Bosch Appliances D7412GV3, D9412GV3 manual 9.5Testing Off-BoardPoints, 9.4.7OctoPOPIT Sensor Loops

D9412GV3/D7412GV3 Operation and Installation Guide 9.0 Off-Board Points

9.4.7OctoPOPIT Sensor Loops

Only the resistance on the loop limits the number of normally-open 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 sends the conditions to the control panel. Each sensor loop has an assigned point number and sends signals to the control 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.

The OctoPOPIT has two rows of terminal numbers. In the row nearest 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. Refer to Figure 23 on page 49.

Do not duplicate point assignments. Points do not function properly if assigned to an OctoPOPIT sensor loop and a POPIT, to two OctoPOPIT sensor loops, or to two POPITs.

Figure 23: D8128D OctoPOPIT Sensor Loops
			1
	COM IN OUT+12V P1 COM P2	P3 COM P4	P5 COM P6	P7 COM P8
	2	3
			4
		5
1 -	D8128D OctoPOPIT
2 - To control panel
3 - To additional OctoPOPIT sensor loops
4 - OctoPOPIT sensor loops
5 - 1 kΩ EOL resistor (P/N: P105BL, package of
	eight)

9.5Testing Off-Board Points

Use the Service Walk Test to test off-board points. Test to ensure that all off-board points operate properly.

Walk Test and Service Walk Test Do Not Show Extra Points: If the point assignment switches on a POPIT or OctoPOPIT are set incorrectly, missing and extra points can occur. If the same point number is assigned to two or more POPITs or OctoPOPITs, none of the points with that number test correctly. Refer to Section 9.1 Point (Zonex) Bus: D9412GV3 Terminals and D7412GV3 Terminals on page 36.

Bosch Security Systems, Inc. 10/10 F01U143070-03 49