Bacharach manual ADM800 Communication Connections, AGM300 Network

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ADM800 - Communication Connections

AGM300 Network

The ADM800 Ammonia Display Module is connected to the AGM300 network using a shielded twisted pair cable. The maximum distance between the ADM800 and the farthest AGM300 is 4500 feet.

Use any of the remaining service knockouts to gain access to the interior of the ADM800. The RS-485 communication wiring between the ADM800 and AGM300 must be connected in the following manner:

Locate the RS-485 connector marked “TO MONITORS” in the ADM800 (Page 23). This connector is located on the far-left bottom of the ADM800 circuit board. Connect one lead of a twisted shielded pair to the “B” connection point (the far left point), note the wire color. Connect the second wire to the “A” connection point (the middle), note the wire color. Connect the ground to the “GND” connection point.

Make the wire run to the AGM300 and connect the twisted shielded pair to the AGM300 RS-485 connector (Page 7) using the same color code as used on the ADM800.

Integration with Building Management System

A second RS-485 connector inside the ADM800 allows a Building Management System to “talk” to the AGM300 network through the ADM800. The connection is established using a shielded twisted pair cable.

Use any of the remaining service knockouts to gain access to the interior of the ADM800. Locate the RS-485 connector marked “TO HOST” (Page 23) and remove it from the circuit board. Secure the wire leads to the connector orienting them as shown in the diagram below. Check to make sure that the polarity matches the wiring to the Building Management System. When you are through securing the connections, carefully plug the connector back onto the circuit board.

RS-485 Connector

26	Instruction 3015-4275

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Contents

AGM300 / ADM800 Ammonia Gas Monitoring System Rev MayInstruction Table of Contents Introduction How to Use This ManualPlease Read this Manual Carefully Before Use Safety Precautions Cleaning Hazard Symbols on MonitorInstallation Category Altitude LimitCommunication Options Functional OverviewGeneral Description Suggested Location of Sampling PointsChiller Machine RoomStandard Accessories for a 4 Point System LEDLocating the Monitor AGM300 Installation ConsiderationsInspection Screw Locations InstallationAGM300 Mounting Instructions AGM300 Mounting SpecsAGM300 Side View AGM300 Connecting Air LinesOverview Inlet / Purge PortsConnecting Sample Intake Lines Connecting Purge LineConnecting Exhaust Line Tubing ConsiderationsAGM300 Interior Schematic ON/OFF Do not Apply PowerSwitches / Fuses / OUTAGM300 Electrical Wiring VAC InstallationAGM300 AC Input Power and Ground Connections Ammonia Display Module ADM800 Connection AGM300 Connecting Communication DevicesRS-485 Connector Integrating with Building Management SystemsPersonal Computer Refer to AGM300 PC Software Section Changing Terminator SettingsOUT Multiple AGM’s Connecting to a Building Management SystemRS-485 Connections Between AGM300’s Multiple AGM300’s Connected to a Building Management System Programming the AGM300 Using PC SoftwareAGM300 PC Software Unit Node Terminator Outout Building Management SystemTo Send a Saved Program to an AGM300 Saving the AGM300 Program to a Disk or DriveTo Open a Saved Program Trend DataUSB Type Laptops Sealevel SYSTEMS, INCOptional 4-20 mAdc Outputs Current Loop ConnectorAGM300 Current Loop Interfaces ConnectionAGM300 Connecting External Alarms AGM300 Relay ConnectorLeak Spill Evacuate Fault Typical AGM300 Relay 1 and Relay 2 WiringADM800 Installation ADM800 Oblique PhotoADM800 Installation Considerations ADM800 Mounting Instructions ADM800 Mounting Specs ADM800 Interior Schematic Front Panel ChassisTo Monitors To HostADM800 Electrical Wiring ADM800 AC Input Power and Ground Connections AGM300 Network ADM800 Communication ConnectionsIntegration with Building Management System Changing Terminator Switch Settings To MonitorADM800 Connecting External Alarms ADM800 Relay ConnectorADM800 Exterior Schematic ADM800 OperationADM800 Overview ADM800 Screen Displays System ScreenPassword Protection Setup ParametersADM800 System Programming Setting the Clock ADM800 Setup ProgrammingClock Setup Screen Number of AGM Units Navigating to the 1st ADM Setup ScreenContrast AGM Baud RateEnabling Building Management System Connection Audible AlarmPassword Building Management System Stop BitsADM Setup Screen #2 Navigating to the 2nd ADM Setup ScreenSetting Relay Parameters AGM Node AddressScreen #1 AGM Setup Screen #1 AGM300 Setup ProgrammingNavigating to the 1st and then 2nd AGM Setup Screen AGM Setup Screen #2Location Number of Zones InstalledAlarm Ack Mode Zone Hold TimeAuto Re-Zero ModeLoop 2 Factor Zone ChangeService Timeout Navigating to the 3rd AGM Setup ScreenAGM Setup #3 Screen Zone Setup Screen #1 ADM800 Zone Setup ProgrammingNavigating to the 1st Zone Setup Screen DistanceCurrent PPM Average TemperatureNavigating To the 2nd Zone Setup Screen Log IntervalSpill Level Re-Setting the Peak PPM ValueEvacuation Level Working with the Zone Screen General OperationFunctional Overview Zone ScreenZone Screen Hold Mode Zone Screen Alarm ModeFault Conditions System Screen Alarm Mode Working with the System ScreenAGM Setup #1 Screen Alarm Log ScreenSystem Screen Fault Mode Responding To Alarms Working with AlarmsAlarm Summary Screen Alarm Detail Screen Alarm Detail ScreenAcknowledging Alarms Alarm Summary Screen Acknowledge ModeNavigating To the Trend Screen Working with the Trend ScreenOverview Log Interval Trend ScreenNavigating to the Fault Screen Working with System FaultsFault Screen Reset to Factory Default Settings Critical FaultsViewing Fault Log Clearing System FaultsFault Log Screen Navigating to the Calibration Screen Adjusting Calibration FactorWorking with the Calibration Screen Calibration ScreenCalibration Procedure Diagnostic Screen Overview Working with the Diagnostic ScreenNavigating to the Diagnostic Screen Diagnostic ScreenInstruction Service Mode System Screen Service ModeInstruction Appendix Servicing Air Lines AGM300 / ADM800 MaintenanceServicing Inline Filter Replacing FusesIntake Manifolds Optional AccessoriesMA Interface Board ADM800 Logic Diagram RS-485 Communication Protocol Modbus RTU ProtocolAGM300 Modbus RTU Operation Protocol DetailsModbus Mode RTU only Key Comm Protocol ParametersRegister Name Number Type Description Summary of RegistersData Type Abbreviations TIMUnused REVUnused TIM Minutes RS-485BAUDMSB Service mode register to change this parameterMode. do not Modify use zone hold register or LSBVariable Type Length Description Zone Data Register 0x12xxh R/W 78 bytesGood. do not Modify Instruction Instruction Stpppm To Release the Zone Hold Use the Following Sequence of Steps Fault Log Register Register 0x1900, 0x1901h Bytes Instruction Time record for each of the 100 log points. The format Point to current readingLast 100 log points 2 byes per point Warranty Warranty and ServiceService Products Covered under Warranty and Service Policy Return ProcedureField Repair AGM300 Specifications ADM800 Specifications Instruction Headquarters Hunt Valley Circle, New Kensington, PA