Product Introduction
CP345 S1 is a crucial central processor/processing module (Processor Module) in the Yokogawa DCS system. The central processor module (Central / Processor Module)appliese to the CENTUM CS 3000 control system and also compatible with certain CENTUM VP system architectures, used for:
✔ Real-time data acquisition and processing
✔ Control logic execution (including PID and other control algorithms)
✔ System communication coordination and protocol processing
✔ High-speed data interaction with I/O, fieldbus, HMI/SCADA
Technical Specifications
|
Brand |
YOKOGAWA |
|
Model |
CP345 |
|
Part Number |
CP345 S1 |
|
Description |
Processor Module |
|
Origin |
Singapore /Japan |
|
Dimension |
23*18*10cm |
|
Weight |
1.2kg |
Product Details
As the core processing unit of the control system, the CP345 S1 usually has multiple communication interfaces, including:
✔ Ethernet: Used for communication with engineering stations and upper-level monitoring systems (such as SCADA)
✔ Serial interface: Supports common on-site industrial communication formats such as RS-232 and RS-485
✔ Fieldbus protocol: Compatible with fieldbus protocols such as Modbus and Profibus (based on vendor extensions)
Product Parameters:
Input voltage range: 0-10V.
Output current range: 4-20mA.
Working temperature: -20°C to 60°C.
Protection level: IP67.
Supported communication interface: Modbus, Profibus, etc.
Functional Characteristics:
Accuracy: ±0.1%.
Stability: ±0.2% URL/10 years.
Response time: 90 milliseconds.
Certification: TUV and Exida SIL2/SIL3 certified.
Maximum operating pressure: 3,600 psi.
Communication protocols: HART 5/7, HART (1~5V DC) low power, FF fieldbus, PROFIBUS PA, and BRAIN communication protocols are available.
Diagnostic function: The transmitter has 40 self-diagnostic functions, including Back-Check patented technology and DPharp active sensor technology, which can reverse calculation in real time to confirm and detect the correctness of calculations, as well as detect sensor failures inrealt time when the sensor signal is interrupted.
Introduction to Distributed Control Architecture
Contact: info@htechplc.com
Yokogawa CENTUM System
The Yokogawa CENTUM system is a distributed control system, and its core design concept is as follows:
▶ The control functions are distributed across multiple processing units and I/O modules;
▶ Each node is responsible for a specific task and can achieve collaborative control through high-speed communication.
▶ The main control unit forms a real-time closed-loop control with the on-site I/O, sensors, and actuators.
CP345 S1, as a CPU or processor module, is located at the core of the control system. Its specific functions include:
①Real-time data reading and preprocessing
Collect analog and digital signals from various on-site I/O modules, and then convert them into a format that can be processed by the system.
② Execution of control logic
Based on the control strategies written by the user (such as PID, logical judgment, etc.), analyze the on-site parameters and generate control instructions.
③ Output control instructions
The control results are sent to the actuators (such as valves, pumps, frequency converters, etc.) through the output module or the fieldbus.
④ System Monitoring and Communication Coordination
Continuous data exchange is maintained with the operator control station (HMI/SCADA), historical database, and on-site communication module.
Therefore, CP345 S1 essentially serves as the "brain" module that constitutes the core of the execution control logic throughout the DCS architecture.
Integration with the CENTUM system
In Yokogawa's CENTUM CS 3000 or CENTUM VP distributed control system, the CP345 S1 works in conjunction with the following components:
▶ I/O Module (Input/Output Modules)
Responsible for collecting and executing signals from on-site sensors and actuators, and loading them into the processor logic.
▶ Engineering Workstation
Used for system configuration, program writing, debugging, and online monitoring.
▶ Communication Network
Ensures real-time data exchange among all components, including the fieldbus and the Ethernet layer.
Selection and Purchase Suggestions
When choosing CP345 S1, the following recommendations are provided:
✔ Verify that the system version (CENTUM CS 3000 or VP) is compatible with it
✔ Confirm the module status and its conformity to the original manufacturer's certification
✔ Select appropriate support and after-sales services
