Mechatronics Certification Tests

Mechatronics Certification Test - Industrial Electricity 2

The Industrial Electricity 2 certificate builds upon the Industrial Electricity 1 certificate. Candidates should understand more complex motor starting circuits such as jogging, hand-off-automatic, reversing, and reduced voltage starting. They should be familiar with time-based, count-based and sequential control of multiple output loads utilizing control relay logic and automatic input devices such as limit, flow and pressure switches to provide feedback. They should understand basic electro-fluid power circuits where relay logic is used to operate devices such as pneumatic or hydraulic cylinders through electrically piloted directional control valves. Basic understanding of the various types of electronic sensors, timers and counters used in industrial control is required. Candidates should be familiar with the sizing and installation of various types of electrical conductors and raceways used in or around industrial machinery and should be able to properly wire an industrial control panel. Finally, candidates should understand basic troubleshooting techniques and practices, not only for the individual components but also for systems of components.

This advanced knowledge of industrial electricity and control systems is needed to understand the complex operations of machines and systems that might be used for an electro-mechanical packaging line.

Price:
$125.00
Test Topics & Questions
  • Describe a six step troubleshooting sequence.
  • Describe four methods of systems level troubleshooting and give an advantage of each.
  • Describe five types of in-circuit component tests.
  • Use the symptom and cause troubleshooting method to isolate a bad component.
  • Use the output-back troubleshooting method to isolate a bad component.
  • Use the half-split troubleshooting method to isolate a bad component.
  • Use the shotgun troubleshooting method to isolate a bad component.
  • Troubleshoot a two-wire control system.
  • Troubleshoot a three-wire control system.
  • Reverse motor control
    • State the NEMA and IEC standard for reversing the rotation of a three-phase motor.
    • Describe the function and operation of a reversing magnetic motor starter.
    • Describe the function and operation of a drum switch.
       
  • Jogging
    • Describe the operation of two types of motor jogging circuits.
       
  • HOA/Manual Auto
    • Troubleshoot a control circuit which has manual and automatic modes.
    • Describe the operation of a Hand-Off-Automatic motor control circuit.
  • Components
    • Describe the operation of a limit switch and give its schematic symbol.
    • Describe the operation of a float switch and give its schematic symbol.
    • Describe the operation of a pressure switch and give its schematic symbol.
    • Motor Thermal Overload
       
  • Applications
    • Describe the operation of a pump control circuit.
    • Describe how to test an automatic input switch.
    • Design an overhead door motor control circuit.
  • On Delay
    • Describe the operation of an On-Delay timer relay and give its schematic symbol.
    • Troubleshoot an On-Delay timer circuit.
       
  • Off Delay
    • Describe the operation of an Off-Delay timer relay and give its schematic symbol.
    • Troubleshoot an Off-Delay timer circuit.
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  • One Shot
    • Describe the operation of a one-shot timer and give an application.
    • Troubleshoot a timed one-shot motor control circuit.
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  • Repeat
    • Describe the operation of a repeat cycle timer and give an application.
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  • General
    • Describe how to test a timer relay.
    • Design a control circuit to perform an unloaded start of a motor.
  • Describe the function of a power diagram.
  • Describe the function of electro-hydraulic controls and give an application.
  • Describe the operation of two types of solenoid-operated pneumatic DCVs (1 or 2 coils)
  • Connect and operate a relay to energize a fluid power solenoid.
  • General / Components
    • Describe the operation of an electromechanical relay and give its ladder diagram symbol.
    • Describe the construction of a general purpose relay and give an application.
    • Describe the operation of a relay to perform control logic.
       
  • Application 
    • Describe the function of a seal-in circuit.
  • Simple
    • Describe the function of a limit switch and give an application.
    • Describe the operation of limit switch in an event sequencing circuit.
    • Describe the operation of a continuous-cycle reciprocation circuit.
    • Connect and operate a continuous-cycle cylinder reciprocation circuit.
       
  • Complex
    • Describe how multiple cylinders are controlled with multiple limit switches and give an application.
    • Design a logic circuit that uses a limit switch to sequence an event.
    • Describe the operation of a sequence control circuit.
    • Troubleshoot a sequence control circuit(including limit switches, relays, timers and counters)
  • Photo
    • Describe the operation of a photoelectric sensor and give an application.
    • Connect and operate a photoelectric sensor.
       
