Bosch B9512G - Powered Device and Battery Wiring

42 en | Power supply Control Panels
2016.06 | 08 | F.01U.303.996 Installation and System Reference Guide Bosch Security Systems, Inc.
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.
PWR A B COM
2
4
PWR A B COM
SDI2 OUT
SDI2 IN
PWR A B COM PWR A B COM
1
2
3
SDI2 OUT
SDI2 IN
PWR A B COM PWR A B COM
1
R Y G B
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)