text: <s>[INST] Powerflex 525 Forward / Reverse Summary: Control Powerflex 525 in forward / reverse directionCan i control powerflex 525 in forward/reverse direction just start command ( Hardwired DI) and speed reference ( 4-20ma only ) that shall corresponding to -50Hz to +50Hz such that when i give speed reference 4mA and start command drive shall rotate in reverse at full speed and when i give 20mA it will rotate in forward direction or i need separate forward / reverse command Drive is not communicating to PLC over ethernet or any other protocol [/INST] The only way you can get what you want is to use the analog voltage input. It will not work with the 4-20ma current input. If you can change to analog voltage, then you would set parameter t093 to value 1 (Bi-Polar In). According to 520-UM001: https://literature.rockwellautomation.com/idc/groups/literature/documents/um/520-um001_-en-e.pdf, page 97, if you set t093 in this manner, then P043 (min freq) and t091 (anlg in 0-10V lo) get ignored. Presumably, with t093 set to bipolar, the 525 drive assumes your speed control is going to be symmetric (whatever you put in for max frequency and analog 0-10V hi) will be the same in the negative direction. \\n </s>