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Example 1:
the response time starts at t
1
. At t
1
, current reaches the configured saturation limit
of 20.5 mA for the first time. At t
2
, the response time ends. The stop time begins and the interrupt
is triggered. Time t
3
is the configured end of the stop time. At t
3
, the interrupt is immediately
revoked even if the current then drops below the saturation limit again.
Example 2: the duration of the current saturation is shorter than the response time (t
1
, t
2
). In
that case, the device does not go into "fault current" state.
Example 3: the current drops below the lower saturation limit only for a short time. The fault
current is not switched off until after the end of the stop time (t
3
). The direction of fault current
corresponds to the "Saturated interrupt value" setting. The fault current is output in the direction
of current saturation.
Example 4: the current drops below the lower saturation limit only for a short time. The fault
current is not switched off until after the end of the stop time (t
3
). The direction of fault current
corresponds to the "Active upper interrupt value" setting. The upper fault current is outputted
although the direction of current saturation is downward.
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Figure 7-17 Four examples of saturation monitoring
See also
Fault current (Page 118
)
Operating functions through HART
7.21 Diagnostic functions
SITRANS P, DS III series with HART
132 Operating Instructions, 09/2012, A5E00047092-08
- Pressure transmitter 1
- Table of contents 10
- 1.4 Scope of the instructions 12
- 1.5 Checking the consignment 12
- 1.7 Notes on warranty 13
- Safety instructions 15
- 2.2 Use in hazardous areas 16
- 3.2 Application range 20
- 3.3 Structure 21
- 3.4 Nameplate layout 23
- SITRANS P 24
- 3.6 Functional principle 25
- Overview 26
- 3.7 Remote seal 33
- 3.8 SIMATIC PDM 33
- Installing/mounting 35
- 4.1 Basic safety instructions 36
- ① Flameproof joint 37
- 4.1.2 Proper mounting 40
- 4.2 Disassembly 41
- Installation configuration 42
- 4.3.3 Fastening 43
- Requirements 45
- 4.4.2 Installation for level 46
- Assembly on an open container 47
- 4.7 Rotating the display 57
- Connecting 59
- 5.1 Basic safety instructions 60
- Connecting the device 62
- Closing the device 63
- 5.3 Connecting the Han plug 64
- ④ Shrink sleeve 66
- ② Positioning catch 66
- Operation 67
- Basic safety instructions 68
- 6.4 Display 69
- 6.4.2 Units display 70
- 6.4.3 Error display 71
- 6.4.4 Mode display 72
- 6.4.5 Status display 72
- 6.4.6 Overflow range 73
- 6.5 Local operation 74
- Operating functions 75
- 6.5.2 Operation using buttons 76
- Setting start of scale value 81
- Adjusting full scale value 83
- Differences 85
- Blind adjusting 85
- Example of blind adjusting 85
- 6.5.6 Trimming the zero point 89
- 6.5.7 Current transmitter 90
- Releasing key lock 93
- Variable application point 94
- Fixed application point 94
- 6.5.12 Measured value display 96
- 6.5.13 Unit 97
- Condition 101
- Introduction 101
- Fundamental description 101
- See also 101
- 7.2 Process tag data 102
- 7.3.2 Measuring mode selector 103
- 7.3.3 Variable mapper 103
- Description 105
- DV Device variable 106
- MA Start of scale value 106
- ME Full scale value 106
- 7.3.9 Measured value status 112
- UNCERTAIN status 113
- HIGH LIMIT and LOW LIMIT 113
- Change in status 113
- LIMIT are swapped around 115
- 7.3.10 Analog output 116
- Procedure 119
- 7.7 Electrical damping 120
- 7.8 Fast response mode 120
- 7.9 Current sensor 120
- 7.10 Fault current 120
- Lock options 122
- 7.13 Measured value display 123
- 7.15 Bar graph 125
- 7.16 Sensor calibration 125
- Current sensor trim 126
- Factory calibration 127
- Static configuration data 128
- 7.21 Diagnostic functions 130
- &DOLEUDWLRQLQWHUYDO 131
- 6WDELOLW\PRQWK 131
- 3UHVVXUHFXUYH 132
- 8SSHUGUDJLQGLFDWRUSRLQW 132
- /RZHUGUDJLQGLFDWRUSRLQW 132
- 7.21.5 Limit modules 133
- 7.22 Simulation 135
- 7.23 Limit monitor 136
- Functional safety 139
- Operational reliability 141
- 8.2.1 Safety function 142
- 8.2.2 Settings 142
- 8.2.3 Requirements 143
- 8.2.5 Maintenance/Checking 144
- 8.2.6 Safety characteristics 144
- 8.3.1 Safety function 145
- 8.3.2 Requirements 146
- 8.3.3 Settings 147
- 8.3.5 Maintenance/Checking 148
- 8.4 Add-on parts 149
- Commissioning 151
- Requirement 155
- Service and maintenance 161
- 10.2.2 Checking the gaskets 165
- 10.3 Cleaning 166
- Cleaning the enclosure 167
- 10.4 Return procedure 168
- 10.5 Disposal 168
- Technical data 171
- 11.2 Input point 172
- 11.3 Output 179
- 11.4 Measuring accuracy 179
- 11.5 Operating conditions 185
- 11.6 Construction 189
- 11.9 HART communication 196
- Dimension drawings 197
- ① Key cover ⑤ Connection side 204
- 12.4.1 Note 3A and EHDG 205
- Flanges as per ASME 206
- Connections as per DIN 206
- Other connections 208
- BioConnect 208
- connectors 208
- 12.4.4 PMC Style 210
- 12.4.5 Special connections 211
- IDF connectors 212
- Spare parts/accessories 213
- 13.1 Order data 214
- Appendix 217
- A.3 Literature and catalogs 218
- A.5 Technical support 222
- List of abbreviations 223
- B.1 Functional safety 224
- Glossary 225
- Failure/Fault 226
- Frequency shift keying 226
- $( 234
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