Edwards nEXT85 - Definitions

LED Descripon
Alarm LED This red LED ashes in a sequence to indicate an error
code if a FAIL condion is prevenng pump operaon.
The error codes can be used for fault nding as
described in Troubleshoong on page 65. This LED is
duplicated on both sides of the pump.
Serial Communicaons Receive (Rx)
LED
This yellow LED ashes briey whenever acvity is
detected on the serial link receive line and can be
used for fault nding the serial link.
Serial Communicaons Transmit (Tx)
LED
This yellow LED ashes briey whenever the motor
controller is transming data on the serial link
transmit line and can be used for fault nding the
serial link.
Note:
If an external electrical load is connected to the Normal output line, the normal LED may
illuminate.
Denions
The units used throughout this manual conform to the SI internaonal system of units of
measurement. Also throughout this manual, wherever ow rates are specied, the
abbreviaon 'sccm' is used to mean standard cm
3
min
-1
: this is a ow of 1 cm
3
min
-1
at an
ambient temperature of 0 °C and a pressure of 1013 mbar (1.013 x 10
5
Pa).
B8G0-00-880A - Technical Reference
Page 103