Installation Guide - Bosch Security Systems

.D9412GV4/D7412GV4 v2.03 | Installation and System Reference Guide | 9.0 Off-Board PointsFigure 20: Wiring Multiple D8128Ds Using Interconnect Wiring3P2P2P212P1P1P1928272625242345COM IN OUT+12VCOM IN OUT+12V6 78COM IN OUT+12V1 - D9412GV4 Control Panel2 - Yellow3 - Green4 - Black5- Red9.4.7 OctoPOPIT Sensor LoopsOnly the resistance on the loop limits the numberof normally-open or normally-closed detectiondevices each sensor loop can supervise.Resistance on each sensor loop must be less than100 Ω with the detection devices connected.Certain UL and NFPA applications can limit thenumber of detection devices. Consult theappropriate UL or NFPA standards.The OctoPOPIT detects open, short, closed,normal, and grounded circuit conditions on itssensor loops and sends the conditions to thecontrol panel. Each sensor loop has an assignedpoint number and sends signals to the controlpanel separately.Use twisted-pair wire for the OctoPOPIT sensorloops to avoid EMI problems. Run wires awayfrom the premises telephone and AC wiring. Ifyou suspect a noisy environment, use shieldedcable.The OctoPOPIT has two rows of terminalnumbers. In the row nearest to the terminalblocks, the positive outputs for the sensor loopsare labeled P1 to P8. Sensor loop outputs P1 andP2, P3 and P4, P5 and P6, and P7 and P8 sharecommon terminals. The common terminals foreach pair are labeled COM.Terminate each OctoPOPIT sensor loop with a 1kΩ.6 - First D8128D7 - Second D8128D8 - Third 8128D9- Up to 15 per Zonex BusEOL resistor. Attach a resistor even if you do notenable the loop. The OctoPOPIT includes aD105BL resistor for each sensor loop. Refer toFigure 21 on page 56.Do not duplicate point assignments. Points donot function properly if assigned to anOctoPOPIT sensor loop and a POPIT, to twoOctoPOPIT sensor loops, or to two POPITs.Figure 21: D8128D OctoPOPIT Sensor LoopsCOM IN OUT+12V P1 COM P2 P3 COM P4 P5 COM P6 P7 COM P82 31 - D8128D OctoPOPIT2 - To control panel3 - To additional OctoPOPIT sensor loops4 - OctoPOPIT sensor loops5 - 1 k Ω EOL resistor (P/N: P105BL, packageof eight), ICP-1K22AWG-10 (This is a listed10 pack of 1K ohm resistors)514Bosch Security Systems, Inc. | 4/14 | F01U265457-05 56