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Product Introduction
The Yokogawa ALF111-S00 Fieldbus Communication Module is a specialized communication interface designed to integrate field devices with control systems via FOUNDATION™ Fieldbus technology. As part of Yokogawa’s high-reliability control system family, this module plays a critical role in enabling digital communication between field instruments and control systems such as CENTUM VP or STARDOM. The ALF111-S00 offers advanced diagnostics, efficient communication, and seamless integration with digital process control systems.
Built for industrial environments, the ALF111-S00 delivers robust performance, ensuring accurate and consistent data transmission across the field network. It is engineered for long-term operation under demanding conditions, offering both operational efficiency and reduced lifecycle costs.
Specifications
| Parameter | Specification |
|---|---|
| Model Number | ALF111-S00 |
| Communication Protocol | FOUNDATION™ Fieldbus H1 |
| Host System Compatibility | CENTUM VP, STARDOM, and other Yokogawa control systems |
| Interface | 2-wire, bus-powered digital communication |
| Number of Segments | 2 Fieldbus segments |
| Transmission Speed | 31.25 kbps |
| Power Supply | 24V DC ±10% |
| Current Consumption | Approx. 100 mA |
| Dimensions (WxHxD) | 130 x 127.5 x 32.8 mm |
| Weight | 0.4 kg |
| Mounting Method | DIN rail mounting |
| Ambient Temperature | -20°C to +60°C |
| Relative Humidity | 5% to 95% RH (non-condensing) |
| Certifications | CE, RoHS, ATEX (optional), ISA-S71.04 compliant |
| Enclosure Protection | IP20 |
Applications
The ALF111-S00 module is suitable for a wide range of applications in process industries. Some of its most common uses include:
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Chemical Plants: For monitoring and controlling processes using digital field instruments like transmitters and control valves.
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Oil & Gas Facilities: Facilitates secure and reliable data transmission between control rooms and field devices.
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Power Generation: Ensures stable communication in control systems for turbines, boilers, and other critical infrastructure.
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Pharmaceutical Manufacturing: Enhances data integrity in regulated production environments through precise communication.
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Water Treatment Plants: Used for continuous monitoring and control of pumps, valves, and sensors in distributed networks.
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Food & Beverage Production: Ensures product quality by maintaining process consistency via real-time data from field devices.
Advantages
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High Integration Capability: Seamlessly integrates with Yokogawa’s DCS and SCADA systems, improving system-wide performance and manageability.
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Foundation Fieldbus Technology: Offers digital two-way communication that supports advanced diagnostics and better process control.
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Reliable Communication: Provides noise immunity and consistent data flow, minimizing communication errors and downtime.
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Dual Segment Support: Operates two independent fieldbus segments, reducing the need for additional hardware and simplifying network architecture.
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Compact & Robust Design: Small form factor with industrial-grade durability ensures ease of installation and long service life.
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Advanced Diagnostics: Supports device-level diagnostics and alerts for predictive maintenance and operational efficiency.
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Energy Efficient: Low power consumption makes it suitable for applications where energy conservation is critical.
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Cost-Effective: Reduces cabling and installation costs compared to traditional analog communication setups.
FAQ (Frequently Asked Questions)
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What is the main function of the ALF111-S00?
It acts as a gateway between field instruments and control systems using FOUNDATION™ Fieldbus communication. -
Is the ALF111-S00 compatible with Yokogawa CENTUM VP?
Yes, it is fully compatible with CENTUM VP, STARDOM, and other Yokogawa control platforms. -
What is the transmission speed of the ALF111-S00?
It communicates at a standard speed of 31.25 kbps as per the FOUNDATION™ Fieldbus specification. -
Can the ALF111-S00 handle two segments simultaneously?
Yes, it supports two independent Fieldbus H1 segments in a single module. -
What type of devices can be connected to the ALF111-S00?
It can be connected to digital field devices such as pressure transmitters, temperature sensors, and control valves. -
Is it certified for use in hazardous areas?
Yes, certain models offer ATEX certification for use in explosive environments. -
What is the typical power requirement for this module?
It typically requires a 24V DC power supply with approximately 100 mA current draw. -
What diagnostic capabilities does the module support?
It offers device diagnostics, segment health checks, and supports predictive maintenance features. -
What are the environmental limits of the ALF111-S00?
It can operate in environments ranging from -20°C to +60°C, and 5%–95% RH non-condensing humidity. -
How is the module mounted?
The ALF111-S00 is designed for DIN rail mounting within control panels.
Recommended Related or Same-Series Models
| Model | Description | Key Features |
|---|---|---|
| ALF111-S10 | Enhanced version with additional diagnostics | Extended diagnostics and segment management |
| ALF112-S00 | High-speed version for advanced process systems | Supports higher network loads |
| ALF111-S01 | Version with isolated fieldbus ports | Improved noise immunity and safety |
| ALF113-S00 | Multi-segment support module | Supports up to 4 segments |
| ALF111-D00 | DIN version for compact control panels | Space-saving design, same functionality |
| ALF111-R00 | Ruggedized model for outdoor installation | Extended temperature and vibration resistance |
Popular Yokogawa Models
| Model | Description | Application |
|---|---|---|
| Yokogawa FCN-100 | Compact field control node for STARDOM system | Small-scale automation systems |
| Yokogawa CENTUM VP | Integrated production control system | Advanced process control in all industries |
| Yokogawa FA-M3 | Programmable logic controller | High-speed machine control applications |
| Yokogawa DX2020 | Paperless recorder with multi-channel data logging | Data acquisition and compliance monitoring |
| Yokogawa YHC5150X | Handheld communicator for HART/Fieldbus devices | On-site configuration and maintenance |
| Yokogawa EJX110A | Differential pressure transmitter | Precise pressure measurement in processes |
