Yokogawa EJX930A - Manual (Page 3)

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IM 01C25R02-01E
3.3.7 Trim Analog Output ..........................................................................3-22
3.3.8 External Switch Mode ......................................................................3-22
3.3.9 CPU Failure Burnout Direction and Hardware Write Protect ..........3-23
3.3.10 Software Write Protection ................................................................3-23
3.3.11 Alarm ................................................................................................3-23
3.3.12 Status Output and Pulse Output ......................................................3-24
3.3.13 Test Output, Simulation, and Squawk ..............................................3-26
3.3.14 Basic Flow Calculation (Basic mode) ..............................................3-29
3.3.15 Burst Mode .......................................................................................3-32
3.3.15.1 In the case of using HART 5 ...........................................3-32
3.3.15.2 In the case of using HART 7 ...........................................3-32
3.3.16 Multidrop Mode ................................................................................3-37
3.3.16.1 In the case of using HART 5 ...........................................3-37
3.3.16.2 In the case of using HART 7 ...........................................3-38
3.3.17 Switching HART Protocol Revision .................................................3-38
4. Diagnostics ............................................................................................... 4-1
4.1 Self-Diagnostics ................................................................................................4-1
4.1.1
Identify Problems by Using the HART Configuration Tool .................4-1
4.1.2 Checking with Integral Indicator .........................................................4-2
4.1.3 Status information available for HART 7 ............................................4-2
4.2 Advanced Diagnostics .....................................................................................4-3
4.2.1
Multi-sensing Process Monitoring ......................................................4-3
4.2.2 Impulse Line Blockage Detection (ILBD) ...........................................4-3
4.2.2.1 Blockage Detection ...........................................................4-6
4.2.2.2 Combination of Reference Result
and Blockage Detection ....................................................4-8
4.2.2.3 Operation Parameters ......................................................4-9
4.2.2.4 Operating Procedure ...................................................... 4-11
4.2.2.5 Alarm and Alert Setting ...................................................4-12
4.2.2.6 Condition Check .............................................................4-14
4.2.2.7 Obtain Reference Values ................................................4-15
4.2.2.8 Capability Test of Blockage Detection Operation ...........4-16
4.2.2.9 Start ILBD Operation ......................................................4-16
4.2.2.10 Tuning .............................................................................4-17
4.2.2.11 Reset of Reference Value ...............................................4-18
4.2.2.12 ILBD Parameter List .......................................................4-19
4.2.3 Heat Trace Monitoring......................................................................4-21
4.2.3.1 Flg Temp Coef Setting ....................................................4-21
4.2.3.2 Out of Temperature Measurement Range ......................4-22
4.2.3.3 Parameter Lists for Heat Trace Monitoring .....................4-22
4.3 Alarms and Countermeasures ......................................................................4-23
5. Parameter Summary ................................................................................ 5-1