Yokogawa ANR11D Node Interface Unit with ATEX Rating for CENTUM VP DCS Systems

25 Jul, 2026
Posted by: Mehul Vadher

Condition: Used

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Process control systems operating in hazardous environments demand hardware that not only delivers precise automation performance but also meets stringent safety certifications for explosive atmospheres. The Yokogawa ANR11D Node Interface Unit is an advanced DCS node from the industry-leading Yokogawa CENTUM platform, featuring the ANR11D enhanced design with comprehensive I/O modules and ATEX/IECEx hazardous area certification. This unit represents the evolution of Yokogawa's distributed control technology, incorporating improved safety ratings and power delivery capabilities that make it suitable for the most challenging process control environments worldwide.

At Aeliya Marine Tech, we recognize that DCS components for hazardous area installations must meet both performance and safety compliance requirements. The ANR11D we offer is a quality Used unit that has been carefully sourced and inspected to verify operational readiness. Its impressive feature set includes the PW482-10 S2 power module with dual DC outputs, Class I Division 2 hazardous area rating with T4 temperature classification, and ATEX certification for European installations. Every unit ships with our 30-day warranty and free delivery, providing the confidence you need to deploy this critical DCS infrastructure component in your process control system.

Key Features & Specifications

The Yokogawa ANR11D Node Interface Unit builds upon the proven ANR10 foundation with enhanced safety certifications and improved power delivery that address the evolving requirements of modern process plants, particularly those operating in hazardous environments or under European regulatory frameworks.

CENTUM VP/CS 3000 Compatible: Native node for Yokogawa's latest CENTUM DCS platforms with enhanced feature support
ATEX/IECEx Certified: II 3 G Ex Nc [Nl] IIC T4 X rating for installation in European hazardous area zones
T4 Temperature Classification: Enhanced T4 rating (135°C maximum surface temperature) for safe operation in gas-vapor atmospheres
Dual Output Power Supply: PW482-10 S2 module delivers 5.1VDC at 7.8A and 24VDC at 1.7A for comprehensive I/O powering
CL.I Div.2 Rated: Class I, Division 2, Groups A,B,C,D rating for North American hazardous locations
Complete I/O Module Set: Pre-loaded with analog input, digital input/output, and communication modules
220-240 VAC Input: Standard industrial voltage with 260 VA power rating for full-load operation

Technical Specifications

Specification	Details
Product Name	Yokogawa ANR11D Node Interface Unit with I/O Modules
Manufacturer	Yokogawa Electric Corporation
Model	ANR11D
DCS Platform	CENTUM VP / CS 3000
Style	S1
Serial Number	C2MH12009C
Supply Voltage	220-240 VAC, 50/60Hz
Power Rating	260 VA
Suffix	-420 / NDFL
North America Hazardous Rating	CL.I, Div.2, Groups A,B,C,D, T4
ATEX Certification	II 3 G Ex Nc [Nl] IIC T4 X
Power Module Model	PW482-10 S2
Power Module Suffix	-10
Power Module Style	S2
Power Module Input	220-240 VAC, 50/60Hz, 1.3A
Power Module Output 1	5.1 VDC, 7.8A
Power Module Output 2	24 VDC, 1.7A
Power Module Serial	C3MH13103P
Analog Input Module	AAB841-S00 S2
Temperature Module	ATM4A-00 S1
Digital Input Module	ADV161-P00 S2
Digital Output Module	ADV561-P00 S2
Condition	Used

Applications & Use Cases

The Yokogawa ANR11D Node Interface Unit with its enhanced safety certifications and robust power delivery serves process industries where both performance and compliance are non-negotiable. Its unique combination of North American and European hazardous area certifications makes it particularly valuable for multinational operators and projects requiring dual-standard compliance.

Oil & Gas Production with ATEX Requirements

European oil and gas installations, including North Sea platforms, refineries, and onshore terminals, must comply with the ATEX Directive 2014/34/EU for equipment used in potentially explosive atmospheres. The ANR11D's II 3 G Ex Nc [Nl] IIC T4 X certification provides this compliance, allowing installation in Zone 2 hazardous areas without additional protective measures. The IIC gas group rating covers the most demanding gas classifications including hydrogen and acetylene, providing the broadest application flexibility of any equipment protection level.

