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Liebert TM-10098 service manual Stage Electric Reheat - With Dead Band

Models: TM-10098

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3 Stage Electric Reheat – With Dead Band

iCOM Control Training and Service Manual

3 Stage Electric Reheat – With Dead Band

Temp Set Point - (1/2 Dead Band + 1/2 Proportional Band)
Temp Set Point: 70°F
Proportional Band: 8°F		Reheat 1 On
Dead Band: 2°F		Reheat 1 On
Dead Band: 2°F	Reheat 2 On
	Reheat 2 On
Reheat 3 On
65	66	67	68	69	70
			Reheat	DB
	Reheat		Reheat
	Reheat		2 Off	Reheat
	3 Off		2 Off
	3 Off
				1 Off
Decreasing 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 decreases Reheat 1 is activated at 67.7°F or ½ of the dead band value plus 33% of the heating control band. If the return air temperature continues to decrease Reheat 2 will activate at 66.4°F or ½ of the dead band value plus 66% of the heating control band. If the return air temperature continues to decrease Reheat 3 will activate at 65°F or ½ of the dead band value plus 100% of the heating control band.

When the return air temperature starts to increase, Reheat 3 is deactivated at 66.4°F or ½ of the dead band value plus 66% of the heating control band. Reheat 2 is deactivated at 67.7°F or ½ of the dead band value plus 33% of the heating control band. Reheat 1 is deactivated at 69°F or ½ of the dead band value plus 0% of the heating 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.

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Liebert TM-10098 service manual Stage Electric Reheat - With Dead Band

