Hi.
I think there should be two braking modes: with the saved position (FeedHold) and when the current exact position is not important (CycleStop).
This is the same conclusion I come to. If you wish to retain exact position the <FeedHold> then <CycleStop>. If you wish to stop with the maximum
possible deceleration obtainable with your servo then <CycleStop>
At the current time when you <CycleStop> the deceleration is so abrupt that the servo faults which is less than desirable. You do know however that it can
mange the acceleration in your motor tuning page because otherwise it would fault under acceleration as well.
I'm going to guess that you can program a maximum current in your drive which will in turn limit the acceleration. If however you turn the
current limit down eventually the servo will not be able to even accelerate as quickly as your Mach tuning. If you have the current limit just above that threshold
then your servo will accelerate at the max Mach tuning rate and should decelerate at the same.
There are three fault conditions that could be happening when you execute <CycleStop>:
1) Overcurrent....the drive is trying to decelerate so quickly that the drives current limit is exceeded
2) Overvoltage.....the servo after run is generating voltage which has to be absorbed by the drive and regen resistor if fitted. If the voltage gets too high the drive
will fault rather than have the DC link capacitors blow up
3) Following error....under normal operating conditions we want the following error window to be small and so be assured that the servo is following its commanded
position as closely as possible. Under <CycleStop> conditions the commanded position stops whereas the encoder runs on as the servo decelerates with an ever
widening error and eventually the following error will be exceeded. One possibility it to set the following error window much wider so that it doesn't fault under
<CycleStop> condition or program Mach to ignore a following error under <CycleStop> condition.
Can you post some details about your servos and drives? A manual would be great.
Craig