Emerson PN 51-1055pHC/rev.K Alarm Relays Must be Configured Before Assigning Setpoints

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MODEL SOLU COMP II

SECTION 5.0

 

PROGRAMMING THE ANALYZER

5.4 CONFIGURING ALARMS AND ASSIGNING SETPOINTS

5.4.1 Purpose

This section describes how to do the following:

1.assign an alarm relay to a sensor,

2.set the alarm logic to high or low,

3.assign values to the alarm setpoints,

4.set the alarm deadbands.

ALARM RELAYS MUST BE CONFIGURED BEFORE ASSIGNING SETPOINTS.

5.4.2 Definitions

1.ASSIGNING ALARMS. There are three alarms (AL1, AL2, and AL3). Alarms 1 and 2 can be assigned to any sensor. For example, AL1 and AL2 can be assigned to sensor 1 with, perhaps, one alarm configured as a high alarm and the other as a low alarm, and AL3 can be assigned to sensor 2. Alarm 3 can be assigned to either sensor or used as a fault alarm. The fault alarm activates when a fault exists in a sensor or the analyzer.

2.FAULT ALARM. A fault condition exists when the Solu Comp II detects a problem with a sensor or with the ana- lyzer that is likely to cause seriously erroneous readings. If Alarm 3 was programmed as a fault alarm, the alarm 3 relay will activate. The word Fault will appear alternately in the display with the reading.

3.ALARM LOGIC, SETPOINTS, AND DEADBANDS. See Figures 5-2 and 5-3.

FIGURE 5-2. High Alarm Logic

The alarm activates when the pH exceeds the high setpoint. The alarm remains activated until the reading drops below the value determined by the deadband.

FIGURE 5-3. Low Alarm Logic

The alarm activates when the conductivity drops below the low setpoint. The alarm remains activated until the reading increases above the value determined by the deadband.

Alarm relays are single pole-double throw (SPDT). When an alarm is activated, the coil is energized.

When an alarm activates, AL1, AL2, or AL3 (as appropriate) appears periodically in the display.

4.USP 24 ALARM. Any alarm, if assigned to sensor 2 (conductivity) can be configured as a USP 24 alarm. A USP 24 alarm activates when the non-temperature-corrected conductivity (raw conductivity) of the water is

within a user-selectable percentage (safety range) of the USP 24 limit. For example, at 40°C the USP 24 limit is 1.7 µS/cm. If the safety range is 10%, the USP 24 alarm activates when the raw conductivity exceeds 1.7 - (0.1 x 1.7) or 1.53 µS/cm.

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Contents Model Solu Comp Essential Instructions Quick Start Guide ORP Quick Reference Guide Model Solu Comp List of Tables Table of Contents CONT’DIii List of FiguresAbout This Document Section Description and Specifications Ordinary Location -68 only DimensionsTerminal Connections Rating 26-14 AWG wire size Hazardous LocationRange, µS/cm Cell constant, /cm Performance SpecificationsAnalyzer Conductivity Input Recommended Sensors for ConductivityMeasurement Range see table below Toroidal Conductivity Codes -21 and/orRecommended Sensors for ORP Performance Specifications Analyzer ORP InputTemperature Correction none required When used with conductivity -20-32 orFrequency Range 0.5 4000 Hz Recommended SensorsRepeatability ±1% Measurement Range 0-10 ppm mg/L Loop Specifications with a Model 499A OZ SensorRecommended Sensor Input filter 1- 255 samplesModel 1055 Solu Comp II Analyzer Ordering InformationCombination Guide Part Number Description Weight General Information Section InstallationInstallation Unpacking and InspectionPanel Mounting Panel Mount InstallationPipe Mounting Pipe Mount InstallationSurface Mounting Surface Mount InstallationPOWER, ALARM, OUTPUT, and Sensor Connections Section WiringPreparing Conduit Openings Model Solu Comp Section Wiring Model Solu Comp Section Wiring 41055105 41055106 41055107 41055108 41055109 41055110 40105536 40105559 Display Section Display and OperationKeypad Programming and Calibrating the Solu Comp II Tutorial Security Using HoldSection Programming the Analyzer Sensors Output Section Default SettingsOutput Dampening Or 4 mA Mode Section Alarm SectionDefault Settings Assigning Outputs 1 DefinitionsChoose Output Range. Choose Output1 or Output2 Choose Output ConfigureChoose Output1 or Output2 Choose 4-20 mA or 0-20 mAAlarm Relays Must be Configured Before Assigning Setpoints Choose Measurement or Temp Choose Alarm ConfigureChoose Alarm Setpoints Definitions pH/ORP Definitions conductivity/resistivity Choose Soln Temp Corr or Sensor Isoptntl Choose MeasurementDefinitions pH OutputsAlarms Measurement Choose Noise Rejection Choose ResetAnalyzer Procedure Choosing a Language Choose Default DisplayProcedure Changing Screen Contrast Introduction Section CalibrationCalibrating Temperature Procedure Calibration Slope and Offset PH at 25C Standards Nominal pHEnter Choose Measurement Choose BufferCalManual Calibration pH S1ManualCal? Choose Measurement Choose Standardize Standardization pHEntering a Known Slope Value pH ORP Calibration Preparation of ORP standard solutionsProcedure-Calibration against a standard meter and cell Calibrating AN IN-SERVICE Sensor ConductivityChoose Measurement Choose InProcess Procedure-Calibration against a standard solution ProgramDisplay Calibrate? Choose Measurement Choose CellConst Placing a NEW Sensor in Service ConductivityCell constant Conductivity µS/cm Resistor k Ω Calibrating the Analyzer ConductivityTo Reset the Factory Resistance CALIBRATION, see Section Model Description See Figure Section MaintenanceReplacement Parts OverviewExploded View of Solu Comp II Panel Mount Version Exploded View of Solu Comp II Pipe/Surface Mount Version Absolute Value of Measured Voltage Exceeds 2500 mV Section TroubleshootingOverview Troubleshooting Using Fault Codes Simulating Inputs Conductivity Simulating TemperatureEeprom Failure PH Sensitive Glass Membrane is BrokenConductivity Sensor Open or Shorted RTD Sense Line for Sensor 1 or Sensor 2 is OpenCalibration Error During Two-Point Calibration Problem See SectionInvalid Input While Manually Entering Slope Calibration Error during StandardizationSensor Does Not Respond to Known pH Changes Model Solu Comp Section Troubleshooting Calibration Error Using Standard Resistors Current Output Too Low Alarm Relays Do Not WorkMeasurement seems wrong Conductivity, µS/cm Cell constant, /cmGeneral Simulating pH input when the preamplifier is in the sensorPreamplifier is in the Sensor Simulating Inputs Conductivity Set the temperature correction to raw SectionThree-Wire RTD Configuration Simulating temperatureChecking for a Poisoned Reference Electrode Measuring Reference VoltageGeneral Warranty RepairNON-WARRANTY Repair Section Return of MaterialWarranty Specifications subject to change without notice

PN 51-1055pHC/rev.K specifications

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