Bosch D7212GV2 Installationsanleitung PDF herunterladen (Seite 33)

D7212GV2 | Operation and Installation Guide | 9.0 Off-Board Points

Bosch Security Systems, Inc. | 2/07 | F01U003805-02 33

9.0 Off-Board Points

9.1 Point (Zonex) Bus: D7212GV2 Terminals

9.1.1 POPIT Modules

The D7212GV2 can use point of protection input transponder (POPIT) modules to provide a maximum of 32 off-

board points, bringing the total number of points the D7212GV2 can monitor to 40. Each off-board point requires

a POPIT Module.

9.1.2 POPEX Modules

POPITs connect to supervised two-wire data expansion loops run from POPIT to POPIT throughout the

premises. Data expansion loops connect to a D8125 Point of Protection Expander (POPEX) Module. POPEX

Modules have power and data connections to the point bus on the control panel (Table 10).

Table 10: POPEX Modules

Model Power Data

D7212GV2 Terminals 23 and

Terminals 27 and

9.1.3 Missing Conditions

If a programmed POPIT is disconnected from the expansion loop, a missing condition appears immediately and

the event is logged. The missing condition might also be sent to a central station or printed to an on-site printer, if

programmed to do so. Refer to the D7212GV2 Program Entry Guide (P/N: F01U003804) for programming options.

9.1.4 Extra Point Events

Extra Point events are generated when a POPIT connected to the data expansion bus does not have an assigned

Point Index. Table 11 shows when an Extra Point event is or is not generated. Table 12 on page 34 shows

additional error conditions that can occur for the off-board points.

Table 11: Extra Point Events

A POPIT connected to the data

expansion bus does not have an

assigned Point Index and:

Extra Point event? Additional Information

Data expansion bus is disconnected No Keypad does not annunciate or display a trouble condition.

Data expansion bus restores to normal

condition after an open condition

Yes

• Keypad annunciates and displays a trouble condition

• Extra Point is logged and might be programmed to

send reports to the central station or to an on-site

printer.

Point input changes status from normal

to open or shorted

No Keypad does not annunciate or display a trouble condition.

During a Service Walk Test, the point

input changes status from normal to

open or shorted

Yes

∗

• Keypad annunciates and displays a trouble condition

• Extra Point is logged and might be programmed to

send reports to the central station or to an on-site

printer.

∗

The Service Walk Test never shows the electrical state of a point as “Extra.”

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