Micro Controller Based Governor Handbook Quiz
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Questions and Answers

What does the message 'LOW LUBE OIL PRESSURE' indicate?

  • Low Lube Oil Pressure has been detected. (correct)
  • The engine is running too fast.
  • The engine has overheated.
  • The fuel rack is obstructed.

    • Under which condition does the system enforce a shutdown and display 'OVER SPEED SHUTTING DOWN'?

  • When the engine is running normally.
  • When engine over speed occurs. (correct)
  • When the oil pressure is normal.
  • When the engine fails to start.

    • What does the failure of the 'ELECTRONIC SPEED TRIP TEST' indicate?

  • OST test failure has occurred. (correct)
  • The fuel rack is functioning properly.
  • The lube oil pressure is adequate.
  • The engine has shut down correctly.

    • Which situation triggers the message 'OST TRIPPED or TACHO FAILED'?

    <p>The engine bogs down or the Tacho fails.</p> Signup and view all the answers

    What action is required if the message 'SWITCH OFF MB1 & MB2 WAIT FOR 5 MINUTES' is displayed?

    <p>Check for fuel rack obstruction or wiring issues.</p> Signup and view all the answers

    What feature allows for the immediate return of the fuel rack to its zero position?

    <p>Electromagnetic clutch</p> Signup and view all the answers

    Which of the following parameters is NOT monitored and displayed on the screen?

    <p>Engine Temperature</p> Signup and view all the answers

    What feature ensures security against unauthorized access to governor parameters?

    <p>Password protection</p> Signup and view all the answers

    How does the system handle a failure of the fuel rack position sensor?

    <p>The loco can continue to operate without issues</p> Signup and view all the answers

    What allows on-line tuning of parameters for performance optimization?

    <p>Laptop connectivity</p> Signup and view all the answers

    What happens when the Booster Air Pressure (BAP) sensor fails?

    <p>The governor disables BAP-based rack limitation</p> Signup and view all the answers

    What feature does the system provide for severe faults?

    <p>Hooter sound and acknowledge button</p> Signup and view all the answers

    What is the layout of the display used for monitoring parameters?

    <p>20 character x 4 line VFD</p> Signup and view all the answers

    How can the error log be utilized by the driver?

    <p>Downloaded to a laptop/PC</p> Signup and view all the answers

    What is the primary advantage of having functional plug-in modules in the governor system?

    <p>They allow for easy breakdown maintenance without unloading.</p> Signup and view all the answers

    What is the expected maintenance interval for the microcontroller-based governor compared to conventional governors?

    <p>1 day versus 3 to 4 days.</p> Signup and view all the answers

    How long can the governor operate without requiring any scheduled maintenance?

    <p>48 months.</p> Signup and view all the answers

    Which feature allows for improved fuel efficiency in the microcontroller-based governor system?

    <p>Precise control of fuel rack through a stepper motor.</p> Signup and view all the answers

    What is a notable feature of error logging in the microcontroller-based governor?

    <p>Errors with real time and date are recorded in non-volatile memory.</p> Signup and view all the answers

    What is the purpose of the dry run test facility in the governor system?

    <p>To test free travel of the fuel rack.</p> Signup and view all the answers

    What is the advantage of digital tuning of the governor through a laptop?

    <p>It avoids the trial and error method of spring adjustments.</p> Signup and view all the answers

    What message is displayed when the Mechanical OST test is successful?

    <p>TRIP LIMIT XXXX TRIPPED AT XXXX</p> Signup and view all the answers

    What happens when the engine exceeds the allowed speed during normal operation?

    <p>The engine shuts down and a message is displayed</p> Signup and view all the answers

    Which scenario triggers the display of the 'Mechanical OST Level To be increased' message?

    <p>When the OST trip occurs below the set level and less than +5 RPM</p> Signup and view all the answers

    What does the 'Rack Position Sensor Calibration Failed' message indicate?

    <p>Calibration was attempted but encountered errors</p> Signup and view all the answers

    How is it indicated that Rack Position Sensor Calibration has completed successfully?

    <p>Rack Position Sensor Calibration Success message appears</p> Signup and view all the answers

    Which message remains displayed until acknowledged?

    <p>Mechanical O.S.T Level To be increased</p> Signup and view all the answers

    What does the term 'TRIP LIMIT XXXX TRIPPED AT XXXX' refer to?

