Model Explanation 0-57407-3E

0-57407: Basic model (AutoMax system central processing unit CPU card)

3: Hardware version 3rd generation

E: Enhanced / Wide Temperature Enhanced Version (0~60°C, enhanced EMC, enhanced anti-interference)

Full name: Processor Module (CPU)

Compatibility: AutoMax chassis; can be directly replaced with 0-57407-1/2/3/4 and A/B/C/D/E/F/H versions; used in conjunction with 0-57406 series (driver control card).

Technical parameters (official)

Manufacturer: Reliance Electric (now Rockwell Automation)

Processor: Intel 80286 16/32-bit CPU, hardware watchdog

Program memory: 512KB RAM / 1MB EPROM (larger than 0-57406)

Data memory: 256KB battery-backed RAM

System bus: AutoMax backplane high-speed bus (for communication with I/O and driver cards)

Communication interfaces:

PROGRAMMER: 25-pin serial port (programming / downloading program)

LOCAL COMM: 25-pin serial port (upper computer / touchscreen communication)

Operating temperature: 0°C ~ +60°C (wide temperature, E version enhanced heat dissipation)

Isolation: 2500 VAC photoelectric isolation between backplane and control circuit

Size: 342 × 190 × 30 mm (standard 1.25" slot)

Weight: Approximately 1.0 kg

Power consumption: ≤22 W

Protection: IP20

Front panel interfaces and indicators

Dual-digit display (FAULT CODE): Displays fault codes (00 = normal)

OK (green): CPU running normally

FAULT (red): Program / hardware / communication failure

2×25-pin serial ports:

Top: PROGRAMMER (connects to programmer)

Bottom: LOCAL COMM (connects to upper computer)

Up and down clamps: One-click insertion and removal, supports hot swapping Core function

System main control CPU: AutoMax/DCS 5000 core, capable of executing ladder diagrams, BASIC, and control block programs.

Multi-task scheduling: Coordinating I/O modules, driver control cards (0-57406 series), and network communication.

High-speed data processing: Managing up to 16-axis motion control, analog closed-loop, interlock protection.

Enhanced E-version features: Wide temperature range of 0~60°C, enhanced EMC anti-interference, component aging screening, suitable for harsh conditions.

Hot-swappable redundancy: Rack replacement while powered on, supporting dual CPU redundancy operation.

Version differences (0-57407-x)

0-57407-1: First generation, 0~50°C, basic functions

0-57407-2: 0~55°C, enhanced heat dissipation

0-57407-3E: 0~60°C, wide temperature range + EMC enhancement, mainstream stable version

0-57407-4H: 0~60°C, triple protection coating + high stability, top configuration

Typical applications

System: Reliance AutoMax / DCS 5000

Industry: Metallurgy, papermaking, water treatment, power, heavy machinery

Purpose: Automation of entire production line, multi-motor synchronization, drive cluster control, high-speed and high-precision motion control.

Installation and maintenance Installation

Disconnect the power supply, insert the machine frame CPU slot, lock the latch; connect the programming/communication cables.

Power on OK light is on, the digital display shows 00, indicating normal operation. The system automatically recognizes I/O and the driver card.

Maintenance

Quarterly: Check the LED status, communication connectors, and latch tightness.

Half-yearly: Disconnect for anti-static cleaning of the panel and slots.

Replacement: The 3E model can directly replace the 1/2/3 versions; upgrading to 4H does not require program modification.