RELIANCE 57C-413A upgraded common memory module_Ningde Androld Automation Equipment Co.,Ltd.

June 01, 2026

RELIANCE 57C-413A upgraded common memory module

The RELIANCE 57C-413A is an upgraded common memory module for AutoMax / DCS‑5000 distributed control systems. It provides shared memory and bus arbitration for multi‑processor racks, storing system configuration, I/O definitions and global data that all processors can access. The A‑suffix version is a hardware revision of the base 57C-413, offering compatible functionality with minor component and reliability enhancements for industrial environments.

Description

Product Overview

Model Definition

RELIANCE = Brand (Reliance Electric, later ABB/Baldor).57C = AutoMax platform system & I/O module series.413 = Base model for common memory module.A = Hardware revision A, functionally interchangeable with 57C-413 with updated components.

Technical Parameters

Memory Size: 64K words (256 KB) common RAM.
Backplane Power: 5 VDC @ 1050 mA (1.05 A).
Data Retention (Battery): 600–2000 days (3.6 V AA lithium battery).
Data Retention (Capacitor Only): 130–400 minutes.
Operating Temperature: 0°C to +60°C.
Humidity: 5%–90%, non‑condensing.
Status LEDs: SYSTEM WATCHDOG (green), BAT.OK (battery status).
Slot Requirement: Primary slot 0 for multi‑processor arbitration; also usable in single‑processor racks.
Compatibility: AutoMax, DCS‑5000 systems.

Interface and Communication Configuration

Rear edge connector interfaces with the AutoMax backplane for power and high‑speed parallel data communication with all rack processors. Communication uses the proprietary AutoMax backplane protocol. Front panel has no user ports, only status LEDs. The module performs bus arbitration to coordinate access when 2–4 processors share the backplane.

Core Functions

Shared Memory: 256 KB global data space for inter‑processor data exchange and parameter synchronization.
Multi‑Processor Bus Arbitration: Resolves access conflicts in multi‑processor racks.
Non‑Volatile Data Protection: Lithium battery + supercapacitor backup preserves data during power loss.
System Watchdog: Monitors system health; LED flashes during normal operation.
Battery Health Monitoring: BAT.OK LED indicates battery status and replacement need.

Application Scenarios

Multi‑processor AutoMax/DCS‑5000 racks (2–4 processors).
Industrial motion control: steel, paper, cranes, machine tools.
Systems requiring global data sharing and controller synchronization.
Applications needing long‑term data retention without power.

Operation and Maintenance Instructions

Installation: Power off the rack before insertion. Install in slot 0 for multi‑processor systems; ensure firm backplane contact.
Battery: Use 3.6 V AA lithium battery. Replace when BAT.OK LED is off; observe anti‑static measures.
Environment: Maintain clean, dry, ventilated conditions; avoid moisture, dust, corrosive gases.
Inspection: Periodically check LEDs and connections; do not disassemble.
Replacement: Use 57C-413A or compatible 57C-413 to preserve compatibility and data integrity.

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