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Phone: +86 16626708626Description
Key Technical Specifications
- Product Type: Discrete I/O Field Terminal Module, pairs with Woodward’s 48/24 Discrete Combo Module
- System Compatibility: MicroNet Simplex and MicroNet Plus platforms
- Discrete Inputs: 24 channels, optically isolated
- Relay Outputs: 12–13 channels reported across listings, appears to be SPDT type — confirm exact relay count and contact configuration against the OEM datasheet before ordering
- Wiring Style: Field terminal board — connects into the Combo module rather than running standalone
⚠️ A word of caution on this part number specifically: distributor listings for the 5441-693 are unusually inconsistent — dimensions, weight, voltage, and even communication protocol claims vary widely from one reseller page to the next, and at least one page appears to describe an entirely different Woodward document (a MicroNet Plus cybersecurity upgrade bulletin) rather than this module. Don’t spec a replacement off any single distributor’s page. Pull the OEM Woodward MicroNet manual for the 48/24 Discrete Combo Module and its FTM before you order or wire this in.
Product Introduction
The Woodward 5441-693 is a Discrete I/O Field Terminal Module built for Woodward’s MicroNet Simplex and MicroNet Plus control platforms. It handles the field wiring side for a 48/24 Discrete Combo module, bringing in 24 optically isolated discrete inputs and routing relay outputs for switching field devices, so techs aren’t landing wires directly on the Combo module’s processing card.
Sourcing accurate specs on this part number takes more legwork than usual — reseller listings disagree on several physical and electrical details. Confirm the exact relay count, contact configuration, and mounting dimensions against Woodward’s own MicroNet documentation before you commit to a replacement.
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| Discrete input reads stuck on or off | Broken field wiring, or a failed opto-isolator on that input channel | ✅ High | Measure the raw field signal at the terminal ahead of the FTM | Verify field wiring and the source device before condemning the module |
| Relay output won’t energize | Coil circuit wiring fault, or a failed relay on the FTM | ✅ High | Measure coil voltage at the FTM terminal when the output is commanded | Confirm command signal is present before assuming relay failure |
| Relay output stays energized after command drops | Welded/stuck relay contacts from repeated high-current switching | ✅ High | Check output state independent of command signal from the controller | Replace the module if contacts are confirmed welded — this isn’t a wiring issue |
| No communication between the FTM and the Combo module | Loose or damaged connector between the FTM and Combo module | ⚠️ Medium | Reseat the connector and inspect pins for damage or corrosion | Rule out the connector and Combo module before replacing the FTM |
| Multiple inputs read incorrectly at once | Shared power supply or ground fault affecting a bank of channels | ⚠️ Medium | Check the field power supply feeding that channel group | Fix the supply/ground issue — a single-channel fault wouldn’t show this pattern |
If these checks don’t isolate the issue, contact technical support with the exact channel numbers affected and, if possible, a copy of the OEM Woodward documentation for your specific Combo/FTM pairing.
5441-693
5441-693
Frequently Asked Questions (FAQ)
What does this module actually do — is it a controller or just a terminal board?
It’s a terminal board. All the logic and processing happens in the paired 48/24 Discrete Combo module; the 5441-693 just brings your field wiring in and routes it to that Combo module through relays and isolated inputs.
Is this a guaranteed drop-in replacement for the FTM in my MicroNet rack?
It should be for the same part number, but given how much distributor specs disagree on this one, confirm the exact relay count and configuration against your existing unit before you order. Don’t rely on a single reseller’s spec sheet to make that call.
Will I need to reconfigure the Combo module after swapping this?
No — the FTM carries no configuration of its own. The Combo module’s setup is untouched by a terminal board swap. Just make sure your field wiring lands on the same terminal numbers as the old unit.
Can I hot-swap this while the system is running?
No. This board carries live field wiring and relay-switched loads. De-energize before you disconnect it, or you risk a nuisance trip or a damaged relay driver on the Combo module side.
Why do I see wildly different specs for this exact part number on different sites?
Honestly, that’s a real problem with this specific part — several listings appear to be templated or auto-generated and don’t agree with each other on basics like dimensions or relay count. Treat any spec you find online as a starting point, not a final answer, and confirm against Woodward’s own documentation before you wire anything in.
What condition should I expect on a surplus unit?
Ask directly — “new surplus” typically means unused stock pulled from decommissioned equipment, while “rebuilt” or “refurbished” should mean it was tested and serviced before resale. Get that distinction in writing, along with whatever functional test the seller actually ran, before you put it into a running control system.
What warranty applies to a part like this?
Terms vary by seller — some quote a standard one-year or even two-year warranty on surplus stock, others sell as-is. Confirm the specific coverage before ordering, since a control-system outage while you wait on a warranty claim isn’t something you want to discover after the fact.
