Liebert EM manual Introduction

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Introduction

1.0INTRODUCTION

The Liebert OpenComms™ EM is a compact, half-duplex device designed to monitor temperature, humidity, water detection and contact closure and notify personnel when those conditions exceed user-defined limits.

The OpenComms EM is available in several models, which vary in size and number and types of ports. All models have sensor ports to monitor temperature, humidity, water detection and contact closure, and all models have either an external or built-in temperature/humidity sensor:

• EM

• has two sensor ports

Controller

• ships with an external sensor to detect temperature only (TMNET kit) or

 

both temperature and humidity (THCMNET kit)

•has no serial ports

•takes up zero U rack space

•EM PDU • has two sensor ports

Controller • ships with an external sensor to detect temperature only (TMPDUNET kit) or both temperature and humidity (THCMPDUNET kit).

•has two serial ports to monitor Liebert MP Advanced Power Strips

•takes up zero U rack space

•vEM-14 • has four sensor ports

Controller • has a built-in temperature and humidity sensor

•has two serial ports to monitor Liebert MP Advanced Power Strips

•has 10 dry contact inputs

•takes up 1U rack space

Sensor Ports

The OpenComms EM has sensor ports capable of monitoring temperature, humidity, water detection and contact closure through sensors that may be purchased separately (see Table 3). The unit’s auto- sensing capability can determine which type of sensor is connected, making the unit ready to plug into your operation. Default settings for alarm limits may be changed through a Web interface.

Ethernet Ports

The unit has an Ethernet port for connection to a network, which provides access to the Web interface and the capability of receiving alerts when monitored conditions reach alarm status. The OpenComms EM may also be configured to send e-mail alerts and SNMP traps over the network.

Modem Port

A modem port provides the capability of sending pager messages to notify personnel of alarm condi- tions in the monitored area.

Web Interface

A Web interface makes it easy to view monitoring data in tabular and graphic formats, configure the device for alarm thresholds and set up automatic e-mail and pager notifications when a level in a monitored area crosses a predefined threshold.

Serial Ports (EM PDU / vEM-14 Controllers)

EM PDU and vEM-14 controllers have two serial ports that are ideal for monitoring Liebert Managed Power (MP) Advanced Power Strips. Power, voltage, current and temperature levels can be monitored with user-configured alarm thresholds. In addition, some MP Advanced Power Strip models allow each receptacle on the power strip to be turned on or off through the Web interface.

Typical Applications

An OpenComms EM is highly useful in monitoring:

•Enclosures, particularly those housing electronic equipment such as servers or telephone switching equipment sensitive to temperature, humidity and power fluctuations

•Process Areas, such as areas where environmentally sensitive chemical reactions occur

•A closet or an area of a room where temperature levels are important, for example, an area that houses many servers, where you want to verify the area or closet doesn’t get too hot

