How can I test the voltage pickup?

Check the connection from the voltage pickup to the Qualimaker board.

  1. Put an isolation between the roll and the voltage pickup.
  2. The lower voltage pickup should be isolated to the Z-bar.
  3. Measure from the lower voltage pickup (1) to the upper contact (2) (Z-bar connection). This should be 0 Ohm! (see first picture beside)
  4.  Measure from the lower voltage pickup to the Qualimaker clamp 125/126, one off them should be 0 Ohm! (see second picture beside)
  5. Measure from the upper voltage pickup to the Qualimaker clamp 125/126, one off them should be 0 Ohm!
  6. Measure the voltage on Qualimaker clamp 125 to 126 during welding
    • the voltage should be between 0.5 and 2.5 VAC

 

 

 


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