D7212GV2 | Operation and Installation Guide | 3.0 Overview
12 Bosch Security Systems, Inc. | 5/05 | F01U003805B
The system can route groups of Event Reports to four
different destinations. Each report group can be
programmed to send reports to one or more
destinations. Primary and backup reporting paths can
be programmed for each destination and each report
group. A custom option allows specification of
individual Event Reports to be sent.
3.3.8 Keypads
Up to 32 unsupervised keypads can be connected to
the system. The available power, number of supervised
keypads, and number of areas covered affect the total
number of keypads that can be connected.
The system can supervise up to eight keypads. The
control panel sends a Serial Device Trouble Report,
SDI FAILURE in the Modem IIIa
2
format or
TROUBLE ZN D in the BFSK format, if it loses
communication with a supervised keypad.
More than eight keypads can be added, but supervision
of only eight is possible. Table 4 shows the compatible
keypads with the D7212GV2 Control Panel. Refer to
Keypad in the D7212GV2 Program Entry Guide
(P/N: F01U003804) for complete details on
programming keypad options.
Table 4: Compatible Keypads
Model Display Application
D1255 16-character
alphanumeric
Fire/Burglary/Access
D1256 16-character
alphanumeric
Fire
D1257 16-character
alphanumeric
Fire
D1260 4-line by 20-character Fire/Burglary
D720 8 LED Fire/Burglary
3.3.9 Keyswitch
Maintained or momentary closure devices such as
keyswitches allow any of the four available areas to be
armed or disarmed. Point programming determines the
loop responses and which area a keyswitch controls.
3.3.10 Event Memory
The system uses event memory to store events for each
area. A D1255 Keypad or D1260 Keypad assigned to
an area allows viewing of the events for the area. The
control panel clears the events for an area from event
memory and starts storing new events when the area is
master armed.
3.3.11 Event Log
The system stores 500 to 1000 events and event
modifiers from all areas in its event log. Event
modifiers add information about an event to the log.
Some events are always followed by a modifier. For
example, the system adds at least two items to the log
each time an area is armed or disarmed, the open (or
close) event and an event modifier showing the
previous arming state.
All events and their modifiers can be stored even if the
control panel does not send a report for them. The log
can be viewed at a keypad, printed locally using the
D9131A Parallel Printer Interface Module and a
parallel printer, or uploaded using Remote
Programming Software (RPS).
For a list of the log events and event modifiers, refer to
the appendix in the user’s guide for the keypad.
3.3.12 Ground Fault Detection
The Earth Ground Terminal on the control panels is
electrically isolated from all other terminals to allow
the D7212GV2 to detect ground fault conditions. A
Ground Fault Detect Enable switch (S4) is located just
under Terminal 10, Earth Ground, on the control
panel. Refer to Section 4.5.2 Ground Fault Detect Enable
on page 15 for information on operating this function.
3.3.13 Ground Fault Detection Added Feature
When Ground Fault Detect is enabled (S4 closed),
Points 1 to 8 can be used for non-powered fire-
initiating devices such as heat detectors, four-wire
smoke detectors, and pull stations. A D125B Powered
Loop Interface or a D129 Dual Class A Interface
Module is not required when connecting the non-
powered fire-initiating devices to Points 1 to 8.
3.3.14 Programming
Use the Bosch Security Systems D5200 Programmer or
the Remote Programming Software (RPS) to program
the D7212GV2 Control Panel. Refer to the D7212GV2
Program Entry Guide (P/N: F01U003804) for
programming options.
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