Vertiv Liebert iCOM User Manual

Liebert® iCOM™

Installer/User Guide

Intelligent Communication and Monitoring for Liebert XDU

The information contained in this document is subject to change without notice and may not be suitable for all applications. While every precaution has been taken to ensure the accuracy and completeness of this document, Vertiv assumes no responsibility and disclaims all liability for damages resulting from use of this information or for any errors or omissions. Refer to other local practices or building codes as applicable for the correct methods, tools, and materials to be used in performing procedures not specifically described in this document.

The products covered by this instruction manual are manufactured and/or sold by Vertiv. This document is the property of Vertiv and contains confidential and proprietary information owned by Vertiv. Any copying, use or disclosure of it without the written permission of Vertiv is strictly prohibited.

Names of companies and products are trademarks or registered trademarks of the respective companies. Any questions regarding usage of trademark names should be directed to the original manufacturer.

Technical Support Site

If you encounter any installation or operational issues with your product, check the pertinent section of this manual to see if the issue can be resolved by following outlined procedures. Visit https://www.Vertiv.com/en-us/support/ for additional assistance.

Vertiv | Liebert® iCOM™Instal ler/User Guid e

TABLE OF CONTENTS

1 Getting Started with Liebert® iCOM™ 1

1.1 Touchscreen Display and User Interface 1

1.2 Touchscreen Status Dial 3

1.2.1 Dial Background Color Status Indication 4

1.3 Control Header 4

1.3.1 Powering On the Liebert® iCOM™ and Logging In/Unlocking Controls 5

1.3.2 Powering On the Thermal Management Unit 5

1.3.3 Powering Off the Thermal Management Unit 7

1.3.4 Logging Out 7

1.3.5 Setting the Date and Time 7

1.3.6 Searching 8

1.4 Using Context Sensitive Help 8

1.5 About Liebert®iCOM™ Version 8

1.6 Accessing the User, Service, and Advanced Menus 9

1.7 User Menu 9

1.7.1 User Menu Options 9

1.8 Service Menu 10

1.8.1 Service Menu Options 10

1.9 Advanced Menu 11

1.9.1 Advanced Menu Options 11

2 User Operation 13

2.1 Viewing and Editing Setpoints for the Cooling Unit 13

2.1.1 Editing Temperature Setpoints 13

2.2 Viewing Unit Alarms 14

2.2.1 To View Alarms 14

2.2.2 Silencing an Audible Alarm 15

2.2.3 Acknowledging Alarms 15

2.3 Viewing the Event Log 16

2.4 Viewing Sensor Data 16

2.5 Managing Run Hours for a Component 16

2.5.1 Setting Run Hours to Zero 16

3 Service Operation 17

3.1 Editing Setpoints for the Cooling Unit 17

3.1.1 Setpoints Options 17

3.2 Pump Control 17

3.2.1 Configuring Pump Setpoints 17

3.3 XDU Fan Control 18

3.3.1 Configuring Fan Setpoints 19

3.4 XDU Pump Lead/Lag Control 20

3.5 XDU Pump Monitoring 20

3.6 XDU Loss of Flow Control 20

3.7 Setting General Thermal Management Unit Options 20

3.7.1 Setting Miscellaneous Options 21

3.8 XDU Quick Start 22

3.8.1 Configuring Quick Start 22

3.8.2 Setting Fan Options 23

4 Managing Events: Alarms,Warnings,andMessages 27

4.1 Event Properties 27

4.1.1 Alarms and Events Panel Fields 27

4.2 Enabling Events and EditingEventSettings 28

4.3 Selecting Event Type and SettingAlarm/WarningNotification 28

4.3.1 Notification Properties 29

4.4 Enabling the Audible Alarm Notification 31

4.5 Remote Alarm Device and Customer Input Events 31

4.5.1 Setting Up Customer Input Events 31

5 External Monitoring andBuilding ManagementSystems 33

5.1 BMS and IntelliSlot Settings 33

5.1.1 Configuring BMS Communication with Embedded Unity 33

5.1.2 Setting BMS Control Settings 34

5.1.3 Setting BMS Backup Setpoints 35

5.2 Communication Setup with Embedded Unity 35

5.2.1 Connecting to the BMS 36

5.2.2 Embedded Unity User and Password 38

5.2.3 Unity Restart and Restore Defaults 39

5.2.4 System Configuration 39

5.2.5 Local Users Configuration 41

5.2.6 Network Configuration 42

5.2.7 Web Server Configuration 45

5.2.8 Remote Services Configuration 47

5.2.9 Velocity Protocol Configuration 50

5.2.10 Messaging Configuration 51

5.2.11 BACnet Protocol Setup 56

5.2.12 Modbus Protocol Setup 59

5.2.13 SNMP Protocol Setup 61

5.3 Unity Status Readings 66

5.4 Unity Support Information 66

5.4.1 Support Folder Settings 66

5.4.2 Configuring Active Networking Settings 68

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6 Configuring Auxiliary Devices 71

