matth

Do not run your machine or Power on until you have changed this Wiring

You need to change the Negative DC wiring, this should not be going to Common Ground as you have it wired, do it the same as you have with the Positive Feed to the Drives, the Switching Power Supplies are Grounded with your AC 3 wire input Positive Negative Ground, this Grounds the Case of the Power Supply, so the system is protected