I haven't worked with your drive specifically, but most drives have a setting that must be set to define where it reads the source of the speed input from. Be it an analog input from the screw terminals, a digital preset input, serial command, or something else. Be sure to check that that setting is correct for your application.
You didn't say what hardware you are using to connect to the drive. Are you using a serial modbus adapter? If so what driver for hal? Are you using something else to send an analog signal for the speed? (such as a Mesa board.) Todd Zuercher P. Graham Dunn Inc. 630 Henry Street Dalton, Ohio 44618 Phone: (330)828-2105ext. 2031 -----Original Message----- From: lloyd wilson <llwilso...@rochester.rr.com> Sent: Friday, March 01, 2024 8:35 AM To: Emc mail list <emc-users@lists.sourceforge.net> Subject: [Emc-users] Mitsubishi VFD control [You don't often get email from llwilso...@rochester.rr.com. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ] [EXTERNAL EMAIL] Be sure links are safe. I'm using a Mitsubishi E500 VFD for spindle drive on the VMC I'm retrofitting & can't get variable speed to cooperate. The mitsub_vfd program operates properly (I think)- run/stop behaves as expected, speed commands are generated and accepted by the VFD, but the motor speed stays the same. I hacked in a couple of debugging statements to show the dialogs (running in halcmd): setp sp.motor-cmd 50 halcmd: 01ED11388EF SENT: 0x5 0x30 0x31 0x45 0x44 0x31 0x31 0x33 0x38 0x38 0x45 0x46 7!DEBUG: ,0,1, 0x6 0x30 0x31 show pins ........ 4 float IN 50 sp.motor-cmd ....... then setp sp.motor-cmd 80 halcmd: 01ED11F40F6 SENT: 0x5 0x30 0x31 0x45 0x44 0x31 0x31 0x46 0x34 0x30 0x46 0x36 7!DEBUG: ,0,1, 0x6 0x30 0x31 show pins ........ 4 float IN 80 sp.motor-cmd ....... the messages are properly formatted per the Mitsub manual & replies show no errors --but the test motor keeps running at the same speed. Anyone have a clue where to look for the solution? as always, thanks -ldw _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
