The Kongsberg Autronica EA-300/KR is a high-reliability microcomputer processor unit designed for critical marine, offshore, and industrial monitoring systems. Engineered for real-time data acquisition, signal processing, and system supervision, it serves as a central control and processing module within Autronica engine monitoring, fire detection, and alarm automation networks.
Built with marine-grade hardware and protective housing, the EA-300/KR delivers exceptional vibration resistance, electromagnetic compatibility (EMI) immunity, and operational stability under demanding shipboard environments. It features integrated communication interfaces and multi-channel I/O processing capabilities to maintain continuous, deterministic system operation.
| Parameter Specification | Value / Feature Details |
| Brand | Kongsberg / Autronica |
| Model | EA-300/KR |
| Series | EA System Hardware Series |
| Product Name | Microcomputer Processor Unit |
| Country of Origin | Norway |
| Product Status | Active / Available |
| Dimensions (H x W x D) | 240 mm x 120 mm x 160 mm |
| Weight | 1.85 kg (4.08 lbs) |
| Operating Supply Voltage | 24 V DC (18 to 32 V DC) / < 18 W |
| Operating Temperature | -15°C to +70°C (+5°F to +158°F) |
✔ Visual Check: Inspect the outer housing, card-edge connectors, and mounting brackets for physical impact, salt-air corrosion, or transit damage before installation.
✔ Rack & Enclosure Mounting: Secure the processor unit into the target sub-rack or cabinet slot using marine-rated vibration damping mounts and retention screws.
✔ Grounding Verification: Ensure a low-impedance copper grounding strap connects the chassis earth terminal directly to the vessel panel ground bus to maximize noise immunity.
✔ Power Supply Check: Verify 24 V DC auxiliary supply lines with a multimeter to confirm voltage levels remain within the 18–32 V DC operating window prior to powering on.
✔ Communication & Link Diagnostic: Power up the system and monitor front-panel status LEDs to confirm processor initialization and normal communication loop activity.
◆ Dust & Moisture Mitigation: Periodically clear dust accumulation from ventilation grilles using clean, dry compressed air; maintain cabinet seals to prevent salt-fog entry.
◆ Terminal & Connector Inspection: Inspect rear terminal block screws and bus cable connectors during scheduled vessel maintenance turnarounds to ensure tight connections against engine vibration.
◆ Battery & Memory Care: Inspect onboard RTC/CMOS backup batteries periodically and replace them per manufacturer schedules to preserve real-time clock and log settings.
◆ Software Project Backups: Maintain up-to-date offline backups of system parameter settings, alarm thresholds, and firmware configurations on service laptops.
⚠ Processor System Fault / Hardware Alarm LED Active
Check auxiliary input voltage levels. If power is normal, isolate power, unseat the unit, clean edge contacts, and re-seat firmly into the rack slot.
⚠ Communication Link Timeout / Loop Isolation
Inspect serial or fieldbus connection wiring for loose terminal screws or broken wire shielding. Verify that end-of-line termination resistors are correctly placed.
⚠ Configuration / Memory Loss on Boot
Replace internal system backup batteries and re-download configuration parameters from the engineering workstation.
⚠ De-energize Before Handling: Turn off system supply power before connecting or disconnecting terminal blocks or pulling the processor unit from its slot.
⚠ Electrostatic Discharge (ESD) Protection: Wear a grounded anti-static wrist strap when handling the unit or touching exposed backplane connectors to protect sensitive CMOS logic circuits.
⚠ Vibration Lock Requirement: Always ensure front panel retaining screws are completely tightened to prevent vibration-induced contact separation during vessel operation.
⚠ Voltage Limits: Operate the unit strictly within the 18–32 V DC power range to prevent damage to internal DC-DC converter circuits.
? Q: What is the primary application of the Kongsberg Autronica EA-300/KR unit?
A: It is designed as a central microcomputer processing module for marine automation, engine monitoring, alarm monitoring, and safety shutdown systems.
? Q: Does the EA-300/KR support marine classification society standards?
A: Yes, it is engineered to satisfy strict type-approval requirements (such as DNV, ABS, and LR) for marine and offshore cabinet environments.
? Q: Can the EA-300/KR be replaced without re-configuring external sensor wiring?
A: Yes, field terminal blocks and bus connectors disconnect directly from the unit casing, allowing drop-in replacement without re-wiring sensor channels.
? Q: Does the unit require specialized software for system diagnostics?
A: Basic status and channel faults are displayed via onboard LEDs, while detailed diagnostic traces and parameter adjustments can be accessed using Autronica system service tools.
