ABB AX410 User Manual
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ABB AX410 User Manual

ABB AX410 User Manual

Single and dual input analyzers for low level conductivity
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Download this manual See also: Manual
User Guide
Single and Dual Input Analyzers
for Low Level Conductivity
IM/AX4CO_9
AX410, AX411, AX413, AX416,
AX418, AX450, AX455 & AX456

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Summary of Contents for ABB AX410

  • Page 1 User Guide Single and Dual Input Analyzers for Low Level Conductivity IM/AX4CO_9 AX410, AX411, AX413, AX416, AX418, AX450, AX455 & AX456...

  • Page 2: Electrical Safety

    We are an established world force in the design and manufacture of instrumentation for industrial process control, flow measurement, gas and liquid analysis and environmental applications. Cert. No. Q05907 As a part of ABB, a world leader in process automation technology, we offer customers application expertise, service and support worldwide. EN 29001 (ISO 9001) We are committed to teamwork, high quality manufacturing, advanced technology and unrivalled service and support.

  • Page 3: Table Of Contents

    1 INTRODUCTION .............. 2 6 INSTALLATION .............. 50 System Description ..........2 Siting Requirements ..........50 PID Control – AX410 and AX450 Analyzers Only ..2 Mounting ............... 51 AX400 Series Analyzer Options ....... 2 6.2.1 Wall-/Pipe-mount Analyzers ....... 51 6.2.2 Panel-mount Analyzers ......

  • Page 4: Introduction

    1 INTRODUCTION 1.1 System Description 1.2 PID Control – AX410 and AX450 Analyzers Only The AX410 single input and AX411 dual input conductivity The AX410 and AX450 single input conductivity analyzers analyzers have been designed for continuous monitoring and incorporate Proportional Integral Derivative (PID) control as control of low level conductivity.

  • Page 5: Operation

    2 OPERATION 2.1 Powering Up the Analyzer 2.2.1 Membrane Key Functions – Fig. 2.2 Warning. Ensure all connections are made Menu 1 correctly, especially to the earth stud – see Section 6.3. Advance to 1) Ensure the input sensors are connected correctly. next menu 2) Switch on the power supply to the analyzer.

  • Page 6: Operating Page

    …2 OPERATION Use the Menu Key Use the Sidescroll Key to scroll through the Pages within each Menu to scroll through the Menus Section 2.3, Page 6 Section 3.1, Page 9 Section 3.2, Page 10 Section 3.3, Page 11 Section 3.4, Page 12 Section 3.5, Page 13 Section 3.6, Page 16 VIEW SETPOINTS...
  • Page 7 2 OPERATION… Use the Menu Key Use the Sidescroll Key to scroll through the Pages within each Menu to scroll through the Menus Section 5.5, Page 34 CONFIG.OUTPUTS Config. Output 1 Config. Output 2 Config. Output 3 Config. Output 4 AO1: Assign AO2: Assign AO3: Assign...

  • Page 8: Single Input Conductivity

    …2 OPERATION 2.3 Operating Page 2.3.1 Single Input Conductivity Measured Values 0. 8 83 uS/cm Conductivity. 24. 8 Deg.C Temperature. Conductivity Notes. • The displayed conductivity and temperature readings are the actual measured values of the sample. • AX450 analyzers only – if is set to (Section 5.3), the displayed A: Cond.Units...
  • Page 9 2 OPERATION… …2.3 Operating Page 2.3.2 Dual Input Conductivity Measured Conductivity 0. 8 83 uS/cm Sensor A. 0. 8 92 uS/cm Sensor B. Dual Cond. Notes. • is displayed only if is set to – see Section 5.3. See Dual Cond. Signal Calc.

  • Page 10: Dual Input Conductivity

    …2 OPERATION …2.3 Operating Page …2.3.2 Dual Input Conductivity Calculations A range of computed dual conductivity readings can be displayed, each showing the result of a calculation performed by the analyzer. In each case, the type of calculation is shown on the lower display line, followed by the result of the calculation. Calculations performed are: Difference = A –...

