GE LM10, Motor Protection System instruction manual Δ = phase current - average current

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Δ= phase current – average current

CHAPTER 4: FUNCTIONALITY

CONFIGURATION SETTINGS

•FLA (full load current) The LM10 Motor Protection System is designed to work in conjunction with a spectrum of motor starters. Therefore it handles full load currents ranging from 1.2 to 800 amps. The correct FLA for the motor in use must be programmed for relay protection to function properly.

Enter the full load current (FLA) of the motor. The LM10 will not accept full load currents that exceed the CT or sensor pack rating; however, lower values are acceptable. For best results, enter the proper FLA for the motor being used. Refer to Overcurrent Fault Conditions on page 4–25for additional details.

•Ground Setup: A zero-sequencing ground fault can be enabled to trip and operate a separate ground fault relay when ground fault current exceeds the Ground Setup Fault setpoint. The Ground Setup Time Delay setting is from 0.5 to 2.5 seconds. Ground current can be continuously monitored at the PDU or over the network.

A ground fault CT or sensor shall be connected for this protection.

•JAM Setup: According to NEMA or IEC MG 1-1998 part 12, page 21, “polyphase motors 600 V or less not exceeding 500 hp shall be capable of withstanding a current not less than 1.5 times the full load rated current for not less than two minutes when the motor is at normal operating temperature.” For relatively low overcurrent conditions, particularly on higher NEMA class motors, trip times could be considerably longer than 2 minutes. Therefore, a separate jam fault is available as the standard time overcurrent curve may not protect in this range.

The user may set a JAM Setup Fault level of 100 to 250% of FLA or disable this function. The default setting is set to disabled.

The overcurrent curve cannot be disabled. Therefore, if the JAM Setup Time Delay is set greater than the time allowed by the standard trip curve, the LM10 will trip before a Jam condition can be reached. See Trip Curve with Jam and Stall Enabled on page 4–27for an example of the effect of trip times.

•STALL Setup: Cold motor trip times for a 6 ⋅ FLA fault are determined by trip class. For example, a NEMA class 20 motor at 6 ⋅ FLA would trip in 20 seconds. A separate Stall fault is available which would allow the user to reduce the trip time for large overcurrent situations.

The user may set a STALL Setup Fault level of 330 to 600% of FLA or disable this function. The default setting is disabled.

The overcurrent curve cannot be disabled. Therefore, if the STALL Setup Time Delay is set greater than the time allowed by the standard trip curve, the LM10 will trip before a stall condition can be reached. See Trip Curve with Jam and Stall Enabled on page 4–27for an example of the effect of trip times.

•CurUnB Setup (current unbalance setup): The LM10 monitors the three current phases and trips if the phases are unbalanced. In addition to phase A, B, and C current, this function takes FLA, CT ratio and number of passes/turns through the CT into account. If the average current exceeds FLA, then this average value is used in the formula instead of the FLA value. The formula is:

Δ= phase current – average current

The next formula uses the largest Δ of the three phases. unbalance level = (Δ ⁄ FLA) ⋅ 100%

(EQ 4.1)

(EQ 4.2)

The default CurUnB Setup Fault value is “Disabled” since not every application will require current unbalance monitoring. The current unbalance is programmable between 2 to 25% of FLA.

