Emerson iCOM user manual Application of Teamwork Modes, No Teamwork

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Teamwork

4.0TEAMWORK

Unit-2-Unit (U2U) Communications via a private network will allow the following functions to be placed into operation when the requirement exists. The user must install the correct hardware (see 5.0 - Installing a Liebert iCOM Unit-to-Unit Network) and properly program the units for the selected functionality.

The Liebert iCOM network can perform the following functions:

The Teamwork Mode functions allow for multiple stages of cooling/heating and humidifica- tion/dehumidification. Teamwork Mode can be used to prevent environmental units from “fighting,” where one environmental unit might be cooling while another unit is heating.

The Standby (Lead/Lag) function allows one or more units to be set as “Running” and “Standby” for activation in case of an alarm. This function also allows the units to be programmed in a rotation to help ensure “Standby” unit operation.

The Cascade Operation function allows additional units to be staged-on based on the temperature or humidity requirement.

4.1Teamwork Modes

Groups of cooling units connected to a network can be set up to work together in any of three team- work modes: No Teamwork, Teamwork Mode 1 and Teamwork Mode 2. All Liebert iCOM-controlled cooling units on a network must be set to run in the same Teamwork mode.

4.1.1Application of Teamwork Modes

•No Teamwork: Multiple zones in one room.

•Teamwork Mode 1: Balanced load (small groups of units inside the same environment)

•Teamwork Mode 2: Unbalanced load (large rooms, not all units will have the same load) (work well for most applications)

All units in a network will run in the same Teamwork Mode.

4.1.2No Teamwork

All cooling units work independently, responding to their own sensors.

Standby function and unit rotation are possible, but cascading is not (see Standby and Cascade on page 41). Autoset will not adjust the proportional band in Teamwork mode No.

4.1.3Teamwork Mode 1

Teamwork Mode 1 works best in small rooms with balanced heat loads. This mode does not operate based on the most demanding unit on the network. The return temperature and humidity sensor readings of all units in operation (fan on) are averaged by the master unit, Unit #1, and used for con- trol. The master unit will send the performance requests unitwise according to unit numbers, rotated by one unit every 24 hours.

In this teamwork mode most of the parameters are shared; if set in any one of the units, all other units will follow with the same settings. AutoSet will adjust the proportional band in Teamwork Mode 1, see 3.3.1 - Temperature Proportional Band.

The master unit evenly divides the system proportional band among the number of available units. Each unit will receive instruction on how to operate from the master unit based on how far the system deviates from the setpoints.

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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 Large and Small Displays FeaturesESC Icon Key Name Function Keyboard icons and functionsStatus menu, large display, graphical view Accessing Submenus on Small Displays Accessing SubmenusAccessing Submenus on Large Displays Navigating Through the Liebert iCOM MenusMenu tree-Small display, stand-alone or networked Entering a PasswordService 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 Unit/Fan Control Start Stop Single Unit FunctionsFan Alarm / Fan Protection Settings Loss of Power AlarmVSD Setpoint VSD Fan Speed Setting AutorestartPump Down High Pressure AlarmDigital 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 BandCompressor Proportional Bands Compressor ControlOne Single-Step Compressor Without Unloaders-One-Step Two Single-Step Compressors Without Unloaders-Two-StepTwo compressors with unloaders four-step Two Compressors With Unloaders-Four-StepDigital scroll capacity modulation, 10-100% variable Digital Scroll CompressorsDifferential Temperatures / Controls Comparator Circuit Temperature Control-Second Cooling SourceDelta T Temperature Difference Between Room and Glycol Chilled Water ControlSecond cooling source and compressorized cooling Reheat configuration types Temperature Control-ReheatGlycool Cooling-Free-Cooling Dual Cooling SourceHeat On ½ Dead Band 100% Off ½ Proportional Band Decreasing TemperatureSCR Reheat Tight ModeStandard Mode Humidity Control Humidification DehumidificationHumidification Humidification Infrared Humidifier Parameters for infrared humidifier controlExternal Humidifier Control-Optional Dehumidification Dehumidification With Comp settingsDehumidification Low Limit Dehumidification Compressor QuantityTemperature and Humidity Control Types Control TypesReheat During Dehumidification Humidity Sensor Reading Control Types Supply Limit-Optional High and Low, Temperature and Humidity EventsCustomer inputs User Inputs / Customer InputsEnable or Disable Time DelayEvent Types and Properties Event TypesMain FAN Overload Event notifications-large or small display Possible Event NotificationsNext Maintenance Calculation Calculation of Next Maintenance and DiagnosticsCalculating Unit Wellness General Maintenance Settings Parameters for Next Maintenance CalculationFans / Heaters / Humidifier Settings and Diagnostics Compressor 1 / 2 Settings and DiagnosticsTeamwork Modes Teamwork ModeApplication of Teamwork Modes No TeamworkTeamwork Mode 1 with two cooling units Standby and Cascade Standby Rotation Typical Standby Lead/Lag FunctionPlacement 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 Large Displays Wiring a Liebert iCOM U2U Network Small DisplaysWall-Mount Large Display Combining Large and Small Displays on a U2U NetworkWiring a small display for stand-alone operation Wiring a large display for stand-alone operation Liebert vNSA Ports available for connecting Liebert iCOM control devices298 84mm 305mm 14.25 362mm DPN001136 Rev Location Considerations Necessary Mounting ItemsMounting Instructions Liebert iCOM display dimensions Setpoints parameters Spare Part List-Large Display OnlySpare part list parameters-large display only Event log parametersSensor data Set alarms parametersActive Alarms Active alarms parametersDisplay setup parameters Total run hours parameters Timer parameters-Sleep ModeService contacts parameters Service Menu Parameters Unit diary parameters Unit Diary-Large Display OnlyMaintenance / wellness settings parameters Standby settings / lead-lag 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 GBP Network setup parametersStatic RAM Not Available, Invalid, OK HUM Steam Options setup parametersService contact info parameters Service Menu Parameters Service Menu Parameters Page Iti Ne tTi n That
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