B800-00-880 Issue D
Page 74 © Edwards Limited 2013. All rights reserved.
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).
5.5.9 Decoding system status words
If using the serial communications link, additional information, that may be useful for fault finding, can 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:
The reply will be as follows, 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, convert each digit into a
4-digit binary number. (Table 29 is provided as an aid.) Follow the example below:
5 ssssLs Pump internal measurement system
disconnected or damaged.
Cycle the power to the pump and see
whether the error code appears again.
If it does, contact the supplier or
Edwards.
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
22830022
00100010100000110000000000100010
Table 29 - Hexadecimal conversion table
Hexadecimal Binary Decimal
000000
100011
200102
300113
401004
501015
601106
701117
810008
910019
A101010
B101111
C110012
Table 28 - Flashing error codes
Error flash
position
Error flash
code
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