Overview
The Allen-Bradley 847H-HN2A-RG02500 encoder is an incremental rotary encoder designed for precision motion control and positioning applications. This encoder features a solid shaft with standard servo mount configuration and delivers reliable feedback for industrial automation systems. With 2500 pulses per revolution (PPR), it provides excellent resolution for speed and position monitoring in PLCs, servo drives, and motion control applications.
Key Features
- 2500 PPR resolution — provides precise shaft speed and position feedback
- Standard servo mount — compact flange design fits common industrial servo motor configurations
- 3/8″ solid shaft with flat — reliable coupling interface with minimal runout
- Line driver TTL output — 4.5–5.5 V digital signal compatible with industrial controllers
- MS 10-pin connector with mating cable — plug-and-play connectivity, radial exit design
- B leads A, CW, Z gated — standard quadrature output with index pulse for homing and zero reference
Technical Specifications
- Type: Incremental rotary encoder
- Mounting: Standard servo mount (2.5″ diameter)
- Shaft diameter: 3/8″ solid shaft with flat
- Output resolution: 2500 pulses per revolution (PPR)
- Supply voltage: 8–30 V DC
- Output signal: 4.5–5.5 V line driver (TTL)
- Connector type: MS 10-pin with mating connector, radial exit
- Output format: Quadrature (B leads A, CW direction, Z index gated with BN)
Typical Applications
- Servo motor feedback and speed monitoring
- Position control in CNC and machine tool applications
- Motion tracking and velocity measurement
- Conveyor belt and transport system monitoring
- Automation and robotics motion feedback
- Industrial drive commissioning and diagnostics
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix, ControlLogix, and Micro800 PLCs via analog input or high-speed counter cards
- Rockwell Automation servo drives and motion controllers
- EtherNet/IP and serial communication networks
- Any industrial controller with TTL quadrature input (channels A, B, Z)
- Studio 5000 ladder and structured text programming environments
Replaces / Drop-In Replacement For
- 847H-DN2A-RG02500 (square flange variant)
- Earlier 847H series encoders with matching shaft, voltage, and connector specifications
- Verify specific replacement compatibility with your motion control application before ordering
Works With
- Studio 5000 (RSLogix 5000) high-speed counter and analog input modules
- Panelview and FactoryTalk HMI systems for real-time feedback display
- Kinetix servo drives with encoder feedback terminals
- EtherNet/IP scanners for networked motion control
- Industry-standard quadrature decoder modules and motion control cards
