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Product Overview

The Yokogawa CP345-S1 functions as the high-performance computational core for CENTUM VP and CENTUM CS 3000 Distributed Control Systems (DCS). This Processor Module resides within the Field Control Station (FCS), where it executes complex regulatory control strategies, manages real-time process variables, and coordinates high-speed data flow between I/O modules and the broader plant network. The "S1" (Style 1) designation identifies a specific, optimized hardware revision engineered for maximum uptime in mission-critical automation environments, such as large-scale oil refineries and power generation plants.

Part Number Breakdown: CP345-S1

Yokogawa nomenclature defines the hardware generation and functional capabilities of the processor:

  • CP345: Identifies the high-speed real-time processor architecture for the CENTUM series.

  • -S1 (Style 1): Indicates the specific hardware revision optimized for improved thermal management and high-volume data handling.

  • System Match: This module integrates natively with Vnet/IP, Ethernet, and Modbus/TCP communication infrastructures.

Technical Specifications

The CP345-S1 delivers deterministic processing power within a ruggedized industrial chassis.

Feature Specification
Model Number CP345-S1 (Style 1)
Product Type Processor Module (Control Processor)
System Compatibility CENTUM CS 3000, CENTUM VP
Network Interfaces Vnet/IP, Ethernet, Modbus/TCP
Redundancy Supports Dual-Redundant (Fault-Tolerant) Setup
Operating Temp –20 °C to +70 °C (–4 °F to +158 °F)
Storage Temp –40 °C to +85 °C
Dimensions (HxWxD) 26.2 cm x 5.8 cm x 24.9 cm
Net Weight 0.6 kg (1 lbs 6.4 oz)
Country of Origin Japan

Engineering Advantages

  • Fault-Tolerant Reliability: The CP345-S1 natively supports dual-redundant configurations. In this architecture, two modules operate in parallel with synchronized data. If the primary processor encounters a hardware failure, the backup module assumes control instantly, ensuring zero interruption to the industrial process.

  • Ultra-Low Latency Execution: Large onboard memory and high-speed CPU architecture allow the module to execute complex sequence algorithms and PID loops without scan-cycle jitter. This precision is vital for maintaining stability in highly volatile chemical reactions.

  • Industrial Hardening: Yokogawa specifically treats the internal circuitry to resist electromagnetic interference (EMI) and high-frequency vibrations. This allows the CP345-S1 to operate reliably in cabinets located near heavy machinery and motor control centers.

  • Seamless Network Integration: The module facilitates high-speed communication via the Vnet/IP control network. It also serves as a multi-protocol interface, managing data exchange between field instruments and the Human Interface Station (HIS) using standard Modbus/TCP and Ethernet protocols.

FAQs

Q: Is the Yokogawa CP345-S1 supplied as 100% Brand New?

A: Yes. We supply only 100% Brand New and Original Yokogawa hardware in factory-sealed packaging. Each CP345-S1 module includes a 12-month factory warranty to guarantee performance in your DCS infrastructure.

Q: What does the "S1" designation represent?

A: "S1" stands for Style 1. This hardware revision represents a specific build standard from Yokogawa that ensures compatibility with specific backplane revisions and provides optimized reliability for CENTUM VP/CS 3000 systems.

Q: Can I install this module in a running system?

A: In a redundant Field Control Station setup, the system supports online replacement. You can insert the new CP345-S1 while the partner module maintains process control, allowing for seamless synchronization and hardware updates without a plant shutdown.

Q: Does this module support communication with third-party PLCs?

A: Yes. Beyond Yokogawa’s proprietary Vnet/IP, the CP345-S1 supports Modbus/TCP, allowing the DCS to exchange data directly with auxiliary PLCs, power meters, and smart motor drives.

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