Liebert EM manual Modem Setup and Pinout Guide, Contact Closure Cable Pinout Guide, Pinout Guides

Page 44

Pinout Guides

6.0PINOUT GUIDES

6.1Modem Setup and Pinout Guide

The OpenComms EM must be connected to a modem to send pager alerts when a sensor reading crosses a user-defined threshold (see 5.5.2 - Modem Setup for more information).

The unit is compatible with modems that have DB9 or DB25 serial COM ports. A proper cable must be constructed to allow communication between the unit and the modem. This cable connects the RJ45 connector labeled Modem on the back of the unit to the serial port on the modem.

Refer to Table 13 for a pinout guide for building the correct cable. For more information on construct- ing this type of cable, call Liebert Monitoring Application Support at 1-800-222-5877 or contact your local Liebert representative.

Table 13 OpenComms EM to DCE modem pinout guide

RJ45 Pin #

Signal Name

Description

DB25 Pin #

DB9 Pin #

 

 

 

 

 

1

DTR

Data Term Ready

20

4

 

 

 

 

 

2

CTS

Clear to Send

5

8

 

 

 

 

 

3

GND

Signal Ground

7

5

 

 

 

 

 

4

TXD

Transmit Data

2

3

 

 

 

 

 

5

RXD

Receive Data

3

2

 

 

 

 

 

6

CD

Carrier Detect

8

1

 

 

 

 

 

7

RTS

Request to Send

4

7

 

 

 

 

 

8

DSR

Data Set Ready

6

6

 

 

 

 

 

6.2Contact Closure Cable Pinout Guide

All OpenComms EM models can accommodate a contact closure cable in either sensor port. Contact closure cables are available separately from Liebert in various lengths (see Table 3).

To make your own contact closure cable, refer to Table 14 for the pinout for this cable.

•Pin 2 is the contact that may be defined as either Normally Open or Normally Closed.

•Pins 6 and 8 must be tied together to form the common.

Table 14 Contact closure cable pinout

OpenComms EM RJ45

Dry-Contact Device

 

 

1

—

 

 

2

Normally Open or Normally Closed

 

 

3

—

 

 

4

—

 

 

5

—

 

 

6

Common - tied to Pin 8

 

 

7

—

 

 

8

Common - tied to Pin 6

 

 

6.3Serial Cable Pinout Guide (EM PDU & vEM-14 Controllers)

The serial cable included with OpenComms EM PDU and vEM-14 con- trollers is designed for connecting the OpenComms EM unit to an MP Advanced power strip.

To make your own cable, refer to Table 15 for the pinout for this cable.

Table 15 Serial cable pinout - MP Advanced Power Strip

OpenComms EM RJ45

MP Advanced power strip

 

 

1

8

 

 

2

3

 

 

3

2

 

 

4

5

 

 

5

4

 

 

6

Not Connected

 

 

7

Not Connected

 

 

8

1

 

 

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Contents Liebert OpenComms EM Page Table of Contents Getting Started with the WEB Interface Pinout GuidesFigures Page Introduction Dimensions and Mounting Overview EM & EM PDU Controllers Dimensions and Mounting Overview vEM-14 ControllersPower and port indicators VEM-14see Table OverviewConnectors on Back of Unit Description of indicators and connectorsIndicators Indicators summaryInstallation Considerations InstallationUnpacking and Preliminary Inspection 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 Consult Your Network Administrator Use IPSET.exe to Assign an IP AddressAssign 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 Tabs Color-Coded StatusSummary of tab functions Color coding used in Web interfaceTemperature/Humidity Sensor Thresholds Examples of sensor limits temperature and humidity sensorsThresholds in the Web Interface Dry-Contact Sensor ThresholdsAmps Name Current Value Color MP Advanced Power Strip ThresholdsExamples of sensor limits MP Advanced power strip sensors Sensor Names and Status ButtonsSensor information name and status Buttons in the Web interfaceAddress bar Login window User Name PasswordOpen the Web Interface and Log Getting Started with the WEB InterfaceUpdate the Information View Summary DataTypes of Information Exit the Web InterfaceConfigure Sensors Sensors WindowCreate or Change Sensor Names Sensors tab Names Names for sensorsOn Sensor 1 port On Sensor 2 port Use these text boxesView Sensor Graphs Zoom in Feature Humidity sensor example Sensor graph humidity sensor examplePower Window EM PDU & vEM-14 Controllers Control ReceptaclesControl All Receptacles With One Button Control Individual ReceptaclesOn, Off, Reboot buttons Power strip port Receptacle to be linkedLink the Controls of Two Receptacles 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 Change Password Users with Read/Write access Delete a User Account Administrators OnlySecurity tab Enter & confirm password Security tab User drop-down list Delete buttonDefault gateway Sys Info WindowNetwork Connectivity Sys Info tabSnmp Information Data Presentation Serial Ports Modem Setup and Pinout Guide Contact Closure Cable Pinout GuideSerial Cable Pinout Guide EM PDU & vEM-14 Controllers Pinout GuidesDownloading Firmware Updates Specifications OpenComms EM specificationsPage Ne t ItiTi n 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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