FOXBORO P0903ZN is a high-performance fieldbus isolator in the Foxboro I/A series, designed specifically for industrial automation control systems to enhance system stability and safety through electrical isolation. The following is a comprehensive overview of its core functions and technical features:

1. Core functions

signal isolation

Isolate the electrical signals between the fieldbus and the main station equipment to prevent signal interference and noise from affecting system stability.

Support independent isolation of analog and digital signals to ensure reliable signal transmission.

Dual bus input

Provide dual bus interfaces, support redundant communication architecture, and enhance system fault tolerance.

High anti-interference performance

Adopting high-performance processors and professional isolation chip design, effectively suppressing electromagnetic interference (EMI) and radio frequency interference (RFI).

2. Technical parameters

Bus standard: RS485, in compliance with international communication protocol requirements.

Installation design: Three card slot structure, compatible with I/A series racks, supports flexible expansion and maintenance.

Diagnostic function: Built in multiple diagnostic modules that can monitor device status in real-time and generate fault reports.

Environmental adaptability: Suitable for industrial environments, with a wide range of working temperatures and strong resistance to vibration and dust.

3. Application scenarios

Chemical and petroleum industries: used for isolating control signals of equipment such as reaction vessels and storage tanks to ensure production safety.

Power system: Isolate the fieldbus of substations or generator sets from control room equipment to prevent signal interference and misoperation.

Automated production line: Ensure real-time and accurate signal transmission in scenarios such as robotic arms and sensor networks.

4. Design advantages

High precision and response speed: High signal processing accuracy, short response time, meeting real-time control requirements.

Compatibility: Supports integration with Foxboro I/A series and other mainstream automation systems such as Siemens and ABB.

Modular expansion: Flexible expansion of system functions can be achieved through multi card slot design.

5. Certification and Standards

Compliant with international safety and performance standards in the field of industrial automation (such as IEC 61131-2), suitable for high safety level scenarios.

FOXBORO P0903ZN是福克斯波罗（Foxboro）I/A系列中的一款高性能现场总线隔离器，专为工业自动化控制系统设计，旨在通过电气隔离提升系统稳定性和安全性。以下是其核心功能与技术特性的综合概述：

1.核心功能

信号隔离

隔离现场总线与主站设备之间的电气信号，防止信号干扰和噪声影响系统稳定性。

支持模拟量与数字量信号的独立隔离，确保信号传输可靠性。

双总线输入

提供双总线接口，支持冗余通信架构，增强系统容错能力。

高抗干扰性能

采用高性能处理器和专业隔离芯片设计，有效抑制电磁干扰（EMI）和射频干扰（RFI）。

2.技术参数

总线标准：RS485，符合国际通信协议要求。

安装设计：三卡槽结构，兼容I/A系列机架，支持灵活扩展与维护。

诊断功能：内置多种诊断模块，可实时监测设备状态并生成故障报告。

环境适应性：适用于工业环境，工作温度范围宽泛，抗震动与粉尘能力强。

3.应用场景

化工与石油行业：用于反应釜、储罐等设备的控制信号隔离，保障生产安全。

电力系统：隔离变电站或发电机组的现场总线与控制室设备，防止信号干扰导致误操作。

自动化生产线：在机械臂、传感器网络等场景中确保信号传输的实时性与准确性。

4.设计优势

高精度与响应速度：信号处理精度高，响应时间短，满足实时控制需求。

兼容性：支持与福克斯波罗I/A系列及其他主流自动化系统（如西门子、ABB）集成。

模块化扩展：可通过多卡槽设计实现系统功能的灵活扩展。

5.认证与标准

符合工业自动化领域的国际安全与性能标准（如IEC 61131-2），适用于高安全等级场景。

Choose Shenzhen Changxin for worry-free after-sales service and high-quality products. We only cooperate with first-tier brand manufacturers in the industry. Our products are imported and comprehensive. We provide thoughtful pre-sales service, communicating multiple times with customers about product models, quality, prices, and delivery schedules to jointly confirm the solutions and address users’ concerns in advance. Business execution is in place, ensuring on-time delivery of ordered products and formulating a comprehensive delivery plan to guarantee the project schedule. We also assist users in handling acceptance procedures.

Our after-sales service is impeccable. For any problems during the warranty period, we only replace, not repair. We never shirk responsibilities or pass the buck when encountering problems. Our service hotline is available 24/7: 18150087953

SOLEMN COMMITMENT

1. For all items, modules, and cards sold by our company, if any quality problems occur during normal use within the warranty period, we will provide free replacements without any excuse or delay.
2. For non-discontinued materials and equipment that are out of the warranty period, we only charge the cost of relevant accessories for quality problems.
3. For discontinued materials and equipment, we provide alternative models and equipment replacement process services.
4. For the materials and equipment purchased by customers, we offer lifetime free system software upgrades and provide relevant technical documents for free.
5. We regularly follow up on the usage of the materials purchased by customers and promptly solve any problems.
6. Our company’s hotline provides 24-hour service, and we will respond to customers’ questions within 1 hour.
7. For any other matters not covered, our company adheres to the attitude of “thoughtful service and full responsibility” and solves problems from the customer’s perspective in a practical way. With a serious and rigorous corporate style, we wholeheartedly serve every customer.

The company mainly imports PLC modules, programmable controllers, servo control systems and DCS spare parts, such as: ABB, AB (Rockwell), GE (General Electric), Bentley, Honeywell, Emerson, Motorola, Invensys, Westinghouse, etc. The company has established close cooperative relations with many world-renowned PLC and DCS product maintenance service providers, and can directly purchase from abroad, providing equipment and spare parts from different countries and manufacturers.

We supply directly from abroad, without middlemen, reducing the cost of use.

There is really no middleman who can make a price difference! !

If you have any defects or need to import PLC, DCS spare parts, please contact our team, we will help you find reliable and high-quality products super quickly, while shortening the delivery time to ensure that your equipment can operate normally in the right environment. On time.

Professionally provide: PLC programmable control system, distributed control system (DCS), safety instrument system (SIS), ESD system, vibration monitoring system, turbine compressor control system (CCS) and other PLC modules, various industrial control systems, system modules, CPU, IO module, DO module, AI module, DI module, network communication module, Ethernet module, motion controller, analog input module, analog output module, switch input module, switch output module, module redundancy, power supply module, relay output unit, relay input unit, processing unit.

Products are widely used in: electricity, petroleum, mine hoisting, ports, heating, gas, water supply, sewage treatment, metallurgy, papermaking, textile, chemical industry, water conservancy and other modern industrial fields!

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