Output Wiring (B942/B942W Only); Troubleshooting; Keyswitches - Bosch B5512 Reference Manual

Control Panel
Figure 9.2: Keypad inputs wiring (B921C shown)
Callout ᅳ Description
1 ᅳ Keypad terminal strip
2 ᅳ Sensor loop
3 ᅳ 1 kΩ EOL resistor (P/N: F01U026703)
9.1.11

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.
9.1.12

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 and Point
Assignments in the control panel Program Entry Guide.
Bosch Security Systems, Inc.
1COM2 3COM4
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 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 and System Reference Guide
Keypads, keyswitches, keyfobs and transmitters | en 55
2015.07 | 12 | F.01U.287.180