Inverter Warnings And Alarms - Edwards GXS Series Instruction Manual

10.4 Inverter warnings and alarms

The inverters used to drive the dry pump and the booster can also generate warnings
and alarms if problems are encountered. The inverter warning and alarm codes are
displayed by the PDT (if fitted).
The alarm and warning codes are each reported as a 16‑bit word encoded as 4
hexadecimal numbers. The codes are displayed as follows:
1234 5678
Where:
▪ the first 4 digits signify an alarm code
▪ the second 4 digits signify a warning code.
Digits 1‑8 are reported as the hexadecimal digits from 0 to F.
To determine the cause of a warning or alarm you must first decode each hexadecimal
number. 0 indicates that there is no alert for that bit. Normally you will only see the
codes of 1, 2, 4 or 8 for each bit but if two or more events occur in the same bit then
these will be added together.
For example:
5 = 1 + 4 so if code 5 is displayed it means that alerts 1 and 4 are active
B = 1 + 2 + 8 so if code B is displayed it means that alerts 1, 2 and 8 are active.
To decode the inverter warning and alarm codes, refer to
conversion
to Table: Inverter alarm codes
Table 57 Hexadecimal to digital conversion - Bit set combinations
M58800880_H - Fault finding
to convert the hexadecimal digits into the alert combinations and then refer
and
Hexadecimal
F
E
D
C
B
A
9
8
7
6
5
4
3
2
1
Table: Inverter warning
Decimal
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Page 170
Table: Hexadecimal to digital
codes).
Combination
8+4+2+1
8+4+2
8+4+1
8+4
8+2+1
8+2
8+1
8
4+2+1
4+2
4+1
4
2+1
2
1