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Marine Automation

Diagnosing and Repairing NaviOp Touch Button Panels on Marine Control Systems

March 7, 2025
Conexiones de una botonera táctil NaviOp, destacando terminales para alimentación y comunicación de datos en electrónica naval.. NaviOp, .

Advanced NaviOp Troubleshooting: A Case Study in Portals

On a vessel in Portals we investigated intermittent behaviour on NaviOp touch button panels at the helm. These panels controlled essential functions such as navigation lights and the horn, so erratic operation could not be treated as a minor inconvenience. It required a systematic diagnostic process covering power supply, PLC communication and the condition of the touch interfaces themselves.

Key Components in a NaviOp System

NaviOp is an advanced marine automation platform that integrates monitoring and control functions through a central programmable logic controller (PLC). The PLC receives inputs from touch panels and sensors, processes logic and commands outputs across the vessel.

  • Touch button panels: rugged user interfaces for bridge and control functions.
  • Marine PLC: the central programmable control unit.
  • Navigation light circuits: essential for visibility and regulatory compliance.
  • Horn/acoustic signalling: a safety-critical communication system.

Preliminary Fault Analysis

The first stage focused on three likely fault areas:

  1. Power supply: voltage level, stability and ripple at the touch panels.
  2. PLC communication: protocol status, data integrity and intermittent channels.
  3. Touch panel integrity: response, calibration and local electronics condition.

Diagnostic Methodology

We applied a structured set of tests using professional marine and industrial instrumentation:

  • Voltage and transient analysis with a Fluke 190-204 digital oscilloscope.
  • Continuity and resistance checks on communication wiring using a Megger AVO830 multimeter.
  • Visual inspection of connectors, solder joints and touch panel PCBs.
  • Verification of PLC configuration with the manufacturer’s diagnostic software.

Preliminary Findings and Corrective Actions

The fault appeared to be multifactorial. Voltage readings showed minor irregularities, communication with the PLC was intermittent on some channels, and two touch panels had reduced sensitivity in specific areas.

The recommended corrective actions were:

  1. Replace voltage regulators in the touch panel power supply unit.
  2. Update PLC firmware to maintain compatibility with current communication protocols.
  3. Recalibrate the touch panels using the manufacturer’s proprietary software.
  4. Install additional line filters to reduce possible electromagnetic interference.

Why Proactive Maintenance Matters

Touch panel issues may begin as occasional misoperation, but on a modern yacht they can affect lighting, alarms, pumps and other systems that are important for safety and compliance. Preventive maintenance should include:

  • Quarterly inspection of control and navigation systems.
  • Regular firmware and software updates.
  • Simulated stress tests to identify weak components before they fail during operation.
  • Basic crew training for first-level diagnostics and emergency procedures.

Conclusion

Modern marine automation systems require careful troubleshooting by technicians who understand both electronics and vessel operations. If you are seeing similar NaviOp anomalies, a documented inspection and maintenance plan can prevent a small fault becoming an operational risk.

For advanced diagnostics and tailored marine automation support, visit Area Electronica. Our team can help keep your vessel safe, efficient and ready for every passage.

Additional Resources