Emerson VH, DE, VE, DH manual Communications, Nonvolatile Memory, DIP Switches, Control Outputs

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Advanced Microprocessor Controls Setup

3.8.2Nonvolatile Memory

All critical information is stored in nonvolatile memory. Setpoints, setup parameters, and component run hours are kept inside the microcontroller in EEPROM. Information retained for the alarm history is kept in non-volatile RAM.

3.8.3DIP Switches

Equipment options are selected and enabled using DIP switches 1 to 7. These are located at the upper left of the control board and are labeled SW1. Switch 1 is at the top. These switches are factory set and should not require any user changes. The setting and function of the switches can be read from the LCD display and are also described in more detail in 4.8.4 - DIP Switches.

3.8.4Control Outputs

Active control outputs are indicated with LEDs on the lower section of the control board. Each LED is lit if the control output is active (on). The LEDs assist in troubleshooting the system.

Table 6 Control output LEDs

LED

Control Output

 

 

R5

Heat Rejection

 

 

LLSV1

Liquid Line Solenoid Valve 1

 

 

HGBP1

Hot Gas By-Pass or Compressor Unloader Valve

 

 

C1

Compressor 1

 

 

C2

Compressor 2

 

 

RH1

Reheat Stage 1 or Hot Gas Reheat Solenoid

 

 

RH2

Reheat Stage 2

 

 

RH3

Reheat Stage 3

 

 

HUM

Humidifier

 

 

HGBP2

Hot Gas Bypass 2 or Compressor Unloader Valve 2

 

 

FAN

Main Fan

 

 

HMV

Humidifier Make-Up Valve

 

 

LLSV2

Liquid Line Solenoid Valve 2

 

 

3.9Communications

The control system uses a two-wire, RS-422 channel to communicate with remote monitoring systems via Liebert Site Products. This communication, directly out of the control, uses a proprietary protocol. Your unit can have a variety of different Site Product devices wired to this port depending on the monitoring system you are using.

Liebert Site Product Device

SiteScan Centralized Monitoring System—Stand-alone facility monitoring system

SiteLink BMS Interface Module—For Modbus or BACnet communication to a third party moni- toring system

OpenComms Network Interface Card—For Ethernet connection using SNMP protocol

OpenComms D.O. Interface Card—For discrete outputs of status and alarm conditions

Mini-Remote—Stand-alone individual unit remote monitor

ECA2 Communication Adapter—For remote service monitoring directly or via a modem

Consult the user manual of the appropriate device for specific installation and operation information.

