Output Wiring (B942/B942W Only); Troubleshooting; Keyswitches; Operation - Bosch B6512 Installation Manual

46 en | Keypads, keyswitches, keyfobs and transmitters
9.1.8

Output wiring (B942/B942W only)

The keypad provides one NO (normally open) output. (It includes NO and C (COMMON)
terminals.) When the output is in an active (energized) state, the NO has continuity with the C
terminal.
9.1.9

Troubleshooting

Keypads show a Call for Service message when they cannot communicate with the control
panel. The most common causes are:
1.
2.
3.
9.2

Keyswitches

You can connect a maintained or momentary contact keyswitch to turn an area All On (armed)
or Off (disarmed). Connect the keyswitch to an on-board or off-board point's sensor loop. You
can program outputs to activate arming status LEDs. Refer to Outputs in RPS Help or in the
Installer Services Portal programming tool (available in Europe, Middle East, Africa, and China)
Help.
9.2.1

Operation

Maintained contact
For points connected to the keyswitch and programmed for a maintained contact, an open on
the sensor loop turns the area All On (armed). The control panel force arms all faulted points,
regardless of the entry in the FA Bypass Max program item. Returning the circuit to normal
turns the area off.
Momentary contact
For points connected to the keyswitch and programmed for a momentary contact, shorting the
arming sensor loop toggles the area's arming state between All On (armed) and Off
(disarmed). The control panel force arms all faulted points, regardless of the entry in the FA
Bypass Max program item.
Refer to Area Parameters and Point Assignments in RPS Help or in the Installer Services Portal
programming tool (available in Europe, Middle East, Africa, and China) Help.
Silence the bell
To silence the bell (stop Alarm Bell output) if the system is On (armed), operate the keyswitch
to turn the area off. 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.
9.2.2

Installation and control panel wiring (keyswitches)

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.
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
on (armed) and a trouble if it is off (disarmed).
2018.07 | 16 | F.01U.287.180
The address switch on the keypad is set to an address that is not programmed in the
control panel. Change the address switch to the proper address, or program the control
panel using RPS, the Installer Services Portal programming tool (available in Europe,
Middle East, Africa, and China) or a different keypad.
If your keypads are not powered from the control panel, the control panel might have lost
power. Confirm the control panel has power.
The wiring from the keypad to the control panel is not correct or has failed. Resolve any
wiring problems.
Installation Manual
Control Panels
Bosch Security Systems, Inc.