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Hi,
I've been encountering some strange runaways with one of our machines. There is many like it but this one is the only one with this kind off problem. Every now and then (can be 1-2 months in between) it seems to be starting a servo motor 'by itself'. This causes dangerous conditions as this is a pretty big machine, though last time it looks like it hit the torque limit and shut off.
There doesn't seem to be any logic in or the PLC/motion controller that can be causing this (it has been changed and it's only happening to one of the eight machines)..
Can this be caused by electrical noise, maybe on the position feedback?
The servo packs and motors are omron yaskawa.
Any pointers and ideas are appreciated.
I've been encountering some strange runaways with one of our machines. There is many like it but this one is the only one with this kind off problem. Every now and then (can be 1-2 months in between) it seems to be starting a servo motor 'by itself'. This causes dangerous conditions as this is a pretty big machine, though last time it looks like it hit the torque limit and shut off.
There doesn't seem to be any logic in or the PLC/motion controller that can be causing this (it has been changed and it's only happening to one of the eight machines)..
Can this be caused by electrical noise, maybe on the position feedback?
The servo packs and motors are omron yaskawa.
Any pointers and ideas are appreciated.