D9412GV4/D7412GV4/D7212GV4 | Installation and Operation Guide | 11.0 Arming Devices
Bosch Security Systems, Inc. | 3/12 | F01U266054-01 64
Figure 25: External Power to SDI Devices
1
2
2
3
3
4
4
5
1 - To control panel
2 - +12.0 VDC
3 - Data
4 - Common
5 - D8132 or external power supply
11.3 D279A Independent Zone Control
Any point can be programmed so that the D279A
Independent Zone Control operates as independent
point control (arming and disarming the point).
Refer to Point Assignments in the
D9412GV4/D7412GV4/D7212GV4 Program Entry
Guide (P/N: F01U218312) for programming
information. Refer to the D279A Operation and
Installation Instructions (P/N: 46458) for wiring and
operation instructions
.
11.4 Keyswitch
11.4.1 Description
A maintained or momentary contact arming station
(keyswitch) can be connected to master arm or
disarm any of the areas in the system. The keyswitch
is connected to an on-board or off-board point’s
sensor loop. Relays can be programmed to activate
arming status LEDs for keyswitch arming stations.
Refer to Relays in the
D9412GV4/D7412GV4/D7212GV4 Program Entry
Guide (P/N: F01U218312).
11.4.2 Programming
Refer to Point Assignments in the
D9412GV4/D7412GV4/D7212GV4 Program Entry
Guide (P/N: F01U218312) for the correct
programming for points used for keyswitches.
11.4.3 Installation
For maintained switches, connect the EOL resistor
for the point at the keyswitch so that the switch
opens the circuit when it operates. A short on the
circuit produces an alarm if the area is armed and a
trouble if it is disarmed. Refer to Figure 26 on
page 65.
For momentary keyswitches, connect the EOL
resistor at the keyswitch point so that when the
keyswitch operates, it shorts the resistor. An open
on the circuit causes an alarm if the area is armed
and a trouble if it is disarmed. Refer to Figure 26 on
page 65.
11.4.4 Operation
Maintained Contact
If the point to which the keyswitch is connected is
programmed for a maintained contact, an open on
the arming circuit arms the area. All faulted points
are force armed, regardless of the entry in the FA
Bypass Max program item. Returning the circuit to
normal disarms the area. Refer to Area Parameters
and Point Assignments in the
D9412GV4/D7412GV4/D7212GV4 Program Entry
Guide (P/N: F01U218312).
Momentary Contact
If the point to which the keyswitch is connected is
programmed for a momentary contact, shorting the
arming circuit toggles the area’s arming state
between armed and disarmed. All faulted points are
force armed, regardless of the entry in the FA
Bypass Max program item. Refer to Point
Assignments in the D9412GV4/D7412GV4/D7212GV4
Program Entry Guide (P/N: F01U218312).
Silencing the Bell
To silence the bell (stop Alarm Bell output) if the system
is armed, position the keyswitch to disarm the area. If the
area is disarmed, turn the keyswitch once to start the
arming process. Turning the keyswitch a second time
stops the arming process and silences the bell.
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