Application Scenarios:
In a high-speed automated warehousing system, a stacker crane must position its lifting carriage with millimeter precision across aisles that are dozens of meters high. The positional feedback for the crane’s hoist motor is critical. A Hengstler SYHNC100-NIB-23 SSI encoder is mounted directly onto the motor shaft. Its robust 100mm housing and 23mm hollow shaft withstand the constant vibration and shock. The synchronous serial (SSI) output provides absolute-like positional data over a simple, noise-resistant two-wire pair, immune to the electrical interference from nearby motor drives. This ensures the control system always knows the exact carriage height, enabling fast, accurate, and safe retrieval and placement of pallets, directly solving the pain points of positioning accuracy, reliability in harsh environments, and system safety.
Key Parameters (Decoded from Part Number):
Core Specifications (Typical for this Type):
Type: Incremental Rotary Encoder
Output Type: Synchronous Serial Interface (SSI)
Signal: Typically clock & data (push-pull RS422)
Housing Diameter: 100 mm
Shaft Type: 23 mm Hollow Shaft (with clamping flange)
Supply Voltage: 24 V DC
Resolution: Determined by A012 variant (e.g., 1024. 2048. 4096 pulses per revolution – PPR)
Max. Speed: High (e.g., 5000 – 8000 rpm, subject to E23 code)
Connection: D-Sub connector
Protection Class: Typically IP65 (dust-tight and protected against water jets)
Technical Principles and Innovative Values:
Innovation Point 1: Noise-Immune Synchronous Serial Interface (SSI). Unlike incremental encoders with pulse train outputs (A/B/Z) susceptible to electrical noise and pulse loss at high speeds, the SYHNC100-NIB-23 uses an SSI interface. The controller sends a clock signal, and the encoder synchronously returns a complete digital position value. This method is extremely robust over long cable runs in electrically noisy industrial environments, providing highly reliable data integrity for critical positioning.
Innovation Point 2: Robust Hollow Shaft Design for Direct Integration. The 23mm hollow shaft allows for direct mounting onto the motor or machine shaft, eliminating the need for flexible couplings. This rigid mounting minimizes installation errors (like shaft misalignment) and potential mechanical play, ensuring the encoder feedback directly and accurately represents the true shaft position. The design is ideal for high dynamic applications with frequent starts/stops and reversals.
Innovation Point 3: Industrial-Grade Construction for Harsh Environments. Housed in a rugged 100mm diameter metal casing, this encoder is built to withstand the rigors of the factory floor. It typically offers a high IP protection rating (e.g., IP65), making it resistant to dust, oil, and water spray. This durability ensures long-term, maintenance-free operation in challenging conditions like paper mills, printing presses, or outdoor machinery.
Application Cases and Industry Value:
A steel processing line uses heavy-duty rotary shears to cut coiled steel to length. The precise synchronization of the shear blade rotation with the moving strip is paramount. An analog tachometer system was causing occasional timing errors, leading to ragged cuts and tons of scrap per month. The system was upgraded with a Hengstler SYHNC100-NIB-23 SSI encoder on the main shear drive. The encoder’s SSI output provided absolute angular position of the shear to the PLC with zero transmission error. This allowed for perfect electronic gearing between the strip feed and the shear. The result was a near-perfect cut quality and a reduction in scrap by over 95%. The maintenance lead reported, “Switching to the SSI encoder was a game-changer. The data is rock-solid. We’ve eliminated an entire class of quality defects and significantly reduced our material waste.” This demonstrates the encoder’s value in enabling precise electronic synchronization, dramatically improving product quality and raw material yield.
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