Beckhoff EL5101 Differential Digital Input Module
Core Positioning and Functions
Advanced 1-channel incremental encoder interface with EtherCAT terminal technology for precision industrial applications.
- Simultaneously supports differential RS422 and TTL single-ended input signals
- Quadrature 4x decoding with maximum input frequency of 1 MHz (equivalent to 4 MHz increments/second)
- Standard distributed clock (DC) for high-precision synchronization across systems
- Advanced features including disconnection detection, latching/strobing, period/frequency measurement
- Micro-increment resolution of 1/256 bit with edge timestamp and digital filtering capabilities
- 2 additional 24V digital inputs for counter storage, blocking, and setting functions
- 5V encoder power supply (maximum 0.5A, converted by 24V contacts)
- 500V electrical isolation between E-bus and field potential for superior industrial interference resistance
Technical Specifications
| Number of Channels |
1-channel incremental encoder (A/B/C), differential RS422/TTL Single-ended |
| Input Frequency |
1 MHz (4 times frequency corresponds to 4 M increments/second) |
| Counter |
1*16/32 bit switchable |
| Micro Increment |
1/256 bit |
| Encoder Power Supply |
5 V DC, 0.5 A maximum |
| Auxiliary Inputs |
2*24 V DC digital inputs (strobe/latch) |
| E-bus Current Consumption |
Typical 130 mA |
| Power Contact Current |
Typical 100 mA + encoder load |
| Operating Voltage |
24 V DC (-15%/+20%) |
| Electrical Isolation |
E-bus / field potential 500 V |
| Operating Temperature |
-25℃ to +60℃ |
| Storage Temperature |
-40℃ to +85℃ |
| Protection Rating |
IP20 |
| Dimensions |
24 mm * 100 mm * 52 mm (35 mm DIN standard size) |
| Weight |
Approximately 100 g |
| Certifications |
CE, UL, CCC, ATEX, IECEx |
Installation and Applications
Designed for easy integration into industrial control systems with versatile application capabilities.
- Installation: 35 mm DIN Guide rail (EN 60715), standard terminals side-by-side splicing, equipped with ESxxxx pluggable terminal blocks
- Machine tool spindle and feed axis position feedback systems
- Automated production line conveyor axis positioning
- Printing and packaging machinery registration control
- Elevator and lifting equipment speed and position monitoring