YOKOGAWA F3CU04-OS/CT
Manufacturer: Yokogawa Electric Corporation
Description:
The F3CU04-OS/CT is a 4-channel communication terminal module designed for the CENTUM VP F3 Distributed Control System (DCS). It serves as an interface between the operation station and field devices via the F3 fieldbus network. The module enables seamless data exchange, command transmission, and status monitoring between the central control room and distributed field instrumentation.
Detailed content
Technical Specifications:
- Number of Channels: 4 channels
- Communication Protocol: F3 Fieldbus (FF H1 compatible)
- Communication Speed: 31.25 kbps
- Power Supply Voltage: 24 V DC (±10%)
- Power Consumption: Maximum 3.5 W per module
- Operating Temperature Range: 0°C to +55°C (+32°F to +131°F)
- Storage Temperature Range: -20°C to +70°C (-4°F to +158°F)
- Relative Humidity: 5% to 95% RH (non-condensing)
Functional Features:
- Provides operation station interface for remote monitoring and control
- Enables command distribution from operator stations to field devices
- Supports real-time data acquisition from up to 4 fieldbus segments
- Integrated diagnostic functionality for communication health monitoring
- Supports hot-swappable module replacement without system shutdown
Structural Characteristics:
- DIN rail mountable design
- Compact card-type module form factor
- Dimensions: 25 mm (W) × 160 mm (H) × 115 mm (D) (approximate)
- Weight: Approximately 0.3 kg
- Terminal blocks for fieldbus connection on front panel
Working Principle:
The module connects to the F3 fieldbus network and translates operation station commands into fieldbus messages. It aggregates data from field devices and forwards it to the operation station. The OS (Operation Station) function handles command dispatch, while the CT (Communication Terminal) function manages bidirectional data flow.
Applicable Industries:
- Oil and Gas Refining
- Chemical Processing
- Power Generation
- Pharmaceutical Manufacturing
- Pulp and Paper
Installation Requirements:
- Mount on standard DIN rail (TS 35/7.5 or TS 35/15)
- Install in control cabinet with adequate ventilation
- Maintain minimum 20 mm clearance above and below the module for airflow
- Ensure proper grounding of the fieldbus cable shield at one end only
Precautions:
- Do not exceed the maximum rated voltage of 24 V DC
- Ensure fieldbus terminating resistors (120 Ω) are installed at both ends of the segment
- Avoid installation in areas with excessive vibration or corrosive atmosphere
- Follow Yokogawa grounding standards to prevent ground loops












