Overview
The Allen-Bradley 74102-405 is a terminator plug servo control board assembly designed for the 1394 servo axis module family. This PCB component was engineered to provide termination and control signal conditioning for servo motion applications in legacy Allen-Bradley automation systems. Though discontinued by the manufacturer, the 74102-405 remains a critical component for facilities maintaining or retrofitting existing servo-driven equipment.
Key Features
- Purpose-built terminator plug for 1394-series servo axis modules
- PCB assembly for servo control signal termination and routing
- Compatible with legacy Allen-Bradley servo drive ecosystems
- Fully functional used/surplus unit, tested for operation
- Compact, mountable form factor for easy integration
Technical Specifications
- Product Type: PCB Control Board Assembly
- Form Factor: Terminator Plug / Open Style Mountable
- Manufacturer: Allen-Bradley (Rockwell Automation)
- Part Number: 74102-405
- Series: 1394 Servo Axis Module Family
- Status: Discontinued by Manufacturer
- Unit Condition: Used / Surplus
- Weight: Approximately 0.05–0.37 lbs (varies by variant)
- Certifications: UL 508 (industrial control)
Typical Applications
- Servo drive system termination and signal conditioning
- Legacy motion control system repairs and maintenance
- Industrial equipment retrofitting (packaging, material handling, machine tools)
- Factory automation line upgrades where 1394-based servo architecture persists
- OEM equipment support for mid-2000s to early-2010s-era machinery
Compatibility & Replacements
Compatible With
- Allen-Bradley 1394 Servo Axis Modules (legacy series)
- Rockwell Automation ControlLogix and CompactLogix systems with 1394 distributed servo I/O
- Studio 5000 Logix Designer v15–v30+ (firmware compatibility depends on system configuration)
- EtherNet/IP networks using 1394-AM07 and similar axis controllers
Replaces / Drop-In Replacement For
- Original Allen-Bradley 74102-405 units
- 74102-405-54 variant (terminator connector revision)
- 74102-405-53 variant (alternate configuration)
Works With
- Studio 5000 Logix Designer (servo axis configuration module)
- EtherNet/IP communication protocol
- Integrated Architecture® motion control framework
- FactoryTalk engineering and asset management platforms
Note: Verify compatibility with your system integrator before ordering. This is a legacy discontinued board component; installation and firmware alignment should be confirmed with a controls engineer familiar with 1394-era servo systems.
