Installation Manual

4. Pull the necessary wiring through the mounting plate. Refer to Wire to the control panel,
page 56.
5. Install the keypad on the base.
Wire to the control panel
Connect B Series keypads to the SDI2 bus by parallel wire run from the control panel to each
keypad, wire from keypad to keypad, or a combination of the two. For maximum wire lengths,
refer to the SDI2 Bus section of the table in Specifications, page 147 and the installation
instructions for each keypad.
Use a maximum of 7500 ft (2286 m) of 22 AWG (0.8 mm) wire for all devices connected to the
SDI2 bus combined.
1
2
3
R
Y
G
B
7 COM 8
C
OUTPUT
B
1 k End of Line Resistors
Voltage Ranges
ON-BOARD POINTS
3.7 - 5.0 VDC
2.0 - 3.0 VDC
0.0 - 1.3 VDC
Open
Normal
Short
3 COM 4 5 COM 61 COM 2
R Y G B
SDI2
Device Bus
AUX
- 12 V +
TMPR
1 COM 2 7 COM 83 COM 4 5 COM 6
RESET
COM AUX R Y G B
PWR A B COM
B C
OUTPUT
Figure 9.1: Keypad to control panel wiring (B5512 shown)
1
Control panel
2 Keypad
3 Terminal strip wiring
Sensor loops overview and wiring (B921C/B942/B942W only)
The keypad detects three states (Open, Supervised, Short) on its sensor loops and sends the
conditions to the control panel. Each sensor loop has an assigned point number.
Use twisted-pair wire for the module sensor loops to avoid electromagnetic interference
problems. Run wires away from the premises telephone and AC wiring.
To wire detection devices to keypad inputs, connect them to the keypad terminals labeled for
COM, and 1, 2, 3, or 4. Wire resistance on each sensor loop must be less than 100 Ω with the
detection devices connected. The terminal strip supports 12 to 22 AWG (0.65 to 2 mm) wires.
9.1.10
56 en | Keypads, keyswitches, keyfobs and transmitters Control Panel
2016.05 | 14 | F.01U.287.180 Installation and System Reference Guide Bosch Security Systems, Inc.