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Key Technical Specifications
| Parameter | Value |
|---|---|
| Model | Autronica KRT-1 |
| PCB part number | 7225-031.0000 |
| Product type | Printed circuit board / control PCB |
| Associated system | BS-330M |
| Primary function | Alarm-system control, monitoring, or signal processing |
| Application | Marine and industrial alarm systems |
| System architecture | Verify against the installed BS-330M rack or panel |
| Supply voltage | Not verified from available public listings |
| Current consumption | Not verified from available public listings |
| Connectors | Verify connector type and pin assignment from the board revision |
| Board dimensions | Not verified from available public listings |
| Operating temperature | Not verified from available public listings |
| Firmware or programmable devices | Verify onboard firmware and component revision before replacement |
| Replacement status | Legacy spare; availability is supplier-dependent |
| Condition | Listing-specific; do not assume new or tested condition |
Public product information identifies the Autronica KRT-1 as a PCB used in the BS-330M system and associates it with part number 7225-031.0000. The available search results do not provide a complete OEM datasheet with electrical ratings, connector pinout, dimensions, or environmental limits. Those values must be verified from the installed system documentation and board markings.
Product Introduction
The Autronica KRT-1, part number 7225-031.0000, is a system-specific printed circuit board for the Autronica BS-330M alarm and monitoring platform. It is intended as a service replacement for installations that still depend on this legacy Autronica control hardware.
The board is selected by exact system and part-number match, not by appearance alone. Confirm the PCB revision, connector layout, firmware or programmed-device markings, supply requirements, and BS-330M configuration before installation. Do not substitute a KRC-1, KRH-1, or another visually similar Autronica board without an approved cross-reference.
KRT-1
KRT-1
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to This Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No LEDs or system response | Missing rack supply, fuse, backplane fault, or incorrectly seated PCB | ❌ Low to medium | Measure the system supply at the rack or panel terminals and inspect adjacent board indicators | Verify system power and seating before replacing the KRT-1 |
| BS-330M fails to complete startup | PCB fault, incompatible revision, corrupted memory, or backplane communication problem | ✅ High | Record the startup sequence and compare diagnostic indicators with the BS-330M manual | Confirm board revision and test the replacement in the correct system |
| Alarm channels are unavailable | KRT-1 processing fault, disconnected field wiring, or another I/O board failure | ✅ Medium | Check whether the system recognizes the board and compare affected channels with adjacent modules | Isolate the fault to the KRT-1 before ordering a replacement |
| False alarms occur after installation | Wrong board variant, configuration mismatch, wiring error, or unstable supply | ✅ High | Compare terminal positions, jumpers, switch settings, and alarm logs with the original board | Stop the test and restore the documented configuration |
| System detects an unknown or missing board | Wrong part number, hardware revision mismatch, or connector problem | ✅ High | Compare the complete label, PCB number, revision code, and connector seating | Use an exact 7225-031.0000 match unless Autronica documentation confirms equivalence |
| Intermittent operation | Oxidized connector, cracked solder joint, vibration, or thermal stress | ✅ Medium | Inspect under magnification and monitor supply voltage while checking connectors | Clean or repair only under an approved procedure; replace if the PCB remains intermittent |
| Communication or internal bus fault | Backplane, ribbon cable, address setting, or interface fault | ✅ Medium | Reseat cables and inspect continuity with power isolated; review system diagnostics | Check the backplane and cables before condemning the PCB |
| Outputs or indications remain frozen | Processor fault, memory issue, or system scan failure | ✅ High | Cycle power under controlled conditions and observe the boot and diagnostic sequence | Replace the PCB if the fault follows the |
| Fault begins after board swap | Incorrect jumper or switch position, firmware mismatch, or pinout difference | ✅ High | Photograph the old and replacement boards side by side and compare all configuration links | Never transfer wiring from memory; verify every connection against the schematic |
| PCB was handled without ESD protection | Latent semiconductor or memory damage | ✅ High | Inspect the board, then perform a controlled rack-level functional test | Use a grounded wrist strap, ESD bag, and antistatic work surface |
Support note: If the fault remains, contact technical support with photos of the board label, PCB revision, connectors, rack position, system LEDs, alarm logs, and measured supply voltages.
Frequently Asked Questions
What is the Autronica ?
The is an Autronica printed circuit board associated with the BS-330M alarm and monitoring system. Public product information identifies the board part number as 7225-031.0000.
Is 7225-031.0000 the same as ?
Available listings associate 7225-031.0000 with , but the complete label should still be checked. Compare the board revision, connector arrangement, programmed-device markings, and any suffix before accepting it as a direct replacement.
Can I replace the with a KRC-1 or KRH-1?
No—not without an approved technical cross-reference. Other Autronica boards use different designations and part numbers; for example, KRC-1 and KRH-1 are listed as separate system spares. Similar physical dimensions do not prove electrical or functional compatibility.
Can I hot-swap the ?
Do not assume hot-swapping is permitted. Isolate system power, follow the vessel or plant lockout procedure, and verify that connected alarm circuits cannot create an unsafe condition during removal. Live removal may damage the backplane or generate false alarms.
Will replacing the PCB preserve the system configuration?
Not necessarily. Configuration may reside in onboard memory, programmable devices, jumpers, switches, or the wider BS-330M system. Photograph the original board and document all settings before removal. After installation, perform an approved alarm and indication test.
Is the Autronica obsolete?
It should be treated as legacy hardware. Current search results show specialist-market listings rather than a readily available current-production OEM datasheet, so stock condition and support may vary. Request exact photographs, revision details, test evidence, warranty terms, and return conditions.
Why is a surplus cheaper than a factory replacement?
Legacy boards may be sold as New Surplus, opened-box, or Used/Tested inventory rather than current factory production. The price alone does not establish quality. Require a written condition statement and a test report showing power-up, system recognition, connector inspection, and functional operation in a compatible BS-330M test system.
