AC Power For Business-Critical Continuity™ Liebert Distribution Monitoring (LDM) User Manual
TABLE OF CONTENTS SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 1.0 GLOSSARY OF ABBREVIATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 2.0 PRODUCT OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 3.0 MAJOR COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.5 Using the Configuration Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 5.5.1 Starting the Configuration Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 5.5.2 Main Configuration Window Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 5.5.3 Load a Configuration File from Disk. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SAFETY INSTRUCTIONS ! WARNING As with all types of electrical equipment, dangerous voltages exist within the equipment where the Liebert Distribution Monitor (LDM) is installed. For maximum safety, ensure power is removed and circuit breakers/disconnects are tagged/locked out per all applicable national, state and local electrical codes prior to working inside equipment. The area around the equipment must be free of any debris or standing water.
Glossary of Abbreviations 1.0 GLOSSARY OF ABBREVIATIONS The following abbreviations are used in this manual.
Product Overview 2.0 PRODUCT OVERVIEW The Liebert Distribution Monitor (LDM) monitors the main panelboard circuit breaker and individual panelboard branch circuit breakers. The measurements are used to report the current and alarm conditions for each breaker. The Liebert LDM utilizes branch circuit sensor modules and individual current transformers (CT) to monitor current.
Major Components 3.0 MAJOR COMPONENTS 3.1 Branch Circuit Monitoring Control Board (BCB) The BCB is the main processing and storage circuit board of the Liebert LDM. It is a DSP-based logic controller with internal flash memory and non-volatile memory. The BCB also includes a batterybacked real time clock. One of the power parameters, kilowatt-hours (kWh), data is accumulated on this board for the panelboard mains, subfeeds and each branch circuit breaker.
Major Components 3.2 Panel Board Voltage-Current Board (PBVI) The PBVI board monitors two panelboards and provides the voltage attenuators for the two panelboard voltages. The two sets of panelboard main breaker CTs are connected to the PBVI board. Connections for the 18 large branch CTs are located on the PBVI board. The nine CTs on the A side of the board are normally associated with the A-side voltages for power calculations. The B-side CTs are normally associated with the B-side voltages.
Major Components 3.3 Large Interface Board (LIB) The LIB provides the voltage attenuators for Square D I-Line panelboard voltages. The LIB monitors the current for the I-Line panelboard. The panelboard input CTs are connected to the LIB board. There are 42 CT inputs provided. The current inputs require the use of 1A secondary CT. ! WARNING Before connecting a large CT to the PBVI board, note the CT MUST have 1A secondary. Connecting a 5A secondary type CT will damage the board and the CT.
Installation 4.0 INSTALLATION ! WARNING Dangerous voltages exist in power distribution units and power conditioning units. To ensure maximum safety, all circuits breakers in the panelboard should be removed of power and the input feeder breaker should be turned off and locked-out in accordance with NEC and local/ state code. NOTE Installation of Liebert LDM components or other monitoring devices should be performed by qualified personnel only.
Installation 4.2 Installing a Solid-Core Current Transformer ! WARNING A solid-core CT cannot be installed on a wire while current is flowing through the wire. Damage to burden resistor and CT will occur. Power needs to be removed prior to installing and/or removing any CT. CTs should be installed by qualified electricians only. The CT for the panelboard main input circuit breaker is hard-wired to the connectors. Removing CT wires from the connector requires a pin extraction tool.
Installation 4.3 Connecting a Current Transformer to the PBVI Board If subfeed breakers are ordered with the unit, the phase CTs are installed and wired to the PBVI. The neutral and ground CTs are also factory-supplied and wired to the PBVI board. Since the CTs must be installed on the subfeed breaker’s neutral and ground cables, they cannot be installed in the factory. They are located in the bottom of the unit in front of the transformer.
Installation 4.4 CT Table for PBVI Board Table 2 shows the configuration of large branch circuit breakers and their CT assignments.
Installation Table 2 Wiring configuration of large branch circuit breakers (continued) Configuration 5: Four Modules With Six 3-Wire Subfeed Breaker CTs ▼ Connector P3 (A) Pins 1 2 3 4 5 6 7 8 9 Wire Color CT B W B W B W B 11 12 13 14 15 16 17 18 B W B W B W B W B W LB1 LB2 LB3 LB4 LB5 LB6 LB7 LB8 LB9 B1 C1 A2 B2 C2 A3 B3 C3 Pins A1 ▼ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Wire Color W W B W B W B W B W B W B W B W B CT
Installation 4.5 Connecting a Current Transformer to the LIB Board LIB can monitor eight 5-wire output/subfeed breakers. Two LIB boards are provided to support up to 16 output and/or subfeed breakers. If subfeed breakers are ordered with the unit, the phase CTs are installed and wired to the LIB. The neutral and ground CTs are also factory-supplied and wired to the LIB. Since the CTs must be installed on the subfeed breaker’s neutral and ground cables, they cannot be installed in the factory.
