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Brand: Yokogawa
Yokogawa ANR10D-423 PLC Module
Description
Overview:
The Yokogawa ANR10D-423 serves as a mission-critical ESB Bus Node Unit within the Yokogawa CENTUM VP Distributed Control System (DCS). Its primary role is to serve as a high-speed communication bridge between the Field Control Unit (FCU) and various I/O modules distributed across the facility. In the complex industrial landscapes of Oman and the wider Middle East, process stability is non-negotiable. Seven Star LLC supplies the ANR10D-423 as a robust solution for plants requiring seamless I/O expansion and high-fidelity signal processing. By utilizing this node unit, engineers can scale their control architecture while maintaining the rigorous timing requirements of modern industrial automation.
Operational Logic and ESB Bus Redundancy
The operational integrity of this module is rooted in its support for the Extended Serial Backplane (ESB) bus. The unit is specifically engineered to support dual-redundant communication paths, a feature designated by the specific hardware architecture of the ANR series. This redundancy ensures that if one communication line or power supply unit fails, the system automatically switches to the secondary path without any interruption to the control loop. This fail-safe logic is essential for the continuous processing industries, such as oil refining and chemical synthesis, where even a momentary loss of data can lead to significant production losses or safety risks.
Engineering Design and System Integration
Engineering precision is the hallmark of the Yokogawa node architecture. The module is designed to be rack-mounted within a standard industrial cabinet, providing a centralized location for up to eight I/O modules. The internal backplane is shielded against electromagnetic interference (EMI), which is critical in the electrically noisy environments of large-scale manufacturing plants. The hardware configuration is optimized for the latest CENTUM VP environments, ensuring compatibility with modern analog and digital I/O cards. Seven Star LLC provides comprehensive technical guidance to ensure the unit is integrated correctly into existing DCS clusters, including firmware verification and bus termination settings.
Key Features and Technical Performance
The Yokogawa ANR10D-423 offers several technical advantages that set it apart in the PLC module market. It features integrated self-diagnostic routines that constantly monitor the health of the ESB bus and the connected I/O cards. This proactive monitoring allows maintenance teams to identify potential faults before they lead to system downtime. Additionally, the unit supports hot-swapping for redundant power supplies, allowing for maintenance without taking the entire node offline. Its high environmental tolerance ensures stable operation in temperatures ranging from 0°C to 50°C, making it suitable for the varying climate conditions of Oman’s industrial zones.
Industrial Applications across the Middle East
Seven Star LLC supplies this PLC module for a wide array of high-stakes industrial applications across the GCC:
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Petrochemical and Refining: Managing complex distillation and safety-critical control loops with redundant node communication.
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Power Generation Facilities: Integrating remote I/O for turbine and boiler monitoring within a unified control architecture.
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Water Desalination Plants: Providing a reliable communication hub for Reverse Osmosis (RO) and thermal desalination processes in Oman.
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Mining and Mineral Processing: Enabling robust data acquisition in the harsh, dusty environments of mineral extraction sites.
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Pharmaceutical Manufacturing: Ensuring precise and reliable control for automated batching and sterilization processes.
Technical Specifications Table
| Specification | Technical Data |
| Product Type | ESB Bus Node Unit |
| System Compatibility | CENTUM VP, CENTUM CS 3000 |
| Redundancy | Dual-Redundant ESB Bus Support |
| Number of I/O Slots | 8 Slots for I/O Modules |
| Power Supply Option | 220-240 VAC / 24 VDC |
| Communication Interface | Extended Serial Backplane (ESB) |
| Mounting Format | 19-inch Rack Mount |
| Operating Temperature | 0 to 50°C |
| Vibration Resistance | Compliance with ISA S71.04 G3 |
Identifying the Correct ANR10D Node Unit
Yokogawa encodes the configuration of a node unit in the suffix of the model code, so the digits after ANR10D matter as much as the base model. Before ordering a spare, read the complete model and suffix code from the nameplate on the installed unit, and note the style number and revision shown on the same label. Matching all of these avoids receiving a unit with a different power supply option or construction from the one in the cabinet.
- Full model and suffix code, for example ANR10D-423, plus any option codes.
- Style number, because hardware revisions can differ in compatibility with system software releases.
- The CENTUM system release running in the plant.
- The power supply modules and bus interface modules fitted in the node, since these are ordered separately.
Replacement and Commissioning Practice
Treat a node unit replacement as a planned DCS activity, following the plant’s management-of-change procedure. Before starting, confirm with the control room which loops are served by the node and whether both bus paths are healthy, so that the redundant path carries the traffic during the work. Take photographs and label every cable before disconnecting, check the node address settings on the new unit against the old one, and transfer the modules only after the unit is secured in the cabinet. After power-up, confirm in the system status display that the node and all its I/O modules are recognised and that both communication paths return to normal.
Maintenance and Fault Indications
- Bus error on one path: check the bus cable connectors and terminators on that path before suspecting the node unit.
- Power supply alarm: verify the incoming supply, then the power supply module; a redundant supply can usually be changed without stopping the node.
- Intermittent I/O faults: inspect module seating, cabinet temperature and earthing, which cause many intermittent faults in older systems.
Keep the cabinet filters clean and the air conditioning of the rack room in service; dust and heat shorten the life of DCS hardware in desert climates.
Spares Strategy for Gulf Plants
Many CENTUM installations in Oman and the GCC have run for well over a decade, and some hardware is no longer easy to obtain at short notice. Holding at least one node unit per hardware variant on site, together with the matching power supply and bus modules, is a sensible insurance for refineries, power stations and desalination plants. Seven Star LLC can help source matching spares from your nameplate data and will confirm the condition, lead time and documentation for each item before dispatch.
