Emerson DH, VH, DE Electric Reheat, Unit Rated Rated Values Voltage Capacity, Voltage AMP Set Pt

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Component Operation and Maintenance, Checks and Adjustments

Figure 12 Steam generating humidifier control board

Table 20 DIP switch settings for steam generating humidifier

Unit Rated

 

 

 

 

 

Rated Values

 

 

 

 

 

 

 

Voltage

Capacity

SW1

SW2

SW3

SW4

Voltage

AMP Set Pt

 

 

 

 

 

 

 

 

200/208

11

Off

On

Off

On

208

12.6

 

 

 

 

 

 

 

 

200/208

22

On

Off

On

On

208

23.8

 

 

 

 

 

 

 

 

230

11

Off

Off

Off

On

240

10.5

 

 

 

 

 

 

 

 

230

22

Off

Off

On

On

240

20.3

 

 

 

 

 

 

 

 

380/400/415

11

On

On

Off

Off

400

6.3

 

 

 

 

 

 

 

 

380/400/415

22

Off

On

On

On

400

12.6

 

 

 

 

 

 

 

 

460

11

On

Off

Off

Off

480

5.5

 

 

 

 

 

 

 

 

460

22

Off

Off

Off

On

480

10.5

 

 

 

 

 

 

 

 

575*

11

Off

Off

Off

Off

575

4.2

 

 

 

 

 

 

 

 

575*

22

Off

On

Off

On

575

9.8

 

 

 

 

 

 

 

 

*The values are only suitable in models FH600C and FH740C. All other models use a 575 volt to 460 volt step-down transformer and therefore use the 460V settings.

7.6 Electric Reheat

! CAUTION

Reheat element sheaths and fins are manufactured with stainless steel. Regular inspections are necessary to assure proper cleanliness of the reheating element. Should inspection reveal corrosion particles on the reheating element or adjoining surfaces (including ducts and plenums), appropriate cleaning should be performed. Periodic reheating element replacement may be required to meet specific application requirements.

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Contents Liebert Deluxe System/3 Page Table of Contents Main Menu AG-Run Diagnostics Temperature Control Alarm Descriptions and SolutionsSystem Testing Figures Page Introduction System DescriptionDual Source Cooling Systems Chilled Water SystemsGlycool Chilled Glycol Cooling Systems Additional Considerations for Upflow Units Initial START-UP ProcedureDisplay the Main Menu-AM Control Advanced Microprocessor Controls SetupBasics Advanced microprocessor AM control menu Operating Status Main Menu AM-Status/Alarm DataActive Alarms Alarm History LogAnalog Sensors Main Menu AM-Setpoints/SetupSetup System Selection Default control and alarm setpointsFunction Default Range Setup OperationSetup functions and factory default values Calibrate Sensors Show DIP SwitchesDIP switch settings Select OptionsSelect Control Type Setup AlarmsAlarm Default Delay seconds Alarm default time delayHumidity Control Method Standard Alarm MessagesAnalog Setup Show Inputs Run DiagnosticsSet Status Display Calibrate ActuatorTest Control Board Change PasswordsMain Menu AM-Date and Time Test OutputsControl Circuit Board Load Control FeaturesMain Menu AM-Status Display Control Outputs DIP SwitchesCommunications Nonvolatile MemoryView/Change Functions Monitor functionsAdvanced microprocessor with graphics control panel Advanced Microprocessor with Graphics Control SetupAdvanced microprocessor with graphics AG control menu Main Menu AG-Status Display Main Menu AG-View/Set AlarmsDisplay the Main Menu-AG Control Alarm Seconds Default Time DelayInstallation-LT750 DIP Switch Settings Set Up Custom AlarmsStandard Custom Alarm Messages Setup Water Detect Floor PlanMain Menu AG-View/Set Control Setpoints Main Menu AG-Setup SystemMain Menu AG-Operating Status IR Flush Overfill infrared humidifiers only Cold Start DelayAuto Restart Delay Default Settings and RangesSelect Control Algorithm Calibrate Valve ActuatorSelect Humidity Sensing Mode Main Menu AG-Run DiagnosticsShow Inputs Main Menu AG-Plot Graphs Dehumidification with Normal or Delayed ReheatMain Menu AG-Date and Time Main Menu AG-Analog/Digital Inputs View 24 Hour Run Time History Set Up Digital InputsMain Menu AG-View Run Hours Log Read Digital InputsControl Circuit Board On/Off Status Time View Only Silence Alarm Response by Control TYPE-ADVANCED Microprocessor Controls Temperature ControlHeating Operation Electric Reheat Glycool CoolingDual Cooling Source Chilled Water CoolingControl Types Proportional Control Humidity ControlHot Water/Steam Heat Dehumidification/Humidification Required, in Percent %Humidification Operation System Activation Dual Cooling Source DehumidificationChilled Water Dehumidification Suggested System Tuning Procedure Intelligent Control Load Control Features Additional connections available after unit delivery Connecting the Analog SensorsAnalog Sensors Changing factory-set sensor inputsPhysical Connections SetupWater Detection Display Calibration View/Change Functions Compressor Overload Standard AlarmsAlarm Descriptions and Solutions Change FilterHumidifier Problem Infrared Humidifiers Custom Alarms Only With Advanced ControlsHigh Temperature High Temperature and Low Temperature SimultaneouslyLow Humidity Loss of PowerLow Temperature Loss of Air FlowOptional/Custom Alarms Proportional Heating/Cooling/ Dehumidification System TestingComponent Operation and MAINTENANCE, Checks and Adjustments Environmental Control FunctionsFirestat Fan Safety SwitchElectric Panel Control Transformer and FusesBelts FiltersBlower Package Fan Impellers and BearingsCompressor Oil Level Refrigeration SystemElectronic Variable Speed Drive Inverter Thermostatic Expansion Valve Operation Suction PressureDischarge Pressure Suction SuperheatHot Gas Bypass Valve Operation AdjustmentAir Cooled Condenser Outdoor fan/condenser configurationWater/Glycol Cooled Condensers Shell and Tube Condensers Adjustment Johnson Controls/Penn Johnson valvesTesting Function of Valve Glycol Solution MaintenanceElectrical Failure Compressor ReplacementMechanical Failure Infrared Humidifier Compressor Replacement ProcedureHumidifier Humidifier lamps Autoflush Infrared Humidifier Cleaning SystemChanging Humidifier Lamps Autoflush OperationSteam generating humidifier Steam Generating HumidifierReplacing the Canister ControlsPriority Name LED Indication Description Faults-canister generator humidifierHumidifier canister part numbers Hz Models Lbs/hr kg/hr Circuit Board AdjustmentsSteam generating humidifier capacity CapacityVoltage AMP Set Pt Electric ReheatUnit Rated Rated Values Voltage Capacity Symptom Possible Cause Check or Remedy TroubleshootingBlower troubleshooting Chilled water troubleshootingCompressor and refrigeration system troubleshooting Compressor and refrigeration system troubleshooting Glycol pumps troubleshooting Dehumidification troubleshootingAdjustments on Humidifier-steam generator troubleshootingReheat troubleshooting Humidifier-infrared troubleshootingMaintenance Inspection CHECKLIST-MONTHLY Maintenance Inspection CHECKLIST-SEMIANNUAL That Ne tIti Ti n

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.