    <p>The exact parameters at which a system trip occurred</p> Signup and view all the answers

    What is indicated by the message 'Electronic O.S.T. Test Successful'?

    <p>The electronic component functioned correctly</p> Signup and view all the answers

    What action is suggested if the engine shuts down due to overspeed?

    <p>Press the acknowledge switch</p> Signup and view all the answers

    What is the significance of the message 'Rack Position Max.Error XX.XX mm'?

    <p>It signifies acceptable error range is exceeded</p> Signup and view all the answers

    What message is displayed if the engine is not cranked within 20 seconds after the fuel rack is opened?

    <p>CRANKING not done</p> Signup and view all the answers

    What happens during cranking if the engine RPM does not reach the minimum set RPM?

    <p>The system displays FAILED to CRANK</p> Signup and view all the answers

    What does the message 'ENGINE SHUT DOWN due to Low Lube Oil Pressure' signify?

    <p>The engine has experienced a pressure failure</p> Signup and view all the answers

    What should a user do after encountering the 'ENGINE SHUT DOWN' message?

    <p>Press RESET/START key to RESTART the engine</p> Signup and view all the answers

    Which message indicates an external shut down during cranking?

    <p>CRANKING Stopped due to external SHUT DOWN</p> Signup and view all the answers

    What is indicated by the message 'OVER SPEED TRIP'?

    <p>An over-speed condition occurred during OST test</p> Signup and view all the answers

    What message is displayed if an external shutdown occurs while the engine is cranking?

    <p>CRANKING Stopped due to external SHUT DOWN</p> Signup and view all the answers

    What does the 'READY' message indicate during system setup?

    <p>The engine is ready for cranking</p> Signup and view all the answers

    Which situation triggers the message stating 'ENGINE SHUT DOWN due to OVER SPEED'?

    <p>Engine reaches excessive RPM beyond limits</p> Signup and view all the answers

    What will occur after pressing the RACK for RESET/START Key?

    <p>The system opens the fuel rack for cranking</p> Signup and view all the answers

    What is the purpose of the load and clutch control card in the system?

    <p>To provide signal processing for electromagnetic clutches</p> Signup and view all the answers

    Which component receives power from the load and clutch control card after the MCBG is powered up?

    <p>Electromagnetic clutch</p> Signup and view all the answers

    In the actuator unit, the signal from which device is critical for the operation of the stepper motor?

    <p>Clutch signal</p> Signup and view all the answers

    What role does the tacho in the control unit primarily serve?

    <p>To monitor engine RPM</p> Signup and view all the answers

    Which mechanism transmits torque to the rack and pinion in the actuator unit?

    <p>Electromagnetic clutch</p> Signup and view all the answers

    What is the function of the supporting mounting plate provided during the installation of the control unit?

    <p>It secures the unit to the locomotive's wall.</p> Signup and view all the answers

    Which of the following best describes the construction of the equipment used in the system?

    <p>It features modular construction with functionally separated plug-in modules.</p> Signup and view all the answers

    What type of sheathing is used for the cables in the system to enhance safety?

    <p>PTFE inner sheathing and FRLS outer sheathing.</p> Signup and view all the answers

    What ensures that wrong connections of cables are not possible during system installation?

    <p>MS connectors that match only with their corresponding mating connectors.</p> Signup and view all the answers

    What is indicated by the presence of shielded cores in the system’s cables?

    <p>Protection against electromagnetic interference.</p> Signup and view all the answers

    Which installation requirement must be met for the actuator unit in a WDM series locomotive?

    <p>It should replace the existing Wood Ward Governor's mounting base.</p> Signup and view all the answers

    Why are ferrules included at both ends of the cables used in the system?

    <p>For easy identification and matching to existing locomotive wiring.</p> Signup and view all the answers

    What is the maximum allowable voltage dip during cranking for the microcontroller-based governor?

    <p>22 V DC</p> Signup and view all the answers

    Which of the following conditions does NOT trigger an automatic engine shutdown?

    <p>Motor under current</p> Signup and view all the answers

    What is the time required for the governor to adjust engine RPM from IDLE to FULL speed?

    <p>15 to 20 seconds</p> Signup and view all the answers

    In case of EEPROM failure, what operation does the system default to?

    <p>Runs with default parameters</p> Signup and view all the answers

    Which feature allows the testing of both electronic and mechanical OSTA?

