26
Fault codes
Once the self-supervision system has detected a
permanent fault, the IRF indicator on the front
panel of the module is lit and, at the same time,
the normally operated signal relay of the self-
supervision system drops out.
In most fault situations, a fault code consisting
of a red digit one (1) to the left and a green code
number appears on the display of the relay mod-
ule. The fault code indicates the fault type and
cannot be reset. To facilitate maintenance and
repair it should be recorded and stated, when serv-
ice is ordered.
The fault codes of the protection relay module
SPCF 1D15 are explained in the following table:
Fault code Explanation
4 Faulty or missing control circuit
30 Faulty program memory
41 Half-cycle detector faulty
50 Internal RAM memory faulty
51 Parameter memory (EEPROM) block 1 faulty
52 Parameter memory (EEPROM) block 2 faulty
53 Parameter memory (EEPROM) block 1 and 2 faulty
56 Parameter memory (EEPROM) key faulty. To be formatted by writing V167=2.
195 Measured value too low in reference channel
203 Measured value too high in reference channel
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