6.1 Power Monitoring 71

6.1.1 To Setup Power Monitoring 71

7 Administering Firmware, Settings and Security 73

7.1 Liebert® iCOM™ Firmware Upgrades 73

7.2 iCOM Firmware Upgrades 73

7.2.1 Compatibility with Earlier Versions of Liebert®iCOM™ 73

7.2.2 Updating Liebert® iCOM™ Control Board Firmware 73

7.2.3 Reverting to Firmware in Dormant Partition 75

7.3 Backing Up and Restoring Control Board Settings 75

7.3.1 Control Board Back Up and Restore Options 76

7.4 Managing Access Permission and Passwords 76

8 Performing Diagnostics 77

8.1 Cooling Unit Status LED 77

8.2 Enabling Manual Mode for Diagnostics 77

8.2.1 Disabling Diagnostics Manual Mode 78

8.3 Diagnosing Evaporator Fan Issues 78

8.3.1 Diagnostics—Evaporator Fan Options 78

8.4 Diagnosing Digital Output Issues 79

8.4.1 Diagnostics—Digital Output Options 79

8.5 Diagnosing Analog Output Issues 79

8.5.1 Diagnostics—Analog Output Options 79

8.6 Diagnosing Customer Input Issues 80

8.6.1 Diagnostics—Customer Input Options 80

8.7 Diagnosing Water Leak Detection Issues 80

8.7.1 Diagnostics—Water Leak Detection Options 80

9 Customizing the Liebert® iCOM™ Display 81

9.1 Setting General Display Properties 81

9.1.1 Unit Display Options 81

9.2 Customizing Main Display Views 82

9.2.1 Moving Content 82

9.2.2 Resizing Content 82

9.2.3 Adding and Adjusting Content 83

9.2.4 Removing Content 84

9.3 Customizing Parameter and Field Labels 84

9.3.1 Exporting, Importing, and Customizing Labels Using a Text Editor 86

10 Hardware 89

10.1 Fluid Temperature Sensor 89

10.2 Inlet and Outlet Air Sensors 89

10.3 Liebert® Liqui-tect Leak Detection 89

iii

10.3.1 Point Leak-Detention Sensor 89

10.3.2 Zone Leak-Detection Sensor 89

Appendices 91

Appendix A: Technical Support and Contacts 91

Appendix B: Setpoints and Alarm Settings by Line ID 93

Vertiv | Liebert® iCOM™Inst aller/User G uide

1 GETTING STARTED WITH LIEBERT® iCOM™

The Liebert® iCOM™ offers the highest capability for unit control, communication, and monitoring of Liebert® thermal management units. It is available factory installed on new units and assemblies or may be retrofitted in existing units.

1.1 Touchscreen Display and User Interface

The Liebert iCOM touchscreen and user interface speeds set up and installation and simplifies control of Liebert® thermal management units, literally putting cooling system monitoring and management at your fingertips.

• The resistive touchscreen is used with a firm touch, or consider using a stylus when interacting with the touchscreen.

• User and service menus are password protected to prevent unauthorized changes to cooling unit operation.

• The touchscreen is back lit and auto-dims after a period on non-use, then turns off. Touch the screen to illuminate the main screen.

• iCOM ships with default settings for efficient and effective operation of most cooling units and is easily configured to meet any need.

• iCOM menus and displays are based on the options installed on the cooling units that it monitors and manages.

Figure 1.1 Liebert® iCOM™ Main Display

Table 1.1 Main Display Controls and Options

Item Description

1 Alarms present. Displays the number of active alarms.

2 Menu icon. When unlocked, displays a menu for user or service options depending on which icon is selected.

User icon. When selected, the user optionsare available on the m ain display and menu.

NOTE: You must unlock the display with the User PIN to acces s the menu and options. See Powering On the Liebert® iCOM™and Logging In/Unlocking Controls on page5.

Service icon. When selected, the service options a re a vailable on the m ain display and menu.

NOTE: You must unlock the display with the Service PIN to access the menu and options. See Powering On the Liebert® iCOM™and Logging In/Unlocking Controls on page5.

Advanced icon. When selected, the advanced optionsare available on the main display and menu.

NOTE: You must unlock the display with the Service PIN to access the menu and read-onlyoptions. See Powering On the Liebert® iCOM™and Logging In/Unlocking Controls on page5.

6 Cooling unit parameters. Status display of selected system param eter settings. See Adding and Adjusting Content on page83

7 Unit Identification. You may customize the unit name up to six characters/numbers.

8 Search icon. O pen the keyboard to search for controls a nd setting loca tions. See Searching on page8.

9 Date/Time.

Lock/Unlock icon. Indicates whether or not the user and service optionsare accessible.

• Locked icon: display is read-only.

• Unlocked icon: user or service is logged in and options are accessible.

See PoweringOn the Liebert® iCOM™ and Logging In/Unlocking Controlson page5.

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Table 1.1 Main Display Controls and Options (continued)

Item Description

11 Secondary content panel. When accessingsettings/configuration via the menus, the settings display in the right, secondary panel.

Summary of current unit function. You can customize to showfan speed, cooling, percentages from any installed device, and any physical

(sensor) values.

