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Liebert TM-10098 service manual Stage Compressorized Cooling – With Dead Band

Models: TM-10098

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2 Stage Compressorized Cooling – With Dead Band

iCOM Control Training and Service Manual

2 Stage Compressorized Cooling – With Dead Band

Temp Set Point + (1/2 Dead Band + 1/2 Proportional Band)
Temp Set Point: 70°F
Proportional Band: 8°F
Dead Band: 2°F			Cool 1 On		Cool 2 On
					Cool 2 On

70	71	72	73	74	75
DB
	Cool 1 Off		Cool 2 Off
			Increasing Temperature

Note: in the above example that the control band begins at the 70°F temperature set point and has a length of 5°F, which is ½ of the programmed temperature dead band value plus ½ of the programmed temperature proportional band value.

As the return air temperature increases Cooling 1 (lead compressor) is activated at 73°F or ½ of the dead band value plus 50% of the cooling control band. If the return air temperature continues to increase Cooling 2 (lag compressor) will activate at 75°F or ½ of the dead band value plus 100% of the cooling control band.

When the return air temperature starts to decrease, Cooling 2 (lag compressor) is deactivated at 73°F or ½ of the dead band value plus 50% of the cooling control band and Cooling 1 (lead compressor) is deactivated at 71°F or ½ of the dead band value plus 0% of the cooling control band.

Remember the temperature dead band value is used by the control to shift the cooling on/ off operations away from the temperature set point.

Optional 4 - Stage Cooling, Two (2) Compressors with Unloaders

The basic temperature cooling control band is established at the temperature set point with the length equal to ½ of the programmed temperature proportional band divided by the number of cooling stages.

The Liebert DS units are supplied with two (2) compressors, each compressor is rated at ½ of the unit capacity. Each compressor will be the semi-hermetic type

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Liebert TM-10098 service manual Stage Compressorized Cooling – With Dead Band, iCOM Control Training and Service Manual

