Octopopit Sensor Loops; Figure 20: Wiring Multiple D81282Ds Using Molex Connectors; Table 14: Terminal Strip Connections - Bosch D9412G Operations & Installation Manual

D9412G/D7412G | Operation & Installation Guide |

Table 14: Terminal Strip Connections

D8128D D9412G
Common Terminal 23
Out ZONEX 1 = Terminal 27
ZONEX 2 = Terminal 25
In ZONEX 1 = Terminal 28
ZONEX2 = Terminal 26
+12 V Terminal 24
Using Molex Connectors
Each D8128D Module is supplied with a 30 cm (12 in.)
female-to-female Molex cable assembly.
P1 and P2 are Molex connectors that parallel the COM,
IN, OUT, and +12 VDC terminals on the terminal strip.
In installations with multiple D8128Ds, use these
connectors (as opposed to terminals) with the supplied
cable. However, when connecting D8128D Modules
directly to the panel, the terminal strip is easier to use.
The Molex connectors provided are "keyed" (Molex
plug can only fit in one direction). Ensure the connector
is attached correctly: the red wire is on the bottom of P1
(or P2) and the black wire is on the top.
When connecting multiple D8128Ds to a control panel,
you may connect the control panel terminals to P1 or
the COM, IN, OUT, and +12V terminals on the first
D8128D. Then connect P2 of the first D8128D to P1 of
the second D8128D and so on (see Figure 20 ).
Figure 20: Wiring Multiple D8128Ds Using Molex Connectors
1
2
28
27
26
25
24
23
4
1 - D9412G/D7412G Control Panel
2 - Yellow
3 - Green
4 - Black
5 - Red
Bosch Security Systems | 10/03 | 43488E
D7412G
Terminal 9
Terminal 27
Terminal 28
Terminal 3
3
P2
P1
COM IN OUT+12V
6
5
8.0 Off-Board Points
8.4.7

OctoPOPIT Sensor Loops

Only the resistance on the loop limits the number of
normally-open and/or normally-closed detection devices
each sensor loop can supervise. Resistance on each
sensor loop must be less than 100 Ω with the detection
devices connected.
Certain UL and NFPA applications can limit the
number of detection devices. Consult the appropriate
UL or NFPA standards.
The OctoPOPIT detects open, short, closed, normal,
and grounded circuit conditions on its sensor loops and
transmits the conditions to the panel. Each sensor loop
is assigned a point number and transmits to the panel
separately.
Use twisted-pair wire for the OctoPOPIT sensor loops
to avoid EMI problems. Run wires away from the
premises telephone and AC wiring. If you suspect a
noisy environment, use shielded cable.
There are two rows of terminal numbers on the
OctoPOPIT. In the row closest to the terminal blocks,
the positive outputs for the sensor loops are labeled P1
to P8. Sensor loop outputs P1 and P2, P3 and P4, P5
and P6, and P7 and P8 share common terminals. The
common terminals for each pair are labeled COM.
Terminate each OctoPOPIT sensor loop with a 1 kΩ
EOL resistor. Attach a resistor even if you do not enable
the loop. The OctoPOPIT includes a D105BL resistor
for each sensor loop.
Do not duplicate point assignments. Points do not
function properly if assigned to both an OctoPOPIT
sensor loop and a POPIT, two OctoPOPIT sensor
loops, or to two POPITs.
P2
P1
COM IN OUT+12V
7
6 - First D8128D
7 - Second D8128D
8 - Third D8128D
9 - Up to 15 per ZONEX Bus
P2
P1
9
COM IN OUT+12V
8
EN | 47