Emerson user manual Wiring a Liebert iCOM U2U Network Small Displays, Large Displays

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Installing a Liebert iCOM Unit-to-Unit Network

5.3.1Wiring a Liebert iCOM U2U Network Small Displays

Two cooling units, each with a small display: To network two cooling units, each with a small display, connect a crossover CAT5 cable between the P64 connectors on each cooling unit’s Liebert iCOM input/output board. A network switch is not needed (see Figure 24).

Figure 24 Connecting two cooling units, each with a small display using a crossover Ethernet cable

Three or more units with small displays: To network three or more cooling units, each equipped with a small display, connect a straight-through CAT5 Ethernet cable from the P64 connector on each cooling unit’s Liebert iCOM input/output board to a common network switch (see Figure 26).

Large Displays

A network switch is required to enable Ethernet communication on one or more cooling units with large displays. Each cooling unit with a large display requires two straight-through Ethernet cables from a network switch. One cable connects to port P64 on the Liebert iCOM input/output board and the other straight-through cable connects to the female-female coupler provided with the unit. Con- nect the red crossover cable, which is provided with the cooling unit, between the coupler and the P64 port on the back of the large display (see Figure 28).

NOTE

Only cooling units with large displays are supplied with a female-female coupler inside the unit from the factory.

Wall-Mount Large Display

Only large displays can be used for remotely monitoring and controlling cooling units connected on the same network. Each wall-mount large display requires 120V input power; Liebert provides an AC adapter wall plug. A straight-through Ethernet cable must be connected between the network switch and the P64 port on the back of the display. This will enable control and monitoring capabilities to any cooling unit connected to the network. See 6.0 - Mounting a Large Display on a Wall for mounting details and Figure 31 for wall-mount dimensions.

Combining Large and Small Displays on a U2U Network

Setting up a network of cooling units equipped with large and small displays requires a network switch. The controls are to be connected to the switch as described above.

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Contents Liebert iCOM Page Table of Contents Mounting a Large Display on a Wall Installing a Liebert Icom UNIT-TO-UNITNETWORKTeamwork 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 networkedAdvanced Menu Unit Service Menu UnitStatus Menu System View Status Menu Unit 1 View User Menu Advanced Menu Unit # Service Menu Unit #Viewing Multiple Units with a Networked Large Display 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 DownCompressor Sequencing Digital Scroll High TemperatureCompressor Timing-Units With Two Compressors MBV Operation After Compressor is Turned Off Service Offset-Changing System Pressure SettingsMotorized Ball Valve in Digital Scroll Units 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 Humidification Humidity ControlHumidification Dehumidification External Humidifier Control-Optional Humidification Infrared HumidifierParameters for infrared humidifier control Dehumidification Low Limit Dehumidification With Comp settingsDehumidification Dehumidification Compressor QuantityReheat During Dehumidification Temperature and Humidity Control TypesControl Types 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 displayCalculating Unit Wellness Next Maintenance CalculationCalculation of Next Maintenance and Diagnostics 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 CascadeMinimum Network Switch Requirements Placement of Cooling UnitsU2U Hardware Cables and Network Switch Liebert iCOM U2U Ethernet Network Wiring for Unit-to-Unit Communications-U2USample Liebert iCOM network configurations 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 Mounting Instructions Location ConsiderationsNecessary Mounting Items Liebert iCOM display dimensions Spare part list parameters-large display only Spare Part List-Large Display OnlySetpoints parameters Event log parametersSet alarms parameters Sensor dataDisplay setup parameters Active AlarmsActive alarms 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