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Contents 1601-0165-A6 LM10 Motor Protection System Instruction ManualGE Consumer & Industrial Multilin2008 GE Multilin Incorporated. All rights reserved 3 INTERFACE Table of Contents2 INSTALLATION 1 INTRODUCTIONAPPENDIX 4 FUNCTIONALITY5 COMMUNICATIONS 6 MISCELLANEOUSA-17 INDEX1-IV LM10 Motor Protection System Chapter 1 Introduction 1.1 Description1.1.1 The LM10 Relay 1.2.3 Relay Outputs 1.2.1 Features1.2 Overview 1.2.2 Current and Voltage Inputs1.2.4 Power Supply 1.2.5 Block DiagramFIGURE 1-1 Functional Block Diagram 1.3.1 Programming and Display Unit 1.3 Features1.3.2 LED Indicators 1.3.3 SwitchesBaud Rate Changes to switch settings will not take effect until power is cycledDIP Switch Position FIGURE 1-2 LM10 FeaturesLM10 1.4 Ordering1.4.1 Order Codes Table 1-1 LM10 Order Codes1.5.1 Protection Elements SpecificationsGROUND FAULT PHASE CURRENT1.5.3 Control Functions POWERPOWER FACTOR POWER SUPPLY200 to CONTACT INPUTStop, Reset, DeviceNet control 0 to 1201.5.6 Outputs 1.5.5 CT DimensionsGround fault CT Thermal overload CT1.5.8 EnvironmentalApprovals/Certification SERIAL COMMUNICATIONS1-12 2.1.2 RS232 Port LM10 Motor Protection System Chapter 2 Installation2.1 Wiring 2.1.1 DeviceNetTable 2-1 Control Connections 2.1.3 Control Terminals2.1.4 Sensor Pack Input 2.1.5 Wiring DiagramCHAPTER 2 INSTALLATION FIGURE 2-4 LM10 Wiring Diagram2.2.1 LM10 Mounting 2.2 Mounting2.2.2 PDU Door Mount FIGURE 2-6 LM10 Backplate DimensionsFIGURE 2-7 PDU Door-mount Dimensions 3.1.2 LEDs LM10 Motor Protection System Chapter 3 Interface3.1 PDU Operations 3.1.1 Liquid Crystal Displaypower factor, kW, average current, and current unbalance. Pressing the History button again advances to the next history record 3.2.2 History Record and Status Screens 3.2.3 Configuration Menu3.2 PDU Screens and Menus 3.2.1 Main Startup ScreenRun 2 to Run 1 delay between forward and reverse or between speeds 3.3 EnerVista LM10 Software 3.3.1 Description3.3.2 Functional Details Table 3-1 EnerVista Hot Keys 4.1 Overcurrent Fault Conditions LM10 Motor Protection System Chapter 4 Functionality4.1.1 Descriptions CHAPTER 4 FUNCTIONALITY FIGURE 4-1 Cold Motor Trip Curves FIGURE 4-2 Hot Motor Trip Curves4.1.2 Trip Curves Example FIGURE 4-3 Trip Curve with Jam and Stall EnabledFIGURE 4-4 Cool Down Times Page 4.2 Configuration Settings 4.2.1 OverviewTable 4-1 LM10 Programmable Parameters 4.2.2 Main Menu CONFIGURATION SETTINGSCHAPTER 4 FUNCTIONALITY4-30 4.2.4 CTs and CPTs PATH Configuration Ø ENGLISH/SPANISHPATH Configuration ØØ CTs & CPTs 4.2.3 Language4.2.5 Starter Type 4.2.6 Run 1 and Run 2 SetupPATH Configuration ØØØ Starter Type PATH Configuration ØØØØ Run 1 SetupΔ = phase current - average current 4.2.7 Time Delays 4.2.8 Other SettingsPATH Configuration ØØØØØ Time Delays PATH Configuration ØØØØØØ Other SettingsAuto Restart off DevNet Fault onReset Run Hrs Maintained offPATH Configuration ØØØØØØØ Aux Relay Faults 4.2.9 Auxiliary Relay FaultsPATH Configuration ØØØØØØØØ Aux Relay Faults 4.2.10 Passcode and Login4.2.11 Run Operations 4.2.12 Factory DefaultPATH Configuration ØØØØØØØØØ Run Operations PATH Configuration ØØØØØØØØØØ Factory DefaultRange 4.3 Status Values4.3.1 Main Menu Run, FaultThis value can be reset via the Reset Run Hrs configuration setting Fault, Dev Stop, Voltage, Aux Sense Range 0.0 to 3200.0 A 4.4 History Values4.4.1 Last Trip Data Range Overcurrent, Gr. Fault, Jam, Stall CuUnbalance, LdLoss, DevNetMotor Stop AUX Sense 1 Fault4.5 Motor Start/Stop Logic Motor Status RunningRUN1 PDU Command Motor RUN CommandsMotor STOP Commands RUN1 Switch Input4-44 5.1.2 Poll Data LM10 Motor Protection System Chapter 5 Communications5.1 DeviceNet Operations 5.1.1 DescriptionTable 5-4 Poll Data Group Table 5-1 Poll Data GroupTable 5-2 Poll Data Group Table 5-3 Poll Data GroupUINT = 16 bit unsigned integer 5.1.3 Identity object5.1.4 Message