VIPs

Summary
The VIP is just an inverter that changes ~480VAC 60Hz to 600VDC to 3kHz or 1kHz VAC. The theory and design of the machine is simple but they are quite finicky. VIPs are not troubleshooter friendly. Some diagnostics are shown on the ACI and Z-board as diodes which is described in the section Fault Reporting. Faults can be become intertwined with each other leading to false positives so it's important to take troubleshooting very methodical and to pay close attention to anything abnormal.

VIP MONITOR
Shown on the front of the power supply door. Some of the report lights are just telling the operator that the machine has hit a limit and that other calibrations need to be done if they want to get more power or different frequency. Also multiple faults lights can show up for the single problem.