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Contents Liebert Deluxe System/3 Page Table of Contents Main Menu AG-Run Diagnostics Alarm Descriptions and Solutions Temperature ControlSystem Testing Figures Page System Description IntroductionChilled Water Systems Glycool Chilled Glycol Cooling SystemsDual Source Cooling Systems Initial START-UP Procedure Additional Considerations for Upflow UnitsAdvanced Microprocessor Controls Setup BasicsDisplay the Main Menu-AM Control Advanced microprocessor AM control menu Main Menu AM-Status/Alarm Data Active AlarmsAlarm History Log Operating StatusMain Menu AM-Setpoints/Setup Setup System SelectionDefault control and alarm setpoints Analog SensorsSetup Operation Setup functions and factory default valuesFunction Default Range Show DIP Switches DIP switch settingsSelect Options Calibrate SensorsSetup Alarms Select Control TypeAlarm default time delay Alarm Default Delay secondsStandard Alarm Messages Analog SetupHumidity Control Method Run Diagnostics Set Status DisplayCalibrate Actuator Show InputsChange Passwords Main Menu AM-Date and TimeTest Outputs Test Control BoardLoad Control Features Main Menu AM-Status DisplayControl Circuit Board DIP Switches CommunicationsNonvolatile Memory Control OutputsMonitor functions View/Change FunctionsAdvanced Microprocessor with Graphics Control Setup Advanced microprocessor with graphics control panelAdvanced microprocessor with graphics AG control menu Main Menu AG-View/Set Alarms Display the Main Menu-AG ControlMain Menu AG-Status Display Default Time Delay Alarm SecondsSet Up Custom Alarms Standard Custom Alarm MessagesSetup Water Detect Floor Plan Installation-LT750 DIP Switch SettingsMain Menu AG-Setup System Main Menu AG-Operating StatusMain Menu AG-View/Set Control Setpoints Cold Start Delay Auto Restart DelayDefault Settings and Ranges IR Flush Overfill infrared humidifiers onlyCalibrate Valve Actuator Select Control AlgorithmMain Menu AG-Run Diagnostics Select Humidity Sensing ModeShow Inputs Dehumidification with Normal or Delayed Reheat Main Menu AG-Date and TimeMain Menu AG-Plot Graphs Main Menu AG-Analog/Digital Inputs Set Up Digital Inputs Main Menu AG-View Run Hours LogRead Digital Inputs View 24 Hour Run Time HistoryControl Circuit Board On/Off Status Time View Only Silence Alarm Temperature Control Response by Control TYPE-ADVANCED Microprocessor ControlsGlycool Cooling Dual Cooling SourceChilled Water Cooling Heating Operation Electric ReheatHumidity Control Hot Water/Steam HeatDehumidification/Humidification Required, in Percent % Control Types Proportional ControlDual Cooling Source Dehumidification Chilled Water DehumidificationHumidification Operation System Activation Suggested System Tuning Procedure Intelligent Control Load Control Features Connecting the Analog Sensors Analog SensorsChanging factory-set sensor inputs Additional connections available after unit deliverySetup Water Detection DisplayPhysical Connections Calibration View/Change Functions Standard Alarms Alarm Descriptions and SolutionsChange Filter Compressor OverloadCustom Alarms Only With Advanced Controls High TemperatureHigh Temperature and Low Temperature Simultaneously Humidifier Problem Infrared HumidifiersLoss of Power Low TemperatureLoss of Air Flow Low HumidityOptional/Custom Alarms System Testing Component Operation and MAINTENANCE, Checks and AdjustmentsEnvironmental Control Functions Proportional Heating/Cooling/ DehumidificationFan Safety Switch Electric PanelControl Transformer and Fuses FirestatFilters Blower PackageFan Impellers and Bearings BeltsRefrigeration System Electronic Variable Speed Drive InverterCompressor Oil Level Suction Pressure Discharge PressureSuction Superheat Thermostatic Expansion Valve OperationAdjustment Hot Gas Bypass Valve OperationOutdoor fan/condenser configuration Air Cooled CondenserAdjustment Johnson Controls/Penn Johnson valves Testing Function of ValveGlycol Solution Maintenance Water/Glycol Cooled Condensers Shell and Tube CondensersCompressor Replacement Mechanical FailureElectrical Failure Compressor Replacement Procedure HumidifierInfrared Humidifier Autoflush Infrared Humidifier Cleaning System Changing Humidifier LampsAutoflush Operation Humidifier lampsSteam Generating Humidifier Steam generating humidifierControls Replacing the CanisterFaults-canister generator humidifier Humidifier canister part numbersPriority Name LED Indication Description Circuit Board Adjustments Steam generating humidifier capacityCapacity Hz Models Lbs/hr kg/hrElectric Reheat Unit Rated Rated Values Voltage CapacityVoltage AMP Set Pt Troubleshooting Blower troubleshootingChilled water troubleshooting Symptom Possible Cause Check or RemedyCompressor and refrigeration system troubleshooting Compressor and refrigeration system troubleshooting Dehumidification troubleshooting Glycol pumps troubleshootingHumidifier-steam generator troubleshooting Adjustments onHumidifier-infrared troubleshooting Reheat troubleshootingMaintenance Inspection CHECKLIST-MONTHLY Maintenance Inspection CHECKLIST-SEMIANNUAL Ne t ItiTi n That

VE, DH, VH, DE specifications

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