CNC Standing Elevator Temperature and Humidity PLC Control Cabinet

Operation Control

• Receives and processes car/landing calls via PLCs or embedded controllers

• Dynamically calculates optimal routes using destination dispatch algorithms

• Regulates traction motor/VVVF drives for smooth acceleration/deceleration and floor-leveling (±5mm accuracy)

Safety Protection

• Hardwired to safety chain (governors, door locks, overspeed switches)

• Real-time monitoring for faults:
  ✓ Over-speed (≥115% rated speed)
  ✓ Door obstruction (mechanical + IR detection)
  ✓ Overload (load cell + current sensing)

• Immediate safety shutdown via EN 81-20 compliant braking system

Condition Monitoring

• Tracks operational parameters:
  • Car position (absolute encoder feedback)
  • Instantaneous speed (tachometer/PWM analysis)
  • Load weight (strain gauge ±2% accuracy)

• Provides predictive maintenance alerts through:

  • HMI status codes (ISO 18738-1 standard)

  • Remote monitoring interfaces (Modbus TCP/OPC UA)

System Coordination

• Synchronizes door operator timing (open/close speed profiles)

• Manages auxiliary systems:
  • LED lighting (scheduled dimming)
  • Ventilation fans (CO₂-based activation)
  • Regenerative power recovery (when equipped)