– “Main Breaker Trip (Low Voltage)” – is a serious alarm that should never be ignored. While it may initially appear to be a simple nuisance trip, it is often the first symptom of a failing spindle drive, a chafed motor cable, or an inadequate facility power supply.
Use a multimeter to check the wiring harness for continuity and shorts.
When the MCCB trips due to a magnetic event (short circuit, massive phase imbalance, or severe undervoltage), the voltage monitoring relay loses power. It sends a signal back to the I/O module, triggering . doosan code vpv001-05
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In rare cases, the issue might be with the ECU itself failing to process the sensor signal. Troubleshooting and Solutions – “Main Breaker Trip (Low Voltage)” – is
Diagnostic systems break error codes down into a primary identifier and a Failure Mode Identifier (FMI).
Unplug the connector and verify that the copper pins are clean and free of green corrosion. Clean with electronic cleaner spray if necessary. Step 3: Conduct a Resistance Test (Multimeter) Set a digital multimeter to measure resistance (Ohms Ωcap omega When the MCCB trips due to a magnetic
The EPOS screen will display real-time failure screens, demanding operator intervention. Step-by-Step Troubleshooting and Diagnostic Guide
: Use an infrared thermometer to check the actual block temperature. If the gauge says it's boiling but the thermometer shows a normal range, the sensor is likely the liar.
If the voltage remains low after these checks, the issue may lie within the , which might require a technician to calibrate or repair.
Fill the coolant to the appropriate level if it is low. 2. Inspect the Sensor Connector