All good questions Tesla. The ground path is clean as per my megger. The drive is in a metal enclosure, on a metal back plate, bonded to a grounding strip that is machine screwed to the backplate. All the powder coating was removed where the ground bar was put on and anti-oxidant compound was used. Vibration is not an issue as the drive is mounted seperate from the machine it is controling. The voltage is spot on even under load, with the motor running under full load it varies about 2 volts from the unloaded readings. The lcd screen that is dark has a 4 conductor ribon that plugs directly into the control board, the ribbon ohms good and the pins and sockets look good, if you know of a way to check this under load please let me in on it!


Jimmy

Life is tough, Life is tougher when you are stupid