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Product Overview
The Yokogawa ANT421-50 Fiber Optic Bus Repeater Master Module is a high-performance communication device designed for extending and managing fiber optic bus networks within Yokogawa’s distributed control systems (DCS). It serves as a master repeater module, amplifying and regenerating optical signals to ensure reliable data transmission over extended distances.
Key Features
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Functions as a master repeater for fiber optic bus networks
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Extends communication distance in Yokogawa DCS systems
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High-speed data transmission with excellent signal regeneration
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Immune to electromagnetic and radio frequency interference
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Compatible with Yokogawa CENTUM and other control systems
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Dual-channel fiber optic ports for redundant configurations
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LED indicators for status and link monitoring
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Compact and modular design for easy integration
Technical Specifications
| Item | Specification |
|---|---|
| Manufacturer | Yokogawa |
| Part Number | ANT421-50 |
| Product Type | Fiber Optic Bus Repeater Master Module |
| Function | Optical signal amplification and distribution in DCS networks |
| Transmission Medium | Multimode fiber optic cable |
| Transmission Speed | Up to 1 Mbps |
| Transmission Distance | Up to 10 km (with repeaters and suitable fiber) |
| Communication Type | Duplex optical link |
| Optical Connector Type | ST-type or equivalent |
| Power Supply | 24 V DC nominal |
| Current Consumption | Approx. 250 mA |
| Operating Temperature | 0 °C to +55 °C |
| Storage Temperature | –20 °C to +70 °C |
| Humidity | 5–95% RH (non-condensing) |
| Mounting Type | Rack-mounted (Yokogawa subsystem rack) |
| Dimensions | 142.5 x 130 x 32.8 mm |
| Weight | 0.3 kg |
| Compatibility | Yokogawa CENTUM VP and related DCS systems |
Industry Applications
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Large distributed control systems (DCS)
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Oil and gas processing facilities
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Petrochemical and refining industries
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Power generation plants
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Water treatment and desalination plants
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Manufacturing automation systems
Frequently Asked Questions (FAQ)
Q1: What is the primary function of the ANT421-50 module?
It acts as a fiber optic bus repeater master, amplifying and regenerating optical signals in DCS networks.
Q2: What communication medium does it use?
It uses multimode fiber optic cables for high-speed data transmission.
Q3: What is the maximum transmission distance supported?
It supports up to 10 km depending on fiber quality and configuration.
Q4: Is it compatible with Yokogawa CENTUM systems?
Yes, it is fully compatible with Yokogawa CENTUM VP and related DCS systems.
Q5: Does it support redundant communication links?
Yes, it features dual optical ports that can be configured for redundancy.
Q6: How is it powered?
The module operates on a 24 V DC nominal power supply.
Q7: What environmental conditions can it operate under?
It operates between 0 °C and +55 °C, with humidity up to 95% RH non-condensing.
Q8: Can it be used to expand existing fiber networks?
Yes, it is ideal for extending and stabilizing communication links across long distances.
Related Yokogawa Modules
| Model | Description |
|---|---|
| ANT411-50 | Fiber Optic Bus Master Module |
| ANT412-5F | Fiber Optic Bus Interface Module |
| ANT512-5F | Fiber Optic Bus Slave Module |
| ANT421-50 | Fiber Optic Bus Repeater Master Module |
| ANT513-5F | Fiber Optic Communication Module |
| ANT531-5F | Dual-Channel Fiber Optic Interface Module |
Popular Yokogawa Modules
| Model | Description |
|---|---|
| PW442-10-S2 | Power Supply Module |
| SDV144 | Digital Input Module |
| NFAI835 | Analog Input/Output Module |
| ANT512-5F | Fiber Optic Bus Slave Module |
| ANT421-50 | Fiber Optic Bus Repeater Master Module |
| AAI143-S00 | Analog Input Module |
