Powered Device And Battery Wiring - Bosch B9512G Installation And System Reference Manual

42 en | Power supply
Figure 6.3: 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 27 through 30 (or 23
through 26 if configured for SDI2).
Use 12 AWG to 22 AWG (2 mm to 0.65 mm) wire.
6.3.5

Powered device and battery wiring

Wire to SDI2 powered devices
When wiring the output of a B520 to a SDI2 module, you can use either the SDI2 OUT terminal
strip labeled with PWR, A, B, and COM to wire to terminals labeled PWR, A, B, and COM on
the next module, or you can use the interconnect cable (included). Wiring the output of a
B520 to a SDI2 device provides power to the device while passing through data between the
control panel and the device.
Figure 6.4: B520 to powered devices - terminal strip or interconnect wiring connector
Callout ᅳ Description
1 ᅳ B520 Auxiliary Power Supply Module
2 ᅳ Powered device (SDI2 module)
2016.06 | 08 | F.01U.303.996
1
PWR A B COM
R Y G B
2
PWR A B COM
Installation and System Reference Guide
PWR A B COM
3
2
Control Panels
1
PWR A B COM
PWR A B COM
Bosch Security Systems, Inc.
PWR A B COM
4