  • Page 11: Operator Views

    3 OPERATOR VIEWS 3.1 View Set Points View Set Points This page shows alarm set points. The value of each of the set points is shown, together with the name of the parameter it's assigned to. ----- VIEW SETPOINTS Alarm assignments, set point values and relay/LED actions are programmable – see Section 5.4.

  • Page 12: View Outputs

    …3 OPERATOR VIEWS 3.2 View Outputs Theoretical Analog Output There are up to four analog outputs, each showing information for one sensor. ----- Note. Analog outputs 3 and 4 available only if option board fitted and analog features enabled – see Section 7.3. VIEW OUTPUTS 12.

  • Page 13: View Hardware

    3 OPERATOR VIEWS… 3.3 View Hardware ----- VIEW HARDWARE Sensor A Module Shows the type of input board fitted to the analyzer for the Sensor A input. ----- Cond. Cond. – 2-Electrode Conductivity Sensor A Module Sensor B Module – Dual input analyzers only Shows the type of input board fitted to the analyzer for the Sensor B input.

  • Page 14: View Software

    …3 OPERATOR VIEWS 3.4 View Software ----- VIEW SOFTWARE Issue Shows the version number of the software. 0. 0 1 AX450/2000 Issue Option board fitted and analog features enabled (Section 7.3) and VIEW LOGBOOK set to (Section 5.10) – see Section 3.5. Logbook VIEW SOFTWARE Conductivity...
  • Page 15 3 OPERATOR VIEWS… 3.5 View Logbook Note. The View Logbook function is available only if the option board is fitted and analog features enabled (Section 7.3) and is set to (Section 5.10). Logbook The logbook stores data entries for alarm events, sensor errors, power failures and sensor calibrations.
  • Page 16 …3 OPERATOR VIEWS …3.5 Logbook Alarms View Logbook Cals Use the keys to access the logbook. Errors Power ----- Errors Errors Note. If no entries are stored in the logbook, the display shows No More Entries Errors VIEW LOGBOOK Errors Sen.A logbook contains up to 5 entries (entry 1 is the most recent), each comprising Errors...

  • Page 17: View Logbook

    3 OPERATOR VIEWS… …3.5 Logbook View Logbook Power Errors Use the keys to access the logbook. Cals Alarms ----- Cals Note. If no entries are stored in the logbook, the display shows No More Entries VIEW LOGBOOK Cals Calibration Sen.A logbook contains up to 5 entries (entry 1 is the most recent), each comprising 2 Cals frames.

  • Page 18: View Clock

    …3 OPERATOR VIEWS 3.6 View Clock Note. The View Clock function is available only if the option board is fitted and analog features enabled – see Section 7.3. ----- VIEW CLOCK Date Shows the current date. ----- Date 05:02:04 Time Shows the current time.

  • Page 19: Setup

    4 SETUP 4.1 Sensor Calibration Notes. • Sensor calibration is not usually required as the cell constant 'K' assigned to a cell is sufficiently accurate for most applications. • TB2 cells are equipped with 2-wire temperature compensators therefore temperature errors can be expected in applications where the length of the connecting cable exceeds 10m.
  • Page 20 …4 SETUP …4.1 Sensor Calibration A: Calibration set to Edit Sensor Slope 11. 0 8 mS/cm Measured conductivity value. 1. 0 00 Sensor slope value. A: Sensor Slope Use the keys to adjust the sensor slope value within the range 0.200 to 5.000 until the measured conductivity value is correct.

  • Page 21: Programming

    5 PROGRAMMING 5.1 Security Code Note. This frame is displayed only if is not set to zero – see Section 5.9. Alter Sec. Code Enter the required code number (between 0000 and 19999) to gain access to the 0000 configuation pages. If an incorrect value is entered, access to the configuation pages is prevented and the display reverts to the Operating Page –...

  • Page 22: Configure Display

    …5 PROGRAMMING 5.2 Configure Display ----- CONFIG. DISPLAY Set Language Sets the language to be used on all displays. ----- Set Language Language Use the keys to select the required language. ----- English Deutsch Francais Espanol Italiano Set Language Set Temperature Units ----- Set Temp.
  • Page 23 5 PROGRAMMING… 5.3 Configure Sensors ----- CONFIG. SENSORS Configure Sensor A ----- Cond. Config. Sensor A Sensor B configuration (dual input analyzers only) is identical to Sensor A Config. Sensor B configuration. Single input analyzers only – return to main menu. CONFIG.