13 Status Dial. Circular display of setpointsand environmental conditions of the unit. See Touchscreen Status Dial below.

Teamwork mode icon. In a panel with Status content, the Teamwork Mode icon indicates the mode selec ted. For details and descriptions of the

teamwork controls, see Team work Modes.

15 Control header. Controls to access the user and service m enus. See Control Header on the next page.

16 Status Header. Displays the alarm status, unit identification, and the current date and time.

1.2 Touchscreen Status Dial

The dial in the primary control panel displays read-only control sensors, setpoints, and environmental conditions for unit status at a glance. See Figure 1.2 below.

The center of the dial displays sensor readings and changes color according to alarm thresholds as the readings rise and fall. See Dial Background Color Status Indication on the next page.

Touching the center of the dial cycles through a set of sensor settings, and you can select the readings displayed. See

Adding and Adjusting Content on page83.

Figure 1.2 Dial Sections

Table 1.2 Dial Sections

Item Description

Control sensor and its setpoint. The sensors and setpoints displayed depend on the configuration of y our unit.

You may see only temperature control, or if the unit includes humidity control, that displays on the dial as well.

If the sensor selected for fan control is the same as that selected for temperature control, the dial displays the fa n control sensor and setpoint, as shownin Figure 1.2 above.

2 Single or multiple sensor readings. Cycle through readings by touching the displayed reading.

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1.2.1 Dial Background Color Status Indication

The background color of the dial indicates whether or not the unit is powered on, and it also responds to threshold settings of the control sensor reading. See Figure 1.3 below. Table 1.3 below describes the background color displayed if the selected sensor reading has threshold limits set.

Figure 1.3 Dial Background Colors

Item Description

1 Sensor reading is within threshold limits..

2 Unit is powered off.

3 Sensorreading is above thresholdlimit or the unit is in an alarm condition.

4 Sensor reading is below threshold limit.

Table 1.3 Background Color Displayed by Selected

Value and Threshold Limit

Sensor/Value Selected Threshold Limit Backgroun d Colo r

Return Temp

Supply Temp

None Blue

High return temperature Red

Low supply temperature B lue

High supply temperature Red

1.3 Control Header

The control header contains the controls to access the user and service settings. The display is locked when started initially and when restarted after a period of inactivity.

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1.3.1 Powering On the Liebert® iCOM™ and Logging In/Unlocking Controls

Liebert® iCOM™ is powered on when power is switched on at the cooling unit’s disconnect switch and you activate the display by touching it.

iCOM is locked when started and also locks after a period of inactivity to prevent unauthorized changes. A four- digit password is required to access the user and service menus and options, and the advance menu displays as read-only when logged in at the service level.

NOTE: The factory default inactivity period is one minute. To change the inactivity period, see Customizing Main

Display Views on page82.

NOTE: The factory default password for user and service log in are provided. We recommend you change passwords as necessary to prevent unauthorized changes. See Managing Access Permission and Passwords on page76.

• Default user password: 1490

• Default service password: 5010

To unlock the controls:

1. On the header, touch .

The keypad opens.

2. Touch the numbers/characters for your password, then touch .

Depending on the password entered and your level of access, the User and/or Service options and view only access to the Advanced menu are accessible. See Accessing the User, Service, and Advanced Menus on page9.

1.3.2 Powering On the Thermal Management Unit

NOTE: Depending on the operating state, there are start and stop priority switches that may prevent the cooling unit from operating even though power to the unit is switched on and you have turned it on via Liebert® iCOM™.

The cooling unit operates only when all switches are closed. For example, even though you have turned on the unit through iCOM, if the BMS remote monitoring system is sending a command to turn off the unit, the cooling unit remains off.

NOTE: You must be logged in to access the menu options. See Powering On the Liebert® iCOM™ and Logging

In/Unlocking Controls above.

To power on the unit:

1. Touch , then >Turn Unit On. The TURN UNIT ON dialog opens.

2. Touch Turn Unit On. The cooling unit starts and the operating status is displayed as shown in Figure 1.4 on the next page.

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Figure 1.4 Unit Status On Liebert® iCOM™ Display

Item Description

1 Current status of the unit. See Table 1.4 below.

2 Teamwork icon. See ViewingTeamwork, Standby, andCascade Status.

Table 1.4 Cooling Unit Statuses Displayed

Unit Status

Text

ALARM OFF An alarm forced the unit to turn off. See Viewing Unit Alarms on page14.

MANUAL Controlled by a service technician. See Enabling Manual Mode for Diagnostics on page77.

DISPLAY OFF

ALARM STANDBY

STANDBY In standby because of service menu setting. See Assigning Cooling Units to Standby (Lead/Lag).

TIMER OFF Scheduled on a timer and is in sleep mode waitingfor the next start interval. See Scheduling Condenser and Cooling Unit Tasks.

UNIT ON O perating normally without alarms or warnings.

WARNING ON Active warning, but still operating. See ViewingUnitAlarms on page14.

ALARM ON Active a larm, but still operating. See Viewing Unit Alarms on page14.

