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Millions of parts are available for same-day shipping and next-day delivery.
45+ years of experience to help you find an ideal replacement or repair solution.
We stand behind our quality by offering a complimentary 2-Year DO Supply Warranty on all products.
DO Supply is a global leader in replacement parts for industrial automation equipment. Our mission is to elevate the standard of expert support, speed, and reliability for your need-it-now automation replacement and repair needs. Whether it's PLCs, drives, motors, HMIs, or more, you can count on us for the best service and fastest solutions.
Shop with confidence knowing that we offer fast shipping and best-in-class customer service. Explore our large inventory of in-stock automation parts backed by the guarantee of a 2-year DO Supply Warranty.
Save money on getting your automation parts repaired for less, backed by our 2-year DO Supply Warranty. We offer quality repairs at the best prices, carried out by expert technicians.
We want to buy your industrial automation surplus equipment, including PLCs, drives, motors, HMIs, and more.
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Discover insightful industry knowledge
Although a PLC installed on a vibrating conveyor frame in a steel mill and a PLC sitting in a climate-controlled control room can belong to the same product family, the technical choices made for each installation are very different. Compared to traditional factory automation, industrial control systems utilized in hazardous or toxic industrial environments need to have far more robust designs and better environmental ratings. Corrosive vapors, conductive dust, explosive gases, excessive humidity, loud electrical noise, and extremely high or low temperatures can all be found in these settings. Buying a more costly processor is not the only option when designing a PLC system for these circumstances. Conformal coating, vibration mounting, thermal management, enclosure selection, EMI shielding, and hazardous area classification are all systems engineering tasks that must be completed at different stages of the design process. Understanding the particular environmental stresses the PLC...
Modern mobile machinery and modular skid systems rely on Human Machine Interface (HMI) devices for real-time visibility, reliability, and durability in rugged operating environments. Rockwell Automation PanelView operator interfaces are designed for machine-level monitoring, control, diagnostics, and visualization. When properly mounted and protected, PanelView terminals can be used on portable industrial equipment, mobile skids, and machine-mounted control stations where operators need local visibility into machine status, alarms, diagnostics, and process conditions. This allows operators to quickly understand machine status and respond to faults and process changes. PanelView Plus 7 Standard terminals are designed for easy programming and integrate with Rockwell Automation architectures. These interfaces dynamically visualize operating information, making them suitable for systems that require quick operation and troubleshooting. The PanelView Plus 7 Standard series is intended for...
Safety is the foundation of hazard-free and reliable industrial applications. DC drives operate at hazardous current and voltage levels to regulate the field current and armature voltage, thereby precisely controlling motor speed, torque, and direction. Therefore, strict adherence to established electrical safety protocols such as proper grounding, isolation, and Lockout/Tagout (LOTO) procedures, as well as compliance with IEC 61800-5-1 standards, is essential in DC drive systems. It helps isolate dangerous voltages and minimize arc flash hazards, protecting both personnel and machinery from catastrophic electrical faults. This article provides a detailed technical analysis of the essential safety considerations for designing, operating, and maintaining DC drive systems. A DC drive system is an electronic motor controller designed to regulate the torque, speed, and rotational direction of a DC motor. It achieves this by actively modulating the current and voltage applied to the...