Bosch Appliances D7212G manual Battery Supervision, Battery Charging Circuit Float Charge

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D7212G

Power Supply

4.2.4Battery Supervision

When the battery voltage drops to 13.8 VDC, the yellow Charging Status LED lights. When the battery drops to 12.1 VDC, the red Low Battery LED lights and the panel, if programmed for power supervision, transmits a BATTERY LOW report in the Bosch Security Systems Modem IIIa2 Communication Format. It transmits a TROUBLE ZN 9 report in the BFSK format.

If the battery is missing or shorted, the red Low Battery LED flashes at the same rate as the green Operation Monitor LED. If the panel is programmed for power supervision, it transmits a BATTERY MISSING report in the Bosch Security Systems Modem IIIa2 Communication Format, or TROUBLE ZN 9 report in the BFSK format.

When battery voltage returns to 13.7 VDC the Low Battery LED goes out. If the panel is programmed for power supervision, it transmits a BATTERY RESTORAL report in the Bosch Security Systems Modem IIIa2 Communication Format or RESTORAL ZN 9 report in the BFSK format. At 13.9 VDC the Charging Status LED goes out.

Investigate low battery reports immediately: If primary (AC) power is off and the discharge continues, the panel becomes inoperative when the battery voltage drops below 10.2 VDC.

4.2.5Battery Charging Circuit Float Charge

The float voltage for the battery charging circuit is 13.5 to 13.9 VDC at a maximum current of 1.4 A. If float voltage drops lower than 13.5 VDC, the Charging Status LED will illuminate.

Loss of AC Load Shed Relay protects battery: During an AC power loss the battery supplies all power to the security system. If the battery voltage falls below 10.2 V during an AC power loss, a “load shed” relay isolates the battery from the panel and disables the panel. Load shed protects the battery from being damaged by deep discharge. When AC power restores, the load shed relay resets and battery voltage is again available.

Overcharge Load Shed With AC Present: If more than 1.4 A of current draw from the panel is detected, the panel shuts down. Remove all loads to the panel and disconnect AC power. Add a new battery and reconnect AC power.

Reset the panel by momentarily placing the reset pin in the disable position. See Figure 4 on page 22. The red Low Battery LED continues to flash until the panel is reset.

A shorted battery condition is created either by a shorted cell inside the battery or by a short on Terminals 4 and 5. A shorted battery may generate WATCHDOG RESET reports.

4.2.6Battery Discharge/Recharge Schedule

 

Discharge Cycle

AC OFF

AC fail report when AC fails if

 

panel is programmed to report

 

AC failure at occurrence.

13.9 VDC

Charging float level.

 

 

13.8 VDC

Charging Status LED on.

 

 

12.1 VDC

Low Battery & AC fail reports if

 

programmed; Low Battery LED

 

on.

10.2 VDC

Battery load shed (processing

 

functions continue if AC is

 

present).

 

 

 

Discharge Cycle

AC ON

Load shed relay resets, battery

 

charging begins, battery trouble

 

and AC restoral reports sent.

13.7 VDC

Battery restoral reports sent, Low

 

Battery LED off.

 

 

13.9 VDC

Charging Status LED off, battery

 

float charged.

Table 7: Battery Discharge/Recharge Schedule

D7212G Operation and Installation Guide

© 2003 Bosch Security Systems

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4998138544C

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Contents Control/Communicator D7212G D7212G Operation and Installation GuideContents 10.1 11.111.2 11.0 10.013.0 Figures Tables D7212G Operation and Installation Guide OrganizationAppendix Description IntroductionGuide Organization Section DescriptionRelated Documentation Documentation ConventionsType Styles Used in the Text FCC Rules Tips, Notes, Cautions and WarningsPart D7212G New Features D9412G D7412G D7212G Overview9000G Series Panel Differences Secondary SpecificationsTelephone Connections Telephone Line Introduction Features in D7212GCompatible Accessories Ground Fault DetectStandard Features Model Display Application Other Features Control/Communicator AssemblyComponents and Literature Available by Separate Order Listings and Approvals BurglaryListings Enclosure Options InstallationBeginning the Installation Before BeginningLocking the Reset Pin Installing the AssemblyConnecting Earth Ground Ground Fault Detect EnableInstall Modules and Relays Finishing the InstallationCharge the Battery While Finishing Install and Wire Detection DevicesInstall the Point Chart Label Testing the SystemProgramming the Panel Power Supply Primary Power TerminalsSecondary Power Terminals Replacing the Battery Installing the BatteryDischarge Cycle Battery SupervisionBattery Charging Circuit Float Charge Battery Discharge/Recharge ScheduleColor State Charging Status and Low Battery LEDsType ActionProgrammable Power Outputs Terminals Power OutputsTotal Available Power Aux Power Terminals Continuous Current DrawVerification/Reset Relay Relay InstallationAvailable Power Fire System Power FormulaTelephone Connections Called Party Disconnect Operation Monitor LED GreenDialing Format Phone Line MonitorPosition Ground Start Ground StartPhone Monitor Select Jumper Loop StartD7212G Point Parameters On-board PointsDescription Terminals Point Sensor LoopsBell Point Zonex Bus D7212G Terminals Off-board PointsD8125, D8127 and D9127 Popit Modules Installing the D8125 Popex ModulePopit Sensor Loops Wiring Data Expansion Loops to Popex ModulesExpansion Loops Combined Length in ft. mConnecting the D8125 Popex to the D7212G Panel Popit Module Point Assignments Program Record SheetRadxpnts Handler Description Installing the OctoPOPITD8128D OctoPOPIT Module Popit LabelsLine Termination Wiring OctoPOPITsOctoPOPIT Sensor Loops Testing Off-board PointsAddress Assignment Switches D8128D Address SwitchesConnecting D8128D OctoPOPITs to the D7212G D7212G Panel Relay D8129 OctoRelay D8129 OctoRelay Switch Number Off-board RelaysD8129 OctoRelay D8129 Connections to the D7212G Arming Devices Command Center TerminalsAssigning the command center an address Address SwitchPower at Command Centers D7212G Command Center Terminal FunctionMomentary Contact KeyswitchKeyswitch Operation Maintained Contact 10.3 D279A Independent Zone ControlD7212G 11.3 D9131A Parallel Printer Interface Module InstallationPrinter Switch SDI DevicesSDI Address 11.5.2 D9133TTL-E Network Interface Module Address SettingsD7212G Programmer Access Reports Programmer and Accessory ConnectionsProgrammer Connector Accessory ConnectorProgrammer and Accessory Connections AccessoryProgramming ConnectorConnector13.1 D7212G Faceplate Faceplate 13.0Faceplate D7212G Control/Communicator, 1 Appendix a System Wiring Diagrams, Issue aD7212G Control/Communicator, 2 D7212G System Wiring Diagram, 2D7212G Control/Communicator, 3 D7212G System Wiring Diagram, 3D7212G Zonex 1, Points 9 to Appendix B Point Address ChartD7212G Index SymbolsZonex
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