ABB SPAU 140 C User Manual And Technical Description page 52

Fault codes
Calculation of
the checksum
32
Once the self-supervision system has detected a
permanent relay fault, the IRF LED 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 off.
In most fault situations an auto-diagnostic fault
code is shown on the relay display. The fault
code cannot be reset. The fault code consists of
Fault Explanation
code
1 Power reset
4 Faulty output relay path or missing output relay card
30 Faulty program memory (ROM)
50 Faulty working memory (RAM)
51 Faulty parameter memory (EEPROM) for block 1
52 Faulty parameter memory (EEPROM) for block 2
53 Faulty parameter memory (EEPROM) for block 1 and 2
54 Faulty parameter memory (EEPROM) for block 1 and 2 with different checksums
56 Faulty parameter memory (EEPROM) key
195 Too low a value in reference channel with multiplier 1
131 Too low a value in reference channel with multiplier 5
67 Too low a value in reference channel with multiplier 25
203 Too high a value in reference channel with multiplier 1
139 Too high a value in reference channel with multiplier 5
75 Too high a value in reference channel with multiplier 25
253 No interruptions from the A/D-converter
Example of calculating the checksum of selector switchgroup SGF.
Switch No
SGF/1
SGF/2
SGF/3
SGF/4
SGF/5
SGF/6
SGF/7
SGF/8
Checksum of switchgroup SGF
When the checksum calculated according to the
example equals the checksum indicated on the
display of the relay module, the switches in the
concerned switchgroup are correctly set. An ex-
Position Weighting coefficient
1 x
0 x
1 x
0 x
0 x
0 x
1 x
0 x
a red digit one (1) and a green code number
that indicates the fault type. The fault code
should be recorded and stated when service is
ordered.
The fault codes of the synchro-check relay mod-
ule SPCU 3D45 are explained in the following
table:
1 =
2 =
4 =
8 =
16 =
32 =
64 =
128 =
∑
=
ample of calculating the checksum and detailed
information of keypad operations is contained
in the general description of the D-type SPC
relay modules.
Value
1
0
4
0
0
0
64
0
69