Edwards nEXT85 User Manual

Bit number Status ag Acve ags mean
3 Vent valve closed Vent valve energised / de-energised
according to the valve type opon
4 Start Start command acve
5 Serial enable Serial command acve
6 Standby Standby acve
7 Half full speed Above 50% full rotaonal speed
8 Parallel control mode Exclusive control mode selecon
9 Serial control mode Exclusive control mode selecon
10 Invalid Controller soware Controller internal soware mismatch
11 Controller upload incomplete Controller failed internal conguraon
and calibraon operaon
12 Timer expired Failure to reach or maintain half full
speed within the mer seng value
13 Hardware trip Overspeed or overcurrent trip acvated
14 Thermistor error Pump internal temperature
measurement system disconnected or
damaged
15 Serial control mode interlock Serial enable has become inacve
following a serial Start command
The system status word used in the example above was obtained with the pump at rest. By
decoding the word, we can learn more about the state of the pump.
Table 17
Example decoding of system status words
Bit number Status of bit
(in example)
We can deduce
0 0 The pump has not failed
1 1 The pump is at rest
2 0 Speed is below normal speed
3 0 The vent valve is open
4 0 There is no acve start command
5 1 Serial enable is acve
6 0 Standby is not acve
7 0 Speed is below 50% of full rotaonal speed
8 0 The pump is not in parallel control mode
9 0 The pump is not in serial control mode
10 0 There is no controller internal soware mismatch
11 0 Controller passed internal conguraon and calibraon
operaon
12 0 The mer has not med out
B8G0-00-880A - Troubleshoong
Page 72

Edwards nEXT85 Specifications

General

Brand	Edwards
Model	nEXT85
Category	Water Pump
Language	English