Technical Overview
The Yokogawa VI451-10 S2 operates as a versatile communication module for the CENTUM VP and ProSafe-RS distributed control systems. This module supports multiple third-party protocols including Modbus RTU, HART, and PROFIBUS DP, enabling legacy device integration. Its dual-port RS-485 interfaces connect up to 32 field devices in a multidrop network. The VI451-10 S2 also includes a dedicated service port for local diagnostics and firmware upgrades.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Yokogawa Electric Corporation |
| Product Type | Communication Module / Protocol Converter |
| System Compatibility | CENTUM VP, ProSafe-RS |
| Supported Protocols | Modbus RTU, HART, PROFIBUS DP, Modbus TCP |
| Communication Ports | 2 × RS-485, 1 × Ethernet |
| Service Port | 1 × RS-232 (local diagnostics) |
| Maximum Devices per Network | 32 (RS-485 multidrop) |
| Data Transfer Rate | Up to 1 Mbps (RS-485) / 100 Mbps (Ethernet) |
| Redundancy | Module redundancy supported |
| Diagnostic Indicators | RUN, COM, ERR, CH1, CH2 |
| Power Supply | 24 VDC |
| Current Draw | 350 mA |
| Dimensions (H x W x D) | 130 x 50 x 110 mm |
| Weight | 0.45 kg |
| Operating Temperature | 0°C to 55°C |
| Storage Temperature | -25°C to 70°C |
| Protection Class | IP20 |
| Certifications | CE, CSA, IEC 61131 |
Protocol Support and Device Integration
The Yokogawa VI451-10 S2 enables seamless integration of third-party intelligent devices such as analyzers and variable-frequency drives. Its Modbus RTU and PROFIBUS DP capabilities connect legacy equipment to modern DCS infrastructures without costly replacements. Consequently, this module reduces engineering effort and simplifies migration projects.
Network Architecture and Performance
Two RS-485 ports support multidrop networks with up to 32 devices per segment, expanding communication capacity across plant areas. Additionally, its Ethernet interface enables high-speed connection to plant control networks or SCADA systems. The VI451-10 S2 delivers deterministic data exchange, supporting both scheduled and exception-based communication models.
Diagnostics and Redundancy
Front-panel LEDs provide immediate status feedback for port activity, communication errors, and module health. The module supports system-level redundancy for critical applications, ensuring continuous data exchange even after component failure. Moreover, its service port grants local access for troubleshooting and firmware updates without network disconnection.
Details
| Weight | 0.45 kg |
|---|---|
| Dimensions | 130 × 50 × 110 mm |
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