VI701 S1 Yokogawa | CENTUM CS 3000 Vnet/IP Interface Unit

Product Overview

The VI701 S1 (Model: VI701/S1) is a high-performance Vnet/IP interface card engineered specifically for the Yokogawa CENTUM VP and CENTUM CS 3000 Distributed Control Systems (DCS). This communication module serves as the primary gateway for high-speed, deterministic data exchange across the Vnet/IP control network. It facilitates seamless connectivity between Field Control Stations (FCS), Human Interface Stations (HIS), and other critical system nodes.

The VI701 S1 (Part Number: VI701/S1) is designed to support the 1 Gbps real-time control network, ensuring that process data, alarms, and control commands are transmitted with the high availability required for mission-critical industrial plants. Its architecture is optimized for dual-redundancy, providing a fault-tolerant communication path that prevents single points of failure in complex process environments like petrochemical refineries and power generation facilities.

Detailed Technical Specifications

The VI701/S1 is a hardware-layer interface unit that maintains the synchronization and integrity of the Yokogawa control domain.

• Manufacturer: Yokogawa Electric Corporation

• Model Number: VI701/S1

• Product Type: Vnet/IP Interface Module / Communication Card

• System Compatibility: CENTUM VP, CENTUM CS 3000

• Network Protocol: Vnet/IP (Yokogawa proprietary real-time Ethernet)

• Communication Speed: 1 Gbps (Gigabit Ethernet standard)

• Interface Ports: Supports connections to Vnet/IP switches (Layer 2/3)

• Transmission Media: Compatible with Category 5e/6 UTP or Optical Fiber (via external media converters)

• Redundancy Configuration: Supports dual-redundant bus (Bus 1 and Bus 2)

• Maximum Node Distance: 100 meters (UTP cable); extends with optical solutions

• Installation: Mounted within the PCI/PCIe slot of a controller or HIS station backplane

• Operating Temperature: 0 °C to +55 °C

• Storage Temperature: –20 °C to +70 °C

• Diagnostics: Integrated LED indicators for Link/Activity, Status, and Error detection

• Compliance: Designed for industrial EMC (Electromagnetic Compatibility) standards

Primary Application Scenarios

The VI701 S1 (Part Number: VI701/S1) is essential for the following system configurations:

• Control Station Integration: Bridging the Field Control Station (FCS) to the plant-wide control network.

• Redundant Network Upgrades: Enhancing existing CENTUM CS 3000 systems to modern Vnet/IP standards.

• Large-Scale Data Acquisition: Managing high-bandwidth data traffic between remote I/O nodes and central processing units.

• Process Safety Management: Providing the deterministic communication backbone for safety-certified ProSafe-RS integrated loops.