Contents

Large Systems Environmental Training and Service ManualTM-10098:Rev. 02/06 iCOM MicroprocessoriCOM Training & Service ManualiCOM Control Training and Service Manual Page iCOM Control Training and Service Manual Table of ContentsChapter 1 Temperature/ Humidity Control Chapter 3: iCOM Hardware Connections Chapter 4: General Troubleshooting DataChapter 2: Programming Functions iCOM Controls Training and Service ManualGlossary of Terms How To Use The SchematicsElectrical Schematics Computer and Network TermsCooling and/ or Heating Required, in Percent % Chapter Temperature and Humidity Control ProgramsTemperature Control Program Types iCOM Controls Training and Service ManualKnowledge Base/Decision Making iCOM Control Training and Service ManualMembership ConsequenceProportional + Integral PI Control iCOM Controls Training and Service ManualProportional P Control iCOM Control Training and Service Manual Proportional + Integral + Derivative PID ControliCOM Controls Training and Service Manual A suggested tuning procedure is as followsiCOM Control Training and Service Manual Temperature ControlOperations and Charts 2 Stage Compressorized Cooling – No Dead Band Temp Set Point + 1/2 Proportional BandiCOM Control Training and Service Manual 2 Stage Compressorized Cooling – With Dead BandSTAGECOMPRESSORS, UNLOADER STATE 4 Stage Compressorized Cooling – No Dead Band Temp Set Point + 1/2 Proportional Band4 Stage Compressorized Cooling – With Dead Band iCOM Controls Training and Service ManualSTAGE TEMPERATURE iCOM Control Training and Service Manual As the return air temperature increases Cooling 1, lead compressor unloaded, is activated at 72F or ½ of the dead band value plus 25% of the cooling control band. If the return air temperature continues to increase Cooling 2, lag compressor unloaded, will activate at 73F or ½ of the dead band value plus 50% of the cooling control band. If the return air temperature continues to increase Cooling 3, lead compressor unloaded, is activated at 74F or ½ of the dead band value plus 75% of the cooling control band. If the return air temperature continues to increase Cooling 4, lag compressor loaded, will activate at 75F or ½ of the dead band value plus 100% of the cooling control bandSwitch 1st compressor ON iCOM Controls Training and Service Manual1 compressor operation Switch 2nd compressor ONiCOM Control Training and Service Manual Glycool at 100% Capacity – No Dead BandDual Source Cooling iCOM Controls Training and Service ManualGlycool at 50% Capacity – No Dead Band Dual Cooling at 100% Capacity – No Dead Band Staged Electric ReheatTemp Set Point - 1/2 Proportional Band iCOM Controls Training and Service Manual3 Stage Electric Reheat – No Dead Band 3 Stage Electric Reheat - With Dead Band iCOM Controls Training and Service Manual Humidity ControlHumidity Control Program Types Humidity iCOM Control Training and Service ManualHumidity ProportionaliCOM Controls Training and Service Manual Operations and ChartsHumidifier Operation Relative Humidity ControlHumidity Set Point - 1/2 Proportional Band iCOM Control Training and Service ManualInfrared Humidification – No Dead Band iCOM Controls Training and Service Manual Infrared Humidification – With Dead BandiCOM Control Training and Service Manual Autoflush Control Flow ChartDehumidification Operation Humid Set Point: 50% iCOM Controls Training and Service Manual Humidity Set Point + 1/2 Proportional BandReheating during Dehumidification ParameterOperation iCOM Controls Training and Service ManualNo Normal Delayed Auto restart Additional ProgramsStart iCOM Control Training and Service ManualSuction Pressure Transducer Fan Alarm / Fan settingsHigh Pressure Cutout Call for CoolingiCOM Control Training and Service Manual The Startup and Freeze Protection ProgramCalculation of next Maintenance Parameters Next Maintenance CalculationiCOM Controls Training and Service Manual The Maintenance Calculation is done as followsiCOM Control Training and Service Manual Parameters for next Maintenance CalculationGeneral Maintenance Settings Shared Parameters an understanding iCOM Control Training and Service Manual Networking and FunctionsUnderstanding the iCOM Network setup process iCOM Controls Training and Service Manual The Basics for HardwareThe Basics for Cooling Unit Placement The Basic for ProgrammingiCOM Control Training and Service Manual Example: Display: Example: Control Board:Unit No. Setting ParametersiCOM Controls Training and Service Manual Unit No.Switch iCOM Control Training and Service ManualPower Unit No.iCOM Controls Training and Service Manual U2U:SwitciCOM Control Training and Service Manual Line S802: Number units connected: xx 01 -Teamwork Modes TeamworkiCOM Controls Training and Service Manual “No” TeamworkTeamwork Mode Unit Lead/ Lag or Running/ Standby FunctioniCOM Control Training and Service Manual Typical Lead/ Lag Running/ Standby FunctioniCOM Controls Training and Service Manual Standby & CascadeNotes iCOM Control Training and Service ManualSmall Graphic Display with Panel Mount Bezel ChapterProgramming Functions Optional Large Graphic Display with PaneliCOM Control Training and Service Manual iCOM Display Components and FunctionsiCOM Keyboard Layout Icon iCOM Controls Training and Service ManualiCOM Keyboard Layout Key NameiCOM Display Symbols/ Icons iCOM Control Training and Service ManualProgramming Functions Status DisplayLevel 2: Service Menu Screens ICON