Contents

Environmental Training and Service Manual TM-10098:Rev. 02/06Large Systems iCOM MicroprocessorTraining & Service Manual iCOM Control Training and Service ManualiCOM Page Table of Contents Chapter 1 Temperature/ Humidity ControliCOM Control Training and Service Manual Chapter 4: General Troubleshooting Data Chapter 2: Programming FunctionsChapter 3: iCOM Hardware Connections iCOM Controls Training and Service ManualHow To Use The Schematics Electrical SchematicsGlossary of Terms Computer and Network TermsChapter Temperature and Humidity Control Programs Temperature Control Program TypesCooling and/ or Heating Required, in Percent % iCOM Controls Training and Service ManualiCOM Control Training and Service Manual MembershipKnowledge Base/Decision Making ConsequenceiCOM Controls Training and Service Manual Proportional P ControlProportional + Integral PI Control iCOM Control Training and Service Manual Proportional + Integral + Derivative PID ControliCOM Controls Training and Service Manual A suggested tuning procedure is as followsTemperature Control Operations and ChartsiCOM Control Training and Service Manual 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 BandiCOM Controls Training and Service Manual STAGE TEMPERATURE4 Stage Compressorized Cooling – With Dead Band 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 bandiCOM Controls Training and Service Manual 1 compressor operation Switch 2ndSwitch 1st compressor ON compressor ONiCOM Control Training and Service Manual Glycool at 100% Capacity – No Dead BandiCOM Controls Training and Service Manual Glycool at 50% Capacity – No Dead BandDual Source Cooling Dual Cooling at 100% Capacity – No Dead Band Staged Electric ReheatiCOM Controls Training and Service Manual 3 Stage Electric Reheat – No Dead BandTemp Set Point - 1/2 Proportional Band 3 Stage Electric Reheat - With Dead Band Humidity Control Humidity Control Program TypesiCOM Controls Training and Service Manual iCOM Control Training and Service Manual HumidityHumidity ProportionalOperations and Charts Humidifier OperationiCOM Controls Training and Service Manual Relative Humidity ControliCOM Control Training and Service Manual Infrared Humidification – No Dead BandHumidity Set Point - 1/2 Proportional 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 iCOM Controls Training and Service Manual No Normal DelayedParameterOperation Additional Programs StartAuto restart iCOM Control Training and Service ManualFan Alarm / Fan settings High Pressure CutoutSuction Pressure Transducer Call for CoolingiCOM Control Training and Service Manual The Startup and Freeze Protection ProgramNext Maintenance Calculation iCOM Controls Training and Service ManualCalculation of next Maintenance Parameters The Maintenance Calculation is done as followsParameters for next Maintenance Calculation General Maintenance SettingsiCOM Control Training and Service Manual Shared Parameters an understanding Networking and Functions Understanding the iCOM Network setup processiCOM Control Training and Service Manual The Basics for Hardware The Basics for Cooling Unit PlacementiCOM Controls Training and Service Manual The Basic for ProgrammingiCOM Control Training and Service Manual Example: Display: Example: Control Board:Setting Parameters iCOM Controls Training and Service ManualUnit No. Unit No.iCOM Control Training and Service Manual PowerSwitch Unit No.iCOM Controls Training and Service Manual U2U:SwitciCOM Control Training and Service Manual Line S802: Number units connected: xx 01 -Teamwork iCOM Controls Training and Service ManualTeamwork Modes “No” TeamworkUnit Lead/ Lag or Running/ Standby Function iCOM Control Training and Service ManualTeamwork Mode Typical Lead/ Lag Running/ Standby FunctioniCOM Controls Training and Service Manual Standby & CascadeNotes iCOM Control Training and Service ManualChapter Programming FunctionsSmall Graphic Display with Panel Mount Bezel Optional Large Graphic Display with PaneliCOM Display Components and Functions iCOM Keyboard LayoutiCOM Control Training and Service Manual iCOM Controls Training and Service Manual iCOM Keyboard LayoutIcon Key NameiCOM Display Symbols/ Icons iCOM Control Training and Service ManualProgramming Functions Status DisplayMenu Screens ICON Symbols Menu Parameters Names iCOM Control Training and Service ManualLevel 2: Service Level 1: UserUser Menu Icons and Descriptions iCOM Controls Training and Service ManualIcon NameService Menu Icons and Descriptions C/ FMenu Parameters Advanced Menu Icons and DescriptionsUser Menu Parameters iCOM Controls Training and Service ManualDefault User Menu: Spare Parts List, Large Display OnlyUser Menu: Set Point Parameters U100 series Menu LineiCOM Controls Training and Service Manual DefaultUser Menu: Graphics Parameters ParameterUser Menu: Set Alarm Parameters U200 series DefaultMenu Line ParameteriCOM Controls Training and Service Manual User Menu: Active Alarms Parameters ParameterUser Menu: Display Setup Parameters U400 series DefaultiCOM Control Training and Service Manual DefaultUser Menu Total Run Hours Parameters U500 series Menu LineiCOM Controls Training and Service Manual User Menu: Service Contacts U700 seriesMenu Line ParameterService Menu Parameters iCOM Control Training and Service ManualDefault Menu LineDefault Service Menu: Unit Diary Log ParameterMenu Line ParameteriCOM Control Training and Service Manual DefaultDefault Menu LineDefault DefaultMenu Line ParameteriCOM Control Training and Service Manual DefaultDefault Menu LineiCOM Controls Training and Service Manual DefaultDefault Parameters: Page 6 ofiCOM Control Training and Service Manual DefaultMenu Line ParameteriCOM Controls Training and Service Manual Menu LineParameter RangeiCOM Control Training and Service Manual Menu LineParameter RangeiCOM Controls Training and Service Manual DefaultService Menu Set Alarm Parameters DefaultiCOM Control Training and Service Manual Service Menu: Set Alarm Parameters: Page 3 ofService Menu Set Alarm Parameters Menu LineiCOM Controls Training and Service Manual Service Menu: Set Alarm Parameters: Page 5 ofService Menu Set Alarm Parameters Menu LineiCOM Control Training and Service Manual Menu LineParameter RangeiCOM Controls Training and Service Manual DefaultDefault Menu LineiCOM Control Training and Service Manual DefaultDefault Menu LineiCOM Controls Training and Service Manual DefaultDefault Menu LineiCOM Control Training and Service Manual DefaultDefault Menu LineAdvanced Menu Parameters iCOM Controls Training and Service ManualMenu Code ParameteriCOM Control Training and Service