Rotary Drilling Rig Engine Failure to Start

I. Basic Case Information (Model)

Product: Rotary Drilling Rig

Model: XR150DIII

II. Fault Symptom

The engine fails to start, with fault codes for slewing encoder error and controller bus error.

III. Fault Analysis

Check the controller input power supply: 24V.
Unplug the power cable of the slewing encoder, and the controller bus fault disappears.

IV. Troubleshooting Process

First unplug the power cable of the slewing encoder; the fault code disappears.
Reconnect the power cable plug of the slewing encoder, remove the metal rotating plug connecting the slewing encoder and power cable, and the fault disappears, ruling out a short circuit in the slewing encoder power cable.

V. Fault Cause (Conclusion)

Internal damage to the slewing encoder caused the controller bus fault.The fault was eliminated after replacing with a new slewing encoder.

More information

Rotary Drilling Rig Engine Failure to Start

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