    <p>Test key with a key lock switch</p> Signup and view all the answers

    What occurs automatically when the booster air pressure sensor fails?

    <p>Disabling of air pressure based fuel limiting</p> Signup and view all the answers

    What action is taken by the governor system during a tacho signal failure?

    <p>Engine operates at notch 1</p> Signup and view all the answers

    What is the function of the electronic OSTA in the governor system?

    <p>Shuts down the engine if overspeeding occurs</p> Signup and view all the answers

    What happens to the alarm buzzer when a normal fault occurs?

    <p>It turns off automatically after a short duration.</p> Signup and view all the answers

    Which condition causes the message 'Boost air pressure fuel BYPASSED' to be displayed?

    <p>The BAP fuel limiting toggle is turned off.</p> Signup and view all the answers

    What does the 'Load Control FAILED' message indicate?

    <p>The load control circuit has encountered a failure.</p> Signup and view all the answers

    Which message signifies that the EEPROM is functioning with default parameters?

    <p>RUNNING DEFAULT PARAMETERS</p> Signup and view all the answers

    What is required to clear messages related to major faults?

    <p>Manual press of the acknowledge key.</p> Signup and view all the answers

    Which fault message indicates a problem with the fuel rack sensor?

    <p>FUEL RACK SENSOR FAILED</p> Signup and view all the answers

    What does the 'Communication FAILED' message imply?

    <p>The communication between the governor and display module has failed.</p> Signup and view all the answers

    Which situation results in no acknowledgment required for message clearance?

    <p>When a minor fault occurs.</p> Signup and view all the answers

    When is the message 'Boost air pressure fuel ACTIVE' displayed?

    <p>When BAP fuel limiting is activated via the control unit.</p> Signup and view all the answers

    What is indicated by the message 'EEPROM FAILED'?

    <p>The non-volatile memory has failed, reverting to default settings.</p> Signup and view all the answers

    What is the primary function of the 'Send' command in the Input region?

    <p>To transmit changes only if a parameter has been modified.</p> Signup and view all the answers

    When a user selects 'No' after changing parameters and attempting to exit the Input region, what happens to the values?

    <p>The previous saved values are retained.</p> Signup and view all the answers

    What happens if the user responds 'No' to the dialog box after the 'Send' command indicates successful configuration?

    <p>The software will attempt to retransmit the data automatically.</p> Signup and view all the answers

    What is the purpose of the 'Read Config' command?

    <p>To retrieve and update the PC screen with current MCBG values.</p> Signup and view all the answers

    Which command allows the user to exit the Input region and return to the main menu?

    <p>Main Menu</p> Signup and view all the answers

    What occurs if the user selects the 'Cancel' option while trying to send data to the MCBG?

    <p>The data transmission process is halted immediately.</p> Signup and view all the answers

    Which statement correctly describes the 'Save' command's functionality?

    <p>It saves changes to parameters made during the current session.</p> Signup and view all the answers

    How does the software handle the situation if no parameter changes are made when the 'Send' command is executed?

    <p>It returns an error message.</p> Signup and view all the answers

    After executing the 'Read Config' command, what options does the user have for the retrieved values?

    <p>They can be permanently saved or discarded.</p> Signup and view all the answers

    What prompt appears when the user tries to exit the Input region after making changes?

    <p>Do you want to save these changes?</p> Signup and view all the answers

    What is the allowed maximum delay for LOPS at notch 2?

    <p>20</p> Signup and view all the answers

    What is the default decimal setting for idle/notch 1?

    <p>0</p> Signup and view all the answers

    Which is the minimum value for the LOPS delay at notch 2 to 8?

    <p>5</p> Signup and view all the answers

    What is the maximum allowable range for boost air fuel limit pressure?

    <p>0 to 10 Kg/Cm2</p> Signup and view all the answers

    At notch settings from 2 to 8, what is the default delay value for notching up?

    <p>10</p> Signup and view all the answers

    What is a primary advantage of the microcontroller-based governor in terms of maintenance?

    <p>No need for individual tuning for each engine</p> Signup and view all the answers

    Which feature contributes to improved fuel efficiency in the microcontroller-based governor?

    <p>User-settable engine parameters for optimization</p> Signup and view all the answers

    What role does the stepper motor serve in the microcontroller-based governor system?

    <p>High precision position control of the fuel rack</p> Signup and view all the answers

    How does the microcontroller-based governor handle error logging?