  • Page 24: Configure Sensors

    (AX450 and AX455 analyzers only), the maximum A: Cond Units USP645 A: Cell Constant cell constant is 0.10. AX410 and AX411 analyzers or not set to (AX450 and A: Cond Units USP645 A: T.Comp Range AX455 analyzers only) – continued on next page.
  • Page 25 5 PROGRAMMING… …5.3 Configure Sensors Temperature Compensation Range Hi TC Select a temperature compensation range to suit the sample temperature: Lo TC ----- – Raw conductivity measurement without temperature compensation. A: T.Comp Range Examples • Water for injection (WFI) for US Pharmacopoeia (USP) applications. •...
  • Page 26 …5 PROGRAMMING …5.3 Configure Sensors A: T.Comp Range set to Lo TC NaCl NaOH Low Range Temperature Compensation Acid Select the type of low range (0 to 100C [32 to 212F]) temperature compensation required: ----- Linear A: Temp.Comp. Linear – Linear temperature compensation based on a manually entered temperature coefficient (see Appendix A1) –...
  • Page 27 5 PROGRAMMING… …5.3 Configure Sensors A: T.Comp Range set to Hi TC Acid High Range Temperature Compensation Neutrl Select the type of high range (0 to 200C [32 to 392F]) temperature compensation required: ----- Base A: Temp.Comp. Base* – Temperature compensation based on the temperature coefficient of pure water containing trace alkalis.
  • Page 28 …5 PROGRAMMING …5.3 Configure Sensors Temperature Sensor Select the type of temperature sensor used, Pt100 or Pt1000. Pt100 ----- Pt1000 A: Temp.Sensor Temperature Coefficient Notes. 2. 0 0 %/C • Displayed only if is set to is set to T.Comp Range Lo TC Temp.Comp.
  • Page 29 5 PROGRAMMING… …5.3 Configure Sensors Configure Sensor B (dual input analyzers only) Sensor B configuration is identical to Sensor A configuration. ----- Config. Sensor B Continued on next page. Signal Calc. ----- B: Enable Cals. Return to main menu. CONFIG. SENSORS Config.
  • Page 30 …5 PROGRAMMING …5.3 Configure Sensors Signal Calculation (dual input analyzers only) Signal Notes. ----- Calc. • If the units selected for are not identical (page 22), no A: Cond Units B: Cond Units Inf.pH(NaOH) calculations are performed and are displayed No Calculation Dissimilar Units Inf.pH(NH3+NaCl)
  • Page 31 5 PROGRAMMING… …5.3 Configure Sensors After-cation Limit Note. Displayed only if is set to Signal Calc. Inf.pH(NH3) Inf.pH(NH3+NaCl) Inf.pH(NaOH) 0. 0 60 uS/cm Set the required after-cation conductivity limit, between: 0.060 and 10.00 S cm –1 – set to After Cat. Limit Signal Calc.
  • Page 32 …5 PROGRAMMING 5.4 Configure Alarms ----- CONFIG. ALARMS Configure Alarm 1 ----- Config. Alarm 1 Alarm 2 and 3 configuration (and Alarms 4 and 5 if option board fitted and Config. Alarm 2 analog features enabled – see Section 7.3) is identical to Alarm 1. Alarm 1 Type Select the type of alarm required: -----...

