Emerson Process Management 53eA instruction manual Hold setup, Using hold

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MODEL 54eA	SECTION 5.0
	SOFTWARE CONFIGURATION

5.6 CHANGING OUTPUT PARAMETERS (continued)

Output 2 control Output 2 setup Hold feature setup

ExitEnter

Proportional: Proportional is the same as proportional band and is the range over which control is being used. It is the opposite of process gain. Smaller values provide tighter control.

Integral: Integral is the number of seconds over which devia- tions from the setpoint are integrated to remove continuing off- sets. Smaller values provide higher response.

Derivative: Derivative is a form of control that resists all changes in readings. Higher readings increase the derivative function. To prevent process oscillation, use caution in setting the derivative value.

Range: Choose 4-20 mA or 0-20 mA.

For an explanation of Hold, Fixed Hold, and Fault, see step 8b above.

For allowed values, see Table 5-1.

For more information using PID control, see Section 13.0.

10.Hold setup.

a.Move the cursor to "Hold feature setup" and press Enter (F4).

b.Press Edit (F4). Use the é to scroll through the choices: "Disable feature", "Enable feature", and "20 min timeout". If "20 min time- out" is selected, hold mode will automatically disengage after being on for 20 minutes.

NOTE

Selecting "Enable hold" or "20-min timeout" does not put the controller in hold. It only allows the user to put the controller in hold when the controller is in calibrate mode.

11.Using hold.

If hold was enabled in step 10 above, the hold screen will appear as soon as the user enters the Calibrate menu. To activate Hold, press Edit (F4). Use the é key to change Off to On and press Save (F4). "Hold Mode Activated" will be displayed. Outputs and relays will go to the values programmed in step 8b.

"Hold Mode Activated" will continue to flash in the main display even after the user has left the Calibrate menu. To deactivate hold, enter the Calibrate menu and press Edit (F4). Use the é key to change On to Off and press Save (F4). Press Exit (F1) twice to return to the main display.

