D7212G
Off-board Points
8.0
8.1Point (ZONEX) Bus D7212G Terminals 
The D7212G can use POPIT (Point of Protection Input Transponder) Modules to provide up to 32
POPITs connect to supervised
If a programmed POPIT is disconnected from the expansion loop, a missing condition appears immediately and the event is logged. The missing condition may also be transmitted to a central station or printed to an
Extra Point events are generated when a POPIT is connected to the data expansion bus but does not have a Point Index assigned to it. Shown below are instances when an EXTRA POINT event will or will not be generated.
If a POPIT is connected to the data expansion bus but does not have a Point Index assigned to it and…
·the data expansion bus becomes disconnected, no trouble condition is annunciated or displayed at command centers and the EXTRA POINT event will not be generated. (However, POPIT’s that are programmed with a Point Index will immediately go missing.)
·the data expansion bus restores to a normal condition from an open, a trouble condition will annunciate and display at the command center. In addition, an EXTRA POINT event is generated, logged, and may be programmed to be sent to the central station or printed to an
·the point input goes from an electrically normal state to an open or shorted state, the command center will neither annunciate nor display a trouble condition. No EXTRA POINT event will be generated.
·the system is presently in a Service Walk Test and the point input goes from an electrically normal state to an open or shorted state, the command center will neither annunciate nor display a trouble condition. However, an EXTRA POINT event will be logged and printed to an
If the positive or negative leg of the data expansion bus is shorted to earth ground and Ground Fault Detect is enabled, a general GROUND FAULT event is generated.
If the positive or negative leg of the data expansion bus becomes disconnected then all POPIT’s beyond the break will report as a missing condition.
If the data expansion bus becomes shorted then all POPIT’s will report a missing condition and a PT BUS TROUBLE event is generated. When the data expansion bus restores from a shorted condition, a PT BUS RESTORE event is generated and if there are POPIT’s connected to the data expansion bus without a Point Index assigned to it, then an EXTRA POINT event will be generated.
If the positive or negative leg of the data expansion bus becomes shorted to a Common terminal on the D7212G then all POPIT’s will report a missing condition. In addition to this, a PT BUS TROUBLE event will also be generated.
If Terminal 28 becomes shorted to a Common terminal, a PT BUS TROUBLE event will not be generated. However, a short between Terminal 27 and a Common terminal will generate a PT BUS TROUBLE event and the command center will display SERVC ZONEX 1. If Terminal 27 and Terminal 28 are shorted together, a PT BUS TROUBLE event is generated and the command center will display SERVC ZONEX 1.
The D7212G will respond to missing point conditions based on how the points are programmed and which armed state the area is in that the point is assigned to. For example, if an interior motion detector point went missing during a disarmed state, a MISSING TROUBLE event would be generated. However, if the point went missing while the area was Master Armed, a MISSING ALARM event would be generated.
D7212G Operation and Installation Guide
© 2003 Bosch Security Systems | Page 37 | 4998138544C |
