NOTE: Make sure that the wire is not touching anywhere. Only a perfectly set and maintained canbody welder, can assure perfect welding! A weld monitor is a pure “measuring instrument”.
Check this specific wire crossing (red arrow). The wire might touch each other here!
Check the connection from the voltage pickup to the Qualimaker board.
The setting of t1 and t2 is wrong. If the timing is wrong the PM cannot execute the signal, which is necessary to memorize the canbodies in the reject unit and to start the record of the graph.
Setting of t1 and t2:
The value of t2 and t1 need to be smaller as the cycle of one single can.
A production of 300/min. corresponds to a cycle time of 200 ms/can. Production of 600/min. corresponds to 100ms/can.
For a more detailed explanation of timing t1 and t2, consult your manual book 2, chapter 5.6.5. “Setting of Parameter t1 & t2 for recuded Current and Overlap Check“.
Check the inductive proximity switch B64 at the final pusher unit for function, operating distance and defect.
Final pusher (Synchrostar II): Sensor B64.
Inductive proximity sensor for embeddable mounting.
Output: NO. or NC.
Operating distance: 2mm