Symbols Menu Parameters NamesiCOM Control Training and Service Manual Level 1: UserIcon User Menu Icons and DescriptionsiCOM Controls Training and Service Manual NameService Menu Icons and Descriptions C/ FUser Menu Parameters Menu ParametersAdvanced Menu Icons and Descriptions iCOM Controls Training and Service ManualUser Menu: Set Point Parameters U100 series DefaultUser Menu: Spare Parts List, Large Display Only Menu LineUser Menu: Graphics Parameters iCOM Controls Training and Service ManualDefault ParameterMenu Line User Menu: Set Alarm Parameters U200 seriesDefault ParameterUser Menu: Display Setup Parameters U400 series iCOM Controls Training and Service ManualUser Menu: Active Alarms Parameters Parameter DefaultUser Menu Total Run Hours Parameters U500 series iCOM Control Training and Service ManualDefault Menu LineMenu Line iCOM Controls Training and Service ManualUser Menu: Service Contacts U700 series ParameterDefault Service Menu ParametersiCOM Control Training and Service Manual Menu LineMenu Line DefaultService Menu: Unit Diary Log Parameter ParameterDefault iCOM Control Training and Service ManualDefault Menu LineMenu Line DefaultDefault ParameterDefault iCOM Control Training and Service ManualDefault Menu LineDefault iCOM Controls Training and Service ManualDefault Parameters: Page 6 ofMenu Line iCOM Control Training and Service ManualDefault ParameterParameter iCOM Controls Training and Service ManualMenu Line RangeParameter iCOM Control Training and Service ManualMenu Line RangeService Menu Set Alarm Parameters iCOM Controls Training and Service ManualDefault DefaultService Menu Set Alarm Parameters iCOM Control Training and Service ManualService Menu: Set Alarm Parameters: Page 3 of Menu LineService Menu Set Alarm Parameters iCOM Controls Training and Service ManualService Menu: Set Alarm Parameters: Page 5 of Menu LineParameter iCOM Control Training and Service ManualMenu Line RangeDefault iCOM Controls Training and Service ManualDefault Menu LineDefault iCOM Control Training and Service ManualDefault Menu LineDefault iCOM Controls Training and Service ManualDefault Menu LineDefault iCOM Control Training and Service ManualDefault Menu LineMenu Code Advanced Menu ParametersiCOM Controls Training and Service Manual ParameterDefault iCOM Control Training and Service ManualDefault Menu CodeDefault iCOM Controls Training and Service ManualDefault Menu CodeMenu Code iCOM Control Training and Service ManualDefault ParameterParameter DefaultMenu Code RangeType Events Notifications ParametersiCOM Control Training and Service Manual Description Large DisplayType Events Notifications Parameters continuediCOM Controls Training and Service Manual Description Large DisplayType iCOM Control Training and Service ManualEvents Notifications Parameters continued Description Large DisplayiCOM Controls Training and Service Manual Events Notifications Parameters continuedEvent ID number, Description and Function DefaultiCOM Control Training and Service Manual LOSS OFiCOM Controls Training and Service Manual HUM HRSUnit COMP iCOM Control Training and Service Manual DIG SCROLL2UNIT CODE iCOM Control Training and Service Manual MISMATCHIntroduction ChapterControl Board Connections iCOM Controls Training and Service ManualLarge Disdplay Small Display LCD Display BoardiCOM Control Training and Service Manual iCOM Controls Training and Service Manual Control Board DIP Switches and Plug ConnectorsUnit Mounted Control Board Connector iCOM Control Training and Service ManualiCOM Control Board DIP Switch #2 Settings SettingSetting iCOM Controls Training and Service ManualiCOM Control Board Jumper Settings Default SettingDefault Setting Large Display Jumper SettingsSetting Small Display DIP Switch #3 SettingsSetting iCOM Controls Training and Service ManualSmall Display Jumper Settings Default SettingP4 24 VAC Power DS SystemsiCOM Control Training and Service Manual P8: 24 VAC Alarm InputsP32: Compressor Devices iCOM Controls Training and Service ManualP22 Glycool Valve Std. Pressure Actuator P33: Compressor DevicesP39: Firestat & Remote Shutdown iCOM Control Training and Service ManualP38 Smoke Detector P40: Basic Unit ConnectionsP65: Optional Intelleslot Power Suplly iCOM Controls Training and Service ManualP67: Temperature/ Humidity Sensors P64: Unit Large Display Digital SignalsP4: 24 VAC Power Fuse Board Layout: All UnitsiCOM Control Training and Service Manual P41: 24 VAC PowerTemperature/ Humidity Board Temperature/ Humidity Board: All UnitsiCOM Controls Training and Service Manual P67: Return Air Temperature/ Humidity BoardNOTES iCOM Control Training and Service ManualC P U General Troubleshooting DataChapter iCOM Controls Training and Service ManualAreas of Control IsolationiCOM Control Training and Service Manual Semiconductor BASIC OPERATION OF THE TRIACiCOM Controls Training and Service Manual Semiconductor Showing No Movement of ElectronsFront and Left Side Views of the Triac iCOM Control Training and Service ManualSchematic Drawing for the Triac Input Opto-Isolator Basic Operation of the Opto-IsolatorOutput Opto-Isolator Output Opto-IsolatorPin Location Troubleshooting the Output Opto-IsolatoriCOM Control Training and Service Manual OUTPUT VOLTAGE CHECKInput Opto-IsolatorPin Location Troubleshooting the Input Opto-IsolatoriCOM Controls Training and Service Manual INPUT VOLTAGE CHECKiCOM Control Training and Service Manual Alarm Input Opto-IsolatorLegendMicroprocessor