Product

The Medar 917-0042 is an integrated industrial rack-mountable processing module that functions as a specialized Weld Control Card for high-precision resistance spot welding. Designed to slide directly into an Allen-Bradley 1771 I/O chassis, it serves as the core intelligence link between a centralized factory Programmable Logic Controller (PLC-5 or similar architectures) and the welding hardware on the plant floor. The board is engineered to calculate, execute, and monitor complex multi-step weld schedules, controlling critical factors such as squeeze time, firing currents, and hold sequences. By managing thyristor/SCR firing signals with microsecond precision, it guarantees high-repeatability weld joints while protecting the power infrastructure from destabilizing electrical surges.

Application

Other Products

Our Company

FAQ

Q: How does Allen-Bradley handle cybersecurity in modern industrial control systems?

A: AB has embedded cybersecurity at multiple levels.

· Defense-in-depth design includes features like controller-level identity validation, digital signatures for firmware, and user role-based access control.

· Converged Plantwide Ethernet (CPwE) architectures, developed jointly with Cisco, provide network segmentation, firewalls, and intrusion detection.

· AB controllers also support secure communication protocols (e.g., CIP Security™ over EtherNet/IP) and secure firmware updates.

For critical assets, the FactoryTalk® AssetCentre centralizes security policies, audit logs, and disaster recovery. Regular security advisories and patching tools are provided through Rockwell’s Knowledgebase.

Q. Does Allen-Bradley offer high availability and redundancy for mission-critical processes?

A: Yes, AB provides several redundancy solutions:

· ControlLogix Redundancy uses two chassis with synchronised memory and bumpless switchover for I/O, controller, and network failures. Typical switchover time is less than 20 ms.

· For applications requiring high process availability, the PlantPAx® DCS (Distributed Control System) builds on ControlLogix with redundant power supplies, I/O, and Ethernet infrastructure.

· Drives like PowerFlex 755 offer embedded redundancy options.

These solutions are widely used in oil & gas, water/wastewater, and power generation where unexpected downtime is not acceptable.

Disclaimer

Ewolomodule sells new and surplus products and develops channels for purchasing such products. This website has not been approved or recognized by any of the listed manufacturers or trademarks.

Ewolomodule is not an authorized distributor, dealer, or representative of the products displayed on this website. All product names, trademarks, brands, and logos used on this website are the property of their respective owners. The description, explanation, or sale of products with these names, trademarks, brands, and logos is for identification purposes only and is not intended to indicate any association with or authorization from any rights holder.