In polyester long filament production, the spinning box plays a vital role in determining fiber quality. The box must maintain precise temperatures across multiple heating zones to ensure consistent polymer viscosity and smooth filament extrusion. Any temperature fluctuation or imbalance between zones can directly affect the fiber’s tensile strength, uniformity, and dyeing performance.
ARMxy Main Controller – central control unit for executing control algorithms and managing process data
Y-AI Board – collects multi-point temperature data from each heating zone
X-DO Board – switches heater contactors with 220V AC outputs
Accurate Temperature Measurement
The Y-AI board connects to PT100 three-wire resistance temperature detectors (RTDs), enabling accurate temperature measurement with automatic lead resistance compensation. This ensures minimal measurement error even over long cable runs.
Multi-Zone PID Control
The ARMxy controller runs 12 independent PID control loops, each corresponding to a heating zone within the spinning box. This allows precise temperature regulation for each section, adapting quickly to process changes.
Flexible Heating Management
The X-DO board controls the switching of heater groups via contactors. Each output delivers 220V AC, allowing safe and efficient heater operation.
Recipe-Based Production – Supports remote downloading of process recipes for different product grades, reducing downtime during production changeovers.
Advanced Sensor Compensation – The Y-series AI board implements an automatic compensation algorithm for three-wire RTDs, improving accuracy in industrial environments.
OpenPLC Integration – OpenPLC enables quick configuration and deployment of multi-zone control logic without complex proprietary programming tools.
By combining the ARMxy industrial controller, Y-series AI temperature acquisition boards, and X-series DO control modules, this solution achieves highly accurate, stable, and flexible temperature control for polyester spinning boxes. It enhances production efficiency, product consistency, and operational convenience—making it a robust choice for modern chemical fiber plants.
