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Liebert TM-10098 Troubleshooting the Input Opto-Isolator, Input Opto-IsolatorPin Location

Models: TM-10098

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Troubleshooting the Input Opto-Isolator

iCOM Controls Training and Service Manual

Troubleshooting the Input Opto-Isolator

The opto-isolator IC chips used in these circuits are the H11AA (input) devices. The pin location for component checks on the input opto. The indented circle in the upper left hand corner of this chip indicates the location of Pin 1. Note that the number sequence is in a "U" format: down 1 and 2 on the left and up 3 and 4 on the right.

1

2

4

3

Input Opto-Isolator Pin Location

INPUT VOLTAGE CHECK

Pin 1

Pin 2

Pin 3

Pin 4

Receives the AC source voltage (This voltage is 24 VAC prior to the Opto and is about 1.2 VAC at the opto).

Completes the AC source to the neutral and or safety ground.

Completes the DC source to the digital ground.

Receives the DC voltage source from the microprocessor (This voltage level is 3.3 VDC when not activated and is 0 VDC when activated.)

Note that all AC source checks are referenced to the associated transformer neutral and/or the safety ground, and that the DC source reference is to -V or digital ground.

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Liebert TM-10098 Troubleshooting the Input Opto-Isolator, iCOM Controls Training and Service Manual, Input Voltage Check

