Basic install, 9 Powerflex 70's talking via integrated 20-comm-R over RIO at 57K to CLX. I have one drive (incidentally, the last one, investigating whether that's a cause too), that very intermittantly (twice in 4 days) has lost the DPI port 5 (the 20-comm-R). The drive is currently configured to stop on this fault (whether it can be configured otherwise, I'm unsure as the AB manual doesn't list this fault as type 1 2 or 3). Since I'm monitoring the run bit from the drive, I fault out after a few seconds. It doesn't take a reset of the drive, so it appears that this fault is clearing within my 3 second timeout on the run fault.
My questions are:
Is there a safe way to add a delay to this particular fault condition (IE loss DPI for over x seconds) before internally generating a stop command, or is there an alternate and safe means of riding out this fault when it is a brief interruption. I certainly don't want to configure it to hold last state indefinitely in the case that I do have a complete RIO failure.
Lastly, all term resistors are in place, cabling checked, lower baud running, routing away from motor leads (as best as I can as all the 70's are in a Centerline MCC), is there anything else that might cause this intermittant failure? So far, it has only occurred twice on the one drive which happens to be last in line.
My questions are:
Is there a safe way to add a delay to this particular fault condition (IE loss DPI for over x seconds) before internally generating a stop command, or is there an alternate and safe means of riding out this fault when it is a brief interruption. I certainly don't want to configure it to hold last state indefinitely in the case that I do have a complete RIO failure.
Lastly, all term resistors are in place, cabling checked, lower baud running, routing away from motor leads (as best as I can as all the 70's are in a Centerline MCC), is there anything else that might cause this intermittant failure? So far, it has only occurred twice on the one drive which happens to be last in line.