Product Overview: Heidenhain 749144-01 (EQN 1336)
The Heidenhain 749144-01 is a state-of-the-art absolute multiturn rotary encoder from the EQN 1300 series. Specifically designated as an EQN 1336, this encoder is engineered for high-performance motion control, providing a purely digital EnDat 2.2 serial interface. It is a critical component for high-end servo motors and robotic systems where absolute position data is required immediately upon power-up, eliminating the need for time-consuming reference runs.
Advanced Digital Feedback and EnDat 2.2
The EQN 1336 offers an exceptional resolution, typically providing 20 bits (over 1 million positions) per revolution in its singleturn section, and 12 bits (4096 revolutions) for its multiturn capability. The EnDat 2.2 interface is the industrial benchmark for speed and reliability, allowing for high-speed data transfer while maintaining extreme immunity to electromagnetic interference (EMI). This makes the 749144-01 ideal for complex multi-axis machinery where signal integrity is non-negotiable.
Key Technical Characteristics
- Part Number: 749144-01.
- Model: EQN 1336.
- Interface: EnDat 2.2 (Purely Serial).
- Resolution (Singleturn): 20 Bit.
- Multiturn Range: 12 Bit (4096 revolutions).
- Shaft: Tapered shaft 1:10 (9.25mm).
- Power Supply: 3.6V to 14V DC.
- Mechanical Speed: Max. 12,000 rpm.
- Protection Class: IP40 (stator side) / IP64 (housing).
Mechanical Excellence and Thermal Stability
Heidenhain encoders are renowned for their mechanical robustness. The 749144-01 features an integrated stator coupling that effectively compensates for axial play and radial runout of the motor shaft, ensuring that measurement accuracy remains within ±20 arc seconds. Its optical scanning technology utilizes the DIADUR graduation process, which provides extreme resistance to vibration and ensures thermal stability across a wide temperature range, essential for precision milling and aerospace manufacturing.
| Characteristic | Detail |
| Absolute Positions | 1,048,576 per revolution |
| System Accuracy | ±20″ |
| Shock Resistance | 1000 m/s² (6 ms) |
Frequently Asked Questions
Does this encoder support Functional Safety (FS)? Yes, many EQN 1336 variants are designed for safety-related applications up to SIL 2 or PL d. Can it store motor parameters? Yes, the EnDat 2.2 interface allows the encoder to store electronic ID labels for automatic drive configuration.
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