text: <s>[INST] VFD DRIVE GV3000 /SE 230 - Analog Input Speed Control Issue I'm having problem with the speed control signal to the VFD drive Modle GV3000 / SE 230. It is an old model probably 12 to 13 years old. Orginally, a 0 to 20mA signal was used to control the speed of the motor through this VFD. But today the drive was not following the remote speed control signal, it just ran at minimum speed. Checked the parameters and jumper J4 and look correct. When a maximum signal is given i.e. 20mA the drive goes to the minimum speed (set by parmater P0003) and when a minimum signal is given the drive increase the frequency up to 15Hz (max speed is set at 60Hz). Re-wired the drive so a speed control signal from 0 to 10VDC volts was used as I thought the 4-20mA analog input signal receiver of the drive went bad. Jumper J4 was moved to pin 2-3 and the paramter P-0011 was changed to 2 (0 - 10 VDC). Still the same problem. When I increased the maxium speed paramter to a higher value, the drive will increase the speed accordingly when a minimum speed control signal is given. For example Speed Signal VFD Drive Speed Output In Hertz Max Speed In Hz set by P004 0 VDC 15 600 VDC 30 90 I would appreciate your feedback if you have ever encountered such a problem and were able to fix it. Regards, Charlie CamilleriMaintenance Technician [/INST] Look at OIM, see LED AUTO, this control by AUTO/MAN. If AUTO the speed reference source is come from terminal strip. Please download manaul from RA website D23359-460V NEMA Software.pdf \\n </s>