Chemical & Petrochemical Processing

Chemical plants handling flammable solvents, monomers, and intermediates require control system hardware that can operate safely in areas where explosive vapors may occasionally be present. The ANR11D's T4 temperature classification ensures that even under fault conditions, the unit's surface temperature will not exceed 135°C - well below the auto-ignition temperature of most common chemical process vapors. This safety margin provides peace of mind for process safety managers and regulatory inspectors alike.

LNG & Cryogenic Facilities

Liquefied natural gas production, storage, and regasification facilities operate with methane-rich atmospheres that demand the highest levels of equipment safety certification. The ANR11D's IIC gas group rating specifically covers methane under the ATEX classification system, and its robust power module design maintains stable operation in the cryogenic temperature environments typical of LNG plant control rooms. The dual-output power supply (5.1VDC and 24VDC) supports the diverse voltage requirements of LNG facility instrumentation.

Offshore Platform Process Control

Offshore platforms combine multiple hazardous area challenges: hydrocarbon process streams, confined equipment spaces, and limited maintenance access. The ANR11D's compact node design maximizes I/O density per square meter of panel space, while its comprehensive safety certifications eliminate the need for additional explosion-proof enclosures that consume valuable real estate. The T4 temperature rating accounts for the elevated ambient temperatures common in offshore module buildings and equipment rooms.

International Projects Requiring Dual Certification

Engineering, Procurement, and Construction (EPC) contractors executing international projects often face the challenge of sourcing equipment that satisfies both North American and European safety standards. The ANR11D's dual certification - CL.I Div.2 Groups A,B,C,D T4 and ATEX II 3 G Ex Nc [Nl] IIC T4 X - eliminates the need to procure different DCS hardware for different project phases or geographic locations, simplifying procurement, reducing spare parts inventory, and accelerating project schedules.

⚠ Last Unit Available

This Yokogawa ANR11D with ATEX certification and complete I/O module set is the last available unit. Order now for your hazardous area DCS project with free shipping and 30-day warranty from Aeliya Marine Tech.

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Why Choose the Yokogawa ANR11D

The ANR11D represents the evolution of Yokogawa's node interface technology, incorporating lessons learned from decades of field deployment and anticipating the safety certification requirements of modern process installations. Several compelling advantages distinguish this unit from earlier generations and competing products.

Dual Certification for Global Deployment

The simultaneous CL.I Div.2 and ATEX certification of the ANR11D is a significant procurement advantage for multinational operators and project-driven organizations. Rather than maintaining separate hardware inventories for North American and European installations, companies can standardize on the ANR11D across their global fleet, simplifying spare parts management, technician training, and engineering documentation.

Enhanced Power Delivery Architecture

The PW482-10 S2 power module's dual-output design (5.1VDC at 7.8A and 24VDC at 1.7A) provides comprehensive power distribution for both logic-level and field-powered I/O modules from a single power supply. This integrated approach reduces panel wiring complexity, eliminates the need for separate power supplies, and improves overall system reliability by minimizing the number of components that could fail. The 1.3A input current draw is modest for the power delivered, indicating efficient power conversion design.

T4 Temperature Classification Advantage

The T4 temperature classification (maximum surface temperature 135°C) provides a wider safety margin than the unclassified temperature ratings of earlier node designs. This enhanced classification supports installation in process areas with lower auto-ignition temperature gases and provides additional safety margin in high-ambient-temperature environments such as desert climates or congested equipment rooms.

Aeliya Marine Tech Value Proposition

Aeliya Marine Tech combines technical expertise in DCS systems with a global supplier network that locates quality used components at competitive pricing. Our inspection process verifies that each ANR11D is functionally ready for installation, and our 30-day warranty provides the assurance you need to specify this component for critical applications. For hazardous area installations, we can provide guidance on certification interpretation and installation requirements to help your project achieve compliance efficiently.

Compatibility & Integration

Integrating the ANR11D into a CENTUM DCS requires careful attention to software version compatibility, network configuration, and hazardous area installation requirements. The following guidance helps ensure successful deployment.

