Introduction
The Woodward 5441‑645 Relay Interface Module is a robust industrial interface designed to bridge automation control logic with external devices requiring mechanical switching. Engineered for heavy‑duty environments, this module offers dependable relay performance, strong electrical isolation, and flexible output configurations. It is an excellent solution for integrators and engineers seeking reliable relay‑based output expansion in complex control panels, distributed automation systems, and process control architectures.
Built to withstand industrial stresses and maintain contact integrity over extended service life, the 5441‑645 ensures stable performance in power generation, manufacturing, and infrastructure applications where dependable switching and signal separation are essential.
Technical Specifications
| Parameter | Specification |
|---|
| Model | 5441‑645 |
| Module Type | Relay Interface Module |
| Manufacturer | Woodward |
| Relay Type | Electromechanical relay outputs |
| Contact Rating | Up to 5 A per channel (typical) |
| Contact Configuration | SPDT/DPDT options depending on variant |
| Number of Channels | Multiple relay outputs |
| Input Voltage Range | Compatible with standard control logic (24 VDC typical) |
| Isolation | Electrical isolation between logic and load circuits |
| Mounting | Panel or rack installation |
| Operating Temperature | Industrial rated range |
| Compliance | Industry standard safety and quality certifications |
Applications
The 5441‑645 is commonly used for:
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Output expansion for PLCs and control systems
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Interfacing control logic to field devices such as valves, indicators, and actuators
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Safety interlock and system shutdown signaling
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Building and process automation installations
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Electrical isolation between control logic and power loads
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Relay‑based control in distributed automation networks
Its mechanical relay outputs provide dependable switching under variable load conditions, delivering reliable performance in demanding scenarios.
Advantages
Reliable Mechanical Switching
Supports significant load currents with electromechanical relay contacts, suitable for a range of field devices.
Flexible Contact Options
Normally open (NO) and normally closed (NC) configurations allow adaptive control scheme design.
Electrical Isolation
Clear separation between logic inputs and load outputs protects sensitive control circuitry.
Industrial Durability
Constructed to handle industrial vibrations, temperature variations, and extended duty cycles.
Ease of Integration
Panel or rack mountable format simplifies wiring and system layout in control cabinets.
The 5441‑645 delivers a solid combination of relay switching capability, electrical protection, and installation convenience.
Technical FAQs
1. What is the primary function of the 5441‑645?
It provides relay‑based switching between automation logic and external devices or loads.
2. What type of relays does the module use?
Electromechanical relay outputs.
3. How much current can each contact handle?
Typically up to about 5 A per channel.
4. Can the relay outputs be configured both NO and NC?
Yes, depending on the specific contact configuration used.
5. Is this module suitable for industrial environments?
Yes, it is built for rugged industrial use.
6. What voltage systems does it support?
Compatible with standard industrial control voltages (commonly 24 VDC logic).
7. How is it mounted?
Panel or rack mounting in control enclosures.
8. Does it provide electrical isolation?
Yes — it isolates control logic from switched loads.
9. What devices can it switch?
Valves, solenoids, lamps, actuators, and similar field loads within ratings.
10. Is it compatible with PLC I/O expansion?
Yes, it is well‑suited for expanding relay outputs from PLCs and other controllers.
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