    <p>Maintains an error log with date and time stamps</p> Signup and view all the answers

    Which component of the microcontroller-based governor is responsible for continuous display of engine status parameters?

    <p>Control unit</p> Signup and view all the answers

    What feature does the user-friendly menu driven software provide?

    <p>Modifying parameters and downloading error logs</p> Signup and view all the answers

    What is the function of the electromagnetic clutch in the microcontroller-based governor system?

    <p>It provides automatic engine shutdown during power failure</p> Signup and view all the answers

    What message is shown when the Rack Position Sensor Auto Calibration is in progress?

    <p>Rack Position Auto ON</p> Signup and view all the answers

    When is the message 'Lube Oil Pressure Sensor Faulty' displayed?

    <p>When the sensor is declared faulty</p> Signup and view all the answers

    What should be checked when the message 'Check BATTERY condition.Check for Tacho fault' appears?

    <p>Battery voltages and Tacho/ESS signal wiring</p> Signup and view all the answers

    What does the message 'Tacho Faulty' indicate?

    <p>The Tacho signal is not being received properly</p> Signup and view all the answers

    What action should be taken when the 'Stop Cranking' message is displayed?

    <p>Stop pressing the start button immediately</p> Signup and view all the answers

    What condition leads to displaying the message 'BATTERY weak or cranked'?

    <p>The Loco fails to achieve the set RPM</p> Signup and view all the answers

    What might cause the failure of the Lube Oil Pressure Sensor?

    <p>Faulty wiring or sensor malfunction</p> Signup and view all the answers

    What is indicated when the 'Reset OST' message is displayed?

    <p>The system requires a manual reset</p> Signup and view all the answers

    What should be checked if the message 'Waiting for Recovery' is shown?

    <p>Functional state of the Lube Oil Pressure Sensor</p> Signup and view all the answers

    What could be a likely cause for the message 'Check for Tacho fault' in general terms?

    <p>The Tacho/ESS signal wiring may have issues</p> Signup and view all the answers

    What occurs if the engine overspeed happens during normal operation?

    <p>The engine will shut down and a message will be displayed.</p> Signup and view all the answers

    Which message indicates the completion of Rack Position Sensor Auto Calibration?

    <p>Rack Position Sensor Calibration Success</p> Signup and view all the answers

    When does the message 'Mechanical O.S.T Level To be increased Trip Limit XXXX TRIPPED AT XXXX' appear?

    <p>During mechanical OST testing if the trip occurs below the set level.</p> Signup and view all the answers

    Which of the following messages indicates that there is an error with the Rack Position Sensor?

    <p>Rack Position Calibration Failed</p> Signup and view all the answers

    What must be done for system messages such as 'Electronic O.S.T. Test Successful' to clear from the display?

    <p>Press the acknowledge switch on the display unit.</p> Signup and view all the answers

    Which statement best describes the message 'TRIP LIMIT XXXX TRIPPED AT XXXX'?

    <p>It shows the limits set for engine speed or pressure thresholds.</p> Signup and view all the answers

    What does the message 'Rack Position Calibration Failed' imply?

    <p>Calibration was initiated but resulted in an error.</p> Signup and view all the answers

    Which component is involved in the shutdown of the engine if overspeed occurs?

    <p>Mechanical OSTA switch</p> Signup and view all the answers

    What message is shown when the Rack Position Sensor Auto Calibration fails?

    <p>Rack Position Sensor Calibration Failed</p> Signup and view all the answers

    What parameters are continuously displayed when the engine is running?

    <p>Lube oil pressure and fuel rack position</p> Signup and view all the answers

    What does the 'Power ON SUCCESSFUL' message indicate?

    <p>System is powered on and functioning correctly</p> Signup and view all the answers

    Which message is displayed when the rack is at zero position?

    <p>Press RESET/RESTART key to START Engine</p> Signup and view all the answers

    What happens when the laptop PC communication cable is connected?

    <p>User Settable Parameters Programming ON</p> Signup and view all the answers

    What information does the LCP display format provide?

    <p>Load control output in Hours minutes format</p> Signup and view all the answers

    Which role does the actuator unit play in the system?

    <p>It controls the stepper motor operation using signals</p> Signup and view all the answers

    What type of display is used to show system messages?

    <p>20X4 VFD display unit</p> Signup and view all the answers

    What does the 'BUSY' message indicate during operation?

