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Product Introduction
The Woodward 5441-645 Relay Interface Module is an industrial-grade signal interface module specifically engineered for use in automation and control environments that require reliable relay-based signal switching. As part of Woodward’s robust line of control and interface solutions, the 5441-645 facilitates seamless connectivity between digital logic signals and external high-power devices such as alarms, contactors, motor starters, and valves.
This relay interface module ensures electrical isolation, signal amplification, and load-handling capability for systems where digital controller outputs must drive higher voltage or current loads. Built for rugged environments, the module offers long-lasting mechanical and electrical performance, crucial in industries like power generation, oil and gas, transportation, and process automation.
Product Specifications
| Parameter | Details |
|---|---|
| Model Number | 5441-645 |
| Manufacturer | Woodward Inc. |
| Product Type | Relay Interface Module |
| Channels | 8 independent relay outputs |
| Relay Type | Electromechanical |
| Contact Type | SPDT (Single Pole Double Throw) |
| Contact Rating | 5 A @ 250V AC / 30V DC |
| Input Signal Voltage | 5V / 12V / 24V DC (logic-compatible) |
| Coil Voltage | 24V DC nominal |
| Isolation | 1500V RMS between input and output |
| Response Time | < 10 ms |
| Status Indication | LED indicators for each channel |
| Operating Temperature | -20°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Humidity | 5% to 95% non-condensing |
| Mounting | DIN rail or panel mount |
| Power Consumption | Approx. 5 W |
| Module Dimensions | 130 × 90 × 40 mm |
| Weight | 0.32 kg |
| Compliance | CE, UL, RoHS |
Product Applications
The 5441-645 Relay Interface Module is tailored for industries and systems that demand electrical load switching via relays. Its versatility and rugged design make it suitable for:
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Power Plants – Actuating alarms, circuit breakers, and auxiliary systems.
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Gas and Steam Turbines – Providing relay interfaces for fuel valves and safety shutdowns.
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Process Automation Systems – Operating solenoids, actuators, and relays from digital controllers.
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Marine and Offshore Systems – Interfacing monitoring outputs with control devices.
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Data Centers and Utilities – Enabling isolation and logic signal interfacing for redundant controls.
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Oil & Gas Facilities – Switching field I/O signals safely in classified or remote zones.
Product Advantages
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Electrical Isolation: Safeguards low-voltage logic devices from high-power load circuits.
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High Load Capacity: Relays rated for 5A switching capability, suitable for most industrial actuators and alarms.
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LED Status Indicators: Visual diagnostics per channel improves fault identification and maintenance speed.
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Robust Construction: Industrial-grade design supports long-term reliability in demanding environments.
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Flexible Signal Compatibility: Works with standard 5V, 12V, and 24V digital logic signals.
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Compact and Scalable: Slim form factor with DIN rail mounting supports modular installations.
Frequently Asked Questions (FAQ)
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Q: What is the main function of the 5441-645 Relay Interface Module?
A: It serves as a bridge between low-level control signals and high-voltage actuated devices, using relays for isolation and amplification. -
Q: How many relays are available in the module?
A: The module has 8 independent SPDT relay outputs. -
Q: Can it switch AC and DC loads?
A: Yes, each relay is rated for both AC (250V) and DC (30V) switching, up to 5A. -
Q: What kind of input signals does it accept?
A: It is compatible with 5V, 12V, and 24V DC logic signals from PLCs or microcontrollers. -
Q: Is it compatible with Woodward control systems?
A: Yes, it is designed to integrate seamlessly with Woodward controllers and can also interface with third-party systems. -
Q: Are there LED indicators for status checking?
A: Yes, each relay channel has an LED for activation and power status monitoring. -
Q: Can this module be mounted on a DIN rail?
A: Yes, it supports both DIN rail and panel mounting configurations. -
Q: Is it safe to use in high humidity environments?
A: Yes, it supports up to 95% non-condensing humidity levels. -
Q: Does it offer surge or overvoltage protection?
A: While the relay circuit inherently offers some protection, external surge protection is recommended for critical applications. -
Q: What certifications does this module carry?
A: It is CE certified, UL recognized, and RoHS compliant.
Recommended Related Models (Same Series or Functionally Similar)
| Model Number | Description | Channels | Function Type | Notes |
|---|---|---|---|---|
| 5441-635 | Opto Isolator Module | 8 | Digital Signal Isolation | For low-voltage isolation |
| 5462-758 | Relay Output Module | 8 | Relay Output | Similar relay functions |
| 5418-740 | Multiplexer Interface Module | 16 | Multiplexed I/O | Shared line control |
| 5464-210 | Digital I/O Module | 16 | Digital Input/Output | Bidirectional channels |
| 5501-378 | Digital Expansion Interface | 32 | Input Interface | For logic signal expansion |
| 5417-125 | Simulation Interface Module | – | Testing Interface | Hardware simulation for test use |
Popular Woodward Models (High-Demand Modules from the Same Brand)
| Model Number | Description | Application Area | Notes |
|---|---|---|---|
| 505-4762 | 505 Governor Control | Turbine Management | Widely used in power plants |
| 723PLUS-9905-002 | Digital Speed Control | Engine Control | Advanced programmable controller |
| 2301A-GE | Load Sharing and Speed Control | Generator Sets | Popular for gen-set synchronization |
| 8440-2089 | Atlas-II Control Platform | Steam & Gas Turbine | High-speed digital controller |
| 8200-1301 | Digital Reference Unit | Industrial Engine Control | Signal referencing interface |
| 5501-380 | I/O Expansion Module | Distributed Systems | Used in modular control designs |
