Liebert TM-10098 - Manual

iCOM Controls Training and Service Manual Chapter 2: Programming Functions 52 Programming Functions 52 iCOM Display Components and Functions 53 iCOM Keypad Layout Descriptions 54 iCOM Display Symbols/ Icons 55 Programming Functions 56 Status Display Screens 56 Menu Screens – Icons/ Parameter Names 5...

iCOM Control Training and Service Manual Unit Control Board: Opto-Isolator/ Triac Legends 121 iCOM Diagnostics/ Service Mode Programs 123 Basic Troubleshooting Steps 124 Moisture Content Charts 126 Suction Transducer Information 143 Digital Scroll High Temperature Sensor Chart 144 Unit Code Descript...

iCOM Controls Training and Service Manual Chapter 1 Temperature and Humidity Control Programs This section provides details on how your Liebert iCOM control responds to the user programmed inputs values and room conditions. Refer to this section when you need specific information control operation. ...

iCOM Control Training and Service Manual Temperature Control Operations and Charts The temperature proportional control band value is divided into two parts: the temperature set point plus ½ of the temperature proportional band for cooling operation and the temperature set point minus ½ of the tempe...

iCOM Controls Training and Service Manual The temperature controller deactivates the second stage of cooling (lag compressor) when the return air temperature decreases to 50% of the cooling proportional control band value. The first cooling stage (lead compressor) is deactivated when the return air ...

iCOM Control Training and Service Manual 2 Stage Compressorized Cooling – With Dead Band Temp Set Point: 70 ° F Proportional Band: 8 ° F Dead Band: 2 ° F 70 71 72 73 74 75 Increasing Temperature Cool 1 On Cool 1 Off Cool 2 On Cool 2 Off Temp Set Point + (1/2 Dead Band + 1/2 Proportional Band) DB Not...

iCOM Control Training and Service Manual 4 Stage Compressorized Cooling – No Dead Band Temp Set Point: 70 ° F Proportional Band: 8 ° F 70 71 72 73 74 75 Increasing Temperature Cool 1 On Cool 1 Off Cool 4 On Cool 3 Off Temp Set Point + (1/2 Proportional Band) Cool 2 On Cool 3 On Cool 4 Off Cool 2 Off...

iCOM Controls Training and Service Manual The example below is based on a temperature set point of 70 ° F with a control band length of 4 ° F, which is ½ of the programmed temperature proportional band value. STAGE TEMPERATURE Cool 1 ON Set point plus 1 ° F Cool 2 ON Set point plus 2 ° F Cool 3 ON S...

iCOM Control Training and Service Manual temperature is at least 8 ° F below the return air temperature, or 3 ° F lower than the return air temperature for two consecutive hours. When the microprocessor decides that the return glycol fluid temperature is cold enough the first cooling band is the mod...

iCOM Controls Training and Service Manual Glycool at 50% Capacity – No Dead Band Temp Set Point: 70 ° Proportional Band: 8 ° 70 71 72 73 74 75 76 77 78 79 Increasing Temperature Band 1 Glycool Valve Band 2 Compressors Valve Closed 100% Open Cool 1 On Cool 2 On Temp Set Point + (1/2 Proportional Band...

iCOM Control Training and Service Manual 2-Stage or 4-Stage control method. If the chilled water temperature is not cold enough the valve control band is replaced by the compressor band. Dual Cooling at 100% Capacity – No Dead Band Temp Set Point: 70 ° Proportional Band: 8 ° 70 71 72 73 74 75 76 77 ...

iCOM Controls Training and Service Manual of the heating proportional band. The third electric heating stage activates when the return air temperature decreases to 100% of the heating proportional band. The temperature controller deactivates the third heating stage when the return air temperature in...

iCOM Control Training and Service Manual 3 Stage Electric Reheat – With Dead Band Temp Set Point: 70 ° F Proportional Band: 8 ° F Dead Band: 2 ° F 65 66 67 68 69 70 Decreasing Temperature Temp Set Point - (1/2 Dead Band + 1/2 Proportional Band) DB Reheat 1 On Reheat 3 On Reheat 2 On Reheat 3 Off Reh...

iCOM Controls Training and Service Manual Humidity Control Humidification and/ or Dehumidification Required, in Percent (%) The humidity control programs for the iCOM microprocessor is based on a calculated percent (%RH) requirement for humidification and/ or dehumidification. This percent (%RH) req...

iCOM Controls Training and Service Manual Relative Humidity Control Relative humidity control is based on the humidity content in the return air. The iCOM microprocessor control determines the unit humidification/ dehumidification operation by comparing the return air humidity value to the control b...

