VFD retrofit for an overhead crane system

overhead bridge

Infinity Power Corp completed a VFD retrofit for an overhead crane system in a Wyoming machine shop where traditional OEM service and repair of aging components was cost prohibitive. The system was modernized using a new variable frequency drive and an IPC-designed control circuit, delivering improved speed control, precise load handling, and enhanced operational safety. As a local electrical and controls integrator, Infinity Power provided a turnkey retrofit solution that reduced long-term maintenance costs while supporting ongoing operation and future system upgrades.  

Overhead crane control panel during the preparation phase of a VFD retrofit project. Existing components were evaluated, legacy controls identified, and panel space prepared for installation of a new variable frequency drive and IPC-designed control circuit. This step ensured a clean integration of modern motor control hardware while minimizing disruption to ongoing machine shop operations.
 Overhead bridge crane operating in a Wyoming machine shop after control system evaluation and modernization. The project included retrofitting the crane control box with a new variable frequency drive and IPC-designed control circuit, improving load control, operational smoothness, and long-term serviceability while extending the usable life of the existing crane structure.
Close-up of one of two tram bridge motors controlled by a new variable frequency drive as part of an overhead crane control retrofit. The VFD upgrade provides smoother acceleration and deceleration, improved positioning accuracy, and reduced mechanical stress compared to legacy contactor-based control. This modernization extends equipment life while improving operator control and system reliability.
Variable frequency drive installed as part of an overhead crane control retrofit, including the addition of two line reactors—one on the incoming power and one on the motor leads. The reactors reduce electrical noise, limit voltage spikes, and protect both the VFD and crane motors, improving long-term reliability and extending equipment life in an industrial machine shop environment.
Close-up of input and motor-side line reactors installed as part of an overhead crane VFD retrofit. The reactors reduce harmonic distortion, limit voltage transients, and protect both the variable frequency drive and connected motors. This design approach improves system reliability, minimizes electrical noise, and extends the service life of crane components in a demanding industrial environment.