug
the transformer.
For Points 9 to 127 (9 to 75 on D7412GV2):
1. Connect the GND terminal of the D8125 to
Terminal 23 on the D9412GV2 or to Terminal 9
on the D7412GV2.
2. Connect the OUT terminal of the D8125 POPEX
Module to ZONEX IN 1, Terminal 27.
3. Connect the IN terminal of the D8125 POPEX
Module to ZONEX OUT 1, Terminal 28.
4. Connect the AUX terminal of the D8125 to
Terminal 24 on the D9412GV2 or to Terminal 3
on the D7412GV2.
For Points 129 to 247 (D9412GV2 only):
1. Connect the GND terminal of the D8125 to
Terminal 23.
2. Connect the OUT terminal of the D8125 POPEX
Module to ZONEX IN 2, Terminal 25.
3. Connect the IN terminal of the D8125 POPEX
Module to ZONEX OUT 2, Terminal 26.
4. Connect the AUX terminal of the D8125 to
Terminal 24.
Bosch Security Systems, Inc. | 7/09 | F01U003641-04
D9412GV2/D7412GV2 | Operation and Installation Guide | 9.0
Refer to Section 9.3.4 Wiring Data Expansion Loops
to POPEX Modules on page 44 for instructions on
connecting POPITs to the D8125 POPEX Module.
9.3.3 Wiring POPITs to the Data Expansion
Loop
Use one two-wire data expansion loop or distribute
the POPITs on up to three loops. Setting DIP
switches on the POPIT Modules assigns them to point
numbers. Refer to Section 9.3.6 POPIT Module Point
Assignments on page 44.
Review Section 4.6.2 Installing and Wiring Detection
Devices on page 18 to determine if shielded wire is
required. Refer to Table 14 to determine the wire
gauge for the length of each data expansion loop.
Table 14: Data Expansion Loop Wire

Specifications

Maximum Length of All Data Expansion Loops
Combined
AWG Length in Meters (Feet)
22 548 (1800)
20 881 (2890)
18 1402 (4600)
16 2231 (7320)
14 3551 (11,650)
Combine Data Expansion Loops
The maximum lengths shown in Table 14 are for all
data expansion loops connected to the same POPEX
Module combined.
Wiring POPITs Together
Do not connect POPITs to each other in
series or with a T-tap. Doing so might
cause random missing POPIT conditions.
Before installing the POPITs, ensure that
the resistance on the data expansion loop
is no more than 40 Ω.
To connect POPITs to one another in parallel:
1. Connect the positive (+) data terminal from one
POPIT to the positive (+) data terminal on the
next POPIT.
2. Connect the negative (-) data terminal from one
POPIT to the negative (-) data terminal on the
next POPIT.
3. Repeat Steps 1 and 2 to connect all POPITs to
the expansion loop. It is not necessary to wire the
POPITs in any particular order on the loop. The
switch setting on each POPIT assigns it a point
number, regardless of its physical location.
Off-Board Points
43