iCOM Control Training and Service Manual Infrared Humidification – No Dead Band Humid Set Point: 50% Proportional Band: 8% 45 46 47 48 49 50 Decreasing Humidity Humidification On Humidification Off Humidity Set Point - (1/2 Proportional Band) Note: in the above example that the control band begins a...

iCOM Controls Training and Service Manual Infrared Humidification – With Dead Band Humid Set Point: 50% Proportional Band: 8% Dead Band: 2% 45 46 47 48 49 50 Increasing Temperature Humidification On Humidification Off Humidity Set Point - (1/2 Dead Band + 1/2 Proportional Band) DB Note: in the above...

iCOM Controls Training and Service Manual Dehumidification Operation The Relative Humidity control program is used to illustrate the dehumidification operation in the following examples. The basic dehumidification control band is established at the humidity set point with the length equal to ½ of th...

iCOM Control Training and Service Manual Note: in the above example that the control band begins at the 50% humidity set point and has a length of 4%, which is ½ of the programmed humidity proportional band value. As the return air humidity increases, dehumidification operation is activated at 54%RH...

iCOM Controls Training and Service Manual The humidity controller activates the first stage of dehumidification operation when the return air humidity level increases to 50% of the humidity proportional band. The second stage of dehumidification is activated when the return air humidity level increa...

iCOM Control Training and Service Manual When the return air humidity level decreases to 52%RH or 50% of the dehumidification control band the second dehumidification stage is deactivated. When the return air humidity level decreases to the humidity set point of 50% or 0% of the humidity proportiona...

iCOM Control Training and Service Manual Additional Programs Start The unit fan is activated. The unit can be switched on/ off from 2 inputs: 1. Remote on/ off input (RSD – Remote Shutdown Device) 2. Display button Note: Switches 1 and 2 are in series; the unit will start only if both switches are i...

iCOM Controls Training and Service Manual Fan Alarm / Fan settings The fan operation is controlled by two (2) digital devices: the Loss of Airflow differential pressure switch and the Main fan Overload motor protection. The time delay at the unit start is always 5 seconds shorter than the control de...

iCOM Control Training and Service Manual The Startup and Freeze Protection Program The sequence for the call for cooling with the program features is as follows: The need for cooling is defined by the control setting for the temperature setpoint, proportional band, and deadband (if used). At this po...

iCOM Controls Training and Service Manual during the second time frame the cooling process locks off and will require a power off sequence. Next Maintenance Calculation Foreword The next maintenance calculation will help run the Liebert Environmental unit in an optimum way, to ensure minimum compone...

iCOM Control Training and Service Manual The control always takes the component with the most on/ off (cycling) as the reference component, which asking for the nearest maintenance (example: if the fan runs continuously, but the compressor switches on/off all the time, the next maintenance will be c...

iCOM Controls Training and Service Manual Starts per Day Optimum: the number of individual component starts that is considered as good or optimum. To be set by Service Engineer. Starts per Day Worst: the number of individual component starts that is considered as “hunting” or worst case. To be set b...

iCOM Control Training and Service Manual Freecooling and Dual cooling will operate in the same manner as chilled water with the supervision of the Supply Limit, again showing different valve positions on the units If in a Freecooling or Dual Cooling unit if the limit of the coil operation is detecte...

iCOM Controls Training and Service Manual The Basics for Cooling Unit Placement: Installation instructions are found in the product manuals for the Cooling units. Networking setup should include these additional factors for planning. • Locations of heat loads in conditioned space. • Air distribution...

iCOM Controls Training and Service Manual Setting Parameters Example: 2 Units with Small Display’s All Network parameters are viewed and programmed using the Service Menu function and by selecting the Network Setup Icon The following example references menu lines on the Network Setup screen: Line S8...

iCOM Control Training and Service Manual Example: 2 Units, One Large Display and One Small Display All Network parameters are viewed and programmed using the Service Menu function and by selecting the Network Setup Icon The following example references menu lines on the Network Setup screen: Line S8...

iCOM Controls Training and Service Manual Example: Large Wall Display and Five Units with Small Displays All Network parameters are viewed and programmed using the Service Menu function and by selecting the Network Setup Icon The following example references menu lines on the Network Setup screen: L...

iCOM Control Training and Service Manual Example: 4 Units in 2 Groups with 2 Large Displays All Network parameters are viewed and programmed using the Service Menu function and by selecting the Network Setup Icon The following example references menu lines on the Network Setup screen: Line S802: Num...

iCOM Controls Training and Service Manual Teamwork Teamwork Modes Teamwork is the ability to group unit functionality, while connected in a network, to provide the ability to work together as a team and address control functions in three different teamwork modes: “No” Teamwork In this mode all units...

iCOM Control Training and Service Manual Teamwork Mode 2 In teamwork mode 2 all system parameters are shared equally as in teamwork mode 1. The lead unit will define the temperature and humidity averages for the operational needs if there is a request for cooling, heating, dehumidification or humidi...

