Edwards nEXT730 - Decoding System Status Words

B8J200880_E - Fault finding
Page 116
Table 29 Flashing inactivity service codes
Inactivity service flash
code
Comments
Actions
LED on 0.25s
LED off 0.75s
Bearing conditioning
recommended
The pump has been stored or has not been run
for more than a year. It is recommended that the
bearing conditioning is performed.
LED on 0.25s
LED off 0.25s
Bearing service recom-
mended
The pump has been stored or has not been run
for more than 3 years. It is recommended that
the bearing is replaced.
11.5 Decoding system status words
When using the serial communications link, additional information that may be useful
for fault finding is available to be accessed. When sending a query to monitor measured
motor speed, the pump also returns a System Status Word.
The send command is as follows:
Command
?
v
8
5
2
cr
The reply will be as follows, where the first returned number refers to motor rotational
speed in revolutions per second (Hz) and the second part is the system status word::
Reply
=
v
8
5
2
sp
d
d
d
d
;
h
h
h
h
h
h
h
h
cr
The System Status Word returned is made up of 8 hexadecimal digits. To decode this
word, convert each digit into a 4‑digit binary number. Follow the example below:
2
2
8
3
0
0
2
2
V V V V V V V V
0
0
1
0
0
0
1
0
1
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
0
is provided as an aid.
Table 30 Hexadecimal conversion table
Hexadecimal
Binary
Decimal
0
0000
0
1
0001
1
2
0010
2
3
0011
3
4
0100
4
5
0101
5
6
0110
6
7
0111
7
8
1000
8
9
1001
9
A
1010
10
B
1011
11