Contents

TM-10098:Rev. 02/06 Environmental Training and Service ManualLarge Systems iCOM MicroprocessoriCOM Control Training and Service Manual Training & Service ManualiCOM Page Chapter 1 Temperature/ Humidity Control Table of ContentsiCOM Control Training and Service Manual Chapter 2: Programming Functions Chapter 4: General Troubleshooting DataChapter 3: iCOM Hardware Connections iCOM Controls Training and Service ManualElectrical Schematics How To Use The SchematicsGlossary of Terms Computer and Network TermsTemperature Control Program Types Chapter Temperature and Humidity Control ProgramsCooling and/ or Heating Required, in Percent % iCOM Controls Training and Service ManualMembership iCOM Control Training and Service ManualKnowledge Base/Decision Making ConsequenceProportional P Control iCOM Controls Training and Service ManualProportional + Integral PI Control Proportional + Integral + Derivative PID Control iCOM Control Training and Service ManualA suggested tuning procedure is as follows iCOM Controls Training and Service ManualOperations and Charts Temperature ControliCOM Control Training and Service Manual Temp Set Point + 1/2 Proportional Band 2 Stage Compressorized Cooling – No Dead Band2 Stage Compressorized Cooling – With Dead Band iCOM Control Training and Service ManualSTAGECOMPRESSORS, UNLOADER STATE Temp Set Point + 1/2 Proportional Band 4 Stage Compressorized Cooling – No Dead BandSTAGE TEMPERATURE iCOM Controls Training and Service Manual4 Stage Compressorized Cooling – With Dead Band 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 band iCOM Control Training and Service Manual1 compressor operation Switch 2nd iCOM Controls Training and Service ManualSwitch 1st compressor ON compressor ONGlycool at 100% Capacity – No Dead Band iCOM Control Training and Service ManualGlycool at 50% Capacity – No Dead Band iCOM Controls Training and Service ManualDual Source Cooling Staged Electric Reheat Dual Cooling at 100% Capacity – No Dead Band3 Stage Electric Reheat – No Dead Band iCOM Controls Training and Service ManualTemp Set Point - 1/2 Proportional Band 3 Stage Electric Reheat - With Dead Band Humidity Control Program Types Humidity ControliCOM Controls Training and Service Manual Humidity iCOM Control Training and Service ManualHumidity ProportionalHumidifier Operation Operations and ChartsiCOM Controls Training and Service Manual Relative Humidity ControlInfrared Humidification – No Dead Band iCOM Control Training and Service ManualHumidity Set Point - 1/2 Proportional Band Infrared Humidification – With Dead Band iCOM Controls Training and Service ManualAutoflush Control Flow Chart iCOM Control Training and Service ManualDehumidification Operation Humid Set Point: 50% Humidity Set Point + 1/2 Proportional Band iCOM Controls Training and Service ManualReheating during Dehumidification No Normal Delayed iCOM Controls Training and Service ManualParameterOperation Start Additional ProgramsAuto restart iCOM Control Training and Service ManualHigh Pressure Cutout Fan Alarm / Fan settingsSuction Pressure Transducer Call for CoolingThe Startup and Freeze Protection Program iCOM Control Training and Service ManualiCOM Controls Training and Service Manual Next Maintenance CalculationCalculation of next Maintenance Parameters The Maintenance Calculation is done as followsGeneral Maintenance Settings Parameters for next Maintenance CalculationiCOM Control Training and Service Manual Shared Parameters an understanding Understanding the iCOM Network setup process Networking and FunctionsiCOM Control Training and Service Manual The Basics for Cooling Unit Placement The Basics for HardwareiCOM Controls Training and Service Manual The Basic for ProgrammingExample: Display: Example: Control Board: iCOM Control Training and Service ManualiCOM Controls Training and Service Manual Setting ParametersUnit No. Unit No.Power iCOM Control Training and Service ManualSwitch Unit No.U2U:Switc iCOM Controls Training and Service ManualLine S802: Number units connected: xx 01 - iCOM Control Training and Service ManualiCOM Controls Training and Service Manual TeamworkTeamwork Modes “No” TeamworkiCOM Control Training and Service Manual Unit Lead/ Lag or Running/ Standby FunctionTeamwork Mode Typical Lead/ Lag Running/ Standby FunctionStandby & Cascade iCOM Controls Training and Service ManualiCOM Control Training and Service Manual NotesProgramming Functions ChapterSmall Graphic Display with Panel Mount Bezel Optional Large Graphic Display with PaneliCOM Keyboard Layout iCOM Display Components and FunctionsiCOM Control Training and Service Manual iCOM Keyboard Layout iCOM Controls Training and Service ManualIcon Key NameiCOM Control Training and Service Manual iCOM Display Symbols/ IconsStatus Display Programming FunctionsiCOM Control