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Contents Liebert OpenComms EM Page Table of Contents Pinout Guides Getting Started with the WEB InterfaceFigures Page Introduction Overview Dimensions and Mounting Overview EM & EM PDU ControllersDimensions and Mounting Overview vEM-14 Controllers Power and port indicators VEM-14see TableDescription of indicators and connectors Connectors on Back of UnitIndicators summary IndicatorsStandard and optional components shipped with OpenComms EM Installation ConsiderationsInstallation Unpacking and Preliminary InspectionMounting the Unit on a Wall EM / EM PDU Controllers Decide on Placement of the OpenComms EM44.5mm Horizontal mounting Vertical mounting Wall Mounting Mounting the Unit on a Wall or in a Rack vEM-14 ControllersRack Mounting Make Connections Select a Method Consult Your Network AdministratorUse IPSET.exe to Assign an IP Address Assign AN IP AddressUse Dhcp to Assign an IP Address Use ARP to Assign an IP AddressWEB Interface Overview Main Parts of the Web InterfaceAddress bar Tabs Device Identification Main display Links Color coding used in Web interface TabsColor-Coded Status Summary of tab functionsDry-Contact Sensor Thresholds Temperature/Humidity Sensor ThresholdsExamples of sensor limits temperature and humidity sensors Thresholds in the Web InterfaceExamples of sensor limits MP Advanced power strip sensors MP Advanced Power Strip ThresholdsAmps Name Current Value Color Buttons in the Web interface Sensor Names and StatusButtons Sensor information name and statusGetting Started with the WEB Interface Address bar Login window User NamePassword Open the Web Interface and LogExit the Web Interface Update the InformationView Summary Data Types of InformationSensors Window Configure SensorsUse these text boxes Create or Change Sensor NamesSensors tab Names Names for sensors On Sensor 1 port On Sensor 2 portView Sensor Graphs Sensor graph humidity sensor example Zoom in Feature Humidity sensor exampleControl Individual Receptacles Power Window EM PDU & vEM-14 ControllersControl Receptacles Control All Receptacles With One ButtonLinked receptacles Port On, Off, Reboot buttonsPower strip port Receptacle to be linked Link the Controls of Two ReceptaclesPower tab Links to set thresholds Select a power strip Configure ThresholdsRefresh Critical & Warning limits Rearm Graph see Section Zoom in Feature Temperature sensor example View Power Strip GraphsCreate or Change Port Names Power tab Port namesAlerts Window Mail SetupModem Setup Snmp Trap Alerts Setup Security Window Security tab User drop-down list Enter & confirm passwordCreate a New User Account Administrators Only Modify an Existing Account Administrators Only Security tab User drop-down list Delete button Change Password Users with Read/Write accessDelete a User Account Administrators Only Security tab Enter & confirm passwordSys Info tab Default gatewaySys Info Window Network ConnectivitySnmp Information Data Presentation Serial Ports Pinout Guides Modem Setup and Pinout GuideContact Closure Cable Pinout Guide Serial Cable Pinout Guide EM PDU & vEM-14 ControllersDownloading Firmware Updates OpenComms EM specifications SpecificationsPage That Ne tIti Ti n

EM specifications

The Liebert EM is a state-of-the-art, modular and scalable cooling solution designed to meet the needs of today's data centers and IT environments. This innovative unit offers unmatched precision and flexibility, making it ideal for facilities that require meticulous temperature control and energy efficiency.

One of the main features of the Liebert EM is its modular design, allowing for easy expansion and customization based on the specific requirements of a facility. This scalability ensures that organizations can efficiently adapt to changing cooling demands without the need for significant infrastructure changes. The system can be configured in various capacities, making it suitable for spaces of different sizes and cooling needs.

Incorporating advanced technologies, the Liebert EM utilizes inverter-driven compressors, allowing for variable refrigeration capacity. This feature optimizes energy consumption, reducing operational costs while maintaining precise temperature control. The unit is designed with built-in smart controls that enable real-time monitoring and adjustments, ensuring enhanced performance and efficiency across the entire cooling system.

The Liebert EM also comes equipped with EC (Electronically Commutated) fans, which contribute to its energy efficiency by adjusting their speed according to the cooling load. This not only ensures adequate airflow but also minimizes energy waste, leading to lower overall operating costs.

Furthermore, the system features intelligent connectivity options that facilitate integration with existing building management systems. This capability allows for centralized monitoring and control, empowering facility managers to maintain optimal conditions and respond quickly to any fluctuations in temperature or humidity.

Safety and reliability are also paramount in the design of the Liebert EM. The unit includes comprehensive backup systems and redundancy features to ensure continuous operation even in the event of a component failure. This reliability is crucial for critical applications where downtime can result in significant losses.

In summary, the Liebert EM stands out as a versatile and high-performance cooling solution, equipped with advanced technologies that offer scalability, energy efficiency, and precise temperature control. Its modular design, coupled with intelligent control options, makes it an essential component for modern data centers looking to optimize their cooling infrastructure while ensuring reliability and reducing operational costs.
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