Model Definition

• 0-54339: Basic memory board family

• -6: Early hardware revision 6 (predecessor to -10/-14/-17)

• Status: Discontinued OEM; less common than -10/-14/-17

• Cross-References: 0-54339-1 (rev1), -10 (rev10), -14 (rev14), -17 (rev17); -17 is recommended drop-in replacement

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: 50+ ICs (older generation), resistor arrays, capacitors

• Diagnostics: Single power/memory LED; basic test points

Interfaces & Communication

• Backplane: 3U edge connector (compatible with AutoMax/Automate 31 racks)

• Memory Bus: 16-bit parallel interface

• Battery Connector: Onboard socket for backup battery

• No External Ports: All connections via backplane

Key Features

1. 16 KB Battery-Backed SRAM: Standard capacity for early Automate 31 systems

2. Early Rev 6 Hardware: Original component layout, older firmware, less noise immunity than later revisions

3. Backward Compatible: Fits all Automate 31 CPUs (0-53107, 57C430/431/435) and backplanes

4. Industrial-Grade Durability: Designed for factory environments (steel, paper, mining)

5. Legacy Replacement: Suitable for direct swap in old systems; upgrade to -17 recommended for reliability

Application

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

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

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

• Use Cases: System retrofits, memory board replacement in early installations

Compatibility

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

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

• Backplane: 3U slot in standard Reliance rack

Critical Notes

• Revision Differences: -6 has older PCB layout and firmware; later revisions (-10/-14/-17) improved thermal performance and component reliability

• Replacement: If -6 fails, 0-54339-17 is the best direct replacement (higher reliability, same 16 KB)

• Availability: -6 is less common than -10/-14/-17; sourcing may take longer