Emerson Liebert iCOM- Manuals

iv TABLES Table 1 Keyboard icons and functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Table 2 User menu icons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Introduction 1 1.0 I NTRODUCTION The Liebert iCOM ™ control offers the highest capabilities in unit control, communication and moni- toring of Liebert mission-critical cooling units.Liebert iCOM may be used to combine multiple cooling units into a team that operates as a single entity, enhancing the...

Liebert iCOM Display Components and Functions 2 2.0 L IEBERT I COM D ISPLAY C OMPONENTS AND F UNCTIONS The small and the large display have a common key layout, as shown in Figure 2 . Figure 2 Liebert iCOM display components NOTE The Help key may be pressed at any time for a brief explanation of wha...

Liebert iCOM Display Components and Functions 3 Table 1 Keyboard icons and functions Icon Key Name Function On/Off Key Controls the operational state of the cooling unit. Alarm Key Silences an alarm. Help Key Accesses integrated help menus. ESCape Key Returns to the previous display view. Enter Key ...

Liebert iCOM Display Components and Functions 4 Figure 3 Status menu, large display, graphical view Figure 4 Liebert iCOM default screen symbols Evaporator Fan Speed Temperature Setpoint Humidity Setpoint Humidity Sensor Reading Supply Air TemperaturePercent Hot Water HeatingPercent Electric Heating...

Liebert iCOM Display Components and Functions 5 2.1 Navigating Through the Liebert iCOM Menus Liebert iCOM shows icons and text for monitoring and controlling your Liebert cooling units or net- work of cooling units. The number of icons and amount of text shown depends on the display size. 2.1.1 Con...

Liebert iCOM Display Components and Functions 6 2.1.3 Entering a Password To change the value of a parameter in a menu, you must first enter the password for that menu. The User, Service and Advanced menus each has a unique password to prevent unauthorized changes. The User menu password is 1490; th...

Liebert iCOM Display Components and Functions 7 Figure 6 Menu tree—Large display, stand-alone Status Menu – System View Status Menu Unit 1 View User Menu Unit 1 Password Setpoints Spare Part List Event Log Graphics View Network Set Alarms Sensor Data Active AlarmsDisplay Setup Total Run Hours Sleep ...

Liebert iCOM Display Components and Functions 8 2.1.4 Viewing Multiple Units with a Networked Large Display When you first wake up the control, press the Esc key to return to the System view Status menu. This view shows an average of all the units on the network and any alarms present. To view a spe...

Liebert iCOM Display Components and Functions 9 Figure 8 User menu icons Table 2 User menu icons Icon Name Description Available On Display Setpoints View and change temperature and humidity setpoints Small & Large Spare Part List Displays the various part numbers of the components/parts in the ...

Liebert iCOM Display Components and Functions 10 Sleep Mode Allows setback settings for non-peak operation Small & Large Service Contact Info Contains key contact information for local service, including names and phone numbers Small & Large Table 2 User menu icons (continued) Icon Name Desc...

Liebert iCOM Display Components and Functions 11 Figure 9 Service menu icons Table 3 Service menu icons Icon Name Description Available On Display Setpoints To view and change temperature and humidity setpoints Small & large Unit Diary Shows all entered program changes and maintenance performed ...

Operation 12 3.0 O PERATION 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 LC...

Operation 13 Autorestart When there is a loss of power to the cooling unit and power comes back, the unit will return to its pre- vious operating status—on if it was on before the power off, off if it was off. When power returns, the autorestart time—time-selectable: Single Unit Auto Restart (Servic...

Operation 14 3.1.3 General Compressor Requirements Low-Pressure Time Delay When the compressor starts, the low-pressure input is ignored for a selected period of time based on the setting of the Low Pressure Alarm Delay (Service Menu, Options Setup). This time is usually set to 3 minutes on air-cool...

Operation 15 Digital Scroll High Temperature A protective maximum operating compressor temperature limit is imposed on units with digital scroll compressor(s) with thermistor. Once the digital scroll temperature reaches the maximum tempera- ture threshold, the compressor will be locked out for at le...

Operation 16 3.2 Motorized Ball Valve in Digital Scroll Units On digital scroll units, discharge pressure is controlled by a motorized ball valve. During unloaded operation, pressure changes during each digital cycle could cause a pressure-controlled water regulat- ing valve to open and close an exc...

Operation 17 3.3 Temperature Control—Single Source Cooling (No Extra Cooling Coil) 3.3.1 Temperature Proportional Band The control uses the temperature proportional band to determine which operation to perform (cool- ing/heating) and how intensely to perform it. The Temperature Proportional Band is ...