Installation 4.6 CT Table for LIB Tables 3 and 4 show the CT assignments for 10 output breaker CTs and three subfeed breaker CTs with neutral and ground being monitored.
Installation Table 4 Wiring configuration for LIB2 Pins Connector TB1 Wire Color 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 - + - + - + - + - + - + - + - + - + W B W B W B W B W B W B W B W B W B CT CT41 CT40 CT39 CT38 CT37 CT36 CT35 CT34 CT33 A11 N10 C10 B10 A10 N9 C9 B9 A9 Phase Pins Connector TB2 Wire Color 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 - + - + - + - + - + - + - + - + - + B
Operation 5.0 OPERATION The Liebert LDM is a factory-installed option to provide monitoring of the main breaker, branch circuit breakers and subfeed breakers. It may be installed in the Liebert PPC Precision Power Center, Liebert FDC, Liebert FPC and Liebert RDC Remote Distribution Cabinet. Software available on Liebert’s Web site (see 5.3 - Downloading the Software) can be installed on a desktop or laptop computer (PC) to monitor status and configure breaker parameters and alarm setpoints.
Operation 5.1 Alarms The Liebert LDM constantly monitors configured parameters for normal values. When the unit detects an alarm condition, it annunciates and displays alarm messages via the Monitor program (see 5.4 - Using the Monitor Tool). Alarms must be manually reset after the alarm condition has been corrected and may be reset through Modbus. To facilitate troubleshooting: • All alarms are stored in non-volatile memory to protect against erasure by a power outage. • Alarms are saved in an event log.
Operation 5.2 Communication 5.2.1 LDM Setup Port Connection Use the LDM Setup port to download and use the software from Liebert’s Web site for monitoring, configuration and firmware upgrades (see 5.3 - Downloading the Software). This port is not a terminal interface. To connect to the LDM Setup port: • Connect one end of a standard DB9 (female-female) null modem cable to a desktop or laptop computer (PC). • Connect the other end of the cable to the LDM Setup port on the Liebert LDM, as shown below.
Operation 5.3 Downloading the Software The Liebert LDM has three software tools for monitoring, configuration and firmware updates: • Monitoring - see 5.4 - Using the Monitor Tool • Configuration - see 5.5 - Using the Configuration Tool • Firmware updates - see 5.6 - Upgrading the Firmware These programs may be downloaded at no charge or license fee at Liebert’s Web site at: http://www.liebert.com/product_pages/ProductDocumentation.
Operation 5.4.2 Monitor Menu Options The Monitor window has a menu bar at the top with a drop-down list of options for each menu. Table 7 summarizes the options available in these menus. Menu options Table 7 Monitor menu options Menu Option Function File Menu • Exit Terminates the monitoring session and closes the Monitor program. View Menu • Event Logs Opens the Event Log window, allowing users to view a list of events for Panel A or Panel B or system.
Operation 5.4.4 Main Breaker Status The Main Breaker Status area displays RMS current, percent load (PCT), total harmonic distortion (THD), crest factor (CF), line-to-line voltage (VLL-RMS), line-to-neutral voltage (VLN-RMS), instantaneous power (Power), VA and power factor (PF) for each input phase. If any phase voltage or current is in alarm, the associated field displays white text with a red background.
Operation 5.5 Using the Configuration Tool The Configuration tool allows users to set up breakers and view or change their parameters and alarm setpoints. NOTE End users are unable to create a configuration file. Only Emerson Network Power technical personnel can create a unique configuration file. Please contact your local Emerson Network Power representative or call Liebert Services at 1-800-LIEBERT (1-800-543-2378) for assistance. 5.5.
Operation 5.5.2 Main Configuration Window Overview The Configuration window shows breakers graphically in the left pane and associated breaker data at right. Selecting a breaker in the left pane changes the display of data in the right pane. Select Panel Select View Unit Properties Panel Properties Breaker Properties Mode buttons Table 9 shows the main sections of the window, along with a description and a reference to step-bystep instructions for each.
Operation 5.5.3 Load a Configuration File from Disk A previously saved configuration file—created by Emerson Network Power technical personnel or saved from a Liebert LDM unit—may be transferred from a PC to the Liebert LDM. This feature allows for quick setup based on another unit’s configuration or replacing a configuration file in an existing installation. To upload the configuration file: • Click on the Load from File button at the bottom of the Configuration window.