Router 5.1.5 DeviceNet Object5.1.6 Assembly Object Baud Rate, value 0 to 2 125, 250, and 500 kbpsDevice outputs see format and mapping below Assembly Object, Class Code 4, Instance Data Formats for Device Inputs see belowCHAPTER 5 COMMUNICATIONS Assembly Object, Class Code 4, Instance 5.1.7 Connection Object Connection Object, Class Code 5, ServicesConnection Object, Class Code 5, Attributes Connection Object, Class Code 5, Instance 2 polled input/output connection 5.1.8 ACK Handler Object 5.1.9 Overload ObjectUSINT = 8-bit unsigned integer UINT = 16-bit unsigned integer UINT = 16-bit unsigned integer 5.1.10 Extension ObjectData Type F1 Full Load Current 16-bit unsigned integer F2 Ground FaultF7 Power Transformer 5.1.11 Data FormatsF12 Starter Type F11 Auxiliary Relay Faults 16-bit bitmaskF9 Auxiliary Sense 1 / Run1-Run2 Time Delays F10 Auxiliary Sense 2 / Run2-Run1 Time DelaysF17 Trip Class F14 Other Settings 16-bit BitmaskF15 Poll Data Group enumeration 16-bit unsigned integer F16 Run1-Run2 and Run2-Run1 Time Delay 16-bit unsigned integerF24 Status Word 16-bit bitmask F21 Motor Status 8-bit BitmaskF22 Motor Status 16-bit bitmask F23 16-bit Unsigned Integer5.1.12 Special Application F25 Input Switch Status 16-bit value use only lower byteSent by scanner CANID, MACID, 0x0E, 0x64, 0x01 5.2.1 Description 5.2 Serial Port5-64 6.1.2 Changes to the Manual LM10 Motor Protection System Chapter 6 MiscellaneousRevision History 6.1.1 Release DatesChanges to Connection Object, Class Code 5, Instance 2 polled Table 6-4 Changes to Manual Since Release A3Change to Assembly Object, Class Code 4, Instance 101, Attribute Add Assembly Object, Class Code 4, Instance 105 Poll Data Group6.2.1 GE Multilin Warranty 6.2 WarrantyWARRANTY 6-68CHAPTER 6 MISCELLANEOUS LM10 Motor Protection System Appendix A A.1 DeviceNet OverviewA.1.1 Description A.1.3 DeviceNet Operations A.1.2 Controller Area Network CANA.1.7 Maximum Cable Lengths for DeviceNet A.1.6 DeviceNet FeaturesA.1.4 Explicit Messaging and Input/Output I/O Messaging A.1.5 Pre-defined Master/Slave Connection SetDescription A.1.8 DeviceNet Specification HighlightsTable A-1 Trunk Cable Length Specification Table A-2 Drop Cable Length SpecificationDevice Profiles The Object ModelA.2.1 Overview A.2.3 Network ConfigurationA.2.4 Configuration Procedure A.2 LM10 and GE Fanuc 90-30 with DeviceNetA.2.5 Polling Input/Output Connection Z Select GE LM10 under GE MultilinZ Also, set the Scan Interval and Reconnect Time Page Phase A values are displayed in %I00105 223 ⋅ 0.1 amps A.2.7 Cyclic Input/Output Connection A.2.6 COS Change of State Input/Output ConnectionMonitoring Data A.2.8 Explicit MessagingRung 3 has a Block Move word, 3 blocks FIGURE A-1 Ladder Logic for Data Monitoring Login Configuration Level to the LM10FIGURE A-2 Ladder Logic for Login Configuration Making Setting ChangesFIGURE A-3 Ladder Logic for Setting Changes Login User Level to the LM10FIGURE A-4 Ladder Logic for Login User A.3.1 Description A.3.2 System SetupA.3.4 Setting Up the DeviceNet Network A.3 LM10 and Allen-Bradley SLC500 via DeviceNetA.3.5 Changing the Mode of Operation A.3.6 Configuring the Slave Device A.3.7 Control and Monitoring of the LM10 A.3.8 Explicit Messaging with the LM10 Relay Table A-3 Status Codes Provided by ODVA Specification A.3.9 Data Table LayoutTable A-4 Data Table Layout A.3.10 Ladder Logic Table A-5 Data to Get Trip ClassTable A-6 Data for Explicit Message Response, M1 Transferred to N20 Table A-7 Data to Get Motor Run Time Table A-8 Data for Explicit Message Response, M1 Transferred to N20Instance, and Attribute A-25 FIGURE A-9 Ladder Logic, Rungs 0000 toA-26 FIGURE A-10 Ladder Logic, Rungs 0006 toA-27 FIGURE A-11 Ladder Logic, Rungs 0009 toA-28 Index Page LM10 MOTOR PROTECTION SYSTEM - INSTRUCTION MANUAL LM10 MOTOR PROTECTION SYSTEM - INSTRUCTION MANUAL INDEX
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