  • Page 33: Configure Alarms

    (AX450 and AX455 analyzers only) – continued on A1: USP Offset A1: Type USP645 next page. AX410 and AX411 analyzers or not set to (AX450 and A1: Setpoint A1: Type USP645 AX455 analyzers only) – continued on next page.
  • Page 34 …5 PROGRAMMING …5.4 Configure Alarms A1: Type USP645 USP Offset Enables the USP645 alarm set point value to be adjusted for increased process protection, i.e. the USP alarm set point value in Table 5.3 is offset by the amount entered (table value 0.
  • Page 35 5 PROGRAMMING… …5.4 Configure Alarms Note. The following examples illustrate , i.e. the alarm is activated when the process variable exceeds the High Alarm Actions defined set point. are the same, except the alarm is activated when the process variable drops below the Low Alarm Actions defined set point.
  • Page 36 …5 PROGRAMMING 5.5 Configure Outputs ----- CONFIG. OUTPUTS Configure Output 1 ----- Config. Output 1 Output 2 configuration (and Outputs 3 and 4 if option board fitted and analog Config. Output 2 features enabled – see Section 7.3) is identical to Output 1 configuration. % Pass Temp.B Assign...

  • Page 37: Configure Outputs

    5 PROGRAMMING… …5.5 Configure Outputs Range 0-10mA Set the analog output current range for the selected output. 0-20mA ----- 4-20mA AO1: Range Curve Linear Bi-Lin Select the analog output scale required. Log. 2 ----- Log. 3 Linear – Straight line between zero and span Bi-Lin –...
  • Page 38 …5 PROGRAMMING …5.5 Configure Outputs Span Value 100. 0 uS/cm are shown alternately on the upper display line. Use the uS/cm Adjust keys to adjust the displayed reading to the required span value. This is Point A in Fig. 5.6. 0.
  • Page 39 5 PROGRAMMING… …5.5 Configure Outputs Default Output Select the system reaction to failure: ----- – Ignore failure and continue operation. Hold – Stop on failure. This drives the analog output to the level set in the Default Val frame below. AO1: Default O/P Hold –...
  • Page 40 …5 PROGRAMMING …5.5 Configure Outputs ) l / i v i l l e i v i – ( Table 5.4 Analog Outputs – TDS Ranges i v i l l e i v i i v i   –...

  • Page 41: Output Functions

    5 PROGRAMMING… 5.6 Output Functions 5.6.1 Bi-Linear Output – Fig. 5.6 Span Value Breakpoint Zero Conductivity Measurement Value Fig. 5.6 Bi-Linear Output 5.6.2 Logarithmic Output (2-decade) – Fig. 5.7 100% Conductivity Measurement – shown as % of Analog Output Span Value Fig.

  • Page 42: Logarithmic Output (2-Decade)

    …5 PROGRAMMING …5.6 Output Functions 5.6.3 Logarithmic Output (3-decade) – Fig. 5.8 0.1% 100% Conductivity Measurement – shown as % of Analog Output Span Value Fig. 5.8 Logarithmic Output (3-Decade)

  • Page 43: Configure Clock

    5 PROGRAMMING… 5.7 Configure Clock Note. The Configure Clock function is available only if the option board is fitted and analog features enabled – see Section 7.3. ----- CONFIG. CLOCK Set Clock Set the system clock. ----- Set Clock? Return to main menu. CONFIG.
  • Page 44 …5 PROGRAMMING 5.8 Configure Control Notes. • PID control is applicable only to single input analyzers. • Before configuring the PID controller, refer to Appendix B for further information. ----- CONFIG. CONTROL Controller Type Select the controller type: ----- – Disables the controller –...

  • Page 45: Configure Control

    5 PROGRAMMING… …5.8 Configure Control 5.8.1 Configure Single PID Controller Controller set to ---- PID Controller See Section 5.8.2. Power Recovery Control Action Set the required control action: Rev. Rev. – Reverse acting – see Appendix B, Fig. B2. ---- Direct Direct –...

  • Page 46: Configure Single Pid Controller

    …5 PROGRAMMING …5.8 Configure Control …5.8.1 Configure Single PID Controller Output Type set to Time Time Proportioning Output The time proportioning output value is calculated using the following equation: 10. 0 Secs control output x cycle time on time = Cycle Time Set the cycle time, between 1.0 and 300.0 seconds in 0.1 second increments –...
  • Page 47 5 PROGRAMMING… …5.8 Configure Control …5.8.1 Configure Single PID Controller Output Type set to Pulse Pulse Frequency Ouput The pulse frequency output is the number of relay pulses per minute required for 100% control output. The actual number of pulses per minute is calculated using the following equation: Pulses/Minute % control output x pulse frequency output...

