In our machine train we have online BN 3500 and system 1. If we go to orbit plot of few bearings then I have noticed that 1X filtered orbit shows reverse precision and in few it shows forward precision. But as far as I know 1X filtered orbit should always be forward precision only
I have checked the direction of rotation in system 1 and it is consistent with actual direction of rotation
I have attached the screen shots of orbit plots. What could be the reason ?
Physical cross connection of probes between X and Y is unlikely to me. Because can not be in 5-6 out of 15-16 bearings