Edwards nEXT730D User Manual

Binary digits
0 0 1 0 0 0 1 0 1 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0
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3
1
3
0
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1
9
1
8
1
7
1
6
1
5
1
4
1
3
1
2
1
1
1
0
9 8 7 6 5 4 3 2 1 0
Bit numbers
Table 31 Status ags
Bit number
Status ag Acve ags means
0 Fail Fail status condion acve
1 Stopped speed Below stopped speed
2 Normal speed Above normal speed
3 Vent valve closed Vent valve energised
4 Start Start command acve
5 Serial enable Serial enable 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 follow-
ing 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 32
Example decoding of system status words
Bit num-
ber
Status of bit (in example)
Indicaon
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
08/2021 - ©Edwards Limited
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B8J200880_D - Fault nding

Edwards nEXT730D Specifications

General

Brand	Edwards
Model	nEXT730D
Category	Water Pump
Language	English