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Electrical Engineering machine(Labeler) questions and answers (krones PET lines)

  1. Buffer system malfunction message means what?
    A) The label is cut off
    B) The Buffer system is too tension
    C) The label is not properly fixed on the web guilder
    D) None of the above
    The point at which the label is cut off from the buffer there will be buffer system malfunction on the HMI(human machine interface)
  2. When monitoring three alarm comes on, it means
    A) Missing label at the vacuum cylinder
    B) Untransferred label at the vacuum cylinder
    C) Label not properly positioned on the bottle
    D) Option A and C
    On the labeller machine, one error that is usually displayed on the HMI when three alarm comes on is label carryover also called Untransferred label at the vacuum cylinder
  3. When monitoring two alarm comes on, it means
    A) No label on the vacuum cylinder
    B) Label on the vacuum cylinder
    C) Missing label between cutter drum and glue roller
    D) None of the above
    When monitoring two alarm comes on, it means missing label between cutter drum and glue roller
  4. When you have chips of label on the cutting station, what can cause it?
    A) The knife is too out
    B) Excessive vacuum
    C) The cutting point on the cutter drum is not correct
    D) The knife is too short
    Having chips of label on the cutting station can be caused by having excessive vacuum
  5. Servo drive signal malfunction on cutting unit means?
    A) The rotary cutter servo motor is not running due to restriction
    B) Servo amplifier is faulty
    C) The interrupt card on the servo motor is faulty
    D) Servo amplifier is not faulty
    Servo drive signal malfunction on cutting unit means Servo amplifier is faulty
  6. If the label on the cutter drum is either too early or too late to the suction rail. How do you address it?
    A) Adjust the cutter drum
    B) Adjust the rotary cutter
    C) Adjust the vacuum cylinder
    D) None of the above
    The vacuum cylinder should be adjusted. The moment the technical trained personnel notice that the label at the cutter drum is either too early or too late he/she should adjust the vacuum cylinder
  7. What are the possibility for glue splash?
    A) Too much glue at the roller
    B) Viscosity of the glue is too low
    C) Viscosity of the glue is too high
    D) Less glue at the roller
    Option A is wrong. The reason for it is that having too much glue at the roller does not matter if there will be glue splash, the only thing that matters most is the viscosity of the glue. If the viscosity is too low there will be label carryover because the glue will be too thick to be supplied by the glue roller, they can solve this by increasing the heat temperature at the bowl. If the viscosity is too high there will be glue splash because at that state the glue is lighter than it should be. The correct answer is C.
  8. What is bottle gap detection?
    A) There is gap on the infeed conveyor
    B) There is gap on the infeed worm
    C) There is missing bottle at the carousel
    D) There is no gap on the infeed conveyor
    Bottle gap detection means there is a missing bottle at the carousel.
  9. What is the function of the web guilder?
    A) To level the label going to the feed roller
    B) To remove electrostatic paralises
    C) To determine the right length of label to feed in
    D) None of the above
    The function of the web guilder is to level the label going to the feed roller
  10. How do you set the encoder back to zero position if it is out of reference point?
    A) Mechanical zero position turning the encoder at its direction of rotation until there is a rising edge
    B) Mechanical zero position turning the encoder at its direction of rotation until there is a falling edge
    C) Mechanical zero position and calibrate the encoder
    D) None of the above
  11. How is synchronization achieved between the carousel and labelling station?
    A) Incremental encoder
    B) Sensor
    C) Absolute en-dat encoder
    D) Servo motor resolver
  12. What is the purpose of the infeed worm timing belt
    A) Synchronize the infeed conveyor with the machine
    B) Synchronize the infeed worm with the machine
    C) Synchronize the infeed worm with the labelling station
    D) None of the above
    To Synchronize the infeed worm with the machine
  13. When the rotary cutter is at the reference point, what is the angular value?
    A) 180 degrees
    B) 90 degrees
    C) 110 degrees
    D) None of the above
  14. The central head is hooking on the top cam and thereby causing an unusual noise, what are the possibilities?
    A) Wear and tear of the centering bolt and pressure spring
    B) Over tension of the pressure spring
    C) cam follower too tight
    D) Cam follower not too tight
    Wear and tear of the centering bolt and pressure spring
  15. When the infeed clutch alarm is on
    A) The bearing has collapsed
    B) The belt is off
    C) The bearing has not collapsed
    D) The clutch has dis-engage
    The clutch has dis-engage
  16. On krones machine why do you need to have oil on the cutter drum?
    A) To maintain the drum temperature against expansion
    B) To lubricate the inner bearings on the cutter drum
    C) Check through the sight glass to seethe bubbles of oil
    D) Option B and C
  17. When the infeed clutch alarm is on
    A) The bearing has collapsed
    B) The clutch has dis-engage
    C) The belt has cut off
    D) All of the above
    The clutch has dis-engage
  18. Basically quality assurance (QA) test are done on the labeller. One is the label wrapping quality and the other is?
    A) Fallen bottles
    B) Full bottle quality
    C) Full bottle label
    D) Full fallen bottles
    The other quality assurance (QA) test is full bottle label
  19. Which encoder type is used to synchronize the rotary cutter with anvil bar of the cutter drum?
    A) On-dat absolute encoder
    B) Incremental encoder
    C) Servo motor resolver
    D) Sensor
  20. What is the purpose of carousel timing belt?
    A) Synchronize the carousel with the infeed worm
    B) Synchronize the carousel with the Bottle plate
    C) Synchronize the carousel with the cylinder
    D) Turning the bottle seat 360 degrees
  21. How many encoders do you have on the labelling machine?
    A) 6
    B) 2
    C) 8
    D) 4
    The labelling machine has 6 (but it varies in some type of manufacturers, some are 1 or 2)
  22. What is the distance between the vacuum cylinder and the cutter drum?
    A) 0.6mm
    B) 0.2mm
    C) 2mm
    D) 6mm
    The distance between the vacuum cylinder and the cutter drum is 0.2mm
  23. How is synchronization achieved between the carousel and the labelling station?
    A) Incremental encoder
    B) Absolute en-dat encoder
    C) Servo motor resolver
    D) All of the above
  24. The signal from the encoder goes to the splitter from the splitter it splits it into three places which are?
    A) Vacuum cylinder, carousel and Main drive
    B) Discharge conveyor, carousel and vacuum cylinder
    C) Infeed conveyor, rotary cutter and main drive
    D) None of the above
    The three places it splits into are Vacuum cylinder, carousel and Main drive
  25. In what situation should the machine be operated while the safety doors is open?
    A) During set-up
    B) During operation
    C) During shut down
    D) All of the above
    The machine safety doors should always be close expecially during running and start up. Some operators do close or open the safety doors during shut down anyway
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