The RELIANCE 57C413B is an enhanced common memory module designed for AutoMax and DCS 5000 industrial control systems. It adopts a single-slot rack mounting structure, serving as shared data storage and bus management unit inside the control rack. This revised version features upgraded circuit components and optimized circuit design for higher operational stability and anti-interference performance. It supports data sharing, bus arbitration and power-off data retention for multi-processor configurations, delivering reliable operation in various industrial environments.

RELIANCE is the brand of industrial control products. 57C represents the system and I/O module series of the AutoMax platform. 413 is the base model code for common memory modules. The suffix B stands for the second hardware revision. This module is fully interchangeable and compatible with 57C413 and 57C413A, and works well with standard AutoMax racks and system firmware.

The module is equipped with 256 KB shared memory space for data storage and exchange. It is powered by the rack backplane with a working current of about 1.05 A under 5 VDC. It adopts dual backup solutions consisting of 3.6 V lithium battery and super capacitor to protect data after power failure. The data can be retained for 600 to 2000 days with normal battery supply, and 130 to 400 minutes relying on capacitor alone. The operating temperature ranges from 0 degrees Celsius to 60 degrees Celsius, and applicable relative humidity is between 5 percent and 90 percent without condensation. Two status indicators on the front panel display system running state and battery condition in real time. This module is normally installed in slot 0 of the rack for multi-processor bus management.

The rear connector connects to the rack backplane to obtain power and realize high-speed parallel data communication with all processor modules in the rack. All data transmission follows the exclusive bus protocol of AutoMax system. The module undertakes bus arbitration work to coordinate backplane access requests from multiple processors. There are no external wiring terminals or communication ports on the front panel, only status indicators for operation monitoring. All signal and data interaction is completed through the backplane.

It provides global shared memory to realize real-time data exchange and parameter synchronization among multiple processors in the same rack. It performs bus arbitration to effectively avoid access conflicts when multiple modules occupy the backplane simultaneously. It keeps stored data intact for a long time with battery and capacitor backup after system power outage. It runs system watchdog monitoring to track the overall operating status of the control rack. It also detects battery performance and sends reminder when the battery needs replacement.

This module is mainly applied to multi-processor control racks based on AutoMax and DCS 5000 platforms. It is widely used in steel production, papermaking, chemical processing, power generation, mechanical manufacturing and other industries. It is suitable for complex automation systems that require coordinated operation of multiple controllers and long-term preservation of operating data and configuration parameters.

Cut off the entire system power supply before installing or removing the module. Insert the module into the designated slot and ensure firm and reliable connection with the backplane. Use qualified 3.6 V lithium battery for data backup and replace the battery timely once the battery alarm appears. Take anti-static measures during battery replacement and module maintenance. Keep the operating environment clean, dry and well ventilated, and stay away from dust, moisture and corrosive substances. Regularly check the working status of indicators and connections. Do not disassemble or modify the module without authorization. Replace it with the same model in case of faults to guarantee continuous and stable system operation.