text: <s>[INST] Help needed to set up Powerflex70 Summary: Motor not starting, no faults, need advice.Hi there Is my first time in this forum, I'm not a control guy, mostly a pure mechanic but working as a Food and Beverage Mechanic sometimes I need to fix wires related problems, this time I have been mounting an old can filler( like new after rebuilt) with the 1973 original electrical panel, first step.......easy.... new wiring including a new old stock SLC 5-04 and Powerflex70, everything is working fine, but we need the motor working in three speeds, at this point I need a control guru advice....... We need to run the VFD in three different speeds: jog, low and high. We use a drawing from RA Drives Services and Support (Wiring Diagrams), the one named Selecting Multiple Speed Command Sources (Attached) without success. We have three relays wired to I/O s [/INST] Let's start with the easy stuff. Make sure you've got a good copy of the PF 70 user's manual: http://literature.rockwellautomation.com/idc/groups/literature/documents/um/20a-um001_-en-p.pdf Go to page 68, where it defines how the digital inputs will be used. You are using them correctly (364-366 set to 15, 16, 17). However, note that turning on only input 4 will give preset speed 1, turning on only input 2 will give preset speed 2, but turning on only input 3 will give preset speed 4. Rockwell uses the inputs in binary code to get up to eight (8) preset speeds. You may already know this information, but I want to be sure you understood. Go to page 33, where parameter 90 is defined. You say you've set parameter 90 to value 15, and 93 to value 16. Value 15 means preset speed 5, and value 16 means preset speed 6. Because you want to use the digital inputs and have already defined them properly, you shouldn't have to define parameter 90 at all. However, to get preset speed 1, you will need to set parameter 93 to value 11 (preset speed 1). Go to page 110. There, it says that the default source for speed reference is parameter 90, unless those speed select inputs are closed. To summarize, Parameter 90 doesn't matter. Parmeter 93 should be value 11 (for preset speed 1 when input 4 is closed) You have parameters 364-366 correct Remember that you have to set parameters 101, 102, 103 (the three preset speeds you've decided to use. Page 35 shows the defaults for those three speeds are 5, 10, and 20 hz respectively. Your problem, I believe, is because you've provided no means for starting and stopping the drive. You stated parameters 361, 362, and 363 are set to 0. This is not used according to page 68. Digital input 1 is set by default as a stop input, and digital input 2 is set to start by default (see page 68). Please refer to the installation manual for wiring choices for these two inputs: http://literature.rockwellautomation.com/idc/groups/literature/documents/in/20a-in009_-en-p.pdf Page 37 gives examples. You'd stated you were using old fashioned way to control the drive, so your PLC must provide signals to the drive via input 1 and input 2. \\n </s>