powerflex 700 power loss control

[remullis]

During a power interruption( quick blip) we had a fan that reversed direction and stayed running. I have the power loss parameters set to "Coast". I am think the fan draft caused the fan to start spinning in reverse and during the quick power blip the bus voltage was still generating and kept the fan moving in that direction. We stopped and restarted the drive and it went back to forward direction. Are there any other parameters that I can work with to keep this from happening?

Thanks
RM

 

[jraef]

Turn off the flying restart. Most people don’t really need it and in fans, where back drafting can happen, this is why you don’t want it.