ABB SPAC 536 C User Manual page 156

Fault codes
18
Shortly after that the self-supervision system has
detected a permanent internal fault the red IRF
indicator is lit. Simultaneously the relay module
puts forward a control signal to the output relay
of the self-supervision system. In most fault
situations an autodiagnostic fault code appears
on the display of the module. The fault code
consists of a red number 1 (one), and a green,
three digit code number. When a fault is de-
Fault code Type of fault
4 Output relay control circuit interrupted or output relay module missing
30 Red Only Memory (ROM) damaged
50 Random Access Memory (RAM) damaged
195 Too low a value on reference channel with multiplier 1
131 Too low a value on reference channel with multiplier 5
67 Too low a value on reference channel with multiplier 25
203 Too high a value on reference channel with multiplier 1
139 Too high a value on reference channel with multiplier 5
75 Too high a value on reference channel with multiplier 25
253 No interruptions from the A/D converter
tected the fault code should be recorded for
further use when the relay module is to be
repaired.
Some of the fault codes that may appear on the
display of the directional neutral overcurrent
relay module SPCS 3C4 are shown in the fol-
lowing list: