The Yokogawa ACF11 is a fieldbus communication module designed for integration with Yokogawa’s CENTUM CS distributed control system (DCS). It facilitates seamless data exchange between the DCS and field devices, ensuring efficient process control and monitoring.

Technical Specifications

• Module Capacity: Supports up to 80 modules (10 modules per RIO node, up to 8 nodes).
• Fieldbus Connections: One connection per ACF11 module.
• Communication Speed: 31.25 Kbps in voltage wire mode.
• Connection Method: Uses 4-mm screw terminals for wiring.
• Bus Power Supply:
  • Output voltage: 18 to 20 V DC (fixed at 19 V DC).
  • Continuous output current: 80 mA maximum (with overcurrent limiter).
  • Transitional output current: 100 mA maximum (for a duration of 2 ms).
• Dimensions: 188 mm (D) × 215 mm (H) × 43.6 mm (W).
• LED Indicators: RDY, CTL, RCV, and SND indicators for system status.
• Withstanding Voltage: 1500 VAC tested between fieldbus and system.
• Maintenance: Online maintenance possible for both the module and cable connections.
• Compliance: CE marking (as part of the CENTUM CS system).