Emerson VE, VH, DE, DH manual Chilled Water Systems, Glycool Chilled Glycol Cooling Systems

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Introduction

1.1.3Chilled Water Systems

These systems utilize a central chiller and control cooling by modulating a control valve in the chilled water line.

Cooling

Modulating output water valve

Heating

Three stages of electric reheat standard; steam/hot water optional

Humidification

Infrared standard, steam grid and steam generating optional

Dehumidification

Chilled water valve opens proportionally in response to room needs

1.1.4GLYCOOL™ (Chilled Glycol Cooling) Systems

GLYCOOL™ systems have all of the features of a compressorized water or glycol system, plus a sec- ond cooling coil that is connected into the water circuit. When fluid temperature is sufficiently low (below room temperature), cooling is provided by circulating the fluid through the second cooling coil (with the flow controlled by a motorized valve). This is then the primary cooling source, greatly reduc- ing the compressor operation.

Cooling

Modulated cooling valve opens proportionally to match room needs (primary), two or four stages of mechanical refrigeration (secondary)

Heating

Three stages of electric reheat standard

Humidification

Infrared standard; steam generating optional

Dehumidification

Utilizes the lag compressor

1.1.5Dual Source Cooling Systems

This system has all the features of a compressorized system but adds a second cooling coil that is con- nected to a source of chilled water. This second coil is controlled by a modulating control valve. It is the primary source of cooling and dehumidification so compressor operation is reduced.

Cooling

Second coil opens proportionally in response to the room needs (primary), two or four stages of mechanical refrigeration (secondary)

Heating

Three stages of electric reheat standard

Humidification

Infrared standard; steam generating optional

Dehumidification

Standard Controls use the lag compressor. Advanced Controls use the chilled water valve and then the lag compressor if required by the load.

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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 IntroductionGlycool Chilled Glycol Cooling Systems Chilled Water SystemsDual Source Cooling Systems Initial START-UP Procedure Additional Considerations for Upflow UnitsBasics Advanced Microprocessor Controls SetupDisplay the Main Menu-AM Control Advanced microprocessor AM control menu Alarm History Log Main Menu AM-Status/Alarm DataActive Alarms Operating StatusDefault control and alarm setpoints Main Menu AM-Setpoints/SetupSetup System Selection Analog SensorsSetup functions and factory default values Setup OperationFunction Default Range Select Options Show DIP SwitchesDIP switch settings Calibrate SensorsSetup Alarms Select Control TypeAlarm default time delay Alarm Default Delay secondsAnalog Setup Standard Alarm MessagesHumidity Control Method Calibrate Actuator Run DiagnosticsSet Status Display Show InputsTest Outputs Change PasswordsMain Menu AM-Date and Time Test Control BoardMain Menu AM-Status Display Load Control FeaturesControl Circuit Board Nonvolatile Memory DIP SwitchesCommunications Control OutputsMonitor functions View/Change FunctionsAdvanced Microprocessor with Graphics Control Setup Advanced microprocessor with graphics control panelAdvanced microprocessor with graphics AG control menu Display the Main Menu-AG Control Main Menu AG-View/Set AlarmsMain Menu AG-Status Display Default Time Delay Alarm SecondsSetup Water Detect Floor Plan Set Up Custom AlarmsStandard Custom Alarm Messages Installation-LT750 DIP Switch SettingsMain Menu AG-Operating Status Main Menu AG-Setup SystemMain Menu AG-View/Set Control Setpoints Default Settings and Ranges Cold Start DelayAuto Restart Delay IR Flush Overfill infrared humidifiers onlyCalibrate Valve Actuator Select Control AlgorithmMain Menu AG-Run Diagnostics Select Humidity Sensing ModeShow Inputs Main Menu AG-Date and Time Dehumidification with Normal or Delayed ReheatMain Menu AG-Plot Graphs Main Menu AG-Analog/Digital Inputs Read Digital Inputs Set Up Digital InputsMain Menu AG-View Run Hours Log View 24 Hour Run Time HistoryControl Circuit Board On/Off Status Time View Only Silence Alarm Temperature Control Response by Control TYPE-ADVANCED Microprocessor ControlsChilled Water Cooling Glycool CoolingDual Cooling Source Heating Operation Electric ReheatDehumidification/Humidification Required, in Percent % Humidity ControlHot Water/Steam Heat Control Types Proportional ControlChilled Water Dehumidification Dual Cooling Source DehumidificationHumidification Operation System Activation Suggested System Tuning Procedure Intelligent Control Load Control Features Changing factory-set sensor inputs Connecting the Analog SensorsAnalog Sensors Additional connections available after unit deliveryWater Detection Display SetupPhysical Connections Calibration View/Change Functions Change Filter Standard AlarmsAlarm Descriptions and Solutions Compressor OverloadHigh Temperature and Low Temperature Simultaneously Custom Alarms Only With Advanced ControlsHigh Temperature Humidifier Problem Infrared HumidifiersLoss of Air Flow Loss of PowerLow Temperature Low HumidityOptional/Custom Alarms Environmental Control Functions System TestingComponent Operation and MAINTENANCE, Checks and Adjustments Proportional Heating/Cooling/ DehumidificationControl Transformer and Fuses Fan Safety SwitchElectric Panel FirestatFan Impellers and Bearings FiltersBlower Package BeltsElectronic Variable Speed Drive Inverter Refrigeration SystemCompressor Oil Level Suction Superheat Suction PressureDischarge Pressure Thermostatic Expansion Valve OperationAdjustment Hot Gas Bypass Valve OperationOutdoor fan/condenser configuration Air Cooled CondenserGlycol Solution Maintenance Adjustment Johnson Controls/Penn Johnson valvesTesting Function of Valve Water/Glycol Cooled Condensers Shell and Tube CondensersMechanical Failure Compressor ReplacementElectrical Failure Humidifier Compressor Replacement ProcedureInfrared Humidifier Autoflush Operation Autoflush Infrared Humidifier Cleaning SystemChanging Humidifier Lamps Humidifier lampsSteam Generating Humidifier Steam generating humidifierControls Replacing the CanisterHumidifier canister part numbers Faults-canister generator humidifierPriority Name LED Indication Description Capacity Circuit Board AdjustmentsSteam generating humidifier capacity Hz Models Lbs/hr kg/hrUnit Rated Rated Values Voltage Capacity Electric ReheatVoltage AMP Set Pt Chilled water troubleshooting TroubleshootingBlower 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 Ti n Ne tIti That