Request a Quote for Yokogawa ANR10D-423 PLC Module
Seven Star LLC is a leading supplier of Yokogawa automation solutions in Oman. For a formal quote or technical support regarding the Yokogawa ANR10D-423 PLC Module, contact our engineering sales team today.
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Datasheets & Documents
- Datasheet Yokogawa ANR10D-423 PLC Module Datasheet Download
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About brand
Yokogawa is the Japanese measurement and industrial automation company behind the DPharp EJA and EJX pressure transmitters, CENTUM distributed control systems and ProSafe-RS safety systems. Tamisuke Yokogawa set it up in 1915 as an electric meter research institute in Shibuya, Tokyo. It began selling electric meters in 1917, was incorporated as Yokogawa Electric Works in 1920, and has been Yokogawa Electric Corporation since 1986. In 1975 it released CENTUM, which it describes as the world's first distributed control system.
Seven Star LLC is an independent supplier in Muscat. We list Yokogawa transmitters, flowmeters, analysers, controllers, recorders and CENTUM and ProSafe spare modules, and supply them to oil and gas, power, water and process plants in Oman and the GCC by model code.
Yokogawa at a glance
| Established | 1915, Shibuya, Tokyo, by Tamisuke Yokogawa with Ichiro Yokogawa and Shin Aoki |
|---|---|
| Milestones | Electric meters from 1917; incorporated in 1920; CENTUM DCS in 1975; renamed Yokogawa Electric Corporation in 1986 |
| Headquarters | Tokyo, Japan |
| Product families | Pressure and temperature transmitters, magnetic, vortex and Coriolis flowmeters, liquid and gas analysers, controllers and recorders, CENTUM VP DCS, ProSafe-RS safety systems and STARDOM controllers |
Yokogawa products we list
| Family | Models | Typical use |
|---|---|---|
| Pressure and DP transmitters | EJA110E, EJA430E, EJA530E, EJX110A, EJX530A, EJX910A multivariable | Pressure, level and DP flow measurement in process plants |
| Temperature transmitters | YTA610, YTA710 | RTD and thermocouple signals converted to 4-20 mA, HART or fieldbus |
| Flowmeters | ADMAG AXG, ADMAG AXW, ROTAMASS TI, VY vortex, VF701 | Water and conductive liquids, mass flow of hydrocarbons, steam and gas |
| Analysers | TDLS8000 laser gas analyser, FLXA402, FLXA21 DO, E7042UD zirconia cell, K9471DS cover | Combustion O2, in-situ gas analysis, pH, conductivity and dissolved oxygen |
| Controllers and recorders | UT35A/UT32A, UT32A-D, UT55A/UT52A, UT75A, UP35A/UP32A, UP55A, YS1700, GX10/GX20, GP10/GP20, GM10, µR20000 | Single-loop control, furnace programs and data recording |
| Control and safety systems | CP451-10 processor, ADV161, ADV551, node interface unit, ProSafe-RS, ProSafe-RS Lite, ProSafe-SLS, FCN-500 | Spares and expansions for CENTUM DCS, safety systems and STARDOM |
| Battery packs | S9129FA, S9185FA, S9548FA | Memory backup batteries for DCS and controller modules |
The EJA and EJX transmitters use Yokogawa's DPharp sensor: two silicon resonators whose vibration frequency changes with pressure, so the output is a digital frequency rather than an analogue strain signal. The model code describes the instrument completely. In EJA110E, "110" is a differential pressure transmitter, and the letters after the dash set the span, wetted materials, process connection, electrical output and approvals. When you replace a transmitter, sending the full code from the nameplate avoids a mismatch in range or materials.
Where Yokogawa products are used
In Oman and the GCC, Yokogawa transmitters, analysers and control systems are found in oil and gas production, gas processing and LNG, refineries and petrochemical plants, power and desalination stations, and water treatment. Many plants still run CENTUM CS 3000 and CENTUM VP systems that need spare I/O modules and batteries.
Ordering Yokogawa products: what we need
Send the full model and suffix code from the nameplate (for example EJA110E-JMS5J-912NN/KF22) and the style code. For DCS modules, add the module type and system version. For analysers, send the sensor type, measuring range and process conditions.
Facts checked against Yokogawa's corporate history, October 2026.
Browse Yokogawa products by category: PLC & I/O Cards, Flowmeters, Pressure Instrumentation, Automation Accessories, Temperature Instrumentation.
FAQ
Questions about the Yokogawa ANR10D-423 PLC Module
Answers from our engineering team on installation, compatibility and integration.
01What is the primary function of the Yokogawa ANR10D-423 in a CENTUM VP system?
The Yokogawa ANR10D-423 functions as a node unit that connects I/O modules to the Field Control Unit (FCU) via a high-speed ESB bus, allowing for system expansion and distributed control.
02Does this module support dual-redundant power supplies?
Yes, the unit is designed to house two power supply units to ensure that the node remains operational even if one power source fails.
03How many I/O modules can be installed in one node?
The unit provides eight slots specifically designed to house various Yokogawa analog and digital I/O modules for versatile field signal processing.
04Is the module compatible with older DCS versions?
While optimized for CENTUM VP, it is often backward compatible with CS 3000 systems. Seven Star LLC recommends a site-specific compatibility check before replacement.
05What makes this node unit suitable for the Middle Eastern climate?
Its robust design and high-temperature tolerance (up to 50°C) ensure it remains stable in the demanding industrial environments found in Oman and the GCC.
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