CENTUM VP Software Compatibility

The ANR11D with suffix -420/NDFL and Style S1 requires specific versions of the CENTUM VP or CENTUM CS 3000 software. The NDFL suffix indicates enhanced firmware that may require corresponding software support. Verify your engineering station software revision against Yokogawa's hardware compatibility documentation before installation. Aeliya Marine Tech can provide the suffix and style information needed for this verification.

Hazardous Area Installation Requirements

For ATEX installations, the ANR11D must be installed in accordance with the conditions of certification specified in the unit's EU Type Examination Certificate. This typically includes requirements for cable gland selection, earthing arrangements, and environmental protection. For NEC/CEC installations, the CL.I Div.2 rating permits installation using general-purpose wiring methods when installed in accordance with Article 501 of the National Electrical Code.

I/O Module Configuration

The included I/O modules - AAB841-S00 S2 (analog input), ATM4A-00 S1 (temperature), ADV161-P00 S2 (digital input), and ADV561-P00 S2 (digital output) - must be configured in the CENTUM engineering station with appropriate channel assignments and signal conditioning. The PW482-10 S2 power module's dual outputs automatically power the appropriate I/O module types without additional configuration. Refer to Yokogawa's I/O Configuration Manual for detailed procedures.

Maintenance & Support

Maintaining the ANR11D in hazardous area installations requires adherence to both standard DCS maintenance practices and hazardous area equipment maintenance requirements. Proper maintenance preserves both the unit's operational reliability and its safety certification integrity.

Preventive Maintenance for Hazardous Area Installations

Inspect the ANR11D during scheduled plant turnarounds, verifying that all enclosure seals remain intact, cable glands are tight, and grounding connections show no corrosion. Check the PW482-10 power module output voltages against specification (5.1VDC and 24VDC), and verify that all I/O module status LEDs indicate normal operation. Document all maintenance activities to support hazardous area inspection records required by regulatory authorities.

Aeliya Marine Tech Support & Warranty

Your ANR11D purchase includes Aeliya Marine Tech's standard 30-day warranty against defects in materials and workmanship. Our technical support team can assist with compatibility verification, installation guidance, and general troubleshooting. For detailed hazardous area installation engineering, we can refer you to certified professionals in your jurisdiction who specialize in DCS deployment in classified locations.

Frequently Asked Questions

Q1: What safety certifications does the ANR11D carry?

The ANR11D holds both North American CL.I, Div.2, Groups A,B,C,D, T4 certification and European ATEX II 3 G Ex Nc [Nl] IIC T4 X certification, making it suitable for hazardous area installations worldwide.

Q2: What is the difference between ANR10D and ANR11D?

The ANR11D is an enhanced version of the ANR10D featuring the T4 temperature classification, ATEX/IECEx certification, and the improved PW482-10 S2 power module with dual DC outputs (5.1VDC and 24VDC). The ANR11D also carries the NDFL suffix indicating enhanced firmware capabilities.

Q3: What power outputs does the PW482-10 S2 module provide?

The PW482-10 S2 power module provides two regulated DC outputs: 5.1 VDC at 7.8A for logic-level I/O modules, and 24 VDC at 1.7A for field-powered I/O modules.

Q4: What I/O modules are included?

This ANR11D includes the AAB841-S00 S2 analog input module, ATM4A-00 S1 temperature module, ADV161-P00 S2 digital input module, ADV561-P00 S2 digital output module, and the PW482-10 S2 power supply module.

Q5: What does the ATEX marking II 3 G Ex Nc [Nl] IIC T4 X mean?

This marking indicates: Equipment Group II (industrial), Category 3G (Zone 2), Equipment Protection Level Gc, with non-conductive parts [Nl] protection, suitable for IIC gas group (hydrogen, acetylene), T4 temperature class (max 135°C surface temperature), with special conditions X.

Q6: Is this unit new or used?

This ANR11D is in Used condition, inspected by Aeliya Marine Tech and backed by our 30-day warranty with free shipping.

Q7: Can Aeliya Marine Tech assist with hazardous area installation guidance?

Aeliya Marine Tech provides general guidance on certification interpretation. For detailed hazardous area installation engineering, we can refer you to certified professionals specializing in DCS deployment in classified locations.