TIMER Scheduled on a timer to operate, and is in operating mode. See Scheduling Condenser and Cooling Unit Tasks.

REMOTE OFF

Description

Unit is turned O ff at the iCOM display. See Powering On the Thermal Management Unit on the previous page.

In standby because of a n active alarm on the unit. See Viewing Unit Alarms on page14.

Turned off by remote shutdown terminal.

Occurs when a normally closed set of 24V contacts opens. The Rem ote On/Off and Display On/Off switches are in series, and the cooling unit will only turn on if both switches are on/closed. If one is off/open, the unit turns off.

Vertiv | Liebert® iCOM™Inst aller/User G uide

Table 1.4 Cooling Unit Statuses Displayed (continued)

Unit Status

Text

MONITORING OFF

BACK-DRAFT Unit is non-operational, but EC fan is operating as a back-draft damper.

RESTART DELAY

Description

Turned off by remote monitoring system. Check the remote m onitoringdevice or call Vertiv technical support for assistance.

Not yet operational after a power c ycle because the restart delay timer is active.

1.3.3 Powering Off the Thermal Management Unit

NOTE: You must be logged in to access the menu options. See Powering On the Liebert® iCOM™ and Logging

In/Unlocking Controls on page5.

1. Touch , then >Turn Unit Off. The TURN UNIT OFF panel opens.

2. Touch Turn Unit Off. The unit begins a power off countdown and then powers off.

1.3.4 Logging Out

Log out occurs automatically when the display back light turns off for inactivity.

NOTE: The factory default inactivity period is one minute. To change the inactivity period, see Setting General Display

Properties on page81

• To log out manually, touch the lock icon. The icon indicates locked.

1.3.5 Setting the Date and Time

The correct date and time is critical for warnings, alarms, and scheduling.

1. Touch , then > Display Options > Display Properties > Date &Time.

2. Touch the date field, use the arrows to select the date, and touch OK. – or – Touch the time field, use the arrows to set the time, and touch OK.

3. Select the date and time format if necessary.

4. Touch Save.

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1.3.6 Searching

When logged in, you can use the display search to find the location of settings options based on a term, service code, or parameter. You can also search by the line ID used in the iCOM™ before the touchscreen model. For a listing of the line IDs, see Setpoints and Alarm Settings by Line ID on page93.

NOTE: You must be logged in to access the display search. See Powering On the Liebert® iCOM™ and Logging

In/Unlocking Controls on page5.

1. In the control header, touch the search field. The keyboard opens.

2. Type the term and touch . A list of locations that contain the searched term opens.

3. To go to a listed location, touch an item, then touch Go. The panel for the selected location opens.

– or –

To view the service codes and parameter entries related to the searched term, touch View Parameter Directory Entries (the number of related entries is included in the option). The Parameter Directory opens. You may further refine the search in the directory.

1.4 Using Context Sensitive Help

Touching the Help icon, , on the right-hand side of the display opens the Help drawer with information about the panel or dialog currently on the display.

You can use search and the topic index to find further information.

To close the Help drawer, touch the close arrow, .

1.5 About Liebert®iCOM™ Version

The version, build, and other firmware information for the Liebert® iCOM™ display board may be helpful when servicing or troubleshooting. To locate the firmware version of the iCOM control board, see Updating Liebert® iCOM™ Control Board

Firmware on page73.

• Touch , then > About. The ABOUT panel opens.

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1.6 Accessing the User, Service, and Advanced Menus

iCOM™ operating functions that monitor and control a cooling unit are accessed via the User and Service menus.

NOTE: You must be logged in to access the menu options. See Powering On the Liebert® iCOM™ and Logging

In/Unlocking Controls on page5.

1. To access a menu, touch the icon for the menu you want, , or , in the control header. See

Control Header on page4. The orange bar appears below the menu name when selected indicating that this is

the menu content that will be displayed.

2. Touch the menu icon, . The menu opens.

1.7 User Menu

The user menu lets you view system and unit statuses and edit some setpoints.

1.7.1 User Menu Options

Setpoints

Opens the SETPOINTS panel. See Viewing and Editing Setpoints for the Cooling Unit on page13.

Active Alarms

Opens the ALARMS panel. See Viewing Unit Alarms on page14.

Event Log

Opens the EVENT LOG panel. See Viewing the Event Log on page16.

Sensor Data

Opens the SENSOR DATA panel. See Viewing Sensor Data on page16.

Display Options

Opens the Display Options menu:

• Customize Layout: See Customizing Main Display Views on page82.

• Custom Labels: See Customizing Parameter and Field Labels on page84.

• Date & Time: See Setting the Date and Time on page7.

Total Run Hours

Opens the RUN HOURS panel. See Managing Run Hours for a Component.

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About

Opens the ABOUT panel. See About Liebert®iCOM™ Version on page8.

Turn Unit On/Off

Depending on unit’s status, open the TURN UNIT ON or TURN UNIT OFF dialog. See Powering Off the Thermal

Management Unit on page7, or Powering Off the Thermal Management Unit on page7.

