Yankee rebuild

[astroid]

An old Yankee tissue machine requires revamp from DC to AC drives. Due to lack of time and space it is proposed to use individual AC feeders and a common PLC, instead of a common DC bus. Total 15 motors 6x100kW, 9x34kW. What are advantage / disadvantage

 

[itsmoked]

Only concern I'd have is wanting some isolation between the various VFDs and the PLC otherwise you could have some of those grounding/noise issues that are so common =>

You may need vector drives if these all need to work together in a synchronized manner.

Skoggsurra hopefully can wade in here.

Keith Cress
kcress -

http://www.flaminsystems.com