Manual DefaultDefault Menu CodeiCOM Controls Training and Service Manual DefaultDefault Menu CodeiCOM Control Training and Service Manual DefaultMenu Code ParameterDefault Menu CodeParameter RangeEvents Notifications Parameters iCOM Control Training and Service ManualType Description Large DisplayEvents Notifications Parameters continued iCOM Controls Training and Service ManualType Description Large DisplayiCOM Control Training and Service Manual Events Notifications Parameters continuedType Description Large DisplayEvents Notifications Parameters continued Event ID number, Description and FunctioniCOM Controls Training and Service Manual 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 MISMATCHChapter Control Board ConnectionsIntroduction iCOM Controls Training and Service ManualLCD Display Board iCOM Control Training and Service ManualLarge Disdplay Small Display Control Board DIP Switches and Plug Connectors Unit Mounted Control BoardiCOM Controls Training and Service Manual iCOM Control Training and Service Manual iCOM Control Board DIP Switch #2 SettingsConnector SettingiCOM Controls Training and Service Manual iCOM Control Board Jumper SettingsSetting Default SettingLarge Display Jumper Settings SettingDefault Setting Small Display DIP Switch #3 SettingsiCOM Controls Training and Service Manual Small Display Jumper SettingsSetting Default SettingDS Systems iCOM Control Training and Service ManualP4 24 VAC Power P8: 24 VAC Alarm InputsiCOM Controls Training and Service Manual P22 Glycool Valve Std. Pressure ActuatorP32: Compressor Devices P33: Compressor DevicesiCOM Control Training and Service Manual P38 Smoke DetectorP39: Firestat & Remote Shutdown P40: Basic Unit ConnectionsiCOM Controls Training and Service Manual P67: Temperature/ Humidity SensorsP65: Optional Intelleslot Power Suplly P64: Unit Large Display Digital SignalsFuse Board Layout: All Units iCOM Control Training and Service ManualP4: 24 VAC Power P41: 24 VAC PowerTemperature/ Humidity Board: All Units iCOM Controls Training and Service ManualTemperature/ Humidity Board P67: Return Air Temperature/ Humidity BoardNOTES iCOM Control Training and Service ManualGeneral Troubleshooting Data ChapterC P U iCOM Controls Training and Service ManualIsolation iCOM Control Training and Service ManualAreas of Control BASIC OPERATION OF THE TRIAC iCOM Controls Training and Service ManualSemiconductor Semiconductor Showing No Movement of ElectronsiCOM Control Training and Service Manual Schematic Drawing for the TriacFront and Left Side Views of the Triac Basic Operation of the Opto-Isolator Output Opto-IsolatorInput Opto-Isolator Troubleshooting the Output Opto-Isolator iCOM Control Training and Service ManualOutput Opto-IsolatorPin Location OUTPUT VOLTAGE CHECKTroubleshooting the Input Opto-Isolator iCOM Controls Training and Service ManualInput Opto-IsolatorPin Location INPUT VOLTAGE CHECKAlarm Input Opto-IsolatorLegend Microprocessor Control BoardiCOM Control Training and Service Manual OptoControl Output Opto-IsolatorLegend Control Output Triac LegendiCOM Controls Training and Service Manual OptoiCOM Diagnostics / Service Mode Program iCOM Control Training and Service ManualBasic Troubleshooting Steps iCOM Controls Training and Service ManualProgramming DC Voltage checkiCOM Control Training and Service Manual If 24 VAC is present perform the followingMoisture Content Charts iCOM Controls Training and Service ManualiCOM Control Training and Service Manual Moisture Content at Temperature = 80F 26.7ºCGrains Per Cu Ft Grains Per LbiCOM Controls Training and Service Manual Moisture Content at Temperature = 79F 26.1ºCGrains Per Cu Ft Grains Per LbiCOM Control Training and Service Manual Moisture Content at Temperature = 78F 25.6ºCGrains Per Cu Ft Grains Per LbMoisture Content at Temperature = 77F 25.0ºC Grains Per Cu FtGrains Per Lb Moisture Content at Temperature = 76F 24.4ºC Grains Per Cu FtGrains Per Lb iCOM Controls Training and Service Manual Moisture Content at Temperature = 75F 23.9ºCGrains Per Cu Ft Grains Per LbMoisture Content at Temperature = 74F 23.3ºC Grains Per Cu FtGrains Per Lb iCOM Controls Training and Service Manual Moisture Content at Temperature = 73F 22.8ºCGrains Per Cu Ft Grains Per LbiCOM Control Training and Service Manual Moisture Content at Temperature = 72F 22.2ºCGrains Per Cu Ft Grains Per LbMoisture Content at Temperature = 71F 21.7ºC Grains Per Cu FtGrains Per Lb iCOM Control Training and Service Manual Moisture Content at Temperature = 70F 21.1ºCGrains Per Cu Ft Grains Per LbiCOM Controls Training and Service Manual Moisture Content at Temperature = 69F 20.6ºCGrains Per Cu Ft Grains Per LbiCOM Control Training and Service Manual Moisture Content at Temperature = 68F 20.0ºCGrains Per Cu Ft Grains Per LbMoisture Content at Temperature = 67F 19.4ºC Grains Per Cu FtGrains Per Lb iCOM Control Training and Service Manual Moisture Content at Temperature = 66F 18.9ºCGrains Per Cu Ft Grains Per LbiCOM Controls Training and Service Manual Moisture Content at Temperature = 65F 18.3ºCGrains Per Cu Ft Grains Per LbSuction Transducer Information Codes A124-A128 iCOM Control Training and Service ManualDigital Scroll High Temperature Sensor Chart NTC Code S606 and S608iCOM Controls Training and Service Manual Unit Code Description iCOM Control Training and Service ManualFACTORY SERVICE TECHNICIAN Troubleshooting Checklist iCOM Controls Training and Service ManualGlossary of Unit and System Parameters User Menu iCOM Control Training and Service ManualSet Alarms CodeiCOM Controls Training and Service Manual Display SetupTimer CodeService Menu Service contactsStandby settings / Lead-lag Wellness / General SettingsiCOM Controls Training and Service Manual Fan SettingsCompr. 1 Settings Compr. 2 SettingsEl. Heater 3 Settings Humidifier SettingsDiagnostics / Service CodeiCOM Controls Training and Service Manual Set AlarmsCode TypeiCOM Control Training and Service Manual System / Network SetupOptions Setup CodeAdvanced Menu iCOM Controls Training and Service ManualService contacts Factory SettingsiCOM Control Training and Service Manual AccessCode 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:Network Information iCOM Control Training and Service ManualWhat is networking?… HUBS AND SWITCHESiCOM Controls Training and Service Manual UNIT IDENTIFICATION OR ADDRESSINGTwisted pair - 10baseT - UTP Cable How To Use The Schematics iCOM Control Training and Service ManualElectrical Schematics iCOM Controls Training and Service Manual182769 Liebert DS iCOM Global Control 8 - 12 Ton iCOM Control Training and Service Manual