Bosch D1257 Installation Guide download pdf (Page 47)

D7212GV3 | Operation and Installation Guide | 11.0 Arming Devices

Bosch Security Systems, Inc. | 10/10 | F01U143079-03 47

11.3 D279A Independent Zone Control

Any on-board or OctoPOPIT 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 D7212GV3

Program Entry Guide (P/N: F01U170808) 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 D7212GV3 Program Entry

Guide (P/N: F01U170808)

11.4.2 Programming

Refer to Point Assignments in the D7212GV3

Program Entry Guide (P/N: F01U170808) 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 21.

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 21.

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 D7212 Program Entry Guide

(P/N: F01U170808)

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

D7212GV3 Program Entry Guide (P/N: F01U170808).

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.

Figure 21: Keyswitch Wiring

1 - Maintained keyswitch

2 - Momentary keyswitch

3 - Common

4 - Point input

5 - 1 k

or 33 k

resistor

∗

6- Open on a circuit arms the area

7 - Short on a circuit toggles the arming state

∗

Use 1 k

EOL resistors if using one of the zones on the control panel or an OctoPOPIT. Use a 33 k

resistor if using a POPIT.

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