B800-00-880 Issue A
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Edwards and the Edwards logo are trademarks of Edwards Limited.
Maintenance
Note: The Alarm LED error flash sequence is capable of signalling multiple fail conditions. For example, error
flash code sLssLs signifies both error 2 (Controller failed internal configuration and calibration operation)
and error 5 (pump internal measurement system disconnected or damaged).
5.5.3 Decoding system status words
If you are using the serial communications link you will be able to access further information that may be useful for
fault finding. When you send a query to monitor measured motor speed, the pump also returns a System Status Word.
The send command is as follows:
You will receive the following reply, where the first returned number refers to motor rotational speed in revolutions
per second (Hz):
The System Status Word returned is made up of 8 hexadecimal digits. To decode this word, you must convert each
digit into a 4-digit binary number. (Table 25 is provided as an aid.) Follow the example below:
6
sssssL
Serial enable becomes inactive
following a Serial Start command.
Re-activate Serial Enable and send a
Serial Stop command to clear the error
code.
Command ? v 8 5 2cr
Reply =
v 8 5 2spd d d d; h h h h h h h hcr
2 2830022
0 0 1000 1010 0000 1100 0000 0000 1000 1 0
Table 28 - Hexadecimal conversion table
Hexadecimal Binary Decimal
000000
100011
200102
300113
401004
501015
601106
701117
810008
910019
A101010
B101111
C110012
D110113
E111014
F111115
Table 27 - Flashing error codes
Error flash
position
Error flash
code
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