Bacharach ADM800 manual AGM300 Connecting Communication Devices, Larger Integrated Systems

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AGM300 - Connecting Communication Devices

Ammonia Display Module (ADM800) Connection

The AGM300 is connected to the ADM800 using a shielded twisted pair instrument cable. The maximum distance between the farthest away AGM300 and ADM800 is 4500 feet.

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

Locate the RS-485 connector in the AGM300 (Page 7). 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

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 PC board. Make the wire run to the ADM800 and connect the twisted shielded pair to the RS-485 TO MONITORS connector using the same color code as used on the AGM300.

Integrating with Building Management Systems

The AGM300 may be connected directly to a Building Management System using a shielded twisted pair cable. The cable from the Building Management System is connected to the RS-485 connector inside the AGM300. MODBUS RTU is the standard communication protocol.

Use any of the remaining service knockouts to gain access to the interior of the monitor. Locate the RS-485 connector 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.

Larger Integrated Systems

You may also connect the AGM300 to a Building Management System through an ADM800. In this case, first connect the AGM300 to the ADM800 as described above. Then, follow the instructions under the heading ADM800 – Communications Connections on Page 26 for information on how to connect the ADM800 to a Building Management System.

RS-485 Connector

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Instruction 3015-4275

Image 18 Contents
AGM300 / ADM800 Ammonia Gas Monitoring System Rev MayInstruction Table of Contents How to Use This Manual IntroductionPlease 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 LEDAGM300 Installation Considerations Locating the MonitorInspection 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 Considerations AGM300 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 SystemsChanging Terminator Settings Personal Computer Refer to AGM300 PC Software SectionOUT Connecting to a Building Management System Multiple AGM’sRS-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 SpecsADM800 Interior Schematic Front Panel ChassisTo Monitors To HostADM800 Electrical Wiring ADM800 AC Input Power and Ground Connections ADM800 Communication Connections AGM300 NetworkIntegration 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 ScreenSetup Parameters Password ProtectionADM800 System Programming ADM800 Setup Programming Setting the ClockClock 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 ChangeNavigating to the 3rd AGM Setup Screen Service TimeoutAGM 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 IntervalRe-Setting the Peak PPM Value Spill LevelEvacuation 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 Working with Alarms Responding To 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 ScreenWorking with System Faults Navigating to the Fault ScreenFault Screen Reset to Factory Default Settings Critical FaultsClearing System Faults Viewing Fault LogFault 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 FusesOptional Accessories Intake ManifoldsMA 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 LSBZone Data Register 0x12xxh R/W 78 bytes Variable Type Length DescriptionGood. 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 Point to current reading Time record for each of the 100 log points. The formatLast 100 log points 2 byes per point Warranty and Service WarrantyService Return Procedure Products Covered under Warranty and Service PolicyField Repair AGM300 Specifications ADM800 Specifications Instruction Headquarters Hunt Valley Circle, New Kensington, PA