Woodward 5441-691 Relay Field Terminal Module

Product Introduction

The Woodward 5441-691 Relay Field Terminal Module is a high-performance interface component designed for reliable relay control and signal routing in industrial automation systems. Engineered to provide secure field wiring connections, this module simplifies the integration of control signals between Woodward controllers and field devices such as relays, actuators, and sensors. Its robust construction and optimized PCB layout ensure dependable operation in environments where electrical noise, vibration, and temperature fluctuations are common. The module offers clear terminal labeling and rugged screw connections, making installation and maintenance efficient even in complex control cabinets.

Technical Specifications

Applications

• Turbine and Generator Control: Provides field termination for relays controlling turbines, compressors, and generators in power plants.

• Industrial Automation: Interfaces programmable logic controllers (PLCs) with external devices requiring isolated relay contacts.

• Oil & Gas Facilities: Handles critical control signals in drilling rigs and pipeline stations where high reliability is essential.

• Marine and Transportation Systems: Ensures robust relay control in ship propulsion systems and heavy-duty locomotives.

• Process Control Plants: Connects sensors, alarms, and control circuits for chemical, pharmaceutical, or food-processing equipment.

Advantages

• High Electrical Isolation: 1500 V RMS isolation between control and field circuits minimizes the risk of noise coupling and equipment damage.

• Flexible Mounting Options: Supports both DIN-rail and panel-mounting for easy integration into new or existing control cabinets.

• Robust Relay Output: SPDT relay contacts with 5 A rating provide reliable switching for a variety of loads.

• User-Friendly Wiring: Removable screw-clamp terminal blocks simplify field connections and maintenance.

• Industrial-Grade Durability: Wide temperature range and vibration resistance ensure consistent performance in harsh environments.

• Global Compliance: Meets CE, UL, and RoHS standards for worldwide acceptance in critical industrial applications.

FAQ

1. What type of relay outputs does the 5441-691 module provide?
   It provides Form C (single-pole, double-throw) relay outputs, allowing both normally open and normally closed contact configurations to suit various control needs.

2. How does the module achieve isolation between the control circuit and field wiring?
   Galvanic isolation rated at 1500 V RMS is integrated into the design, effectively protecting control electronics from transient voltages and electrical noise.

3. Can the relay contacts handle inductive loads such as solenoids or motors?
   Yes, but it is recommended to use proper snubber or flyback suppression components to protect the contacts and maintain long-term reliability.

4. Is the module compatible with standard 24 VDC control systems?
   Absolutely. Its 18–32 VDC operating range makes it suitable for typical 24 VDC industrial control applications.

5. What is the recommended tightening torque for the terminal screws?
   The terminal blocks are designed for a torque of approximately 0.5–0.6 Nm, ensuring secure connections without damaging the conductor or terminal.

6. Does the module require an external power supply for the relay coils?
   Yes, an external 24 VDC supply within the specified range is required to energize the relay coils and power the internal circuitry.

7. How does the module handle high inrush currents at the relay contacts?
   The relay contacts are rated for 5 A continuous and can tolerate moderate inrush currents; external surge protection is recommended for very high inrush loads.

8. Can the module be mounted horizontally as well as vertically?
   Yes, it can be mounted in any orientation as long as there is adequate ventilation and the wiring is properly secured.

9. What diagnostic indicators are provided on the board?
   Integrated LED indicators show relay status and power supply presence, facilitating quick troubleshooting during commissioning and maintenance.

10. Is the 5441-691 suitable for redundant control configurations?
    Yes. Multiple modules can be wired in parallel or series configurations to implement redundant or fail-safe control schemes.

Recommended Related Models

Popular Woodward Models

FAQ

1. What type of relay outputs does the 5441-691 module provide?
   It provides Form C (single-pole, double-throw) relay outputs, allowing both normally open and normally closed contact configurations to suit various control needs.

2. How does the module achieve isolation between the control circuit and field wiring?
   Galvanic isolation rated at 1500 V RMS is integrated into the design, effectively protecting control electronics from transient voltages and electrical noise.

3. Can the relay contacts handle inductive loads such as solenoids or motors?
   Yes, but it is recommended to use proper snubber or flyback suppression components to protect the contacts and maintain long-term reliability.

4. Is the module compatible with standard 24 VDC control systems?
   Absolutely. Its 18–32 VDC operating range makes it suitable for typical 24 VDC industrial control applications.

5. What is the recommended tightening torque for the terminal screws?
   The terminal blocks are designed for a torque of approximately 0.5–0.6 Nm, ensuring secure connections without damaging the conductor or terminal.

6. Does the module require an external power supply for the relay coils?
   Yes, an external 24 VDC supply within the specified range is required to energize the relay coils and power the internal circuitry.

7. How does the module handle high inrush currents at the relay contacts?
   The relay contacts are rated for 5 A continuous and can tolerate moderate inrush currents; external surge protection is recommended for very high inrush loads.

8. Can the module be mounted horizontally as well as vertically?
   Yes, it can be mounted in any orientation as long as there is adequate ventilation and the wiring is properly secured.

9. What diagnostic indicators are provided on the board?
   Integrated LED indicators show relay status and power supply presence, facilitating quick troubleshooting during commissioning and maintenance.

10. Is the 5441-691 suitable for redundant control configurations?
    Yes. Multiple modules can be wired in parallel or series configurations to implement redundant or fail-safe control schemes.

Recommended Related Models

Popular Woodward Models

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