Kinetix 6500 Control Sync Fault

[SMControls 0]

Hello All,

We have a production line that uses an L72S processor with a host of Ethernet / IP components. There are (3) on-machine LAN's derived from (3) individual Ethernet Modules.

One of these LAN's is for drive communications. There are (36) Powerflex 70 EC drives and (10) 2904 Kinetix Servo drives on this network. [160 total connections]

Occasionally, and becoming more frequent, we're having 4 of the axis fault on: Control Sync Fault and Module Connection Timeout Fault.

Both faults are time stamped at the same time. The faults are on 4 out of the 10 axis in the motion group.

The Powerflex Drives have an RPI of 20 ms. The motion group has a course update of 6.0 ms... I have reset all diagnostic counters in RS Linx... Now we wait again...

Has anyone had similar issues? I read a KB article and found a similar forum reply on a different board that stated to upgrade the Kinetix to FW  > 2.08... Currently, we're at 2.16...

Any insight is appreciated!