1.8 Service Menu

The service menu lets you view and edit setpoints and perform many other functions.

1.8.1 Service Menu Options

Setpoints

Opens the SETPOINTS panel. See Editing Setpoints for the Cooling Unit.

Diagnostic/Service

Opens the Diagnostic/Service menu:

• Diagnostics: See Performing Diagnostics.

• Technical Support: Contact information for the cooling unit andiCOM™ display.

Alarm/Event Setup

Opens the ALARMS & EVENTS panel. See Managing Events: Alarms,Warnings,andMessages.

BMS & Teamwork

Opens the BMS & Teamwork menu:

• U2U Setup: See Configuring U2U Network Settings.

• BMS Setup: See BMS and IntelliSlot Settings on page33

Scheduler

Opens the SCHEDULER panel. See Scheduling Condenser and Cooling Unit Tasks.

Options Setup

Opens the OPTIONS SETUP panel. See Setting General Thermal Management Unit Options on page20.

Auxiliary Device Setup

Opens the Auxiliary Device Setup menu:

• Sensors: See Wired Remote Sensors.

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Backup & Security

Opens the Backup & Security menu:

• Display Backup and Restore: See Backing Up and Restoring Control Board Settings on page75.

• Control Backup and Restore: See Backing Up and Restoring Control Board Settings on page75

• Display Upgrade: See Updating Liebert® iCOM™ Control Board Firmware on page73.

• Control Upgrade: See Updating Liebert® iCOM™ Control Board Firmware on page73.

• Manage Permissions: See Managing Access Permission and Passwords.

Turn Unit On/Off

Depending on unit’s status, open the TURN UNIT ON or TURN UNIT OFF dialog. See Powering On the Thermal

Management Unit on page5, or Powering Off the Thermal Management Unit on page7.

1.9 Advanced Menu

The advanced menu provides a read-only view of the advanced set up and factory level settings.

1.9.1 Advanced Menu Options

Factory Settings

Unit code and configuration settings.

Diagnostics

Details about control and cooling operation.

Expert Settings

Parameters and settings for use by trained professionals only.

Runtime Monitoring

Details about component run times.

Control Override

Allows simulating events and override of analog outputs beyond normal limits.

Parameter Directory

A searchable list of all parameters in the user interface. See Setpoints and Alarm Settings by Line ID on page93.

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2 USER OPERATION

2.1 Viewing and Editing Setpoints for the Cooling Unit

NOTE: User level access allows viewing and editing only a limited number of setpoints. To view or adjust all setpoints, you must have service level access. See Editing Setpoints for the Cooling Unit on page17.

NOTE: Depending on the type of thermal management unit, included components, and control settings of your system, all of the options listed may not be available on your iCOM™ display.

2.1.1 Editing Temperature Setpoints

1. Touch , then > Setpoints > Temperature Control.

The TEMPERATURE CONTROL secondary panel opens.

2. Refer to User Temperature Setpoint Options below, Temperature Control—TemperatureSetpointsandCooling

Operation, then touch Save.

The setpoint is updated.

• Touch Cancel to discard the changes.

NOTE: Depending on the type of thermal management unit, included components, and control settings of your system, all of the options listed may not be available on your iCOM™ display.

User Temperature Setpoint Options

2nd Temperature Setpoint

Alternate setpoint activated by customer input (remote alarm device). When customer input connection is 2nd Setpoint, this value becomes the active temperature setpoint.

BMS Backup Temp Setpoint

Selects a temperature setpoint that activates in the event of a BMS timeout. The BMS timer must be configured for this setpoint to activate. See Setting BMS Backup Setpoints on page35.

Temperature Setpoint Act

Read-only display of adjusted temperature setpoint when one of the following is active:

• Temperature compensation

• BMS backup temperature setpoint

• Customer input setpoint (remote alarm device)

Temperature Setpoint

Supply fluid temperature that the unit maintains via fan speed change.

2 U ser Operation

2.2 Viewing Unit Alarms

The ALARMS panel lists active alarm and warning events. Table 2.1 below describes the type and state of the alarm shown by indicator dots.

Table 2.1 Alarm Status and Type Indicators

Indicator Description

Yellow dot Warning event.

Red dot Alarm event.

Circle Event condition has clea red, but still must be acknowledged. See Acknowledging Alarms on the facing page.

2.2.1 To View Alarms

1. Touch , then > Alarms. The ALARMS panel opens.

2. Touch an alarm to display the ALARM DETAILS panel.

Alarm Fields

Alarm

Name of the event.

Date

Date event was logged.

Time

Time event was logged

Alarm Detail Fields

Alarm

Name of the event.

Alarm Type

Number representing the event type.

• 1 : Warning

• 2: Alarm

Date/Time

Date and time the event was logged.

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Duration

Time elapsed since event was logged.

Threshold

Sensor reading at which an event is triggered.

Unit

Cooling unit to which the alarm applies.

Value

The current value to which the threshold is compared.

2.2.2 Silencing an Audible Alarm

Touch the screen to silence an audible alarm. If the alarm is non-latching, the alarm silences when the condition clears.