  • Inductive
    • Measure and analyze inductive sensor performance.
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  • Hall Effect
    • Describe the operation of a Hall Effect Sensor and give an application.
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  • Capacitive
    • Connect and operate a capacitive sensor.
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  • General
    • List five advantages of electronic sensors and two disadvantages.
  • Describe the operation of an upcounter and give its ladder diagram symbol.
  • Describe the operation of a downcounter and give its ladder diagram symbol.
  • Blueprint Reading
    • Describe the function of an electrical print.
    • Interpret an electrical print.
       
  • Electrical Panel
    • Describe the function of panel wire ways.
    • Wire an electrical panel.
    • Secure wire bundles in an electrical panel.
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  • Color Coding/Wire Numbering
    • Describe the function of wire color coding in electrical control.
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  • Terminals and splicing/terminal blocks
    • Describe the function of electrical terminal blocks.
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  • Wiring/bundling/signal and power
    • Wire an electrical machine.
  • Construction techniques
    Deburr conduit/reaming
    Calculate conduit length given an application.
     
  • Components
    Describe the function of conduit and list five types.
    Describe the similarities and differences between intermediate metallic and rigid conduit.
     
  • General
    Describe the function of a wiring system.
  • Determining conductor sizing /insulation and length
    Define conductor ampacity and describe the physical characteristics that affect it.
    Describe how distance affects wire selection.
     
  • Disconnects
    Describe how to size a disconnect.
     
  • Overcurrent Protection
    Describe the function of overcurrent protection and list two types.
  • Describe the operation of an upcounter and give its ladder diagram symbol.
  • Describe the operation of a downcounter and give its ladder diagram symbol.
  • Describe how to connect and operate control transformers with multi-voltage taps
    Describe the function of a tap on the secondary of a transformer and give an application
     
  • Describe how to troubleshoot a transformer
    Troubleshoot a transformer by measuring continuity
     
  • Describe the relationship between input and output current, voltage, power, and turns ratio for a control transformer.
    Describe how to calculate the output voltage of a transformer 
    Describe how control transformers are applied in industrial circuits
    Describe the operation of a control transformer and give its schematic symbol
  • Describe the operating data on transformer nameplates and the identification, marking and connection of their leads.
    Describe the operating data on a transformer's nameplate.
     
  • Describe the basic characteristics of 3–phase AC electricity including grounded and ungrounded conductors, neutral, ground and wye and delta systems.
    Describe the two most common three-phase voltage systems.
     
  • Describe the use of overcurrent protection and disconnect devices in 3–phase circuits.
    Explain why time-delay fuses are used with motor starting circuits.
     
  • Describe why power transformers are used in industrial and commercial systems.
    Isolation transformers
     
  • Grounding
    Explain the importance of the equipment ground connection.
  • 70E 
    FRC – Fire Retardant Clothing requirements / laundry requirements
    PPE Requirements – Clothing FRC, Cal/cm^2, Arc Flash Face Shield, Gloves, Shoes
    Boundaries – Limited approach, Flash Protection Boundary
  • System Safety
    Describe function of safety relay in a relay circuit
    Describe function of interlock system
    Master control MCR
    List 10 basic rules of electrical safety. 
    Describe the purpose of the lockout/tagout system used in industry. 
    Perform a lockout/tagout. 
    Describe how to verify all power is eliminated frorm the machine (specifically air)
  • Who should take this test?

    This certificate is aimed at skilled electrical technicians working relatively independently in the assembly, test, startup, troubleshooting, maintenance, repair or upgrade of electro-mechanical machines or systems. It should be a prerequisite for technicians wishing to move on to industrial machines controlled by PLC’s or to industrial machines utilizing velocity, acceleration or other motion control techniques. 

  • How long does it take to complete the test?

    Approximately 2 ¾ Hours

  • From the time of purchase, how long do I have to take the test?

    You must complete your test within 6 months of completing your purchase. After 6 months, you will no longer have access to your test. 
     

  • How many times can I attempt the test?

    You will have only one attempt at passing the test per purchase.