The ME-C9.5 main engine of a certain ship suddenly experienced a failure of all PMI sensors during sea navigation. The investigation includes the following points:
1.Check if the wiring is loose according to the drawing;
2.Check if the network interface – Ethernet cable is abnormal;
3.Check the code in the upper left corner of the board inside the PMI-DAU junction box;
4.Restart the control board inside the PMI-DAU junction box;
1.According to feedback from the ship, all wiring is not loose;
2.Re plug and unplug the network cables in the junction box after MOP without any changes;
3.The code in the upper left corner of the PMI-DAU junction box keeps spinning;
4.After re plugging and unplugging the power plug of the PMI-DAU junction box, the sensor returned to normal.
If a ship encounters such problems during navigation, there is no need to worry. By manually adjusting the pressure, it can continue sailing. Then, according to the step-by-step troubleshooting described in this article, based on past experience, the network cable plug in the control box behind the centralized control room is prone to malfunction, so it can be prioritized to inspect this area. Multiple explosion pressure sensors have malfunctioned, and in most cases, it is not a wiring issue. The interior of the PMI-DAU junction box is labeled with instructions for the box control board code, which can analyze the current status of the control board.
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