Model Definition

• 0-54339: Basic memory board family

• -10: Hardware revision 10

• Status: Discontinued OEM; available as NOS, refurbished, or used

• Cross-References: 0-54339-1 (rev1), 0-54339-14 (rev14, drop-in upgrade)

Technical Specifications

• Power: 5 VDC from backplane, ~6 W

• Form Factor: 3U PCB (248 × 171 × 25 mm)

• Weight: ~0.6 kg

• Operating Temp: 0 °C to +55 °C

• Memory: 16 KB SRAM (volatile, battery-backed)

• Battery: 3.6 V lithium (data retention ~5 years)

• Components: 55+ ICs, resistor arrays, capacitors, transistors

• Diagnostics: Power/memory LED; test points for troubleshooting

Interfaces & Communication

• Backplane: 3U edge connector for AutoMax/MaxPak/Automate 31 racks

• Memory Bus: Parallel interface to CPU via backplane

• Battery Connector: Onboard socket for backup battery

• No External Ports: All I/O via backplane

Key Features

1. 16 KB Battery-Backed SRAM: Stores user programs, I/O data, and system parameters

2. Rev 10 Hardware: Improved component tolerance and thermal stability vs. rev -1

3. Drop-In Compatible: Works with all Automate 31 CPUs and backplanes

4. Industrial Reliability: Designed for harsh factory environments

5. Direct Replacement: Swaps with rev -1/-14 memory boards

Application

• PLC Systems: Automate 31 PLC racks (primary memory module)

• Drive Systems: AutoMax/MaxPak AC/DC drives (parameter storage)

• Industries: Steel, paper, mining, machine tools, cranes, conveyors

• Use Cases: Retrofits, memory upgrades, obsolete board replacement

Compatibility

• Compatible Systems: AutoMax/MaxPak Drives, Automate 31 PLC

• Compatible CPUs: 0-53107, 57C430, 57C431, 57C435

• Backplane: 3U slot in standard Reliance rack