Papermaking

Technology Integration

Modern paper mills require precision control with line speeds exceeding 200 m/min (2025 benchmark). Key technologies include:  

1. Sensing Systems:  

   - SICK DFS60 Encoder: 16384 PPR resolution monitors dryer speed (≤0.001% error) at 85℃；  

   - P+F UC2000 Ultrasonic Sensor: Measures roll diameter (±1mm) to adjust winding tension。  

2. Variable Frequency Drives (VFD):  

   - Emerson TD3000: Delivers 150% torque at zero speed, cuts dryer deceleration time by 60% (vs. 1 min baseline)；  

   - ABB ACS800: Load-sharing algorithm limits motor torque deviation to ≤3% in drying sections。  

3. Control & Protection:  

   - P+F RIF Relays: IP67 rating controls coating valves (≤20ms response)；  

   - ABB AF Contactors: 40A rating with short-circuit protection ensures 100k+ starts/stops。  

Operational Impact  

- SICK/P+F sensors reduce web breaks 40%；  

- VFDs with PLCs (e.g., Siemens S7-1500) cut energy use 25%；  

- Smart mills achieve 15-minute fault response and 92% capacity utilization (2025)。