Error Responses And Corrective Measures; Overview - Siemens SIPROTEC 5 Manual

8.8

Error Responses and Corrective Measures

Overview

8.8.1
When device errors occur and the corresponding supervision functions pick up, this is displayed on the device
and also indicated. Device errors can lead to corruption of data and signals. These data and signals are marked
and tagged as invalid, so that affected functions automatically go into a secure state. If the supervision func-
tions pick up, this will lead to defined error responses.
How Do Device Errors Make Themselves Noticeable
In case of a device error the supervision functions of the device pickup. The device responds according to the
type and severity of the error. To report an error, supervision functions use outputs on the device and indica-
tions.
Run LED (green)
Error LED (red)
Life contact
Group-warning indication
Group warning
Log of the device
Determination of Causes for Defects and Corrective Measures
To determine the cause for defect and the corresponding corrective measure, proceed step by step.
Step 1:
Step 2:
SIPROTEC 5, Fault Recorder, Manual
C53000-G5040-C018-5, Edition 11.2017
The external auxiliary voltage is present. The device is ready for operation.
The device is not ready for operation. The life contact is open.
Signaling of device readiness following successful device startup.
The device remains in operation and signals an error via the prerouted LED
and the log.
Indications of causes for defects and corrective measures
Pick up of supervisions leads to one of the following defect severities in all cases.
•
Defect severity 1:
Internal or external device error that is reported. The device stays in operation.
•
Defect severity 2:
Severe device failure, the device restarts (reset) to correct the cause for defect.
•
Defect severity 3:
Severe device failure, the device goes to a safe condition (fallback mode), as the
correction of defects by a restart is not possible. In fallback mode, the protection
and automated functions are inactive. The device is out of operation.
•
Defect severity 4:
Severe device-external failure, the device switches the protection and automatic
functions to inactive for safety, but stays in operation. Normally, the user can
correct the fault by himself.
For every defect severity, you will find detailed tables with information about causes
for defects, error responses, and corrective measures in the following chapters.
Supervision Functions
8.8 Error Responses and Corrective Measures
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