Getting away from the original topic of high speed cameras, but for those interested in the fault, it's a mesh welding machine, very similar to the video at
https://www.youtube.com/watch?v=rJ7MxBopm3o
Fault is occurring on the servo drives incrementing the mesh forward. As it's intermittent in nature, when it initially occurred the operators simply reset the fault and kept running for the next few hours. Then there would be a product change, and the problem would be forgotten for a few weeks. Eventually it was reported to maintenance, set up some logs and it was established it was happening straight after the shear cut, despite the operators belief it was happening at any position in the sheet. Mechanical adjustments and replacement of wear parts were made,timing of the shear cut was tried at different settings, still an intermittent problem. Portable high speed camera limited to 30sec bursts was used to film the shear cut, everything was as expected and didn't get lucky enough to catch the fault.
Shear cut is driven by a flywheel/pneumatic clutch system. Valve has been swapped, and there is a receiver just before the valve, but the variability of the fault has me wondering if there is an occasional pressure drop somewhere upstream of the receiver that is slowing down the cut cycle just enough that the start of the next sheet is catching on the shear blade as it retracts.
Servo drives (Lenze drives/Vues motors) are well under their operating limits, have not had any success capturing useful data from the drives, but that's mainly due to my inexperience with the Lenze software. A job for next week if the camera doesn't turn up and we go back to the offending product