Emerson 51-DO-04, 51-DO-03 Analyzer Mode Priority, Condition Definitions, Action Definitions

Page 46

MODEL DO-03/04

SECTION 5.0

 

SOFTWARE CONFIGURATION

5.12 ANALYZER MODE PRIORITY

The Model 54eA analyzer can function in different modes depending on how it is configured, what process condi- tions exist, and actions an operator may have made. To reconcile these possible modes, there is a set priority that determines exactly what will happen to the two (2) current outputs and the four (4) alarm relays in the event of mul- tiple modes occurring at the same time. See Table 5-2 below.

Priority is in the following order (from lowest to highest): normal, fault, timer, hold, feed limit, test. Each output or relay acts as if it is only in the state of highest priority.

NOTE

Some of these features may not be in use in the analyzer.

TABLE 5-2. Analyzer Mode Priority Chart

 

Condition

Priority

Current

Current

Alarm

Alarm

Alarm

Alarm

 

 

 

Output 1

Output 2

Relay 1

Relay 2

Relay 3

Relay 4

 

 

 

 

 

 

 

 

 

 

 

Normal

1

Normal

Normal

Normal

Normal

Normal

Open

 

 

 

 

 

 

 

 

 

 

 

Fault

2

Default

Default

Default

Default

Default

Closed

 

 

 

 

 

 

 

 

 

 

 

Interval Timer

3

Hold

Hold

Default/

Default/

Default/

Prior

 

 

 

 

 

Normal1

Normal1

Normal1

 

 

 

Hold Mode

4

Hold

Hold

Default

Default

Default

Prior

 

 

 

 

 

 

 

Feed Limit

5

Normal

Normal

Open1

Open1

Open1

Closed

 

 

Simulate tests

6

Test1

Test1

Test1

Test1

Test1

Test1

1Indicates the state IF that item has been configured or selected (i.e. if it is an interval timer or a feed limit timer or it is the one being tested). Unconfigured or unselected items are not affected by that mode.

Condition Definitions:

1.Normal refers to conditions when no other mode is present.

2.Fault means the instrument has diagnosed a fault condition. A fault message is displayed and the red LED is on.

3.Interval Timer means the timer sequence is occurring.

4.Hold Mode occurs when hold is activated by the operator (i.e. during calibration).

5.Feed Limit occurs when a feed limit timer has reached its limit and is turned off after being on for too long.

6.Simulate tests are described in Section 5.4.

Action Definitions:

1.Normal is determined by process conditions or how the item has been configured (Section 5.6)

2.Open is a deenergized alarm relay (alarm off).

3.Default is the setting configured for each item if there is a fault. (Section 5.6)

4.Closed is an energized alarm relay (alarm on).

5.Hold is the setting for the current output configured in Section 5.5 (fixed mA value or the last normal value).

6.Prior is the state the alarm had before that mode occurred.

7.Test is the value input by the operator (mA for current, on or off for a relay).

40

Image 46
Contents Dissolved Oxygen Measurement System with Air Blast Cleaner Model DO-03/04Essential Instructions Page Model DO-03/04 Measuring System Section Title10.0 List of Tables11.0 Section Title List of FiguresIii Section Specifications Features and BenefitsRFI/EMI EN-61326 PowerRepeatability ±0.05 ppm 25C Output Accuracy ± 0.05 mAMaximum distance between compressor and sensor Maximum continuous pressure 50 psig 446 kPa absMaterials of Construction Analyzer dimensions Enclosure dimensions Description Power required selection9240048-00 Tag, stainless steel, specify marking Unpacking and Inspection Section InstallationInstallation Model or part number DescriptionInstalling the handrail mounting assembly Installing the air compressor enclosureAssembling the pipe and pipe clamp Attaching the pipe boom to the handrail mounting assembly Installing the sensor in the washer head assemblyAssembling the washer head and pipe boom Attaching the air compressor enclosure to the handrail Installing the sensor in the washer head assembly POWER, ALARM, and Output Wiring Section WiringGeneral 454EPH02 Section Section Wiring the Oxygen Sensor Sensor WiringGeneral Display Alarm StatusSection Display and Operation KEY Functions and ControlSection Software Configuration Menu Tree for the 54eA AnalyzerOn following Main Menu Calibrate See Diagnostic Variable see Program Settings List Choices Factory Settings SetpointsChoices Factory Settings Configure Choices Factory Settings Alarm 2 setpoint Alarm setpointsAlarm 1 setpoint Alarm 3 setpointMA 0.00 ppm 20 mA 20.00 ppm Output 1 12.00 mA Ranging the OutputsSimulated tests Test alarm 1 OpenTest output Measure Oxygen Outputs AlarmsDisplay Meas units ppmTemp units C Output 1 mA Output 2 mA Display contrast Timeout OnLanguage English Display left Display right Out Output 1 control OutputsOutput Measurement Output 1 Control Output 1 SetupRange 4-20 mA Dampen 0 sec Hold Last Value Alarm 1 setup Alarm 2 control ConfigureAlarm 1 control Changing Alarm ParametersAlarm Low Alarm 1 controlAlarm 1 setup Activate ProcessTimeout 3600 sec Alarm FaultFeed limit Disable Alarm 4 setupTimer Disable Timer Time activated Interval 24.0 hr Alarm 4 setup Feed limit timerInterval timer Interval timer setupTemp units C Temperature Compensation and Temperature UnitsTemp comp Auto Temp comp Manual Temp units C60 Hz Noise ReductionBar units mm Hg Bar meas AutoBarometric Pressure Main sensor cal Salinity 0.0 o/ooNoise rejection Main sensor cal Security SecurityCondition Definitions Analyzer Mode PriorityAction Definitions Section Calibration Temperature IntroductionAdjust temp + 025.1 C Temperature CalibrationSection Calibration Dissolved Oxygen Sensor Current as a Function Dissolved Oxygen ConcentrationSensor must be in zero solution Zeroing the SensorStabilizing . . . Wait Calibrating the Sensor in AIRSection Calibrate 8.32 ppm Calibrating the Sensor Against a Standard InstrumentStandardize Zero main sensor Adjust temperatureCalibrate main sensor Calibrating Barometric PressureSection Calibration Current Outputs Trimming the OutputsCleaning the membrane Section MaintenanceReplacement Parts Replacing electrolyte solution and membraneSection Power Fuse Spare PartsReplacement Parts Location Part Number Description AIR Blast Sensor WasherFault message Explanation See Section Section TroubleshootingTroubleshooting When a Fault Message is Showing OverviewCheck sensor zero Temperature error low or highHigh input current Sense line openProblem See Section Troubleshooting When no Fault Message is Showing OxygenZero current is too high Zero reading Is unstable Possible error warning during in-process calibrationBarometric pressure reading is too high or too low Sensor does not respond to changes in oxygen level Process readings are erraticReadings drift Oxygen readings are too lowSimulating Inputs Dissolved Oxygen Troubleshooting not Related to Measurement ProblemsProblem Action Sensor Polarizing Voltage Resistance Expected currentSimulating Temperature Simulating temperatureSection Return of Material GeneralReturn of Materials Request Sensor or Circuit Board onlyWarranty Specifications subject to change without notice