VE, DH, VH, DE specifications

Emerson is a well-known brand in the field of automation solutions, offering a range of products that cater to various industries. Among its diverse portfolio, Emerson’s products like DE (Digital Electronics), VH (Variable Frequency Drives), DH (Distributed Control Systems), and VE (Valve Positioners) stand out for their advanced features, cutting-edge technologies, and unique characteristics.

Digital Electronics (DE) from Emerson represents the backbone of modern automation systems. These devices are characterized by their highly reliable digital communication capabilities, providing robust solutions for process monitoring and control. DE products integrate seamlessly with various automation platforms, allowing for easy data exchange and system interoperability. The advanced analytics embedded in these systems enable predictive maintenance strategies, enhancing overall operational efficiency.

Variable Frequency Drives (VH) are integral to motor control technologies, maximizing energy efficiency in various applications. Emerson's VH drives are designed for flexibility, supporting multiple motor types and configurations. These drives utilize pulse width modulation (PWM) technology, allowing for precise speed control and improved application performance. Their built-in protection features help extend motor life, prevent downtime, and reduce maintenance costs. Furthermore, the user-friendly interfaces of VH drives facilitate quick setup and troubleshooting.

Distributed Control Systems (DH) from Emerson provide a holistic approach to managing complex industrial processes. They enable centralized control while ensuring that local operations continue seamlessly. DH systems are characterized by their modular architecture, making them highly scalable and adaptable to changing operational needs. Advanced control algorithms within these systems help optimize processes, ensuring maximum productivity. Additionally, their enhanced cybersecurity features protect critical industrial operations from potential threats.

Emerson's Valve Positioners (VE) play a crucial role in regulating flow and pressure in various processes. These devices provide precise positioning capabilities, enhancing the performance of control valves. The VE systems incorporate smart technologies such as adaptive control and diagnostics, allowing them to self-tune and deliver accurate performance over time. Their compact design and robust build ensure they operate effectively in challenging environments.

In summary, Emerson's DE, VH, DH, and VE offerings embody the latest innovations in automation technology. Their main features, including digital communication, energy efficiency, scalability, and precision control, cater to the diverse demands of modern industries. With these products, Emerson not only enhances operational efficiency but also paves the way for intelligent automation solutions that are crucial for the future of industrial processes.
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