iCOM Controls Training and Service Manual Chapter 2 Programming Functions The standard iCOM control is supplied with a front panel mounted small display screen display which features a 128 x 64 dot matrix graphics. The display provides both descriptive text readouts and two (2) menu icons. The optio...

iCOM Controls Training and Service Manual iCOM Keyboard Layout: Icon Key Name Function On/ Off Key Controls the operation state of the unit. Alarm Key Silences the audible alarm. Help Key Accesses the integrated help menus. ESCape Key Returns to the previous display. Enter Key Confirms all selection...

iCOM Controls Training and Service Manual Programming Functions Status Display T he unit display will show the unit operational mode(s), return air temperature/ humidity readings and if active present alarm conditions. The end user can select from two (2) display types, graphical or simple. System V...

iCOM Control Training and Service Manual Menu Screens ICON Symbols Menu Parameters Names Level 1: User Level 2: Service Level 3: Advanced Readable w/o password PW required to program Readable w/o password PW required to program PW required to read or program 1 Setpoints Setpoints Factory Settings 2 ...

iCOM Controls Training and Service Manual User Menu Icons and Descriptions: Icon Name Descriptions Available Display °C/ °F % RH SET Set Points To view and change temperature and humidity set points Small and Large Spare Parts List Displays the spare parts list of the unit Large Event Log Contains a...

iCOM Control Training and Service Manual Service Menu Icons and Descriptions: Icon Name Descriptions Available Display °C/ °F % RH SET Set Points To view and change temperature and humidity set points Small and Large Unit Diary Is a notepad containing notes from the service person or customer Large ...

iCOM Controls Training and Service Manual Advanced Menu Icons and Descriptions: Icon Name Descriptions Available Display Factory Settings Factory configuration files. Do Not Change Settings Consult the Factory First Small and Large Change Passwords Allows the user to change the various passwords Sma...

iCOM Control Training and Service Manual Service Menu Parameters The Service menu display allows the user to customize the various unit settings for site specific operation. The factory default password to access the service menu items for programming is “501”. The Service Menu selections include th...

iCOM Controls Training and Service Manual Advanced Menu Parameters The Advanced menu displays allows the service technician to set the unit configuration code and to customize the various unit settings for site-specific operation. The factory default password to access the advanced menu items for pr...

iCOM Control Training and Service Manual Events Notifications Parameters ID Type Description (Large Display) Description (Small Display) 000 Alarm GENERAL ALARM GENERAL ALARM 001 Alarm COMP. 1 HIGH PRESSURE COMP. 1 HIGH PRESSURE 002 Alarm COMP. 1 LOW PRESSURE COMP. 1 LOW PRESSURE 003 Warning HIGH CH...

iCOM Controls Training and Service Manual Events Notifications Parameters (continued) ID Type Description (Large Display) Description (Small Display) 037 Message UNIT OFF UNIT OFF 038 Message SLEEP MODE SLEEP MODE 039 Message STANDBY MODE STANDBY MODE 040 Message POWER ON UNIT LOGIN POWER ON UNIT LO...

iCOM Controls Training and Service Manual Chapter 3 iCOM Control Board Connections Introduction This section describes the basic connection points on the Liebert Deluxe System 3 units. Each sub-section describes the standard electrical connections supplied with the iCOM controls. The detail is as fo...

iCOM Control Training and Service Manual 101 LCD Display Board The Advanced and Advanced with Graphics LCD display board is mounted to the system unit accent panel. The LCD display board connection to the system control board is identified as ribbon connector P26. Large Disdplay Small Display

iCOM Controls Training and Service Manual 102 Control Board DIP Switches and Plug Connectors This section deals with the 20 plug connections and the terminal block located on the unit control board. The tables in this section show all of the pin connections and the reference points for signal flow t...

iCOM Control Training and Service Manual 111 Fuse Board Layout: All Units This section deals with the seven (7) plug connectors on the fuse board. The fuse board is supplied on all systems with iCOM and is located in the low voltage section of the unit. The tables in this section show all of the con...

iCOM Controls Training and Service Manual 114 Chapter 4 General Troubleshooting Data * Basic Operation of the Opto and Triac * Troubleshooting the Opto-Isolator and Triac * Control Input Check (Sensors) * Frequency Conversion Chart (Temperature) * Frequency Conversion Chart (Humidity) * Troubleshoot...

iCOM Control Training and Service Manual 115 The temperature sensor senses a rise in temperature. The rise is transmitted to the C entral P rocessing U nit (CPU). The CPU looks into its memory for information and instructions on what to do with the rise in temperature. The CPU then makes the decisio...

