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nEXT85
Edwards nEXT85 User Manual
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Figure 4
Motor con
troller s
tatus
informaon
1.
Normal LED
2.
Status LED
3.
Alarm LED
4.
Accessory connector
5.
Serial receive LED
6.
Serial transmit LED
7.
Standby speed incr
ease
buon
8.
RS232/R
S485 slide switch
9.
USB connector
10.
Standby speed decr
ease
buon
Figure 5
Logic interf
ace
connecons
- RS232 serial contr
ol
1.
RS232 int
erf
ace on contr
ol equipment
2.
24-48 V d.c. electrical supply
3.
Fuse
4.
nEXT pump logic interf
ace
B8G0-00-880A - Install the nEXT85
Pag
e 30
29
31
Table of Contents
Copyright Notice
2
Trademark Credits
2
Declaration of Conformity
3
Table of Contents
5
List of Figures
9
List of Tables
10
Safety and Compliance
11
Definition of Warnings and Cautions
11
Safety Symbols
11
Overview of the Next85
12
Motor Controller
13
Operational Features
13
Power Limit Setting
14
Standby Speed
14
Timer
14
Analogue Output
14
Automatic Vent Options
15
Normal Speed Setting
15
Electronic Braking
15
Logic Interface
16
USB Interface
16
Parallel Control and Monitoring
16
Serial Control and Monitoring
17
Serial Control with Parallel Monitoring
17
Parallel Control with Serial Monitoring or Serial Configuration
17
Motor Controller Configuration (Serial Configuration)
18
Install the Next85
19
Unpack and Inspect
19
Table 1 Checklist of Items
19
Connect to the Vacuum System
20
Figure 1 Typical Pumping System with a Next Pump
20
Remove and Replace the Inlet Screen
21
Mount the Pump
22
Backing Port Connection
24
Figure 2 Allowable Pump Orientation
24
Interstage Connection
25
Purge Gas Connection
25
Recommended Purge Gas Flow
25
Connect the Purge Gas
25
Electrical Installation of the Next85
25
Earth (Ground) Connections
26
TIC or TAG Logic Interface Connections
26
Connect the Logic Interface to Control Equipment
26
Connect the Parallel Control and Monitoring
27
Connection for Serial Control and Monitoring
28
Figure 3 Logic Interface Connections - Parallel Control
28
Connect the Serial Interface to the Customer Control Equipment
29
Figure 4 Motor Controller Status Information
30
Figure 5 Logic Interface Connections - RS232 Serial Control
30
Serial Enable
31
Connection for Mixed Parallel and Serial Operation
31
Figure 6 Logic Interface Connections - RS485 Serial Control
31
Cooling
32
Cooling Requirements
32
Figure 7 Logic Interface Connection - Mixed Parallel and Serial Operation
32
Forced Air Cooling
33
Water Cooling
33
Table 2 Water Cooling Block Supply Requirements
34
Configuration
35
Configure the Pump Using Serial Commands
35
Message Structure
36
Command and Reply Table Definitions
36
Table 3 Command Abbreviations
36
Power Limit Setting
37
Powering a Fan from the Motor Controller
37
Table 4 Power Limit Setting
37
Controlled Venting Options
38
Standby Speed Setting
39
Normal Speed Setting
39
Timer Setting and Options
40
Analogue Signal Options
41
Electronic Braking Options
41
Table 5 Analogue Signal Options
41
Factory Settings
42
Assigning a Multi-Drop Address
42
Configure the Pump Using a TIC
43
Operation of the Next85
44
Before Starting the Pump
44
Close the Vent Valve
44
Pre-Start Sequence
44
Vent Options, Vent Valve Connection and Control
44
Manual Vent Valve
45
TAV5 Solenoid Vent Valve
45
Vent Valve Control
45
Table 6 Vent Valve Options
46
Figure 8 Auxiliary Interface Connection
47
Table 7 Valve Types
47
Alternative Valve Connected to the Vacuum System
48
Operation with Parallel Control and Monitoring
48
Start the Pump with Parallel Control
48
Table 8 Vent Restrictor Orifice Diameter if Venting the Vacuum System Chamber
48
Run the Pump at Standby Speed with Parallel Control
49
Stop the Pump with Parallel Monitoring
49
Parallel Monitoring
49
Operation with Serial Control and Monitoring
49
Delayed Start with Serial Control
49
Start the Pump with Serial Control
50
Run the Pump at Standby Speed with Serial Control
50
Stop the Pump with Serial Control
51
Monitor Temperature Readings with Serial Control
51
Monitor Link Parameter Readings with Serial Control
51
Monitor Measured Motor Speed with Serial Control
51
Mixed Parallel and Serial Operation
52
Table 9 Serial Enable Matrix
52
Operation with a TIC or TAG
53
Decelerating and Venting
53
Figure 9 Serial and Parallel Control Flowchart
53
Operation at Extreme Conditions
54
Operation with High Inlet Pressure
54
Operation at High Temperatures
54
Protection against Over-Speed
54
Electrical Supply Failure
55
Bakeout
56
Table 10 Behaviour of a Pump When the Power Is Re-Instated after an Electrical Supply Failure