    <p>Laptop PC is connected and communicating</p> Signup and view all the answers

    What indicates a fault condition in the microcontroller-based governor system?

    <p>Display of appropriate fault messages</p> Signup and view all the answers

    Study Notes

    Micro Controller Based Governor Handbook

    • This handbook is on Micro Controller Based Governors fitted on Diesel Locomotives
    • It was prepared by CAMTECH in June 2012
    • The handbook gives a description of functions, displays, and setting parameters for MCBGs
    • Micro Controller based Governors have many advantages over conventional engine governors, including improved fuel efficiency and reduced pollution.
    • This is a new technology, and field staff may not have adequate awareness of its function and maintenance
    • Proper knowledge is necessary for better reliability
    • The handbook provides necessary knowledge to concerned staff to achieve trouble-free service of MCBGs
    • The handbook contains correction slips for future use, numbered as CAMTECH/M/2012/MCBG/1.0/C.S. #XX (XX being the slip number).
    • The handbook includes diagrams, illustrations, and descriptions of control units, actuator units, and various types of governors used in diesel-electric locomotives
    • Maintenance procedures and troubleshooting techniques are included.
    • The system has built-in fault diagnostic capabilities, displays fault information for drivers, and records faults with date and time.
    • The system is user programmable to be used on various types of locomotives
    • The handbook provides detailed procedures for cranking the engine.
    • The handbook acknowledges contributions from key personnel, like Shri S.B.Sharma, Sr. CTA/M/CAMTECH.

    Contents

    • Introduction
    • System installation
    • Advantages of MCB Governor
    • Salient features
    • Advanced features
    • Display Parameters
    • Faults Diagnosis
    • Test Facilities
    • Fail-Safe Features
    • System Specifications
    • System Description
    • Control Unit (details on functions, connectors, and voltage outputs)
    • Actuator Unit (details on functions, connectors, clutch drive, motor, and fuel rack positioning)
    • System Installations
    • Salient Features
    • Display Parameters (e.g., LOP, FOP, BAP, Notch, RPM, LCP)
    • Fault Diagnosis
    • Test Facilities
    • Fail-Safe Features (e.g., shutdown in case of lube oil pressure sensor failure, tacho signal failure, motor overcurrent, or software/EEPROM/Bus driver failure.)
    • System Specifications (e.g., operating voltage, speed settings, governor response time, load control)
    • System Description (modules like Control Card, Input Card, Load and Clutch Control Card, etc.
    • Control Unit (details on functions, connectors, and voltage outputs)
    • Actuator Unit (details on functions, connectors, clutch drive, motor, and fuel rack positioning)
    • Functional Details
    • Display Messages (descriptions of various messages displayed on the screen, including power-on check, readiness for cranking, fuel rack errors, etc.)
    • System Messages (similar to Display messages)
    • Faults Messages (descriptions of fault messages and their interpretation)
    • Status Messages (descriptions of various status messages)
    • User Settable Parameters (list of user-adjustable parameters for the MCBG in detail for various operating configurations)
    • List of Error Codes with messages (detailed list of possible error codes and their corresponding messages)
    • Setting of Settable Parameters
    • Brief Description of Configuration software
    • Menu Screens
    • Principle of Operation (control unit, actuator unit, and the relationship between them)
    • Block Diagrams (including diagrams for control unit, input card, actuator, etc.)
    • Maintenance
    • Fault Finding (procedure for finding the source of faults, troubleshooting)
    • Procedure for Calibration (procedures needed to adjust various components of the MCBG.)
    • Drivers instruction
    • Annexure (including detailed instructions and modification sheets related to MCBG.)

    Additional Information

    • The handbook includes extensive diagrams, illustrations, wiring diagrams and/or schematic diagrams of the control unit and actuator unit.
    • The handbook details various types of governors used in diesel-electric locomotives and describes their working principles.
    • It covers maintenance procedures, troubleshooting, testing facilities, and operational procedures for MCB Governors. Detailed steps for calibration procedures are also included.

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    Handbook on Micro Controller Based Governor fitted on Diesel Locomotives PDF

    Description

    This quiz tests your knowledge on the Micro Controller Based Governors used in Diesel Locomotives, as outlined in the CAMTECH handbook. It covers various aspects such as system installation, advantages, and fault diagnosis. Understanding these concepts is crucial for field staff to ensure reliable performance in locomotive operations.

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