  • Page 48: Configure Power Failure Recovery Mode

    …5 PROGRAMMING …5.8 Configure Control 5.8.2 Configure Power Failure Recovery Mode ---- Power Recovery Power Failure Recovery Mode Last When power to the analyzer is restored, (Section 2.3) is set automatically Control Mode Manual according to the Power Failure Recovery Mode selected in this frame. ---- Auto Power Rec.

  • Page 49: Configure Security

    5 PROGRAMMING… 5.9 Configure Security ----- CONFIG. SECURITY Alter Security Code Set the security code to a value between 0000 and 19999. 00000 Alter Sec. Code Alter Calibration Code Set the sensor calibration access code to a value between 0000 and 19999. 00000 Alter Cal.
  • Page 50 …5 PROGRAMMING 5.11 Test Outputs and Maintenance ----- TEST/MAINTENANCE Test Outputs Displays the output test details for the analog outputs. ----- Note. Outputs 3 and 4 are available only if the option board is fitted and analog features Test Outputs enabled –...

  • Page 51: Test Outputs And Maintenance

    5 PROGRAMMING …5.11 Test Outputs and Maintenance Hold Outputs set to Auto. Automatic Time If required, set a time period between 1 and 6 hours, in 30 minute increments, for which the outputs are held when is set to Hold Outputs Auto.

  • Page 52: Installation

    6 INSTALLATION 6.1 Siting Requirements Notes. • Mount in a location free from excessive vibration. • Mount away from harmful vapours and/or dripping fluids. • Where possible, mount the analyzer at eye level to allow an unrestricted view of the front panel displays and controls.
  • Page 53 6 INSTALLATION… 6.2 Mounting 6.2.1 Wall-/Pipe-mount Analyzers – Figs. 6.2 and 6.3 Dimensions in mm (in.) Fixing Centers 94 (3.7) 210 (8.23) 192 (7.56) 96 (3.76) Fig. 6.2 Overall Dimensions 61 (2 ) OD Position 'U' bolts on pipe Vertical or Horizontal Position plate over 'U' bolts Drill suitable...

  • Page 54: Mounting

    …6 INSTALLATION …6.2 Mounting 6.2.2 Panel-mount Analyzers – Figs. 6.4 and 6.5 Dimensions in mm (in.) +0.8 +0.03 (3.62 –0 –0 137.50 (5.41) (0.98) 96 (3.78) +0.8 –0 Panel Cut-out +0.03 (3.62 –0 5.40 (0.2) Fig. 6.4 Overall Dimensions Cut a hole in the panel (see Fig. 6.4 for dimensions). Instruments may be close stacked to DIN 43835 Remove the panel clamp and anchors from the instrument case...

  • Page 55: Wall-/Pipe-Mount Analyzers

    6 INSTALLATION… 6.3 Connections, General Warnings. • The instrument is not fitted with a switch therefore a disconnecting device such as a switch or circuit breaker conforming to local safety standards must be fitted to the final installation. It must be fitted in close proximity to the instrument within easy reach of the operator and must be marked clearly as the disconnection device for the instrument.

  • Page 56: Connections, General

    …6 INSTALLATION …6.3 Connections, General 6.3.1 Relay Contact Protection and Interference Suppression – Fig. 6.6 If the relays are used to switch loads on and off, the relay contacts can become eroded due to arcing. Arcing also generates radio frequency interference (RFI) which can result in analyzer malfunctions and incorrect readings. To minimize the effects of RFI, arc suppression components are required;...

  • Page 57: Cable Entry Knockouts

    6 INSTALLATION… …6.3 Connections, General 6.3.2 Cable Entry Knockouts, Wall-/Pipe-mount Analyzer – Fig. 6.7 The analyzer is supplied with 7 cable glands, one fitted and six to be fitted, as required, by the user – see Fig. 6.7. Release the four captive screws and remove the terminal cover plate Factory-fitted cable gland...

