Magnetic Levitation Module MLM | Emerson 540VDC guide

System Overview

5.1.7Magnetic Levitation Module (MLM)

The Magnetic Levitation Module provides control of the active magnetic levitation hardware.

The Liebert FS has a unique active magnetic levitation system that fully levitates the flywheel-rotat- ing group, allowing the flywheel to rotate without any physical contact. This has a number of advan- tages over mechanical bearing systems:

•Reduced drag- Mechanical bearings have a drag that is proportional to the square of the speed. The levitation system developed by Liebert uses the same power regardless of speed.

•Reliability and zero maintenance- The levitation system ensures there is no contact between the rotating parts and the housing and therefore there are no components to wear out. This ensures the unit will operate maintenance free for the life of the system.

The levitation system, works by measuring the displacement using a capacitive sensor, if the distance needs to be adjusted; the current to the electromagnet is altered to change the displacement, each axis is measured and controlled separately with its own capacitive sensor, electromagnet and feed- back loop which, is controlled by the MLM. This is all done using analog control so it is very fast act- ing and reliable. There are 5 different circuits working independently, these are: Radial: Upper X, Y; Lower X, Y and Axial: Z Only

The principle of operation is the same in each case. The upper radial Y-axis is shown in Figure 37.

Figure 37 Schematic of the levitation system

	Z
	Y
X	AMPLIFIER		AMPLIFIER
			AMPLIFIER
	ELECTRO	ROTOR	ELECTRO-
	MAGNET	ROTOR	ELECTRO-
			MAGNET
	CAPACITIVE
	DISPLACEMENT
	MEASUREMENT
		CONDITIONER
			CONTROLLER

DISPLACEMENT SIGNAL

INFRARED EMITTER

DISPLACEMENT SETPOINT

Active Magnetic Levitation Hardware

The electromagnets and capacitive displacement sensors that provide the active magnetic levitation are located within the flywheel module. See 5.1.7 - Magnetic Levitation Module (MLM) for a full description of their operation.

37	DISCONTINUED
	PRODUCT

Image 49

Emerson 540VDC manual Magnetic Levitation Module MLM, Active Magnetic Levitation Hardware