Training and Service Manual Menu Screens ICON Symbols Menu Parameters NamesLevel 2: Service Level 1: UseriCOM Controls Training and Service Manual User Menu Icons and DescriptionsIcon NameC/ F Service Menu Icons and DescriptionsAdvanced Menu Icons and Descriptions Menu ParametersUser Menu Parameters iCOM Controls Training and Service ManualUser Menu: Spare Parts List, Large Display Only DefaultUser Menu: Set Point Parameters U100 series Menu LineDefault iCOM Controls Training and Service ManualUser Menu: Graphics Parameters ParameterDefault User Menu: Set Alarm Parameters U200 seriesMenu Line ParameterUser Menu: Active Alarms Parameters Parameter iCOM Controls Training and Service ManualUser Menu: Display Setup Parameters U400 series DefaultDefault iCOM Control Training and Service ManualUser Menu Total Run Hours Parameters U500 series Menu LineUser Menu: Service Contacts U700 series iCOM Controls Training and Service ManualMenu Line ParameteriCOM Control Training and Service Manual Service Menu ParametersDefault Menu LineService Menu: Unit Diary Log Parameter DefaultMenu Line ParameterDefault iCOM Control Training and Service ManualDefault Menu LineDefault DefaultMenu Line ParameterDefault iCOM Control Training and Service ManualDefault Menu LineDefault iCOM Controls Training and Service ManualDefault Parameters: Page 6 ofDefault iCOM Control Training and Service ManualMenu Line ParameterMenu Line iCOM Controls Training and Service ManualParameter RangeMenu Line iCOM Control Training and Service ManualParameter RangeDefault iCOM Controls Training and Service ManualService Menu Set Alarm Parameters DefaultService Menu: Set Alarm Parameters: Page 3 of iCOM Control Training and Service ManualService Menu Set Alarm Parameters Menu LineService Menu: Set Alarm Parameters: Page 5 of iCOM Controls Training and Service ManualService Menu Set Alarm Parameters Menu LineMenu Line iCOM Control Training and Service ManualParameter 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 LineiCOM Controls Training and Service Manual Advanced Menu ParametersMenu Code ParameterDefault iCOM Control Training and Service ManualDefault Menu CodeDefault iCOM Controls Training and Service ManualDefault Menu CodeDefault iCOM Control Training and Service ManualMenu Code ParameterMenu Code DefaultParameter RangeiCOM Control Training and Service Manual Events Notifications ParametersType Description Large DisplayiCOM Controls Training and Service Manual Events Notifications Parameters continuedType Description Large DisplayEvents Notifications Parameters continued iCOM Control Training and Service ManualType Description Large DisplayEvent ID number, Description and Function Events Notifications Parameters continuediCOM Controls Training and Service Manual DefaultLOSS OF iCOM Control Training and Service ManualHUM HRS iCOM Controls Training and Service ManualUnit COMP DIG SCROLL2 iCOM Control Training and Service ManualUNIT CODE MISMATCH iCOM Control Training and Service ManualControl Board Connections ChapterIntroduction iCOM Controls Training and Service ManualiCOM Control Training and Service Manual LCD Display BoardLarge Disdplay Small Display Unit Mounted Control Board Control Board DIP Switches and Plug ConnectorsiCOM Controls Training and Service Manual iCOM Control Board DIP Switch #2 Settings iCOM Control Training and Service ManualConnector SettingiCOM Control Board Jumper Settings iCOM Controls Training and Service ManualSetting Default SettingSetting Large Display Jumper SettingsDefault Setting Small Display DIP Switch #3 SettingsSmall Display Jumper Settings iCOM Controls Training and Service ManualSetting Default SettingiCOM Control Training and Service Manual DS SystemsP4 24 VAC Power P8: 24 VAC Alarm InputsP22 Glycool Valve Std. Pressure Actuator iCOM Controls Training and Service ManualP32: Compressor Devices P33: Compressor DevicesP38 Smoke Detector iCOM Control Training and Service ManualP39: Firestat & Remote Shutdown P40: Basic Unit ConnectionsP67: Temperature/ Humidity Sensors iCOM Controls Training and Service ManualP65: Optional Intelleslot Power Suplly P64: Unit Large Display Digital SignalsiCOM Control Training and Service Manual Fuse Board Layout: All UnitsP4: 24 VAC Power P41: 24 VAC PoweriCOM Controls Training and Service Manual Temperature/ Humidity Board: All UnitsTemperature/ Humidity Board P67: Return Air Temperature/ Humidity BoardiCOM Control Training and Service Manual NOTESChapter General Troubleshooting DataC P U iCOM Controls Training and Service ManualiCOM Control Training and Service Manual IsolationAreas of Control iCOM Controls Training and Service Manual BASIC OPERATION OF THE TRIACSemiconductor Semiconductor Showing No Movement of ElectronsSchematic Drawing for the Triac iCOM Control Training and Service