Overview
The BEI MX213-25-1024U is a precision rotary optical encoder from BEI Motion Systems, part of the MX21 INSTA-MOUNT modular series. This encoder delivers 1024 pulses per revolution (PPR) with differential output signaling, making it ideal for applications requiring accurate position feedback and velocity measurement in motion control systems. The compact 25 mm shaft mount footprint enables drop-in replacement in existing automation assemblies.
Key Features
- 1024 pulses per revolution (PPR) resolution for precise position sensing
- Differential output (U suffix) for noise-immune signal transmission
- INSTA-MOUNT modular design enables quick installation and removal
- Optical sensing technology ensures durability and repeatability
- Compact 25 mm diameter footprint
Technical Specifications
The following specifications are derived from the MX21 modular encoder platform documentation:
- Resolution: 1024 PPR (pulses per revolution)
- Output Type: Differential (TTL/CMOS compatible)
- Series: BEI MX21 INSTA-MOUNT modular encoder
- Shaft Mount: 25 mm standard coupling
- Sensing Technology: Optical (LED-based)
- Connector: Industry-standard 19-pin encoder interface
- Installation Method: Direct motor shaft mount with #4-40 fasteners
Typical Applications
- Industrial servo motor feedback and closed-loop control
- Position sensing in automated manufacturing equipment
- Velocity and acceleration measurement in drive systems
- Motion control in packaging and material handling machinery
- Robotics and multi-axis positioning systems
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix and ControlLogix PLCs with analog or high-speed input modules
- Siemens S7-1200 and S7-1500 with analog input cards
- Any motion controller or servo drive accepting differential encoder signals
- Standard industrial automation platforms supporting 1024 PPR incremental encoders
Replaces / Drop-In Replacement For
The BEI MX213-25-1024U directly replaces other MX21 series encoders with identical shaft diameter and mounting footprint. Verify exact model compatibility with your original encoder designation before ordering. Common predecessor models in the MX21 family include MX212 and earlier MX20 series units with the same 25 mm mounting; however, verify pinout and resolution specifications match your application.
Works With
- Studio 5000 (Allen-Bradley ControlLogix ladder logic)
- TIA Portal (Siemens S7 programming environment)
- EtherNet/IP and PROFINET encoder modules
- Any quadrature encoder input module accepting differential TTL signals
- Industrial motion control software requiring 1024 PPR feedback
