Posted 3 Oct 2017 Hello guys, I got a used Omron VFD from a friend. It was used in an industrial application. It works fine with the integrated panel. I would like to use it to run my drill press. I now try to control it by the so called 3 wire sequence (S1, S2, S3) for Start, Stop and forward/reverse. System does not work as expected, i. e. no reaction on the switches. I'm not sure if I have messed up the configuration of one of the n xxx parameters or if there is a HW problem. With SC open, there is no voltage at that pin (expecting 24Volts?!). Any thoughts? regards and thanks, Matthias Current config: n001 = 4 n003 = 1 n004 = 0 n006 = F/R 052 = 0 n176 = rdy n177 = 1 Share this post Link to post Share on other sites
Posted 3 Oct 2017 The parameters that you have here do not seem to match the manual at which I am looking. Here is the manual to which I am referring: http://forums.mrplc.com/index.php?/files/file/1129-3g3hv-users-manual/ Share this post Link to post Share on other sites
Posted 3 Oct 2017 You posted 2 additional questions on this same subject. I will close those questions... Share this post Link to post Share on other sites
Posted 3 Oct 2017 Hello Michael, thanks for your response and sorry if I posted the same question twice. The response time of the forum is very slow from my side ;-( The manual you are refererring to is not exactly representing my unit. Mine is described in e.g. http://star-circuit.com/article/YASKAWA/Varispeed_V7.pdf, but there seem to be quite some different manuals on the web. The Model on my VFD reads CIMR-V7AZ41P5 which is translated to the 3G3HV designation in one of the manuals. The units are produced by either Yaskawa or Omron. Nevertheless, the description for the connections (page 2-16) in the manual you are referring to are exactly the same as in my manual. The n xxx parameters seem to be different. My gut feeling is, there is a kind of password protection for some of the parameters preventing me from changing settings. Is there a factory reset on this devices not documented in the normal manuals? Regards Matthias Share this post Link to post Share on other sites
Posted 3 Oct 2017 Problem solved - SW1 needs to be turned to NPN regards Matthias Share this post Link to post Share on other sites
Posted 3 Oct 2017 17 minutes ago, Woodpecker_Germny said: The Model on my VFD reads CIMR-V7AZ41P5 which is translated to the 3G3HV designation in one of the manuals. The units are produced by either Yaskawa or Omron. Not true. CIMR-V7 are Varispeed V7 series inverter. 3G3HV is not. The manual you have from star-circuit website was correct for CIMR-V7 Series Just now, Woodpecker_Germny said: Problem solved - SW1 needs to be turned to NPN regards Matthias About to post this but I was late :D Anyways it's good to know the problem was solved. Anyways, measuring SC will always give you 0 Volt. (See page 197 from the star-circuit manual) And you can actually use PNP mode, but that'll require external power supply. Share this post Link to post Share on other sites