ManualFront and Left Side Views of the Triac Output Opto-Isolator Basic Operation of the Opto-IsolatorInput Opto-Isolator iCOM Control Training and Service Manual Troubleshooting the Output Opto-IsolatorOutput Opto-IsolatorPin Location OUTPUT VOLTAGE CHECKiCOM Controls Training and Service Manual Troubleshooting the Input Opto-IsolatorInput Opto-IsolatorPin Location INPUT VOLTAGE CHECKMicroprocessor Control Board Alarm Input Opto-IsolatorLegendiCOM Control Training and Service Manual OptoControl Output Triac Legend Control Output Opto-IsolatorLegendiCOM Controls Training and Service Manual OptoiCOM Control Training and Service Manual iCOM Diagnostics / Service Mode ProgramiCOM Controls Training and Service Manual Basic Troubleshooting StepsProgramming DC Voltage checkIf 24 VAC is present perform the following iCOM Control Training and Service ManualiCOM Controls Training and Service Manual Moisture Content ChartsMoisture Content at Temperature = 80F 26.7ºC iCOM Control Training and Service ManualGrains Per Cu Ft Grains Per LbMoisture Content at Temperature = 79F 26.1ºC iCOM Controls Training and Service ManualGrains Per Cu Ft Grains Per LbMoisture Content at Temperature = 78F 25.6ºC iCOM Control Training and Service ManualGrains Per Cu Ft Grains Per LbGrains Per Cu Ft Moisture Content at Temperature = 77F 25.0ºCGrains Per Lb Grains Per Cu Ft Moisture Content at Temperature = 76F 24.4ºCGrains Per Lb Moisture Content at Temperature = 75F 23.9ºC iCOM Controls Training and Service ManualGrains Per Cu Ft Grains Per LbGrains Per Cu Ft Moisture Content at Temperature = 74F 23.3ºCGrains Per Lb Moisture Content at Temperature = 73F 22.8ºC iCOM Controls Training and Service ManualGrains Per Cu Ft Grains Per LbMoisture Content at Temperature = 72F 22.2ºC iCOM Control Training and Service ManualGrains Per Cu Ft Grains Per LbGrains Per Cu Ft Moisture Content at Temperature = 71F 21.7ºCGrains Per Lb Moisture Content at Temperature = 70F 21.1ºC iCOM Control Training and Service ManualGrains Per Cu Ft Grains Per LbMoisture Content at Temperature = 69F 20.6ºC iCOM Controls Training and Service ManualGrains Per Cu Ft Grains Per LbMoisture Content at Temperature = 68F 20.0ºC iCOM Control Training and Service ManualGrains Per Cu Ft Grains Per LbGrains Per Cu Ft Moisture Content at Temperature = 67F 19.4ºCGrains Per Lb Moisture Content at Temperature = 66F 18.9ºC iCOM Control Training and Service ManualGrains Per Cu Ft Grains Per LbMoisture Content at Temperature = 65F 18.3ºC iCOM Controls Training and Service ManualGrains Per Cu Ft Grains Per LbiCOM Control Training and Service Manual Suction Transducer Information Codes A124-A128NTC Code S606 and S608 Digital Scroll High Temperature Sensor ChartiCOM Controls Training and Service Manual iCOM Control Training and Service Manual Unit Code DescriptionFACTORY SERVICE TECHNICIAN iCOM Controls Training and Service Manual Troubleshooting ChecklistiCOM Control Training and Service Manual Glossary of Unit and System Parameters User MenuSet Alarms CodeDisplay Setup iCOM Controls Training and Service ManualTimer CodeService contacts Service MenuStandby settings / Lead-lag Wellness / General SettingsFan Settings iCOM Controls Training and Service ManualCompr. 1 Settings Compr. 2 SettingsHumidifier Settings El. Heater 3 SettingsDiagnostics / Service CodeSet Alarms iCOM Controls Training and Service ManualCode TypeSystem / Network Setup iCOM Control Training and Service ManualOptions Setup CodeiCOM Controls Training and Service Manual Advanced MenuService contacts Factory SettingsAccess iCOM Control Training and Service ManualCode iCOM Controls Training and Service Manual Glossary of TermsHysteresis: Differential iCOM Control Training and Service ManualInput: An incoming information signal iCOM Controls Training and Service ManualPrefill: The period of time between when the water begins to fill the pan and the humidifier lamps turn on iCOM Control Training and Service ManualiCOM Controls Training and Service Manual Computer and Network TermsEthernet: 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 •the type of error checking to be used iCOM Controls Training and Service ManualThere 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 software iCOM Control Training and Service ManualUnderstanding 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: iCOM Controls Training and Service ManualiCOM Control Training and Service Manual Network InformationWhat is networking?… HUBS AND SWITCHESUNIT IDENTIFICATION OR ADDRESSING iCOM Controls Training and Service ManualTwisted pair - 10baseT - UTP Cable iCOM Control Training and Service Manual How To Use The SchematicsiCOM Controls Training and Service Manual Electrical Schematics182769 Liebert DS iCOM Global Control 8 - 12 Ton iCOM Control Training and Service Manual