Installation Instructions

Figure 4.2: B520 earth ground wiring
Callout ᅳ Description
1 ᅳ B520 Auxiliary Power Supply Module
2 ᅳ 14 AWG - 16 AWG (1.8 mm - 1.5 mm) wire
3 ᅳ Ground device (grounding rod or cold water pipe)
Wire to the control panel
When wiring a module to a control panel, use the terminal strip
labeled with PWR, A, B, and COM for SDI2 IN to wire to
corresponding control panel terminals PWR, A, B, and COM.
Use 12 AWG to 22 AWG (2 mm to 0.65 mm) wire.
SDI2 OUT
SDI2 IN
PWR A B COM PWR A B COM
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 4.3: B520 to the control panel wiring (B5512 shown)
Control Panels
Power supply | en 25
Bosch Security Systems, Inc. 2015.09 | 08 | F.01U.287.185