Operation 18 3.3.2 Compressor Control Depending on the type of Liebert air conditioning unit you have your unit may contain one or two compressors with or without unloaders. Compressor Proportional Bands One Single-Step Compressor Without Unloaders—One-Step One single-step compressor, Cool 1, is sta...

Operation 19 Two Compressors With Unloaders—Four-Step The first two-step compressor is started unloaded at 33% calculated output from the temperature pro- portional band and stopped at 17%. At 80% Compressor 1 will be loaded, at 70% unloaded. The second compressor starts unloaded at 63% and stops at...

Operation 20 Digital Scroll Compressors A compressor with a suction cutoff unloader can only modulate its capacity between two distinct lev- els: fully loaded and half loaded. A digital scroll compressor can modulate its capacity anywhere between 10-100%. This variable capacity modulation allows coo...

Operation 21 3.3.3 Chilled Water Control The chilled water control valve is adjusted proportionally as the temperature control varies the requirement for cooling from 0% to 100%. Units with the optional variable speed drive (VSD) control the fan speed in a similar manner, except that the minimum fan...

Operation 22 The Value setting is the factory default setting on free-cooling and dual cooling units. If the tempera- ture difference between the second source cooling fluid parameter, Free-cooling Fluid Temperature (User Menu, Sensor Data) and room air is equal to or greater than the adjustable DT ...

Operation 23 GLYCOOL ™ Cooling—Free-Cooling When GLYCOOL cooling is available, the temperature control will calculate a total cooling require- ment of 200% rather than 100%. Assuming that full GLYCOOL capacity is available, the GLYCOOL valve opens proportionally as the requirement for cooling rises ...

Operation 25 3.5.2 SCR Reheat SCR reheat is a type of electric reheat that provides tighter temperature control than staged electric reheat. SCR reheat capacity modulation is achieved by pulsing the reheat On and Off. Full capacity is achieved by constantly energizing the reheat. Units equipped with...

Operation 26 Standard Mode In Standard mode, the SCR reheat operates only when the Temperature Proportional Band calls for heating. SCR reheat output is adjusted proportionally as the Temperature Proportional Band varies the requirement for heating from 0% to -100%. Compressors operate only when the...

Operation 27 3.6 Humidity Control The control uses the humidity proportional band to determine which operation to perform (dehumidi- fication/humidification) and how intensely to perform it. The Humidity Proportional Band is a user defined range that is divided into two equal parts for dehumidifying...

Operation 28 3.6.1 Humidification Infrared Humidifier There are two types of infrared humidifiers: small pan (IFS) and large pan (IFL). The operating mode of each is similar, however, some of the variables or timings differ.Infrared humidifiers are started at 100% humidification request, and stopped...

Operation 29 3.6.2 Dehumidification The Dehumidification Enable parameter (Service Menu, Options Setup) allows for enabling/disabling the dehumidification function.A call for dehumidification is calculated in the same way as a cooling request. The components (valves, compressors) will follow this de...

Operation 30 Reheat During Dehumidification Hot gas reheat or hot water reheat will start as described in 3.5 - Temperature Control—Reheat , when the temperature decreases during the dehumidification process.The parameter Electric Reheat Operation defines how the heaters react in case the temperatur...

Operation 31 Intelligent – If Intelligent Control is selected, the return air temperature/humidity is controlled at or near the setpoint. The percent temperature/humidity adjustment required is calculated based on logic that is programmed into the control. These rules simulate the actions that a hum...

Operation 32 3.7.3 Supply Limit—Optional Chilled water units may be ordered with an additional sensor for monitoring the supply air tempera- ture. This sensor maintains the minimum air temperature under a raised floor to help prevent con- densation from forming. In order to avoid supply temperatures...

Operation 33 3.7.5 User Inputs / Customer Inputs The user can connect and specify up to four inputs depending on unit configuration. The user inputs/customer inputs are digital inputs that influence the operating mode of the unit depending on the selection. The customer input configuration settings ...

Operation 34 3.7.6 Event Types and Properties Liebert iCOM events are used to inform the user of cooling unit operational status. All events are recorded in the Event Log, which is in the User Menu. The user can change the type (alarm, warn, message) and time delay of some events and can also enable...

Operation 35 Table 8 Possible event settings—some events not available in all units Event Internal Delay (Before Action Occurs) Default Delay / Selectable (Before Action Occurs) Type (default) MAIN FAN OVERLOAD 2 seconds 5 seconds / 0 – 9999 * ALM LOSS OF AIRFLOW 3 seconds 3 seconds / 0 – 9999 * ALM...

Operation 36 3.8 P OSSIBLE E VENT N OTIFICATIONS Table 9 lists alarms and warnings that may occur in a cooling unit. When any of these occur, they will appear on the Liebert iCOM Status menu and will be recorded in the Liebert iCOM Event log. Table 9 Event notifications—large or small display Event ...