Contents

Liebert FS DC Energy Storage System DIS Product Table of Contents Operation System Overview Troubleshooting Maintenance Appendix B.0 Data Collection Module Appendix A.0 UPS Interconnection Kits Appendix E.0 Specifications Appendix D.0 Installation DrawingsAppendix F.0 Auxiliary Backup AC Power Supply Appendix C.0 Versatile Interface Board Figures Vii Versatile Interface Board mounted in the Liebert FS 110 Tables Product Important Safety Instructions Safety Precautions General Information Safety ConsiderationsRequesting Assistance from Liebert System information Liebert FS General System Description Liebert FS Unit DC Bus LoadsLiebert FS Unit N General Specifications Battery NLiebert FS Unit N Key Technological Features Features and BenefitsKey Customer Benefits Applicable Standards and Certification KW-sec delivered GTX model, 520 VDC, with filter Output Power vs. Ride-Through Time Vbus=540V, Vreg=520V Bypass Utility Static SwitchRectifier Environmental Considerations System Location Electrical Considerations Flooring Requirements Status/Control Connections AC Power ConnectionsGrounding Connections Remote Monitoring Connections-Optional Unloading Inspection Before Removal From the Truck14623 Unpacking Handling Removing the metal support plates Lifting the Liebert FS cabinet Positioning the Liebert FS Storing the Liebert FS for Delayed InstallationMoving the Liebert FS Manuals Serial Number Model Number Plates Bottom TopFront Right Side 12-100120-09 Front Right Side Door open Panel removed Internal layout Floor Mounting Bracket Cabinet Floor Mounting Concrete, Masonry or Stone Floor Mounting Instructions Mounting Tools Checking hole depth 12.7mm Floor to Flange Bolt securing bracket to cabinet Bubble level Mounting front bolts-front side of cabinet Wood Floor Mounting Parts Wood Floor MountingWood Floor Mounting Tools Wood Floor Mounting Instructions Raised Floor Mounting Tools Raised Floor Mounting Raised Floor Mounting KitRaised Floor Mounting Instructions General Wiring Considerations Wiring ConnectionsFront Rear Circuit Breaker Mounting Plate Control Communication Access Panel DC and Ground Connections Ground Connections Ground Wire Gauge Tightening Torque Approximate metric InchTightening torque for ground connection Pounds Service panel location AC Auxiliary Control Power Supply Connections Terminal Neutral Ground Terminal 2 Line Fused disconnect Remote monitoring DCM connections inside cabinet front door Startup Considerations Liebert FS front view Detailed System Description System Module Description Power Conversion ModuleControl Panel UPS Interconnection Kit Electrical system schematic Power SystemBattery Input Magnetic Levitation Data Collection Module DCM User interfaces Control PanelVersatile Interface Board VIB Igbt Power Conversion Module PCM Active Magnetic Levitation Hardware Magnetic Levitation Module MLM Upper Radial Axial Electromagnet Motor Generator Rotor/Flywheel-Rotating Group Vacuum system operation Vacuum System Flywheel Sensors Speed Temperature Outer Housing Rotating Group Inner Housing Coolant System SafetyCabinet List of System User-Configurable Parameters Max Charge Current Voltage Behavior Current Sink Regulation Voltage Delta During Discharge Vreg Delta Vreg delta help screen Modes of Operation Standby Mode OFF ModeStartup Mode UPS DC Bus Voltage = Vcharge Ready Mode Charge ModeVoltage ≥ Vcharge Shutdown Mode Discharge ModeFollowing a Liebert FS Discharge Down to SOC = 0% Coast Mode Following a User CommandFault Mode Typical operation modes KEY # Mode Description Maintenance and Reliability Operator Controls Access System History System Mode Indicators System Status IndicatorsControl Panel Control panel keyboard layout refer to Figure Main screen function descriptions System Status Indicators System Mode IndicatorsSystem status indicators Operation modes Uninstalled DisabledOther Status Indicators Operative Menu Tree and Navigation Security Access Menu tree Navigation and Operation of Control Panel System Setup and Parameter Access 2V REG Time/Date View Voltages TemperaturesHistory Discharge history Fault history, Event list screen Vitals history view Options Networks view Network-Requires DCM Option Vitals ElectricalSecurity Password screens Tools About System Startup Initial System Startup ProcedureInspection before Initial System Startup Control Parameter Value Default Control Parameters Setup at Initial System StartupControl parameters Software versions Powering Up the Liebert FS Regular Startup ProcedureBooting Up Inspection Before Regular Startup Validation of Control Parameters Setup Shutdown