24 en | Power supply Control Panels
2018.07 | 16 | F.01U.287.180 Installation Manual Bosch Security Systems, Inc.
– B5512. 4
– B4512. 2
– B3512. 2
The power supply draws approximately 15 mA (+/- 1 mA) from the control panel.
For detailed instructions, refer to the corresponding document listed in Related
documentation, page 12.
6.3.1 SDI2 address settings
Notice!
The module reads the address switch setting only during module power up. If you change the
setting after you apply power to the module, you must cycle the power to the module in order
for the new setting to take effect.
If multiple B520 modules reside on the same system, each B520 module must have a unique
address.
6.3.2 Supervision
The control panel supervises any B520 on the SDI2 bus.
With any failure to receive an expected response from a B520, all keypads show a system
fault. The control panel sends a module trouble report to the central station (if configured for
module trouble reports).
6.3.3 Auxiliary power supply trouble conditions
Each auxiliary power supply module on the SDI2 bus monitors several conditions including AC
status, battery status, over current status, and a tamper input. Each of these conditions
produces a unique system trouble condition at all keypads. The control panel sends a module
trouble report to the central station (if configured for module trouble reports).
6.3.4 Installation and control panel wiring (B520)
Calculate power consumption
Make sure that there is enough power for the module and the other powered devices that you
want to connect to the system.
Refer to On-board outputs, page 49.
Caution!
Remove all power (AC and battery) before making any connections. Failure to do so might
result in personal injury and/or equipment damage.
Installing the module
1. Set the module address.
2. Insert the plastic mounting clips onto the standoff locations inside the enclosure or on a
mounting skirt, when required.
3. Mount the module onto the plastic mounting clips.
4. Tighten the supplied mounting screws.
Wiring to earth ground
4 To help prevent damage from electrostatic charges or other transient electrical surges,
connect the system to earth ground before making other connections.
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