Operation 5.5.6 Select Panel to View Up to two panelboards may be connected to the Liebert LDM (see 4.1.1 - Connecting Panelboards A and B). Each may be viewed in the Configuration main window. To switch the view to a different panel: • In the Select Panel box, click on Panel A for Panelboard A or Panel B for Panelboard B. The panel name appears in the Panel Name box, as in the following examples. Select Panel Select View Panel Breakers view 5.5.
Operation 5.5.8 Edit the Liebert LDM Unit Properties Unit Properties The Unit properties box displays the name, DIP switch address and software address of the Liebert LDM unit: • LDM Unit Name - a name assigned to the Liebert LDM unit. To make a change, click in the LDM Unit Name box, click Edit and enter a name, then click Apply. • DIP Switch Address - the Modbus address determined by the Modbus address DIP switch setting. The address can be changed by resetting DIP switches on S2 on the BCB.
Operation 5.5.10 Edit the Breaker Properties The Breaker Properties box displays the breaker name, rating, other parameters and alarm setpoints. Select a Breaker Breaker Properties Edit and Apply buttons Install to Unit (click to save changes to Liebert LDM) To view or change parameters and alarm setpoints of a breaker: • Click on the breaker in the left pane. When selected, the breaker has a yellow outline. • Refer to the following table to make changes.
Operation 5.5.11 Add or Delete a Circuit Breaker After moving or removing circuit breakers in the panelboard, use the Configuration tool to add or delete in the configuration. Run the configuration program using the steps outlined in 5.5.1 - Starting the Configuration Program. Once connected, the configuration file that is currently programmed will be displayed. 5.5.12 Adding a Circuit Breaker NOTE Check to make sure the location for the new breaker does NOT have a breaker assigned.
Operation 5.5.13 Adding a Subfeed Breaker NOTE Check to make sure the location for the new breaker does NOT have a breaker assigned. If it does, first remove that breaker (see 5.5.14 - Delete a Breaker), then return to this procedure. An error message appears if you attempt to add a breaker to an already assigned position. • If NOT assigned, a subfeed breaker position is shown with three Liebert logos. • An assigned subfeed breaker position appears as a picture of a 3-pole breaker.
Operation 5.5.14 Delete a Breaker Removing a breaker from the configuration is required after moving or removing circuit breakers in the panelboard. This step must be performed before adding a breaker in the same position. To delete a breaker: • Run the Configuration program (see 5.5.1 - Starting the Configuration Program). • If needed, select the panel and breaker view with the breaker to be deleted: • In the Select Panel box, click on Panel A or Panel B.
Operation 5.6 Upgrading the Firmware The Flash program is used to upgrade the firmware on a Liebert LDM unit. It uses the service terminal port to erase the old firmware, copy the new firmware and reboot the unit. NOTE Updating the firmware will not erase any configuration settings currently installed. No notice is given to customers when a new firmware version becomes available. Check Liebert’s Web site periodically for any available updates (see 5.3 - Downloading the Software).
Operation 7. If the Liebert LDM unit is detected, a confirmation window appears. Click Yes to continue and proceed to Step 8. If the Liebert LDM unit is NOT detected, an error message appears. Click OK to return to the Upgrade Firmware window. Check to verify the following, then repeat Step 6: • The correct COM Port is selected and the Baud Rate is 115200. • A serial cable is properly connected to the unit (see 5.2.1 - LDM Setup Port Connection). • The Liebert LDM unit is powered ON. 8.
Operation 9. The Upgrade Firmware window appears. Click the Download button to continue. 10. Wait for the firmware upgrade to complete. • The program erases the old image, than writes the new image, as shown below. Progress Progress Failed = 0 11. When the new image is loaded, the Flash program restarts the unit. Verify the following: • In the Summary Status box, the Number of Units should be 0 under Failed.
Specifications 6.0 SPECIFICATIONS ELECTRICAL Voltage 120 - 240 VAC (-13% to +6%) Frequency 50 and 60Hz Control Transformers Rating (Secondary Winding) 1A for Branch Circuits and Subfeeds 5A for Main Input Breaker BSM Current 0.25A to 50A CT Accuracy 2% for 1A to 50A 5% for 0.
Troubleshooting / FAQs 7.0 TROUBLESHOOTING / FAQS 1. How do I obtain the software necessary to monitor and configure the Liebert LDM? • The software package is available from Liebert’s Web site: http://www.liebert.com/product_pages/ProductDocumentation.aspx?id=72 2.
Ensuring The High Availability 0f Mission-Critical Data And Applications. Emerson Network Power, the global leader in enabling business-critical continuity, ensures network resiliency and adaptability through a family of technologies—including Liebert power and cooling technologies—that protect and support business-critical systems. Liebert solutions employ an adaptive architecture that responds to changes in criticality, density and capacity.
