Product Details

The Yokogawa VF702 (Style S1) is a high-performance, dual-port PCI-Express (PCIe) x1 Control Bus Interface Card engineered for the CENTUM VP Distributed Control System (DCS) and ProSafe-RS Safety Instrumented System (SIS). This card establishes the critical Vnet/IP link between Human Interface Stations (HIS) or Engineering Stations (ENG) and the control network. We supply this product as 100% brand new and original in factory packing, ensuring mission-critical stability for your plant's communication backbone.

Product Overview

The VF702 facilitates high-speed, redundant 1 Gbps data transmission, serving as the hardware gateway for the Vnet/IP control bus. By utilizing the modern PCIe x1 architecture, it offers significantly faster data throughput and lower latency compared to legacy PCI interface cards. This module manages real-time process data, alarms, and control commands, ensuring seamless synchronization between operator stations and field control units in large-scale industrial environments.

Part Number Breakdown

Yokogawa VF702 series hardware adheres to strict revision and style standards:

• VF702: Base model for the Vnet/IP PCIe Interface Card.

• Style S1: Designates the first-generation PCIe hardware revision, optimized for dual-port redundancy and modern workstation compatibility.

Technical Specifications

Engineering Advantages

• Optimized PCIe Throughput: The VF702 leverages the PCI-Express x1 bus to provide superior data bandwidth over older PCI cards. This architecture minimizes communication bottlenecks during major plant upsets when alarm traffic and data polling peak.

• Native Redundancy Management: The dual-port design allows for direct connection to redundant Vnet/IP networks. The card automatically manages path switching without host CPU intervention, guaranteeing continuous visibility of the process.

• Low-Latency Synchronization: Specialized onboard processing ensures that control signals and safety interlocks transmit with minimal delay. This determinism is vital for synchronizing complex control loops across multiple stations.

• Industrial-Grade EMI Shielding: Designed for the electrical noise of industrial control rooms, the VF702 features robust electromagnetic interference (EMI) resistance. It maintains signal integrity even when installed in workstations near high-power switchgear or VFDs.

• Seamless Safety Integration: Because the VF702 is compatible with both CENTUM VP and ProSafe-RS, it enables a unified communication environment. This simplifies spare parts management and training for maintenance teams overseeing both control and safety systems.

FAQs

What is the main difference between the VF701 and the VF702?

The primary difference lies in the bus interface. The VF701 uses a standard PCI slot, while the VF702 utilizes the faster and more modern PCI-Express (PCIe) x1 interface, making it compatible with current-generation industrial workstations.

Does this card require an external power source?

No. The VF702 draws all necessary operational power directly from the PCIe x1 slot on the station's motherboard. This simplifies internal cabinet wiring and reduces potential failure points.

How do I configure the redundancy on the VF702?

Redundancy is handled through the Yokogawa Vnet/IP driver settings within the CENTUM VP or ProSafe-RS engineering environment. Once you connect cables to both RJ-45 ports, the software manages the primary and secondary communication paths.

Can the VF702 operate at 100 Mbps if my switch does not support Gigabit?

Yes. The card supports auto-negotiation and can operate at 100 Mbps (100BASE-TX) full duplex, though 1000 Mbps (1Gbps) is recommended to take full advantage of the Vnet/IP bus performance.