Liebert EM manual Make Connections

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Installation

2.3Make Connections

All ports are on the back of the OpenComms EM. The port placement and port labels differ for each model. Refer to Figure 2 for your model.

2.3.1Connect Power to the Unit

•Connect the DC power adapter to the DCN/Power port on the back of the OpenComms EM, as shown in Figure 2. When power is connected, the Power indicator on the front is ON (red).

2.3.2Connect to an Ethernet Network

•Connect a straight-through CAT5 Ethernet cable from your 10 Mbit network to the Ethernet/ETH port on the back of the OpenComms EM (see Figure 2).

•When the unit is connected to an active network, the Link/Cx indicator on the front is ON (green).

2.3.3Connect to a Modem

•If using a modem, connect an RJ45 cable from a modem to the Modem port on the back of the unit (see Figure 2). Also refer to 6.1 - Modem Setup and Pinout Guide.

•When the unit is connected to a modem, the Activity/Modem/Mdm indicator on the front is ON (green).

2.3.4Connect Sensors

Use a sensor—temperature, humidity, combination temperature & humidity or water detection (see Table 3)—or a contact closure cable (see 6.2 - Contact Closure Cable Pinout Guide).

For a contact closure cable, the orange/white and white/orange wires must be tied together to form the common. The blue/white wire is the contact that may be defined as either Normally Open or Normally Closed.

•Connect a sensor or contact closure cable to any sensor port—for example, Sensor 1—shown in Figure 2. These connections may be made in any order; the ports are identical and are configured to accept and recognize all types of sensors.

•When a sensor or contact closure cable is connected properly to any sensor port, the corresponding Sensor indicator on the front is ON (green).

2.3.5Connect Serial Devices (EM PDU/vEM-14 Controllers)

Use the serial cable provided with EM PDU controllers (available separately for vEM-14 controllers), or see 6.3 - Serial Cable Pinout Guide (EM PDU & vEM-14 Controllers).

•Connect the six-wire end of the serial cable into the RS232 port of an MP Advanced power strip.

•Connect the other end (eight-wire) of the serial cable to either serial port (Serial 1 or Serial 2) of the OpenComms EM, shown in Figure 2.

•When a cable is connected properly to either port, the corresponding Serial 1 or Serial 2 indicator on the front is ON (green).

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Contents Liebert OpenComms EM Page Table of Contents Getting Started with the WEB Interface Pinout GuidesFigures Page Introduction Power and port indicators VEM-14see Table Dimensions and Mounting Overview EM & EM PDU ControllersDimensions and Mounting Overview vEM-14 Controllers OverviewConnectors on Back of Unit Description of indicators and connectorsIndicators Indicators summaryUnpacking and Preliminary Inspection Installation ConsiderationsInstallation Standard and optional components shipped with OpenComms EM44.5mm Horizontal mounting Vertical mounting Decide on Placement of the OpenComms EMMounting the Unit on a Wall EM / EM PDU Controllers Rack Mounting Mounting the Unit on a Wall or in a Rack vEM-14 ControllersWall Mounting Make Connections Assign AN IP Address Consult Your Network AdministratorUse IPSET.exe to Assign an IP Address Select a MethodUse ARP to Assign an IP Address Use Dhcp to Assign an IP AddressAddress bar Tabs Device Identification Main display Links Main Parts of the Web InterfaceWEB Interface Overview Summary of tab functions TabsColor-Coded Status Color coding used in Web interfaceThresholds in the Web Interface Temperature/Humidity Sensor ThresholdsExamples of sensor limits temperature and humidity sensors Dry-Contact Sensor ThresholdsAmps Name Current Value Color MP Advanced Power Strip ThresholdsExamples of sensor limits MP Advanced power strip sensors Sensor information name and status Sensor Names and StatusButtons Buttons in the Web interfaceOpen the Web Interface and Log Address bar Login window User NamePassword Getting Started with the WEB InterfaceTypes of Information Update the InformationView Summary Data Exit the Web InterfaceConfigure Sensors Sensors WindowOn Sensor 1 port On Sensor 2 port Create or Change Sensor NamesSensors tab Names Names for sensors Use these text boxesView Sensor Graphs Zoom in Feature Humidity sensor example Sensor graph humidity sensor exampleControl All Receptacles With One Button Power Window EM PDU & vEM-14 ControllersControl Receptacles Control Individual ReceptaclesLink the Controls of Two Receptacles On, Off, Reboot buttonsPower strip port Receptacle to be linked Linked receptacles PortRefresh Critical & Warning limits Rearm Graph see Section Configure ThresholdsPower tab Links to set thresholds Select a power strip View Power Strip Graphs Zoom in Feature Temperature sensor examplePower tab Port names Create or Change Port NamesMail Setup Alerts WindowModem Setup Snmp Trap Alerts Setup Security tab User drop-down list Enter & confirm password Security WindowCreate a New User Account Administrators Only Modify an Existing Account Administrators Only Security tab Enter & confirm password Change Password Users with Read/Write accessDelete a User Account Administrators Only Security tab User drop-down list Delete buttonNetwork Connectivity Default gatewaySys Info Window Sys Info tabSnmp Information Data Presentation Serial Ports Serial Cable Pinout Guide EM PDU & vEM-14 Controllers Modem Setup and Pinout GuideContact Closure Cable Pinout Guide Pinout GuidesDownloading Firmware Updates Specifications OpenComms EM specificationsPage Ti n Ne tIti That

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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