The Case of the Shorted-Out Exhaust Fan
THE MYSTERY A municipal water customer was having an issue with the exhaust fan on one of their lift stations: When they flipped the switch to start the fan manually, it tripped two breakers. They called an ACES Control Systems Inspector (CSI) to the scene to...The Case of the Over-Cranked Fan
THE MYSTERY An aircraft parts manufacturer had an aluminum heat treat oven that wasn’t meeting its surveys. The customer surmised that what the oven needed was more airflow, and they called ACES to make the adjustment. THE CLUES The fan was running 500 rpm, and being...The Case of the Vandalized Manufacturing Line
THE MYSTERY One of ACES’ customers closed their factory in Utah and moved all of the equipment to Kansas in order to set up a line manufacturing synthetic twine. The system included a PLC processor and six DC variable speed drives (VSDs) and their attendant DC motors...The Case of the VFD Swap
Sometimes swapping an old VFD for a new one is harder than it looks, like when the old drive is much larger and heavier than the new one. Here, the ACES CSI (Control Systems Investigator solved both hardware and software challenges.