text: <s>[INST] PowerFlex 523 and external input supply I'm controlling a PF523 with 2-wire control using external power from a PLC output card. Can I still connect terminal 11 to terminal 1 on the drive? (leave the jumper in). Since terminal 11 and the external power supply have the same common, would it still work? [/INST] Yes. As long as the drive's terminal 4 common is connected to the external supply's common, you are good to go. Connection examples can be found in the 520 user's manual: http://literature.rockwellautomation.com/idc/groups/literature/documents/um/520-um001_-en-e.pdf \\n </s>