Section 7 Troubleshooting7.1 Fault tracing7.1.1 Identifying hardware errorsMost hardware errors are caused by external events which physically damage theIED's hardware. Probable causes are, for example, overvoltage, spikes and shortcircuits which damage one or several of the IED's physical inputs or outputs. Humanerrors can also cause damage during installation or operation. As a consequence, oneor several physical cards, inputs or outputs may stop operating due to the damage.1. Check the module with an error.Check the IED supervision events in Main Menu/Monitoring/IED status/Self-supervision for a faulty hardware module.2. Inspect the IED visually• Inspect the IED visually to find the physical error causes.• If you can find some obvious physical damage, contact ABB for repair orreplacement actions.3. Check whether the error is external or internal.• Check that the error is not caused by external origins.• Remove the wiring from the IED and test the input and output operationwith an external test device.• If the problem remains, contact ABB for repair or replacement actions.7.1.2 Identifying runtime errorsRuntime errors may be caused by component failures or software problems. Someerrors are cleared automatically but sometimes, for example in case of a componentfailure, proper corrective actions are needed.1. Check the error origin from the IED's supervision events Main Menu/Monitoring/IED status/Self-supervision.2. Reboot the IED and recheck the supervision events to see if the fault has cleared.3. In case of persistent faults, contact ABB for corrective actions.1MRS756499 A Section 7TroubleshootingRED615 77Operation Manual
