Machine is a 1992 VMC-40 and it has a Mitsubishi Invertor Freqrol-Z300-UL

Well the other day was running a few parts and got an "Inverter fault" then got a "C axis Drive line fault" looked at the error message on the Inverter and said it was an error #4. Overvoltage on the DC Bus(terminals P and N). Deceleration too fast? Increase deceleration time?

So how do I go about doing that. Is that changed in the perameters or on the inverter itself ? Could this be a problem with the inverter going bad or just some loose wires etc. Seems like all my problems have been with loose or broken wires.

Cant wait to get this thing dialed in. When it is running it is a sweet little machine.

thanks for any help

TMILLS