B800-00-880 Issue D
Page iv © Edwards Limited 2013. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Contents
9 Controller connector showing pin numbers .........................................................................27
10 Typical pumping system with a nEXT pump ........................................................................30
11 Logic interface connections - parallel control .....................................................................35
12 Controller status information ......................................................................................... 37
13 Logic interface connections - RS232 serial control ................................................................38
14 Logic interface connections - RS485 serial control ................................................................38
15 Conceptual diagram for multi-drop connection using RS232 interface ......................................... 40
16 RS485 multi-drop connection .........................................................................................41
17 Logic interface connection - mixed parallel and serial operation .............................................. 45
18 Maximum relative humidity to avoid condensation with water cooling ........................................50
19 Serial and parallel control flowchart ................................................................................62
20 nEXT exploded accessories view .....................................................................................84
21 nEXT exploded accessories view .....................................................................................85
Tables
Table Page
1 Power limits .............................................................................................................. 3
2 General data .............................................................................................................. 9
3 nEXT 240 pumps technical data ......................................................................................10
4 nEXT 300 pumps technical data ......................................................................................11
5 nEXT 400 pumps technical data ......................................................................................12
6 nEXT pumps technical data ...........................................................................................13
7 Vent gas specification and vent control .............................................................................22
8 Purge gas specification ................................................................................................23
9 Cooling water specification ...........................................................................................23
10 Logic interface technical data ........................................................................................24
11 Logic interface connector pins .......................................................................................25
12 Controller technical data ..............................................................................................27
13 Indicator LED’s ..........................................................................................................28
14 Operating and storage environment .................................................................................28
15 Checklist of components ...............................................................................................29
16 Summary of commands that can be sent to the nEXT pump ..................................................... 42
17 Command abbreviations ...............................................................................................43
18 Error codes ...............................................................................................................44
19 Vent options .............................................................................................................48
20 Vent restrictor orifice diameter (with atmospheric pressure at the inlet of the vent valve) ..............48
21 Power limit setting .....................................................................................................51
22 Analogue signal options ................................................................................................55
23 Serial enable matrix ....................................................................................................61
24 Behaviour of a pump when the power is re-instated after an electrical supply failure ..................... 64
25 Fault finding .............................................................................................................68
26 Flashing service codes .................................................................................................71
27 Service flags .............................................................................................................71
28 Flashing error codes ....................................................................................................73
29 Hexadecimal conversion table ........................................................................................74
30 Status flag ................................................................................................................75
31 Example decoding of system status words ..........................................................................76
32 Service tool kits .........................................................................................................79
33 Service kits ..............................................................................................................80
34 Inlet screens .............................................................................................................80
35 Inlet strainers ...........................................................................................................80
36 Inlet flange seals and integrated inlet screens ....................................................................80
37 NW16 and NW25 ports ..................................................................................................81
38 ACX air cooler ...........................................................................................................81
39 WCX water cooler .......................................................................................................81
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