Emerson iCOM user manual Single Unit Functions, Unit/Fan Control Start Stop

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Operation

3.0OPERATION

The Liebert iCOM display for your Liebert cooling unit features an easy-to-use, menu-driven liquid crystal display (LCD). All unit settings and parameters can be viewed and adjusted through three menus: User, Service and Advanced. All active alarms are displayed on the LCD and annunciated.

The control is shipped from the factory with default selections for all necessary settings. Adjustments can be made if the defaults do not meet your requirements.

References to menu items in this manual are followed by the main menu and the submenu where they can be found.

For example:

•Temperature Setpoint (User Menu, Setpoints) - The Temperature Setpoint parameter is located in the User menu under the Setpoints submenu.

•High Return Humidity (Service Menu, Set Alarms) - The High Return Humidity alarm is located in the Service menu under the Set Alarms submenu.

3.1Single Unit Functions

3.1.1Unit/Fan Control Start - Stop

Unit on means the fan output is activated. The unit can be switched On and Off from two inputs:

1.Remote on/off input

2.Display button

Pressing the On/Off key on a small display will control only the cooling unit it is connected to regard- less, of whether the cooling unit is a stand-alone unit or part of a network.

Pressing the On/Off key on a large display of a stand-alone cooling unit will control only that unit.

The effect of pressing the On/Off key on a large display connected to a network depends on the view: System or Unit.

•In System view, pressing the On/Off key shows a warning asking for confirmation to shut down the entire system.

•In Unit view, pressing the On/Off key affects only the unit being viewed, without a confirmation request.

Each time a unit is powered on or off, an event is added to the Event Log in the User menu.

NOTE

Customer switches: remote On/Off (if used) and display On/Off switches are in series. A cooling unit will start only if both switches are On; if one of these switches is Off, the unit will stop. Safety devices within the unit are also in series and will shut the unit down if required.

Figure 10 Start-stop priority switches

Remote On / Off

Display On / Off

NOTE

If Remote On/Off is not used, a jumper is inserted to bypass the switch.

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Contents Liebert iCOM Page Table of Contents Installing a Liebert Icom UNIT-TO-UNITNETWORK TeamworkMounting a Large Display on a Wall Figures Tables Features Large and Small DisplaysESC Keyboard icons and functions Icon Key Name FunctionStatus menu, large display, graphical view Accessing Submenus on Large Displays Accessing SubmenusAccessing Submenus on Small Displays Navigating Through the Liebert iCOM MenusEntering a Password Menu tree-Small display, stand-alone or networkedService Menu Unit Status Menu System View Status Menu Unit 1 View User MenuAdvanced Menu Unit Service Menu Unit # Viewing Multiple Units with a Networked Large DisplayAdvanced Menu Unit # SET User menu icons Service menu icons Single Unit Functions Unit/Fan Control Start StopVSD Setpoint VSD Fan Speed Setting Loss of Power AlarmFan Alarm / Fan Protection Settings AutorestartHigh Pressure Alarm Pump DownDigital Scroll High Temperature Compressor Timing-Units With Two CompressorsCompressor Sequencing Service Offset-Changing System Pressure Settings Motorized Ball Valve in Digital Scroll UnitsMBV Operation After Compressor is Turned Off Temperature Proportional Band Temperature proportional bandOne Single-Step Compressor Without Unloaders-One-Step Compressor ControlCompressor Proportional Bands Two Single-Step Compressors Without Unloaders-Two-StepTwo Compressors With Unloaders-Four-Step Two compressors with unloaders four-stepDigital Scroll Compressors Digital scroll capacity modulation, 10-100% variableDelta T Temperature Difference Between Room and Glycol Temperature Control-Second Cooling SourceDifferential Temperatures / Controls Comparator Circuit Chilled Water ControlSecond cooling source and compressorized cooling Glycool Cooling-Free-Cooling Temperature Control-ReheatReheat configuration types Dual Cooling SourceOff ½ Proportional Band Decreasing Temperature Heat On ½ Dead Band 100%Tight Mode SCR ReheatStandard Mode Humidity Control Humidification DehumidificationHumidification Humidification Infrared Humidifier Parameters for infrared humidifier controlExternal Humidifier Control-Optional Dehumidification Low Limit Dehumidification With Comp settingsDehumidification Dehumidification Compressor QuantityTemperature and Humidity Control Types Control TypesReheat During Dehumidification Humidity Sensor Reading Control Types High and Low, Temperature and Humidity Events Supply Limit-OptionalUser Inputs / Customer Inputs Customer inputsEvent Types and Properties Time DelayEnable or Disable Event TypesMain FAN Overload Possible Event Notifications Event notifications-large or small displayNext Maintenance Calculation Calculation of Next Maintenance and DiagnosticsCalculating Unit Wellness Fans / Heaters / Humidifier Settings and Diagnostics Parameters for Next Maintenance CalculationGeneral Maintenance Settings Compressor 1 / 2 Settings and DiagnosticsApplication of Teamwork Modes Teamwork ModeTeamwork Modes No TeamworkTeamwork Mode 1 with two cooling units Standby Rotation Typical Standby Lead/Lag Function Standby and CascadePlacement of Cooling Units U2U Hardware Cables and Network SwitchMinimum Network Switch Requirements Wiring for Unit-to-Unit Communications-U2U Sample Liebert iCOM network configurationsLiebert iCOM U2U Ethernet Network Wall-Mount Large Display Wiring a Liebert iCOM U2U Network Small DisplaysLarge Displays Combining Large and Small Displays on a U2U NetworkWiring a small display for stand-alone operation Wiring a large display for stand-alone operation Ports available for connecting Liebert iCOM control devices Liebert vNSA298 84mm 305mm 14.25 362mm DPN001136 Rev Location Considerations Necessary Mounting ItemsMounting Instructions Liebert iCOM display dimensions Spare part list parameters-large display only Spare Part List-Large Display OnlySetpoints parameters Event log parametersSet alarms parameters Sensor dataActive Alarms Active alarms parametersDisplay setup parameters Timer parameters-Sleep Mode Total run hours parametersService contacts parameters Service Menu Parameters Unit Diary-Large Display Only Unit diary parametersStandby settings / lead-lag parameters Maintenance / wellness settings parametersWellness COMP2 Wellness HEAT2 Diagnostics / service mode parameters ALM REL 7of Delay Enable Disab Enable Disab Comp 1 Overload Unit X Disconnected WRN Loss of Power LOP MSG, WRN, ALM Call Service MSG, WRN, ALM High Temperature Sensor calibration / setup parameters System / network setup parameters-large display only Network setup parameters GBPStatic RAM Not Available, Invalid, OK Options setup parameters HUM SteamService contact info parameters Service Menu Parameters Service Menu Parameters Page Ti n Ne tIti That