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The ATV58 drive is stuck running at low speed it will not speed up and is not following the AI1 0 to 10vdc signal.
Drive is not responding to the 0 to 10vdc analog signal.
Check the polarity 1st make sure + is on AI1 and - is on com.
Check menu 1.5 to see if any preset speeds are assigned and see if any of the preset or jog inputs are turned on.
Check to see if there is an Auto manual assigned and if so make sure its turn on to allow the correct signal to the drive.
Check to see if he high speed has been dropped to match low speed settings.
Check to see if the PID as been enabled.
Check the resistance between AI1 and com you should read about 30K ohms.. ( make sure the drive is power down and your AI1 wires are removed before measuring this)