56
Shut down the Pump Manually
57
Maintain the Next85
58
Bearing and Oil Cartridge Maintenance
59
Rotor Life
59
Cleaning the Pump
59
Decoding Service Status Words
59
Controller Run Time
60
Table 11 Service Flags
60
Pump Run Time
61
Pump Cycles
61
Bearing Run Time
61
Oil Cartridge Run Time
61
Storage
63
Disposal
64
Troubleshooting
65
The Controller Leds Do Not Flash for 0.5 Seconds When System Switched on
65
The Pump Does Not Rotate after a Parallel Start Command Is Supplied
65
The Pump Does Not Rotate after a Serial Start Command Is Sent
65
The Pump Does Not Respond in Multi- Drop Mode
66
The Green Normal LED Does Not Light or the Pump Is Not Rotating at Full Speed or the Pump Fails Whilst Running
66
Ultimate Pressure Cannot be Reached
66
The Pump Is very Noisy or There Is Excessive Vibration or both
67
No Serial Comms
67
Fail Signal or Standby Signal Not Working
67
Yellow Service LED Is Flashing a Repeated Sequence
67
The Red Alarm LED Is on
68
The Red Alarm LED Is Flashing
68
Any Other Problems
68
Command Set Error Codes
68
Table 12 Command Set Error Codes
68
Flashing Service Codes
69
Flashing Error Codes
69
Table 13 Flashing Service Codes
69
Table 14 Flashing Error Codes
69
Decoding System Status Words
70
Table 15 Hexadecimal Conversion Table
71
Table 16 Status Flag
71
Table 17 Example Decoding of System Status Words
72
Service Information
73
Service
74
Returning a Pump for Service
74
Bearing and Oil Cartridge On-Site Maintenance
74
Table 18 Service Tool Kits
75
Table 19 Service Kits
75
Spares
76
Inlet Screen
76
Inlet Strainer
76
Inlet Flange Seals and Integrated Inlet Screens
76
Table 20: Inlet Screens
76
Table 21 Inlet Strainers
76
Table 22: Inlet Flange Seals and Integrated Inlet Screens
76
NW16 and NW25 Ports
77
Table 23 Inlet Strainers
77
Accessories for the Next85
78
Air Cooler
79
Water Cooler
79
Figure 10 Accessories
79
Table 24 Air Cooler
79
Bakeout (Heater) Band
80
TAV5 Vent Valve
80
Table 25 Water Cooler
80
Table 26 Bakeout Band
80
Table 27 TAV5 Vent Valve and Vent Port Adaptor
80
VRX Vent Restrictor
81
Vent Port Adaptor
81
PRX Purge Restrictor
81
Interface Cable
81
Table 28 VRX Vent Restrictor
81
Table 29 Vent Port Adaptor
81
Table 30 PRX Purge Restrictor
81
Table 31 Interface Cable
81
Nst PC Program
82
Auxiliary Connector
82
Auxiliary Extension Cable
82
Table 32 Auxiliary Connector
82
Table 33 Auxiliary Extension Cable
82
Auxiliary 'Y' Cable Adaptor
83
Base Mounting Adaptor
83
Table 34 Auxiliary 'Y' Cable Adaptor
83
Table 35 Base Mounting Adaptor
83
Technical Reference
84
Operating and Storage Conditions
84
General Technical Data
84
Figure 11 Dimensions - Next85 ISO63
84
Table 36 Operating and Storage Conditions
84
Table 37 General Technical Data
84
Figure 12 Dimensions - Next85 CF63
85
Figure 13 Dimensions - Next85 ISO100
85
Figure 14 Dimensions - Next85 DN40
85
Pump Performance Data
86
Table 38 Pump Performance Data
86
Table 39 Critical Backing Pressure
86
Pumped Media
87
Venting Gas Specification and Vent Control Data
89
Materials Exposed to Gases Pumped
89
Figure 15: Max Allowed Rate of Pressure Rise During Venting: Pressure against Time (Pump Initially at Full Speed)
89
Table 40 Vent Gas Specification and Vent Control
89
Purge Gas Specification
90
Water Cooling
90
Table 41 Purge Gas Specification
90
Table 42 Water Cooling Block Supply Requirements
90
Electrical Data
91
Logic Interface Connector
91
Figure 16 Maximum Relative Humidity to Avoid Condensation with Water Cooling
91
Table 43 Logic Interface Technical Data
91
Table 44 Logic Interface Connector Pins
93
Serial Protocol
94
Figure 17 Interface Circuits for Next Turbo Pump Controllers
94
Command Set
95
Table 45 Summary of Commands that Can be Sent to the Pump
95
Table 46: Summary of Commands that Can be Sent to the Pump - Vent Options 1
98
Multi-Drop Operation
99
Table 47: Summary of Commands that Can be Sent to the Pump - Vent Options 2
99
Figure 18 Conceptual Diagram for Multi-Drop Connection Using RS232 Interface
100
Motor Controller Auxiliary Connector Socket
101
Figure 19 RS485 Multi-Drop Connection
101
Table 48 Motor Controller Technical Data
101
Indicator Leds
102
Figure 20 Motor Controller Connector Showing Pin Numbers
102
Table 49 Indicator Leds
102
Definitions
103
Figure 21 HS1 Form
104
Figure 22 HS2 Form
105
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Original Instructions
28 pages
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Edwards nEXT85 Specifications
General
Brand
Edwards
Model
nEXT85
Category
Water Pump
Language
English
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