Description
YOKOGAWA VF701S3 Vnet/IP Communication Module
Product Dimensions:
The Yokogawa VF701S3 is a high-performance Control Bus Interface Card used in Yokogawa’s CENTUM VP and CENTUM CS 3000 Distributed Control Systems (DCS). It enables high-speed, real-time communication between control stations (FCS), human interface stations (HIS), and expansion units over Yokogawa’s Vnet/IP network.
Product Detailed Description
The VF701S3 module serves as the communication bridge in a CENTUM DCS topology. Installed directly into the PCI/PCI Express bus slot of a host station (such as an HIS or software-based control unit), it offloads network protocol execution from the host CPU.
The “S3” variant designates an upgraded hardware platform featuring dual Gigabit Ethernet ports, facilitating seamless hardware-level redundancy for uninterrupted industrial network control.
Technical Parameters
| Feature | Specification |
| Model | VF701S3 (Part No. VF701S3-S50 / S60 series) |
| Manufacturer | Yokogawa Electric Corporation |
| System Compatibility | CENTUM VP / CENTUM CS 3000 DCS |
| Bus Interface | PCI Express (PCIe) slot interface |
| Network Protocol | Vnet/IP (Yokogawa proprietary real-time control protocol over Ethernet) |
| Transmission Rate | 1 Gbps (1000BASE-T) / 100 Mbps auto-negotiation |
| Ports | 2x RJ-45 ports (Bus A and Bus B for dual redundancy) |
| Power Consumption | Max. 5.0 V DC, ~1.5 A (Supplied via PCIe bus) |
| Operating Temperature | 0°C to +55°C |
| Operating Humidity | 10% to 90% RH (non-condensing) |
Product Advantages
- Redundant Network Support: Equipped with dual RJ45 ports (Bus A / Bus B), enabling automatic, instantaneous failover without data packet loss if one network path fails.
- Deterministic Real-Time Performance: Uses Yokogawa’s dedicated Vnet/IP protocol to prioritize control traffic, ensuring low-latency communication critical for plant safety and process control.
- Hardware Offloading: Handles network packet processing directly on the card, freeing up processing capacity on the host PC or station CPU.
- Hot-Swappable / Easy Maintenance: High mean time between failures (MTBF) and designed for easy installation and diagnostic status LED monitoring.
Important Considerations & Precautions
- Electrostatic Discharge (ESD): The card is highly sensitive to static electricity. Always use an anti-static wrist strap when handling, installing, or removing the module.
- Driver & Software Versions: Ensure that the correct Yokogawa system drivers (matching the installed version of CENTUM VP or CS 3000) are installed prior to inserting the card.
- Cable Selection: Use high-quality Shielded Twisted Pair (STP) Category 5e or higher Ethernet cables to maintain noise immunity in high-EMC industrial environments.
- PCIe Slot Assignment: Verify motherboard slot compatibility and ensure sufficient airflow within the PC chassis to prevent thermal buildup.
Product Applications
The VF701S3 module is deployed across continuous process industries using Yokogawa DCS architectures:
- Oil & Gas Refineries: Linking central operators’ Human Interface Stations (HIS) to Field Control Stations (FCS) across large plant sites.
- Chemical & Petrochemical Processing: Ensuring high-availability control communications for reactor networks and distillation columns.
- Power Generation Facilities: Handling fast, deterministic data transfer between turbine control units and boiler monitoring systems.
- Pharmaceutical Manufacturing: Supporting batch processing control systems requiring reliable data logging and real-time execution.
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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