iCOM Controls Training and Service Manual 116 BASIC OPERATION OF THE TRIAC To better understand the operation of the triac, we need to look at the movement of electrons in a special type of material used in electronics. Here we have a semiconductor material with what is called a depletion region. Th...

iCOM Controls Training and Service Manual 118 Basic Operation of the Opto-Isolator The purpose of the opto-isolator is to provide isolation of two voltage sources. This allows a DC voltage source to activate an AC voltage load device or allows an AC voltage source to provide a DC signal. We are work...

iCOM Control Training and Service Manual 119 Troubleshooting the Output Opto-Isolator The opto-isolator IC chips used in these circuits are the H11J (output) devices. The drawing shows the pin location for component checks on the output opto. The indented circle in the upper left hand corner of this...

iCOM Controls Training and Service Manual 120 Troubleshooting the Input Opto-Isolato r 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 th...

iCOM Control Training and Service Manual 121 Microprocessor Control Board: Typical Location othe Opto-Isolators and Triacs Input Opto-Islators Output Opto-Isolators and Triacs Microprocessor Control Board Alarm Input Opto-Isolator Legend: Opto Purpose Opto Purpose U15 Air Safety Switch U23 Power On ...

iCOM Controls Training and Service Manual Note: Use Pin 5 on the input opto-isolator with reference to the V- terminal for voltage check. The voltage level is 5 VDC. Control Output Opto-Isolator Legend: Opto Purpose Opto Purpose U1 Reheat 1 U10 Compressor 2 U2 Reheat 2 U11 Econ-O-Cycle Relay (R5) U3...

iCOM Controls Training and Service Manual Basic Troubleshooting Steps: Example: Unit load is not energizing. Programming: 1. Read and record all program parameter values. 2. Read and record all DIP (control) switch positions on all boards. Check all jumpers on each board, check for the CAN healthy l...

iCOM Controls Training and Service Manual Moisture Content Charts The following charts show moisture content of various levels of relative humidity for given temperatures. Follow the procedures below to use the charts: STEP 1: Locate the chart for the temperature with which you are working. STEP 2: ...

iCOM Controls Training and Service Manual Digital Scroll High Temperature Sensor Chart NTC (Code S606 and S608) 144

iCOM Control Training and Service Manual Unit Code Description The iCOM controller uses a system parameters auto configuration methodology. The unit will have a code on a serial tag displayed on the front of the electric panel. This code when entered during the factory QA process will define unit co...

iCOM Controls Training and Service Manual Troubleshooting Checklist 1. Check the obvious before beginning troubleshooting. A. Be sure that a remote control switch has not been shut off. B. Be sure that the communication cable is properly connected. C. Be sure that power is reaching all modules assoc...

iCOM Control Training and Service Manual Glossary of Unit and System Parameters User Menu Code Setpoints Type U102 Temperature setpoint Unit U103 Humidity setpoint Unit U104 Predictive Humidity control Unit U105 Supply Limit Unit U106 Supply Limit Value Unit Graphics Type System temperature time sca...

iCOM Control Training and Service Manual Code Service contacts Type U703 Address line 1 System U704 Address line 2 System U705 Address line 3 System U706 Address line 4 System Service Menu Code Setpoints Type S102 Temperature setpoint Unit S103 Humidity setpoint Unit S104 Predictive Humidity control...

iCOM Controls Training and Service Manual S407 Electrical Unit S408 Hot water On/Off Unit S409 Hot gas Unit S410 3P actuator runtime Unit S411 3P actuator direction Unit S413 Humidification enabled Unit S414 Infrared Flush Rate S415 Dehum enabled Unit S416 Electric reheat operation Unit Code Service...

iCOM Controls Training and Service Manual Computer and Network Terms Agent: A program that performs some information gathering or processing task in the background. Typically, an agent is given a very small and well-defined task. Although the theory behind agents has been around for some time, agent...

iCOM Control Training and Service Manual 165 Network Information Commonly known as: Network wire, Ethernet cable, Cat5 cable, the information following will explain the connectivity for Liebert Environmental units. Fundamentally, this section will explain the terms of networking so that you can appl...

iCOM Control Training and Service Manual How To Use The Schematics As you look at the outside edge of the electrical schematic (drawing), you will see the numbers 8 through 1 (reading left to right) across the top and bottom and the letters D through A (reading from top to bottom) along both the lef...

iCOM Controls Training and Service Manual Electrical Schematics 182769 Liebert DS iCOM Global Control 8 - 12 Ton 182770 Liebert DS iCOM Global Control 15 – 30 Ton, 380 – 575V 182771 Liebert DS iCOM Global Control 15 – 30 Ton, 200 – 230V 182772 Liebert DS iCOM Global Control 8 - 12 Ton, SCR Reheat 18...