Operation 37 3.9 Next Maintenance Calculation The next maintenance calculation, as well as the included diagnostics feature, will help run the cool- ing unit optimally to ensure minimum component stress resulting in maximum reliability. The diag- nostics will help the service engineer evaluate the u...

Operation 38 Parameters for Next Maintenance Calculation General Maintenance Settings • Maintenance Frequency —can be set as one to 12 months or to zero, which disables mainte- nance calculation • Max. Bonus —increases the time to next maintenance with the set value, if all components run optimally ...

Teamwork 39 4.0 T EAMWORK 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...

Teamwork 40 The number of available units is calculated like: • In non-standby configuration: all units with fan on• In typical standby function (no cascade): all units with fan on• In cascade mode: all units that could operate (no alarm, which forces the unit to switch off, unit not switched off, e...

Teamwork 41 4.1.4 Teamwork Mode 2 Teamwork Mode 2 is designed to prevent units within a group from working against each other or “fighting.” It is best applied in large rooms with unbalanced heat loads. In Teamwork Mode 2, all parameters are shared equal to Mode 1, and Unit #1 averages all of the av...

Installing a Liebert iCOM Unit-to-Unit Network 42 5.0 I NSTALLING A L IEBERT I COM U NIT - TO -U NIT N ETWORK Connecting multiple Liebert iCOM-controlled cooling units in an Ethernet Unit-to-Unit (U2U) net- work enables the units to work together to achieve efficient cooling and humidity control of ...

Installing a Liebert iCOM Unit-to-Unit Network 43 5.3 Wiring for Unit-to-Unit Communications—U2U Cooling units come from the factory-wired for stand-alone operation. Liebert iCOM U2U Ethernet Network The Liebert iCOM U2U network must be isolated from other network traffic. The network switch(es) tha...

Installing a Liebert iCOM Unit-to-Unit Network 44 5.3.1 Wiring 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 iC...

Installing a Liebert iCOM Unit-to-Unit Network 45 Figure 25 Wiring a small display for stand-alone operation Figure 26 Wiring a small display for U2U network operation 182964 Page 1 Rev. 0 Small Graphics DisplayOn Unit AccentStand-Alone Unit 6-Wire Cable P66 P67 CAN CAN iCOM Microprocessor and I/O B...

Installing a Liebert iCOM Unit-to-Unit Network 46 Figure 27 Wiring a large display for stand-alone operation Figure 28 Wiring a large display for U2U network operation 182964 Page 2 Rev. 0 E1 E3 P8 P7 TB1 Large Graphics Display On Unit AccentStand-Alone Unit 6-Wire Cable P64 P66 P67 U2U CAN CAN Lieb...

Installing a Liebert iCOM Unit-to-Unit Network 47 Figure 29 Liebert iCOM input-output control board Liebert vNSA The Liebert vNSA is designed to connect multiple Liebert iCOM control devices. The Liebert vNSA contains either one or two powered industrial rail switches. An optional remote large displ...

Installing a Liebert iCOM Unit-to-Unit Network 48 Figure 30 Liebert vNSA with optional remote large display 5.4 External Communications—Building Management Systems, Liebert SiteScan ® Liebert iCOM is capable of communicating with external monitoring systems, such as Building Man- agement Systems (BM...

Mounting a Large Display on a Wall 49 6.0 M OUNTING A L ARGE D ISPLAY ON A W ALL 6.0.1 Location Considerations Consider these factors before beginning work on a wall-mount installation: • Power supply—Liebert iCOM requires an electricity source. A factory-supplied 120VAC trans- former connects to th...

Mounting a Large Display on a Wall 50 Figure 31 Liebert iCOM display dimensions Rev. 0 1.92" (49mm) 4.17" (106mm) 4.13" (105mm) Primary Mounting Method BACK VIEW DPN000800a FRONT VIEW SIDE VIEW 3.14" (80mm) 5.2" (132mm) 4.52" (115mm) 1.4" (36mm) 1.4" (36mm) 2.11" ...

User Menu Parameters 51 7.0 U SER M ENU P ARAMETERS User menus report general cooling unit operations and status. The password for the user menu is 1490 . The iCOM control firmware is being updated constantly. As a result, the User menu parameter tables in this manual may be slightly different than ...

User Menu Parameters 52 Table 16 Set alarms parameters Function Read/ Write Range Imperial (metric) Large Display Small Display Page 1 of 1 Password PASSWORD W - Return Sensor Alarms RTN SNSR W Enabled, Disabled High Return Temperature HI TEMP W 34-210°F (1-99°C) Low Return Temperature LO TEMP W 34-...

