Bosch Appliances D9112 Wiring Data Expansion Loops to Popex Modules, Popit Sensor Loops

SWITCHES 1 TO 6

D8125

POPEX

MODULE POINTS 9 - 71

(-)

(-)

(+)

(+)

GND

OUT

IN

AUX

D8127

POPIT

DATA	33K Ω E.O.L. DATA
(-)(+) LOOP	RESISITOR	(-)(+) LOOP

NEGATIVE (-)

POSITIVE (+)

DATA EXPANSION LOOP

DATA (-)(+) LOOP

DATA (-)(+) LOOP

UP TO 63 POPITS

SWITCHES 1 TO 6

D8125

POPEX

MODULE POINTS 73 - 135

(-)

(-)

(+)

(+)

GND

OUT

IN

AUX

DATA	33K Ω E.O.L. DATA
(-)(+) LOOP	RESISITOR	(-)(+) LOOP

NEGATIVE (-)

POSITIVE (+)

DATA EXPANSION LOOP

DATA (-)(+) LOOP

DATA (-)(+) LOOP

UP TO 63 POPITS

Figure 13: Typical Expansion Loop/POPIT Configuration

Wiring Data Expansion Loops to POPEX Modules

There are two positive (+) and two negative (-) data expansion loop terminals on each POPEX module. Follow the procedure below to connect the data expansion loops to the D8125 POPEX Module. See Figure 13. Remember, you can only connect a maximum of 63 POPITs to one D8125.

1.Connect the positive (+) Data terminal from the first POPIT on the data expansion loop to one of the D8125 module’s positive (+) terminals.

2.Connect the negative (-) Data terminal from the first POPIT on the data expansion loop to one of the D8125 module’s negative (-) terminals.

POPIT Sensor Loops

The number of normally-open and/or normally-closed detection devices each sensor loop can supervise is limited only by the resistance on the loop. Resistance on each sensor loop must be less than 100 ý with the detection devices connected.

Certain UL and NFPA applications may limit the number of detection devices. Consult the appropriate UL or NFPA standards.

POPITs detect open, shorted, normal, and grounded circuit conditions on their sensor loops. They transmit the condition of their loops to the D9112. A ground on the sensor loop reports as a open condition. Each POPIT is programmed and transmits to the D9112 separately.

Terminate each POPIT sensor loop with the 33k ý end-of-line resistor (Radionics D106F) included with each POPIT.

Radionics recommends you use twisted-pair wire in all POPEX/POPIT installations for both the data expansion loop wiring and the POPIT sensor loops. Run wires away from AC sources to prevent AC induction. If you suspect a noisy environment, use shielded cable. See Premises Wiring in the Installation section.

	D9112	Operation & Installation Manual
			© 1993 Radionics
74-06144-000-C 2/96		Page 39