Wisconsin Company Uses Mitsubishi Tech To Improve Services

Appleton, Wisconsin-based Waupaca Elevator Co., which manufactures residential elevators and dumbwaiters for applications across North America, has implemented Mitsubishi Electric’s latest iQ-F compact programmable logic controllers (PLCs), Automation.com reports. The systems’ built-in data logging and diagnostic capabilities enable dealer service technicians to track the usage history of each elevator and monitor service fault codes, giving technicians deep visibility into the elevator system to more easily troubleshoot issues. This results in faster installations as well as faster and more accurate diagnoses of specific issues. It also allows for preventive maintenance, which addresses issues before they escalate, leading to quicker service calls and greater productivity overall. The manufacturer has also implemented Mitsubishi Electric variable frequency drives (VFDs) to mitigate the effects of voltage fluctuations on elevator braking resistors. VFDs allow braking resistors to turn off automatically as needed.