User Menu Parameters 53 Active Alarms Permits viewing all current, active alarms. Daily Low Humidity Lo Humi R 20-80% Daily Low Humidity Lo Hu H Lo Hu M Lo Hu S R - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Table 18 Active alarms parameters Function Read/ Write Range Imperial (...

User Menu Parameters 54 Table 20 Total run hours parameters Function Read/ Write Range Imperial (metric) Large Display Small Display Page 1 of 1 Actual Hours / Limit - - - Fan Motor(s) MOTOR(S) W 0-32000 Fan Motor(s) Limit LIMIT W 0-32000 Compressor 1 COMP1 W 0-32000 Compressor 1 Limit LIMIT W 0-320...

User Menu Parameters 55 Timer Mode Type TIME TYP W System Off, DeadBand Dead Band DEADBAND W 4-27°F (2-15°C) Table 22 Service contacts parameters Function Read/ Write Range Imperial (metric) Large Display Small Display Page 1 of 1 Address line 1 Address line 1 A+B R text-string Address line 2 Addres...

Service Menu Parameters 56 8.0 S ERVICE M ENU P ARAMETERS Service menus allow customized settings for site operations. The password for service menu parame- ters is 5010. The iCOM control firmware is being updated constantly. As a result, the Service menu parameter tables shown in this manual may be...

Service Menu Parameters 57 Unit Diary—Large Display Only Shows all entered program changes and maintenance performed on the unit. VSD Setpoint VSD SET W 0-100% Page 4 of 5 Password PASSWORD W - VSD Fanspeed FANSPEED W Auto, Manual, Economy VSD Setpoint STD VSD SET W HPM: 30-100% non HPM: 60-100% VSD...

Service Menu Parameters 58 See 3.9.1 - Calculation of Next Maintenance and Diagnostics for details on these menus. Table 25 Standby settings / lead-lag parameters Function Read/ Write Range Imperial (metric) Large Display Small Display Page 1 of 1 Password PASSWORD W - Number of Standby Units #STAND...

Service Menu Parameters 61 Table 27 Diagnostics / service mode parameters Function Read/ Write Range Imperial (metric) Large Display Small Display Page 1 of 7 Password PASSWORD W - HP 1 Alarm Code HP1 CODE W 0-999 HP 2 Alarm Code HP2 CODE W 0-999 HT 1 Alarm Counter HT1 CNT W 0-999 HT 2 Alarm Counter...

Service Menu Parameters 69 TYPE - - - COMP 1 SHORT CYCLE SC1 W MSG, WRN, ALM COMP 2 SHORT CYCLE SC2 W MSG, WRN, ALM NO POWER NOP W MSG, WRN, ALM CONDENSER 1 FAILURE CN1 W MSG, WRN, ALM CONDENSER 2 FAILURE CN2 W MSG, WRN, ALM - - - - - - - - - - - - - - - - - - - - - - - - Table 29 Sensor calibration...

Service Menu Parameters 70 Freecool Sensor PTC or NTC FC SNSR W PTC, NTC Freecool Sensor FC SNSR W ±18°F (±9.9°C) Calibrated Freecool Sensor CAL FC R 4-113°F (-15 to 45°C) Supply Sensor PTC or NTC SUP SNSR W PTC, NTC Supply Sensor SUP TEMP W ±18°F (±9.9°C) Calibrated Supply Sensor CAL SUP R 32-122°F...

Service Menu Parameters 71 Netmask — W Netmask Range Gateway — W Gateway Range MAC — R MAC Range U2U Protocol — W GBP U2U Address — W 33-64 U2U Group — W 1-99 Bootloader Variables — R Not Available, Invalid, OK, Changed, Updating Bootloader Variables — W No, Save+Reboot Table 31 Network setup parame...

Service Menu Parameters 73 Table 32 Options setup parameters Function Read/ Write Range Imperial (metric) Large Display Small Display Page 1 of 3 Password PASSWORD W - Compressor Sequence COMP SEQ R Auto, 1, 2 Low Pressure Alarm Delay LP DELAY W 0-5 min Electric Stages EL HEAT W 0, 1, 2, 3 Hot Water...

Service Menu Parameters 74 Table 33 Service contact info parameters Function Read/ Write Range Imperial (metric) Large Display Small Display Page 1 of 1 Password PASSWORD W - Country Country W None Austria Switzerland D Switzerland F Benelux D Benelux FL Germany France UK Hungary Italy Poland Spain ...

Ensuring The High AvailabilityOf Mission-Critical Data And Applications. Emerson Network Power, the global leader in enabling business-criticalcontinuity, ensures network resiliency and adaptability througha family of technologies—including Liebert power and coolingtechnologies—that protect and supp...