Control Board OptoiCOM Controls Training and Service Manual Control Output Opto-IsolatorLegendControl Output Triac Legend OptoiCOM Diagnostics / Service Mode Program iCOM Control Training and Service ManualProgramming Basic Troubleshooting StepsiCOM Controls Training and Service Manual DC Voltage checkiCOM Control Training and Service Manual If 24 VAC is present perform the followingMoisture Content Charts iCOM Controls Training and Service ManualGrains Per Cu Ft iCOM Control Training and Service ManualMoisture Content at Temperature = 80F 26.7ºC Grains Per LbGrains Per Cu Ft iCOM Controls Training and Service ManualMoisture Content at Temperature = 79F 26.1ºC Grains Per LbGrains Per Cu Ft iCOM Control Training and Service ManualMoisture Content at Temperature = 78F 25.6ºC Grains Per LbGrains Per Lb Moisture Content at Temperature = 77F 25.0ºCGrains Per Cu Ft Grains Per Lb Moisture Content at Temperature = 76F 24.4ºCGrains Per Cu Ft Grains Per Cu Ft iCOM Controls Training and Service ManualMoisture Content at Temperature = 75F 23.9ºC Grains Per LbGrains Per Lb Moisture Content at Temperature = 74F 23.3ºCGrains Per Cu Ft Grains Per Cu Ft iCOM Controls Training and Service ManualMoisture Content at Temperature = 73F 22.8ºC Grains Per LbGrains Per Cu Ft iCOM Control Training and Service ManualMoisture Content at Temperature = 72F 22.2ºC Grains Per LbGrains Per Lb Moisture Content at Temperature = 71F 21.7ºCGrains Per Cu Ft Grains Per Cu Ft iCOM Control Training and Service ManualMoisture Content at Temperature = 70F 21.1ºC Grains Per LbGrains Per Cu Ft iCOM Controls Training and Service ManualMoisture Content at Temperature = 69F 20.6ºC Grains Per LbGrains Per Cu Ft iCOM Control Training and Service ManualMoisture Content at Temperature = 68F 20.0ºC Grains Per LbGrains Per Lb Moisture Content at Temperature = 67F 19.4ºCGrains Per Cu Ft Grains Per Cu Ft iCOM Control Training and Service ManualMoisture Content at Temperature = 66F 18.9ºC Grains Per LbGrains Per Cu Ft iCOM Controls Training and Service ManualMoisture Content at Temperature = 65F 18.3ºC Grains Per LbSuction Transducer Information Codes A124-A128 iCOM Control Training and Service ManualiCOM Controls Training and Service Manual Digital Scroll High Temperature Sensor ChartNTC Code S606 and S608 FACTORY SERVICE TECHNICIAN Unit Code DescriptioniCOM Control Training and Service Manual Troubleshooting Checklist iCOM Controls Training and Service ManualSet Alarms Glossary of Unit and System Parameters User MenuiCOM Control Training and Service Manual CodeTimer iCOM Controls Training and Service ManualDisplay Setup CodeStandby settings / Lead-lag Service MenuService contacts Wellness / General SettingsCompr. 1 Settings iCOM Controls Training and Service ManualFan Settings Compr. 2 SettingsDiagnostics / Service El. Heater 3 SettingsHumidifier Settings CodeCode iCOM Controls Training and Service ManualSet Alarms TypeOptions Setup iCOM Control Training and Service ManualSystem / Network Setup CodeService contacts Advanced MenuiCOM Controls Training and Service Manual Factory SettingsCode iCOM Control Training and Service ManualAccess Glossary of Terms iCOM Controls Training and Service ManualiCOM Control Training and Service Manual Hysteresis: DifferentialiCOM Controls Training and Service Manual Input: An incoming information signaliCOM Control Training and Service Manual Prefill: The period of time between when the water begins to fill the pan and the humidifier lamps turn onComputer and Network Terms iCOM Controls Training and Service ManualEthernet: A local-areanetwork LANarchitecture developed by Xerox Corporationin cooperation with DECand Intelin 1976. Ethernet uses a bus or star topologyand supports data transfer ratesof 10 Mbps. The Ethernet specification served as the basis for the IEEE 802.3 standard, which specifies the physicaland lower softwarelayers. Ethernet uses the CSMA/CDaccess method to handle simultaneous demands. It is one of the most widely implemented LAN standards iCOM Controls Training and Service Manual •the type of error checking to be usediCOM Control Training and Service Manual There are a variety of standard protocols from which programmerscan choose. Each has particular advantages and disadvantages; for example, some are simpler than others, some are more reliable, and some are faster. From a userspoint of view, the only interesting aspect about protocols is that your computeror device must supportthe right ones if you want to communicate with other computers. The protocol can be implemented either in hardwareor in softwareiCOM Controls Training and Service Manual Understanding IP Addressing: Every computer that communicates over the Internet is assigned an IP address that uniquely identifies the device and distinguishes it from other computers on the Internet. An IP address consists of 32 bits, often shown as 4 octets of numbers from 0-255represented in decimal form instead of binary form. For example, the IP address 168.212.226.204 in binary form is:What is networking?… Network InformationiCOM Control Training and Service Manual HUBS AND SWITCHESTwisted pair - 10baseT - UTP Cable iCOM Controls Training and Service ManualUNIT IDENTIFICATION OR ADDRESSING How To Use The Schematics iCOM Control Training and Service Manual182769 Liebert DS iCOM Global Control 8 - 12 Ton Electrical SchematicsiCOM Controls Training and Service Manual iCOM Control Training and Service Manual