Emerson 644 Specifications Page 33
- Page / 182
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
Rated. / 5. Based on customer reviews
23
Reference Manual
00809-0200-4728, Rev RA
Section 2: Configuration
April 2015
Configuration
2.7.3 Hot Backup configuration
The Hot Backup feature configures the transmitter to automatically use Sensor 2 as the primary
sensor if Sensor 1 fails. With Hot Backup enabled, the primary variable (PV) must either be First
Good or Average. See the “NOTE” directly above for details on using Hot Backup when the PV is
set to Average.
Sensors 1 or 2 can be mapped as the secondary variable (SV), tertiary variable (TV), or
quaternary variable (QV). In the event of a primary variable (Sensor 1) failure, the transmitter
enters Hot Backup mode and Sensor 2 becomes the PV. The 4–20 mA signal is not disrupted,
and a status is available to the control system through HART that Sensor 1 has failed. An LCD
display, if attached, displays the failed sensor status.
While configured to Hot Backup, if Sensor 2 fails but Sensor 1 is still operating properly, the
transmitter continues to report the PV 4–20 mA analog output signal, while a status is available
to the control system through HART that Sensor 2 has failed.
Resetting Hot Backup
In Hot Backup mode, if Sensor 1 does fail and Hot Backup is initiated, the transmitter will not
revert back to Sensor 1 to control the 4–20 mA analog output until the Hot Backup mode is
reset by re-enabling through HART, re-setting it through the LOI or by briefly powering down the
transmitter.
Hot Backup configuration with a Field Communicator
The field communicator will walk you through a method to correctly configure the necessary
elements of the Hot Backup feature.
From the HOME screen, enter the Fast Key sequence.
Hot Backup configuration with AMS Device Manager
1. Right click on the device and select Configure.
2. In the left navigation pane select Manual Setup.
3. On the Diagnostics Tab find the Hot Backup group box.
4. Choose the button Configure Hot Backup or Reset Hot Backup depending on the
desired function and walk through the guided steps.
5. Select Apply when complete.
Hot Backup configuration with LOI
To configure Hot Backup on the LOI, enable the mode and set the PV values. Reference
Figure 2-11 below for where to find these in the menu.
Device Dashboard Fast Keys
2, 1, 5
- Protocol 1
- Rosemount 644 3
- Temperature Transmitter 3
- Title Page 4
- Contents 5
- 6Section 6: Troubleshooting 8
- Reference Manual 10
- Table of Contents 10
- Section 1 Introduction 11
- 1.2 Overview 12
- 1.2.2 Transmitter overview 13
- 1.3 Considerations 14
- 1.4 Return of materials 15
- 1.5 Transmitter security 16
- Section 2 Configuration 17
- 2.3 System readiness 18
- 2.4 Configuration methods 19
- Configuring with an LOI 21
- 2.4.4 Failure mode 22
- 2.5 Verify configuration 23
- 2, 2, 8, 6 26
- 2.6.3 Setting output units 28
- Setting output units with LOI 29
- Communicator 30
- 2, 2, 3, 3 31
- Resetting Hot Backup 33
- 2.8 Configure device outputs 35
- 2.8.2 Damping 36
- 2, 2, 1, 5 2, 2, 1, 6 38
- Configuring tag with LOI 43
- 2.10.1 50/60 Hz filter 44
- 2.10.2 Resetting the device 44
- 2.11 Diagnostics and service 46
- 2, 2, 4, 3, 4 48
- AMS terms 49
- Configure min/max with LOI 50
- Special considerations 53
- Hot Backup 53
- 3.1 Overview 55
- 3.2 Safety messages 55
- 3.3 Considerations 56
- 3.4 Installation procedures 57
- 3.4.1 Set the alarm switch 58
- 3.4.2 Mount the transmitter 59
- 3.4.3 Install the device 60
- 4.1 Overview 67
- 4.2 Safety messages 67
- 4.3.1 Sensor connections 69
- 4.3.2 Power the transmitter 70
- 4.3.3 Ground the transmitter 71
- Shielding recommendations 72
- Option 2 73
- Option 3 73
- Grounded thermocouple inputs 74
- (HART/4–20 75
- Electrical Installation 76
- Figure 4-4. Load Limits 76
- 5.1 Overview 77
- 5.2 Safety messages 77
- 5.3 Calibration overview 78
- 5.4 Sensor input trim 79
- 3, 4, 4, 1 80
- 3, 4, 4, 2 81
- 5.5 Trim the analog output 82
- 3, 4, 5, 1 83
- 3, 4, 5, 2 83
- 5.7 Switching HART Revision 86
- Section 6 Troubleshooting 87
- 6.4 Diagnostic messages 90
- (SIS) Certification 93
- 7.4 Commissioning 94
- 7.5 Configuration 95
- 7.7.1 Proof test 96
- 7.7.2 Partial proof test 96
- 7.8 Specifications 98
- 7.8.3 Product life 99
- A.1 Specifications 101
- A.1.2 Physical 102
- OUNDATION 103
- A.1.3 Performance 104
- Sensor connections 105
- Communication requirements 106
- Power supply 107
- Temperature limits 107
- Turn-on time 108
- External transient protection 108
- Accuracy 108
- Accuracy example 110
- OUNDATION fieldbus 111
- 644H (DIN A Head Mount) 113
- 644 Field Mount 114
- 644 Rail Mount 114
- Sanitary Applications 117
- A.4 Ordering information 118
- 00809-0200-4728, Rev RA 123
- April 2015 123
- 2 NPT 00644-4438-0002 126
- 2 NPT 00644-4438-0102 126
- 2 NPT 00644-4438-0004 126
- 2 NPT 00644-4438-0104 126
- A.4.1 Configuration 127
- A.4.2 Tagging 127
- A.4.3 Considerations 127
- Custom configuration 128
- Head Mount 129
- A.5.2 Physical specifications 130
- Enclosure ratings (644H) 131
- Sanitary housing surface 131
- Load limitations 133
- Configuration 135
- ≤ Ta ≤ +85°C); Type 4X; 137
- 2-14 NPT) enclosure 137
- International 140
- Gas -40 °C ≤ Ta ≤ +65 °C 142
- Dust -40 °C ≤ Ta ≤ +85 °C 142
- T5 -40 °C ≤ Ta ≤ +70 °C 145
- T6 -60 °C ≤ Ta ≤ +40 °C 145
- T5 -60 °C ≤ Ta ≤ +85 °C 145
- Combinations 146
- Additional Certifications 147
- Product Certifications 149
- Sheet 2 of 2 158
- Trees and Fast Keys 165
- D.1 Number entry 173
- D.2 Text entry 174
- 175
- Canceling 176
- D.5 LOI menu tree 177
Related products and manuals for Measuring, testing & control Emerson 644
(92 pages)© 2020, manymanuals.com. All rights reserved. | 1.196 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals