text: <s>[INST] Powerflex 753 & Powerflex 755 interchangability Summary: Replacing a Powerflex 755 with a Powerflex 753I'm looking at setting up spares for Powerflex Drives. I plan on having 1 spare size within the frame size where it makes sense but there are also several 753 & 755 in use - mainly on overhead cranes. There does not seem to be a lot of difference between the 2 drives aside from embedded Ethernet and I am looking to investigate the possibility setting up the 753 for most - if not all - of the applications. I need to understand better why the 755 was used and what makes the 755 required. What would be the things to look for ... or the right questions to ask ... to know if a 753 could replace a 755 without problems? [/INST] PF755 has built-in torque-proving capability specifically for cranes. You might not need this for the bridge or trolley portion of your cranes, but it is definitely worth further research for the hoist. The PF755 is also capable of being used by a logix processor to do CIP motion. The PF755 has more option slots available than the PF753. If you do not need torque proving or integrated CIP motion, the PF753 is the less expensive choice. http://literature.rockwellautomation.com/idc/groups/literature/documents/br/750-br001_-en-p.pdf This sales brochure is a good one to compare the two drives. http://literature.rockwellautomation.com/idc/groups/literature/documents/sg/pflex-sg002_-en-p.pdf This brochure covers almost all of Rockwell's drive offering \\n </s>