ProcedureInitiating Liebert FS Startup Sequence Liebert FS Startup Sequence Safety Precautions Routine Maintenance Liebert Services Maintenance schedule Maintenance ScheduleFrequency Service Every Item/Action Yrs Record Log Optional Air Filters Torque specifications unless otherwise labeledTorque Requirements Detecting Trouble Corrective Actions Reporting a ProblemRecommended Test Equipment Limited Life Components User level menu General Button F5 Ore information Auxpower Meaning / Possible Causes Troubleshooting Label Bus Power FaultsOre information Fault Clear Button F3 Button F5 BUS Current Offset Faults-causes and responses Troubleshooting Fault Label Troubleshooting Action Appendix A.1.1 General Wiring Considerations Appendix A.1 Wiring ConnectionsKey to UPS model interconnection Liebert FS Model # Use With Liebert UPS Top view of Liebert FS Cabinet with UPS interconnection kit Rear Circuit Breaker Torque Appendix A.1.2 DC Power ConnectionsLiebert FS Positive Terminal Negative UPS Output Rating KVA Liebert Series 610/600T/600 model ratings Yellow Blue Two rows Row for Liebert FS Software Control Parameter Setting Liebert FS Software Control Parameter settings Liebert FS Npower UPS Liebert Npower model ratingsOutput Rating Liebert FS Software Control Parameters Liebert FS Software Setting Control ParameterSee Table Product Liebert Series 300 UPS List of Liebert Series 300 models ratings Liebert Series 300 status/control terminal block wiring 395VDC Liebert HiPulse model ratings Appendix A.5.1 Description-HiPulse UPS Interconnection Kit Liebert FS positive terminal Liebert FS negative terminal Appendix A.5.3 IKIT-A05 DC Power Connections UPS Output Rating kVA 120 Appendix A.5.5 Single Liebert FS on UPS DC Bus Multiple Liebert FS Parallel Operation-Regular Configuration Appendix B.1.2 Features Appendix B.2 DCM Installation and ConfigurationAppendix B.2.1 Installation Appendix B.1 General Information Appendix B.2.2 DCM Requirements LAN Connection Power Connection Home Done Appendix B.2.4 Configuring DCM System Parameters Appendix B.2.3 Accessing the DCMEnter IP Address Appendix B.3.1 Logging into the DCM Appendix B.3 DCM OperationAppendix B.3.2 Status and Detailed Status Screens Datafiles screen Appendix B.3.3 Datafiles Screen Appendix B.4.1 DCM Troubleshooting Principles Appendix B.4 DCM TroubleshootingAppendix B.4.2 Resetting the DCM Troubleshooting Appendix C.1.1 Versatile Interface Board Overview Appendix C.1 General Information-Versatile Interface Board VIB I/O functions Interface VIB Designation Description Appendix C.1.2 VIB Features Label X20 Appendix C.2.1 VIB Installation Appendix C.2 VIB Installation and ConfigurationAppendix C.2.3 VIB Input Specifications Appendix C.2.4 VIB Output Specifications Appendix C.3 VIB Operation Appendix C.4.2 VIB in Disabled or Not Available State Appendix C.4 Troubleshooting the VIBAppendix C.4.1 UIB State Not Displayed on the Front Panel Appendix C.4.3 Inputs Not Recognized Appendix D.1 Liebert FS Flywheel Submittal Document Matrix Storage Solution Flywheel Storage SolutionSubmittal documents accompanying Liebert FS Appendix D.2 Other Liebert FS Drawings No UVR, circuit breaker to terminal block wiring Electrical connections Electrical system block diagram 48 UVR, circuit breaker to terminal block wiring 24 UVR, circuit breaker to terminal block wiring Outline drawing, Liebert FS cabinet Fused Liebert FS FS cabinet to Liebert Series 610 UPS module Control Metal Support Front Elevation drawing-Liebert FS cabinet 124 NEG Mechanical Weight 1300 lb .6kg NEG POS GND Line drawing, three Liebert FS systems in parallel configuration Breaker + GND With Liebert UPS Liebert UPS Module + GND With factory-integrated circuit Parallel with a Liebert UPS Module Liebert UPS Module Status/control Wiring, multiple units Wiring specifications, Liebert FS and Liebert Series Wiring specifications, Liebert FS and Liebert Npower Wiring specifications, Liebert FS and Liebert Series 140 29-1/2 749mm Bolts and Washers come with cabinet Drill Template Dwg Liebert FS block diagram Power line diagram Liebert FS Cabinet Liebert FS Cabinet Unit NUnit N Input Bus Unit N Input UPS cable entry-top TOP View Technical specifications Appendix E.0 Specifications Items Required Appendix E.1 Ground Test Procedure Appendix F.3 Recommended Backup Power Supply Configuration Appendix F.2 Backup AC Power Supply SpecificationAppendix F.1 Overview Frequency 50 to 60Hz Grid supply DC bus Battery Liebert FS PackGrid Appendix F.3.2 Operating the Liebert FS Without Batteries Liebert FS Flywheel module Appendix F.4 Scenarios 154 DIS Product Locations