Yokogawa NFDR541 Relay Output Module

The Yokogawa NFDR541 Relay Output Module is a reliable field output device designed for use in Yokogawa control and safety systems. It provides secure relay-based output switching for driving external loads such as alarms, solenoids, interlocks, and motor starters. Built with robust isolation and fault detection features, the NFDR541 ensures dependable operation in mission-critical industrial environments.

Key Features

• Relay-based output switching for high reliability

• Galvanic isolation between field wiring and system bus

• Redundant system compatibility for high availability architectures

• Built-in diagnostics and fault detection for safe operations

• Hot-swappable design to minimize downtime during replacement

• Long relay life cycle for continuous industrial operation

• Compact form factor for optimized control cabinet space

• Compatible with Yokogawa safety and control platforms

Technical Specifications

Industry Applications

• Oil & Gas – Control of safety interlocks, alarms, and shutdown systems

• Power Generation – Turbine trips, boiler interlocks, and auxiliary equipment control

• Chemical & Petrochemical – Process safety management and emergency shutdown (ESD)

• Pharmaceuticals – Regulatory-compliant batch control and safety functions

• Water & Wastewater – Reliable relay actuation for pumps and safety devices

• Pulp & Paper – Equipment interlocks, alarms, and control system outputs

Frequently Asked Questions (FAQ)

Q1: What is the function of the NFDR541 module?

It is a relay output module used to drive external loads such as alarms, solenoids, and motor starters.

Q2: How many relay channels does it provide?

It typically provides 8 relay output channels.

Q3: What is the maximum relay contact rating?

Up to 30 V DC / 2 A or 120 V AC / 2 A (resistive load).

Q4: Does the NFDR541 support redundancy?

Yes, it can be used in redundant configurations for safety-critical applications.

Q5: Is it hot-swappable?

Yes, the module can be replaced without shutting down the system.

Q6: What diagnostics are included?

It supports self-diagnosis and output status monitoring.

Q7: What industries commonly use the NFDR541?

It is widely used in oil & gas, power generation, chemical, water, and paper industries.

Q8: What is the operating temperature range?

It operates between 0°C and 55°C.

Q9: How does it ensure system safety?

It provides galvanic isolation and continuous fault monitoring.

Q10: How much does the module weigh?

It weighs approximately 0.3 kg.