Edwards nRVi, Instruction Manual

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Figure 7 Valve connector showing pin numbers
Pin number Signal Polarity Colour
1 Valve control output Positive Brown
2 Not used n/a n/a
3 Return Negative Blue
4 Not used n/a n/a
3.10 Indicator LEDs
Table 18
Indicator LEDs
LED Description
Service indicator LED If a service is due, this LED flashes in a sequence to
indicate which service operation is required. Refer to
Service indicator codes on page 70 .
Alarm indicator LED This red LED flashes in a sequence to indicate an error
code if a FAIL condition is preventing pump operation.
The error codes can be used for fault finding as described
in Alarm indicator codes on page 76 .
3.11 Serial protocol
The serial interface link is set to 9600 Baud, 8 bits, 1 stop, no parity with no
handshaking. The commands are made up from printable ASCII characters. The
maximum message size that can be sent is 80 characters, including start and end
characters.
Note:
All alphabetical characters must be sent in upper case format. The response may contain
lower case characters.
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A65901880_D - Technical data