Installing The D8125 Popex Module; Mounting; Wiring The D8125 To The Control/Communicator; Wiring Popits To The Data Expansion Loop - Radionics D9412G Operation And Installation Manual

D9412G/D7412G
Off-board Points
8.3

Installing the D8125 POPEX Module

For information on the Multiplex Bus Interface, see the D8125MUX Multiplex Bus Interface Operation &
Installation Manual.
Save the POPIT Label Sheets: The D8125 is packaged with two sets of POPIT label sheets. One is marked for
use with the D9412/D9112. Save this set for use with the D9412G/D7412G. It will be used later to label the
POPITs.
8.3.1

Mounting

Use the following procedure to install the D8125 in the enclosure with the panel:
1. Align the D8125 POPEX Module with any of the four mounting locations in the enclosure. See Figure 2 .
2. Use the screws provided with the module to secure it in the enclosure.
8.3.2

Wiring the D8125 to the Control/Communicator

Follow the procedure below to wire one or two D8125 Modules to the panel. See Figure 14a and Figure 14b .
Power down first: Power down the panel by disconnecting the positive (red) battery lead at the battery and
unplugging the transformer.
For Points 9 to 127 (9 to 75 on D7412G):
1. Connect the GND terminal of the D8125 to Terminal 23 on the D9412G or to Terminal 9 on the D7412G.
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 D9412G or to Terminal 3 on the D7412G.
For Point numbers from 129 to 247 (D9412G 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.
See section 8.3.4 Wiring Data Expansion Loops to POPEX Modules for instructions on connecting POPITs to the
D8125 POPEX Module.
8.3.3

Wiring POPITs to the Data Expansion Loop

Use one 2-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. See section 8.3.6 POPIT Module Point Assignments.
Review section 3.6.2 Install and Wire Detection Devices to determine if
shielded wire is required. Determine the required wire gauge for the
length of each data expansion loop using Table 8 .
Combine data expansion loops: The maximum lengths shown in
Table 8 are for all data expansion loops connected to the same
POPEX Module combined.
Before installing the POPITs, make sure the resistance on the data expansion loop is no more than 40 Ω Ω Ω Ω Ω ..
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D9412G/D7412G Operation & Installation Guide
Page 42
Maximum Length of all Data
Expansion Loops Combined
Length in feet
AWG
(meters)
22 1,800 (548)
20 2,890 (881)
18 4,600 (1,402)
16 7,320 (2,231)
14 11,650 (3,551)
Table 8: Data Expansion Loop Wire
Specifications
© 2002 Radionics