Bosch Appliances D7212G manual Power Supply, Primary Power Terminals, Secondary Power Terminals

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D7212G

Power Supply

4.0Power Supply

4.1Primary Power Terminals

4.1.1Primary (AC) Power Circuit

A 16.5 VAC, 40 VA internally fused transformer (Bosch Security Systems D1640) is the primary power source. The AC power circuit provides 1.9 A of rectified AC power. The panel reserves 500 mA of this power for internal operations leaving 1.4 A for powered devices.

Transient suppressors and spark gaps protect the circuit from power surges. This protection relies on the ground connection at Terminal 10. Make sure to connect Terminal 10 to a proper ground. See Section 3.5 Connecting Earth Ground on page 22.

AC Power Failure

The system indicates an AC power failure when the power at Terminals 1 and 2 is missing. The AC Fail Time program item sets the number of minutes or seconds that AC must be missing before the panel acknowledges the failure and the number of minutes or seconds after the power returns before the panel acknowledges the restoral of power. See the D7212G Program Entry Guide (P/N: 4998138538) for additional information regarding AC Fail Time.

4.1.2Installing the Transformer

Do not short the terminals of the transformer: Shorting the terminals opens the internal fuse causing permanent failure. Connect the transformer to Terminals 1 and 2 of the panel before plugging it into the power source.

Use 18 AWG (minimum) wire to connect the transformer to the panel. Wire length should be kept as short as possible. Maximum length is 50 ft. (15 m).

AC wiring can induce both noise and low level voltage into adjacent wiring. Route phone and sensor loop wiring away from any AC conductors, including the transformer wire. Route data wiring away from AC and phone wiring.

Connect the battery and then plug in the transformer: Bosch Security Systems recommends that the battery always be connected first and then the transformer be plugged in. See Section 4.2.2 Installing the Battery on page 26.

Only plug the transformer into an unswitched, 120 VAC, 60 Hz power outlet. Secure the transformer to the outlet with the screw provided.

D8004 Transformer Enclosure required for fire systems: Use the D8004 Transformer Enclosure for the D1640 transformer in fire and combined fire/burglary applications. Check with the Authority Having Jurisdiction (AHJ) on mounting transformers on specific circuits.

4.2Secondary Power Terminals

4.2.1Secondary (DC) Power

A 12 V, 7 Ah (up to 14 Ah) sealed lead-acid rechargeable battery (D126) supplies secondary power for auxiliary and alarm outputs, and powers the system during interruptions in primary (AC) power.

Lead Acid Batteries ONLY: The charging circuit is calibrated for lead-acid batteries. Do not use gel-cell or nicad batteries.

Extra Batteries Increase Back-up Time: To increase battery back-up time, connect a second 12 V, 7 Ah battery in parallel to the first battery to form a 12 V, 14 Ah battery. Use a D122 Dual Battery Harness to ensure proper and safe connection.

D1218 Battery

The D1218 is a 12 V, 17.2 or 18 Ah battery and can be used in applications requiring extended battery standby time. Up to two D1218 batteries may be connected when used with a D122 Dual Battery Harness. Do not use any additional batteries when using a D1218 battery.

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 11.1 10.111.2 11.0 10.013.0 Figures Tables D7212G Operation and Installation Guide OrganizationGuide Organization IntroductionSection Description Appendix DescriptionDocumentation Conventions Related DocumentationType Styles Used in the Text Tips, Notes, Cautions and Warnings FCC RulesPart D7212G Overview New Features D9412G D7412G D7212G9000G Series Panel Differences Secondary SpecificationsTelephone Connections Telephone Line Compatible Accessories Features in D7212GGround Fault Detect IntroductionStandard Features Model Display Application Control/Communicator Assembly Other FeaturesComponents and Literature Available by Separate Order Burglary Listings and ApprovalsListings Beginning the Installation InstallationBefore Beginning Enclosure OptionsConnecting Earth Ground Installing the AssemblyGround Fault Detect Enable Locking the Reset PinCharge the Battery While Finishing Finishing the InstallationInstall and Wire Detection Devices Install Modules and RelaysTesting the System Install the Point Chart LabelProgramming the Panel Primary Power Terminals Power SupplySecondary Power Terminals Replacing the Battery Installing the BatteryBattery Charging Circuit Float Charge Battery SupervisionBattery Discharge/Recharge Schedule Discharge CycleType Charging Status and Low Battery LEDsAction Color StateTotal Available Power Power OutputsAux Power Terminals Continuous Current Draw Programmable Power Outputs TerminalsAvailable Power Relay InstallationFire System Power Formula Verification/Reset RelayTelephone Connections Dialing Format Operation Monitor LED GreenPhone Line Monitor Called Party DisconnectPhone Monitor Select Jumper Ground StartLoop Start Position Ground StartD7212G Description Terminals On-board PointsPoint Sensor Loops Point ParametersBell Point Zonex Bus D7212G Terminals Off-board PointsD8125, D8127 and D9127 Popit Modules Installing the D8125 Popex ModuleExpansion Loops Combined Wiring Data Expansion Loops to Popex ModulesLength in ft. m Popit Sensor LoopsConnecting the D8125 Popex to the D7212G Panel Program Record Sheet Popit Module Point AssignmentsRadxpnts Handler D8128D OctoPOPIT Module Installing the OctoPOPITPopit Labels DescriptionLine Termination Wiring OctoPOPITsAddress Assignment Switches Testing Off-board PointsD8128D Address Switches OctoPOPIT Sensor LoopsConnecting D8128D OctoPOPITs to the D7212G D7212G Off-board Relays Panel Relay D8129 OctoRelay D8129 OctoRelay Switch NumberD8129 OctoRelay D8129 Connections to the D7212G Assigning the command center an address Command Center TerminalsAddress Switch Arming DevicesPower at Command Centers D7212G Command Center Terminal FunctionKeyswitch Operation Maintained Contact Keyswitch10.3 D279A Independent Zone Control Momentary ContactD7212G Printer Switch InstallationSDI Devices 11.3 D9131A Parallel Printer Interface ModuleSDI Address 11.5.2 D9133TTL-E Network Interface Module Address SettingsD7212G Programmer Connector Programmer and Accessory ConnectionsAccessory Connector Programmer Access ReportsProgrammer 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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