NOTE: The audible alarm must be enabled in display options to sound. See Enabling the Audible Alarm Notification on page31.

2.2.3 Acknowledging Alarms

Depending on the notification settings, alarms and warnings must be acknowledged or reset. An event is active as long as it is unacknowledged, with the exception of the network failure events described in Table 2.2 on the next page. Once acknowledged, an event remains active until the situation that triggered the event is resolved, see Table 2.1 on the previous page, for event status indicators. When an event is acknowledged and cleared, it is removed from the Alarms panel and the LED stops flashing red.

NOTE: Acknowledging alarm events does not clear them. To clear an issue, it must be corrected, reset automatically by the controller, or reset manually.

To Acknowledge Alarms

1. On the ALARMS panel, touch Acknowledge All. A check mark overlays the status indicator of the active alarms and warnings, and these automatically clear when the condition is no longer present.

• If a critical event must be manually reset, the acknowledged items are listed with a Reset All button on the ALARMS panel.

2. Touch Reset All to manually reset the condition.

2 U ser Operation

2.3 Viewing the Event Log

The event log is a list by date/time of the last 400 events generated by iCOM™ for the thermal management unit.

• On the User menu, touch Event Log. The EVENT LOG for the cooling unit opens. Table 2.2 below describes the color coded status for each event.

NOTE: Depending on the type of thermal management unit, included components, and control settings of your system, all of the options listed may not be available on your iCOM™ display.

Table 2.2 Event Status/Type Indicators

Indicator Description

Green dot Message.

Yellow dot Unacknowledged warning event. See Acknowledging Alarms on the previous page.

Red dot Unacknowledged alarm event. See Acknowledging Alarms on the previous page.

White dot withcheck-mark ov erlay Acknowledged event, the cause stillexists.

White circle Acknowledged event, the cause is cleared.

2.4 Viewing Sensor Data

The Sensor Data panel lists the standard and optional sensors monitored by iCOM™and the current reading of each sensor.

• Touch , then > Sensor Data. The SENSOR DATA panel opens.

A secondary panel displays the DAILY SENSOR READING SUMMARY, which shows temperature, humidity, and dew point readings for the cooling unit.

NOTE: Depending on the type of thermal management unit, included components, and control settings of your system, the options on your iCOM display may differ.

2.5 Managing Run Hours for a Component

You can view the run hours for components on a cooling unit, set the total run time limit, and reset total run hours to zero.

1. Touch , then > Total Run Hours. The RUN HOURS panel opens and the current hours for each component are listed in the Total Run Hours column. To reset the total run hours to zero, see Setting Run Hours to Zero below.

2. Use the slider to set the total run time limit for each component, then touch Save. The limits are set.

2.5.1 Setting Run Hours to Zero

1. On the RUN HOURS panel, touch to check each box in the Total Run Hours column next to the component(s) to reset. The Set to Zero button becomes available.

2. Touch Set to Zero. The total run hours for the selected component(s) is set to zero.

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3 SERVICE OPERATION

3.1 Editing Setpoints for the Cooling Unit

Setpoints are the means by which cooling unit operation is controlled.

NOTE: Depending on the type of thermal management unit, included components, and control settings of your system, all of the options listed may not be available on your iCOM™ display.

3.1.1 Setpoints Options

Fan Control

See Configuring Fan Setpoints on page19.

Pump Control

See Configuring Pump Setpoints below.

3.2 Pump Control

The Liebert® XDU shall utilize variable speed pumps to supply the maximum amount of fluid flow required by the server configuration. The desired pump flow rate setpoint shall be determined by the end-user. XDU shall come with two variable speed pumps, each pump operating via its own VFD. Pumps are 100% redundant of one another.

A flow meter shall monitor the actual XDU system flow rate. The flow rate value sensed by the flow meter shall be used to control the actual pump speed to match the desired system flow rate setpoint. The flow meter is mounted on the discharge (leaving) fluid line.

3.2.1 Configuring Pump Setpoints

Pump Control Options

Fluid Flow Rate @ Full Scale (%)

Flow rate corresponding to 20ma signal from the flow sensor (sensor output is 4-20ma) [Range 10-1000 lpm, default 115 lpm]

Fluid Flow Rate Setpoint (GPM)

Determines the speed output of the operating pump

Fluid Pump Initial Speed (%)

Pump speed at startup [Range 25-100%, default 25%]

Fluid Flow Proportional Band (GPM)

Value determines how aggressive the pump shall operate as flow rate deviates from fluid flow setpoint

Fluid Flow Dead Band (GPM)

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Defines the flow value where there will be no change in pump output as flow deviates from setpoint

Fluid Flow Integration Time

Serves to push or pull the flow rate back in line with set point based on how long and how far away the measured value is away from Set Point

Pump Transition Duration (sec)

Determines how long lead pump will operate while transitioning to lag pump

Pump Sequence

Determines which pump shall operate as the lead/lag. If set for Auto, pumps will operate based off run hours.

