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81
Reference Manual
00809-0200-4728, Rev RA
Section 6: Troubleshooting
April 2015
Troubleshooting
6.4.2 Diagnostic messages: Warning
Invalid
Configuration
CONFG
SNSR 1
WARN
ERROR
CONFG
SNSR 1
WARN
ERROR
The Sensor Configuration
(type and/or connection)
does not match the sensor
output and is invalid.
1. Verify sensor type and number of wires
matched the Sensor Configuration of the
device.
2. Reset the device.
3. If error persists, download the
transmitter configuration.
4. If error still present, replace the
transmitter.
Field Device
Malfunction
ALARM
DEVICE
ALARM
FAIL
ALARM
DEVICE
ALARM
FAIL
The device has
malfunctioned or needs
immediate attention.
1. Perform a processor reset.
2. View other alerts to see if the
transmitter indicates a specific problem.
3. If the condition persists, replace the
device.
(1) Sensor 1 is used here as an example. If Dual Sensors are ordered this alert can apply to either sensor.
Alert name LCD screen LOI screen Problem Recommended action
Hot Backup
™
Active
HOT BU
SNSR 1
HOT BU
FAIL
HOT BU
SNSR 1
HOT BU
FAIL
Sensor 1 has failed (open or
shorted) and Sensor 2 is
now the primary process
variable output.
1. Replace Sensor 1 at you earliest
convenience.
2. Reset Hot Backup feature in the device
software.
Sensor Drift
Alert Active
(1)
WARN
DRIFT
WARN
ALERT
WARN
DRIFT
WARN
ALERT
The difference between
Sensor 1 and 2 has gone
beyond the user-configured
Drift Alert Threshold.
1. Verify sensor connections are valid on
the transmitter.
2. If necessary, check calibration of each
sensor.
3. Verify process conditions match
sensor outputs.
4. If calibration fails, one of the sensors
has failed. Replace it at your earliest
convenience.
Sensor
Degraded
(1)
WARN
SNSR 1
DEGRA
SNSR 1
WARN
SNSR 1
DEGRA
SNSR 1
The resistance of the
thermocouple loop has
exceeded the configured
threshold. This could be
caused by excess EMF.
1. Check terminal connections on the
644 terminal screws for corrosion.
2. Check the thermocouple loop for any
signs of corrosion in terminal blocks,
wire thinning, wire breaks, or faulty
connections.
3. Verify the integrity of the sensor itself.
Harsh process conditions may cause
long-term sensor failures.
Table 6-2. Status: Failed – Fix Now
Alert name LCD screen LOI screen Problem Recommended action
- 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
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