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Contents Model 54eA Amperometric Hart Analyzer/ControllerEssential Instructions Page Model 54eA ANALYZER/CONTROLLER 12.0 10.011.0 13.0Iii List of FiguresSection Title Section Specifications Features and ApplicationsOutput Accuracy ± 0.05 mA Alarms Specifications GeneralPower Weight/Shipping Weight 5 lb/6 lb 2 kg/2.5 kgSpecifications Total Chlorine Specifications OxygenSpecifications Free Chlorine Specifications Ozone24 VDC 115/230 VAC, 50/60 Hz PowerOrdering Information Unpacking and Inspection Section InstallationInstallation Pipe and Wall Mounting Dimensions Pipe mountingPanel Mounting Dimensions Panel mountingGeneral Section WiringPOWER, ALARM, and Output Wiring 454EPH02 General Sensor WiringWiring Model 499A oxygen, chlorine, and ozone sensors 4054eA01 4054eA03 4054eA02 4054eA04 4054eA07 General Description Alarm StatusSection Display and Operation DisplaySection Software Configuration Program Settings ListChoices Factory Settings Configure Choices Factory Settings Temperature compensation Section Menu Tree for the 54eA Controller Main Menu Main Alarm setpoints Alarm 2 setpointMA 0.00 ppm 20 mA 20.00 ppm Output 1 12.00 mA Ranging the OutputsSimulated test Alarm setpointsOutput setpoints Setpoint 1.000 ppm 4mA 0.000 ppm 20mA 10.00 ppmTest output Test alarm 1 OpenSimulated tests Configure DisplayLanguage English Display left Display right Out Display contrast Timeout OnTemp units C Output 1 mA Output 2 mA Output Measurement OutputsOutput 1 control Output 1 Control Ctrl mode NormalOutput 1 Setup Range 4-20 mA Dampen 0 sec Hold Last ValueHold setup Using holdChanges in the alarm setup Changing Alarm ParametersAlways configure the control parameters Before making Alarm Control SettingsAlarm 2 control Alarm 1 controlAlarm 1 setup Alarm Low Setpoint 0.000 ppmLow Alarm High AlarmTimeout 3600 sec Alarm FaultFeed limit Disable Feed limit timer setupTimer Disable Timer Time activated Interval 24.0 hr Alarm 4 setup Feed limit timerInterval timer Interval timer setupUsing the 499ACL-01 sensor PH sensor EnablePH sensor Disable PH comp Manual PH value 7.00 pHAutocal Standard Diagnostics OffGlass imp lo 20 MΩ Temp coeff Operate iso 7.00 pH Sensor iso 7.00 pHTemp units C Temperature Compensation and Temperature UnitsTemp comp Auto Temp comp Manual Temp units C60 Hz Noise ReductionMain sensor cal Barometric Pressure Bar meas AutoBar units mm Hg Security Lock program Lock configNoise rejection Main sensor cal Lock allAction Definitions Controller Mode PriorityCondition Definitions Section Calibration Temperature IntroductionAdjust temp + 025.1 C Temperature CalibrationSection Calibration Dissolved Oxygen 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 Free Chlorine 499ACL-01 Sensor Current as a Function of Free Chlorine ConcentrationCalibrate main sensor Calibrate 1.100 ppm Full Scale CalibrationCalibrate low point Dual range calOutput trim Dual Slope CalibrationLow point 2.000 ppm Calibrate high pointSection Calibration Free Chlorine 498CL-01 IntroductionPpm 100ppm 000 ppm Section Calibration Free Chlorine 498CL-01 Section Calibration Total Chlorine This page intentionally left blank Section Calibration Monochloramine Sensor Current as a Function of Monochloramine ConcentrationPpm 100ppm Section Calibration Ozone Sensor Current as a Function of Ozone ConcentrationPpm 100ppm Section PH at 25C Standards Nominal pHAutocal buffer Automatic TWO-POINT Calibration10.02 pH Manual TWO-POINT Calibration Calibrate pointPt 04.00pH 25C 10.01 pH Pt 4.00pH 25.0CStandardization ONE-POINT Calibration Pt calibration Standardize pH pH slopePH slope 60.00 mV/pH Section Calibration Current Outputs Trimming the OutputsSection PID and TPC Control PID Control CodeProcess Reaction Curve Method Proportional Gain Plus Integral ResetControl Loop Adjustment and Tuning Process Reaction Curve Section Time Proportional Control TPC Mode Code Fault message Explanation See Section Section TroubleshootingTroubleshooting When a Fault Message is Showing OverviewCheck sensor zero Temperature error low or highHigh input current PH low or high input voltageSense line open Troubleshooting When no Fault Message is Showing OxygenProblem See Section Failure factory and Failure eepromZero reading Is unstable Possible error warning during in-process calibrationZero current is too high Readings drift Barometric pressure reading is too high or too lowProcess readings are erratic Sensor does not respond to changes in oxygen levelProblem Zero current is unstableSensor can be calibrated, but the current is too low Sensor does not respond to changes in chlorine level Chlorine readings are too lowProblem See Section Sensor does not respond to changes in monochloramine level Readings are too low Troubleshooting When no Fault Message is Showing Ozone Sensor does not respond to changes in ozone level Ozone readings are too lowTroubleshooting When no Fault Message is Showing pH 100 Controller will not accept manual slopeSensor does not respond to known pH changes Process pH readings are noisy 101Simulating Inputs Dissolved Oxygen Troubleshooting not Related to Measurement ProblemsProblem Action Sensor Polarizing Voltage Resistance Expected currentSimulating Inputs Other Amperometric Measurements Simulate Chlorine and Ozone 103104 Simulating pH input when the preamplifier is in the sensorVoltage mV PH at 25C 105 Simulating TemperatureSimulating temperature Measuring Reference Voltage 106Section Maintenance Replacement Parts Part Number DescriptionSection Return of Material GeneralWarranty Specifications subject to change without notice