Pump Rotation Frequency (days)

Determines how often pumps will rotate from lead to lag [Range 0-30 Days, default 7 days]

Perform Pump Rotation

Forces the unit to perform a manual pump rotation

Loss of Flow Detection Delay (sec)

Delay time that must surpass in order to initiate ‘Loss of Flow’ alarm once loss of flow is detected

Fluid Check Speed Threshold

Defines how far the pump speed must change before ‘Check Fluid System’ notification is activated [Range 2-100%, default 10%]

Expected Speed Reset

Resets the expected speed 60 second timer for the ‘Check Fluid System’ notification

Minimum Fluid Flow Volume

Determines the minimum flow the system can move

3.3 XDU Fan Control

The Liebert® XDU shall utilize two EC fans to provide the maximum rated airflow at 100% fan speed. Airflow shall help determine the leaving fluid temperature from the discharge of the XDU. Both fans shall operate simultaneously at the same speed to provide the airflow needed to maintain the control setpoint for the leaving fluid temperature. The fans are not redundant of one another.

Each fan is self-monitoring and will provide a digital signal if the fan is powered but fails to operate. On the failure of one fan, the remaining fan in operation shall continue to operate and increase speed to compensate for the failed fan.

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3.3.1 Configuring Fan Setpoints

Configures fan speed control to operate independent of pumps loading (decoupled mode).

1. Touch , then > Setpoints > Fan Control. The FAN CONTROL secondary panel opens.

2. Adjust the setpoint options, then touch Save. The setpoint is updated.

• Touch Cancel to discard the changes.

Fan Control Options

Airflow Calibration

Maximum allowed fan output voltage.

Fluid T

Sensor monitoring the discharge fluid temperature will determine the fan speed output

Fan Control Sensor

Fluid T sensor monitoring the discharge fluid temperature will determine the fan speed output.

Fan Control Type

Selects the method of control for the fan motor.

• Proportional: Regulation based on the difference between the fan control sensor reading and the fan setpoint.

• PI: Regulation is based on proportional and integral terms. Provides best temperature control and helps avoid fan speed oscillation.

• Adaptive PID: Auto-tuning PID control loop, can be set for cooling or fan speed.

Fan Speed Proportional Band

Adjusts the fan speed based on the deviation from the setpoint. A smaller number causes faster reaction to temperature changes.

Fan Speed Integration

Adjusts fan speed based on time away from the setpoint to maintain accurate temperature control.

Maximum Fan Speed

Maximum percentage at which the fans will operate.

Minimum Fan Speed

Minimum percentage at which the fans will operate [15%, range 1.5 -10 v, default 1.5 v].

Proportional band adjusts fan speed activation point based on a deviation from setpoint by placing half of the selected value on either side of the fan speed control setpoint. A smaller number causes a faster reaction in fan speed.

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3.4 XDU Pump Lead/Lag Control

The two pumps in the Liebert XDU are lead/lag controlled to maintain equal runtime between the pumps, reduce corrosion, and maintain the wetted seal surfaces of the lag pump. Only one pump shall operate at any given time to provide flow. The lead/lag switchover of the two pumps is managed by the iCOM controller and shall switch operation of the pumps from lead to lag without the interruption of flow. This is accomplished by first ramping down the operation of the lead pump while simultaneously ramping up the speed of the lag pump. Pump lead/lag order can be manually switched via the iCOM display. Pump lead/lag rotation is automatically switched after seven days of continuous pump operation by default. The selectable range for pump rotation is 0 – 30 days. See Figure 3.1 below.

Figure 3.1 Pump Lead/Lag Control Chart

3.5 XDU Pump Monitoring

Each pump VFD shall receive a control signal that is used to monitor the health of the fluid system. After configuring the flow rate setpoint via the iCOM display or remote communications and the pump speed signal reaches steady state, the iCOM controller shall monitor the pump speed signal against the steady state value. In the event the pump speed signal changes to a value outside (+/-) the range of the steady state value, a threshold warning shall annunciate letting the user know to check the water system.

3.6 XDU Loss of Flow Control

Flow within the system is monitored by a unit mounted flow meter and pressure transducer pair across the pump . The two measurements are required to identify the proper action to be taken and event to annunciate (loss of flow can be a result of pump malfunction or strainer clog or valve closure). Switchover due to loss of flow shall result in a loss of flow alarm. Pump switchover shall automatically occur if a pump is active but no flow is being detected.

3.7 Setting General Thermal Management Unit Options

NOTE: Depending on the type of thermal management unit, included components, and control settings of your system, all of the options listed may not be available on your iCOM™ display.

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3.7.1 Setting Miscellaneous Options

1. Touch , then > Options Setup > Misc Settings. The MISC SETTINGS panel displays.

2. Make adjustments as needed and click Save. The option settings are updated.

• Touch Cancel to discard the changes without saving.

NOTE: Depending on the type of thermal management unit, included components, and control settings of your system, all of the options listed may not be available on your iCOM™ display.

