Application：
1, Introduction:
The Let-off Control System is the core intelligence that transforms a standard knitting machine into a high-performance production asset. By replacing outdated mechanical systems, our solution delivers unparalleled control over the yarn feed, ensuring flawless fabric quality, maximizing efficiency, and enabling rapid production of complex designs.
2, System Overview: Intelligent Integrated, and Agile
Our system is a fully integrated, servo-driven solution designed for the most advanced warp knitting machines. It consists of:
- High-Precision Servo Motors: Provide accurate and responsive torque control for each beam.
- Digital Encoders: Offer real-time, closed-loop feedback on beam rotation and yarn speed.
- Centralized PLC Controller: The brain of the operation, executing complex algorithms to maintain perfect yarn tension.
- User-Friendly HMI (Human-Machine Interface): Allows operators to input parameters, monitor production, and diagnose issues with ease.
3. Key Features & Technical Advantages
- Ultra-Precise Yarn Tension Control: Maintains consistent tension across all beams throughout the entire production run, from a full beam to an empty one. This eliminates defects like barre marks, variations in density, and dropped stitches.
- Closed-Loop Feedback System: Continuously monitors parameters like actual yarn speed and beam diameter. The system automatically calculates and adjusts the let-off speed in real-time, compensating for any deviations to ensure perfect consistency.
- Recipe Management: Store and recall settings for an unlimited number of fabric designs (patterns, yarn types, densities). Changeover between products is achieved in seconds with a single button press, drastically reducing downtime.
- Real-Time Monitoring & Diagnostics: View critical data such as let-off amount (mm/rack), active reduction ratio, instantaneous yarn speed, and remaining yarn length. The system provides predictive alerts for maintenance and immediate fault diagnosis.
- Seamless Integration: Designed to work harmoniously with all major electronic jacquard (e.g., Jacquard) and EL systems, creating a unified and efficient production cell.
| Applicable machine | Warp knitting machine (Tricot and Raschel） |
| Guide bars | 1-8 bars |
| Control method | Touch panel +PLC |
| Input power | 380V~ 50/60Hz |
| Power of motor and driver | 1.2-3.5 KW |
| Sensor | Incremental encoder |
| Speed control | Variable-frequency Driver(option ) |
| Voltage stabilizer | Isolation transformer(option ) |
| Power-off protection | Capacitor |
| Control cabinet | Customized |
| Maximum supported speed(machine） | 3000RPM |
Keywords
Let-off control system(EBA,EBC)
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Fujian Minter Technology Co., Ltd.
No.2 building Phase II R&D center,Southeast Big Data Industrial Park,2 Hujiang RD,Changle district,Fuzhou,Fujian,China
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