Edwards nEXT200200 - Decoding System Status Words

Error ash
posion
Error ash
c
ode
Comments Acons
2 sLssss
Controller failed internal
conguraon and calibraon
operaon
Restart the system. If the
error code is not cleared,
contact us or the supplier.
3 ssLsss
Failure to reach or maintain
half full speed in the mer
seng value
Check if the pump is too hot
or if the inlet pressure is too
high.
4 sssLss
Overspeed or overcurrent trip
is acvated, or other
hardware fault
Restart the system. If the
error code is not cleared,
contact us or the supplier.
5 ssssLs
Pump internal measurement
s
ystem is disconnected or
damaged
Restart the system. If the
error code is not cleared,
contact us or the supplier.
6 sssssL
Serial enable becomes
inacve aer a serial start
command
Acvate the Serial Enable
again and send a Serial Stop
command to clear the error
code.
Note:
The alarm LED error ash sequenc
e can signal mulple fail condions. For example, error
ash code sLssLs signies error 2 (controller failed internal conguraon and calibraon
operaon) and error 5 (pump internal measurement system disconnected or damaged).
8.9 Decoding system status words
When you use the serial communicaons link, addional informaon that can be useful for the fault
nding can accessed. When sending a query to monitor measured motor speed, the pump also returns
a System Status Word.
The send command that follows:
Command ? V 8 5 2 cr
The reply is as follows (where, r
st returned number refers to motor rotaonal speed in
revoluons per second (Hz)):
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. Example:
2 2 8 3 0 0 2 2
ê ê ê ê ê ê ê ê
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
Refer to T
able: Hexadecimal conversion table on page 83 for more informaon.
Table 26
Hexadecimal conversion table
Hexadecimal Binary Decimal
0 0000 0
Page 83
B85200880_D - Fault nding