Miscellaneous Cooling Unit Settings Options

Auto Restart Enable

When enabled, the cooling unit returns to the status at which it was operating when input power returns after a power failure. (ON if it was powered on and OFF if it was powered off before the failure.) See Automatic Restart after Power

Failure.

Cascade after Remote On

Upon a remote request for all units to start, selects whether or not the units start one after another by the Cascade Units Delay set in Teamwork Modes, see the Teamwork Control Options.

K11 Active On

Selects the action of the activated K11 (warning) relay. Options are:

• Warning: A warning is active.

• Emergency Pwr: Emergency power is on.

Loss of Power Auto Reset Delay

Defines that amount of time that must surpass in order for the Loss of Power alarm to clear or auto-reset once power has restored after power loss to the unit. When the delay time elapses, the event resets and is cleared automatically.

Operation at Temp Control Sensor Failure

Selects cooling unit operation in the event that the control temperature sensor fails.

• Shut Down: The unit shuts down on sensor failure.

• Cooling: The unit continues operation based on the select Temp Control Sensor Failure Cooling Mode.

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Single Unit Auto Restart

Selects time elapsed (in seconds) before unit restarts when Auto Restart Enable is enabled.

Temp Control Sensor Failure Cooling Mode

Unit operation when Cooling is selected at control temperature sensor failure.

• Hold: Holds the last call for cooling. That is, continue operating at same capacity.

• Full: Activates full cooling, 100% capacity.

Warning Activates Alarm Relay

When enabled, a warning event activates the common alarm relay.

3.8 XDU Quick Start

3.8.1 Configuring Quick Start

In the event of a power interruption to the iCOM™ controller, the unit components and controls shut down. Normally, after power is restored, the iCOM controller must fully boot, and no pump flow or air flow occurs until the controls have fully booted. Quick Start lets you determine the fan and pump output that the unit will provide before the controller fully boots. When configured, the unit can provide airflow and fluid flow within 10seconds after power is restored to the controller. Quick Start can be applied to fan, chilled water, and pump functions. Quick Start operates only during iCOM™ application boot, then normal controller operation resumes.

Configuring XDU Quick Start Options

QS: Use Remote Off Input

Enables/disables use of quick start feature.

Quick Start Delay (sec)

Delay time before quick start enables.

Fan Digital Output

Fan digital output status.

Fan Analog Output

Specifies the desired fan output percentage used during quick start.

Pump 1 Digital Output

Pump 1 digital output status.

Pump 1 Analog Output

Specifies the desired pump output percentage used during quick start.

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Pump 2 Digital Output

Pump 2 digital output status.

Pump 2 Analog Output

Specifies the desired pump 2 output percentage used during quick start.

Quick Start Overlap Time

Amount of time quick start will continue to operate once iCOM controller has fully rebooted.

Last Quick Start Duration

Last quick start duration details.

To Configure Quick Start

1. Touch , then > Options Setup > XDU Quick Start Settings.

The QUICK START SETTINGS panel displays.

2. Refer to Configuring XDU Quick Start Options Configuring XDU Quick Start Options on the previous page, and select the configuration options for your system.

3.8.2 Setting Fan Options

Air flow is adjustable via iCOM™ manually using a building management system (BMS) or automatically using locally installed temperature sensors.

NOTE: Thermal management units ship with the factory setting Return Sensor for the temperature control sensor and the fan speed control sensor.

1. Touch , then > Options Setup > Fan Settings. The FAN SETTINGS panel displays.

2. Make adjustments as needed and click Save. The option settings are updated.

• Touch Cancel to discard the changes without saving.

NOTE: Depending on the type of thermal management unit, included components, and control settings of your system, all of the options listed may not be available on your iCOM™ display.

Fan Settings Options

Airflow Calibration

Maximum allowed fan output voltage.

Fan Back Draft Mode

Enables/disables fan operation in back draft mode.

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Fan Shutdown Delay Timer

Length of time that the fan continues to operate after the cooling unit is turned off via the display, local control or the BMS.

The delay timer does not apply when the unit is turned off remotely.

Fanspeed at Unit Start

Speed at which the fans run on unit start up.

Fanspeed at Unit Start Timer

Length of time fans run at the speed selected in fan speed at unit start.

Fanspeed Filter at 0%

Decreases the rate at which the fan speed changes when close to or at the temperature setpoint to avoid undershooting the setpoint.

Fanspeed Filter at 100%

Increases the rate at which the fan speed changes for a quicker reaction of fan speed at high temperatures.

Fanspeed Reposition Delay

Length of time before fan speed can decrease, allowing temperature to stabilize before the change occurs.

Fanspeed Reposition Mode

Sets a one time delay that allows the fan to maintain current speed when a call to increase or decrease is made to allow the temperature to stabilize.

Fanspeed Transition Filter

Sets how quickly the fan speed changes between operating modes. Prevents an instant reaction when fans turn on or off and prevents unstable operation.

Max Deceleration Rate

Selects the rate at which the fan speed changes during deceleration.

Maximum Fan Speed

Maximum speed at which the fan will operate.

MIN at CFC for EC Fan

Cooling deviation at which the fan will operate at minimum speed.

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