  • Page 58: Wall-/Pipe-Mount Analyzer Connections

    …6 INSTALLATION 6.4 Wall-/Pipe-mount Analyzer Connections 6.4.1 Access to Terminals – Fig. 6.8 Release the four captive screws and remove the terminal cover plate Terminal Block C (Option Board) Case Earth Terminal Block A Terminal Block B (Ground) Stud Fig. 6.8 Access to Terminals, Wall-/Pipe-mount Analyzer...

  • Page 59: Wall-/Pipe-Mount Analyzer Connections

    Not Used * When a 2-wire Pt100, Pt1000 or 'balco 3k' temperature compensator is fitted. Refer also to Section 6.6 for ABB UK and US Sensor Systems Connections Notes. • When connecting non-metal conductivity cells or metal conductivity cells that are isolated from earth (ground), e.g.
  • Page 60 …6 INSTALLATION 6.5 Panel-mount Analyzer Connections 6.5.1 Access to Terminals – Fig. 6.10 Terminal Block A Earth (Ground) Stud Terminal Block C Terminal Block B (Option Board) Fig. 6.10 Access to Terminals, Panel-mount Analyzers...

  • Page 61: Panel-Mount Analyzer Connections

    Not Used * When a 2-wire Pt100, Pt1000 or 'balco 3k' temperature compensator is fitted. Refer also to Section 6.6 for ABB UK and US Sensor Systems Connections Notes. • When connecting non-metal conductivity cells or metal conductivity cells that are isolated from earth (ground), e.g.

  • Page 62: Abb Conductivity Sensor Systems Connections

    …6 INSTALLATION 6.6 ABB Conductivity Sensor Systems Connections – Tables 6.1 to 6.3 v i t y t i ) l l o l l – o l l – – – e t i – – Table 6.1 Conductivity Cell Connections – Cable Detached, Models 2045 and 2077...

  • Page 63: Calibration

    Analog-to-Digital converter chip self-compensates for zero and span drift. It is therefore unlikely that the calibration will change over time. • attempt recalibration without first contacting ABB. Do Not • attempt recalibration unless the input board has been replaced or the Factory Calibration tampered with.
  • Page 64 …7 CALIBRATION 7.3 Factory Settings Use the Sidescroll Key to scroll through the Pages within each Menu Section 7.3, Page 63 FACTORY SETTINGS Factory Set Code Cal. Sensor A Cal. Sensor B Cal. Output 1 Calibrate I/P ? Calibrate I/P ? O1: Adjust 4mA Use the Menu A:Res.Zero (O/C)

  • Page 65: Factory Settings

    7 CALIBRATION… …7.3 Factory Settings ----- FACTORY SETTINGS Factory Settings Access Code Enter the required code number (between 0000 and 19999) to gain access to the factory settings. If an incorrect value is entered, access to subsequent frames is prevented and the 0000 display reverts to the top of the page.
  • Page 66 …7 CALIBRATION …7.3 Factory Settings Resistance Zero (Open Circuit) 0. 0 uS/cm Open circuit the cell simulator. 0. 0 Calib The display advances automatically to the next step once a stable and valid value is A:Res.Zero (O/C) recorded. Note. The upper 7-segment display shows the measured conductivity. Once the signal is within range the lower 7-segment display shows the same value and is displayed to Calib...
  • Page 67 7 CALIBRATION… …7.3 Factory Settings Resistance Span (20R) 5000 uS/cm Set the cell simulator to 20. 5000 Calib The display advances automatically to the next step once a stable and valid value is recorded. A:Res.Span(20R) Self Checking 5014 uS/cm The analyzer calibrates the internal reference resistance automatically to compensate for changes in ambient temperatures.
  • Page 68 …7 CALIBRATION …7.3 Factory Settings Calibrate Output 1 Note. When adjusting the 4 and 20mA output values, the display reading is unimportant ----- and is used only to indicate that the output is changing when the keys are pressed. Cal. Output 1 See below.
  • Page 69 7 CALIBRATION …7.3 Factory Settings Option Board Fitted and Analog Features Enabled Calibrate Output 3 Notes. ----- • Output 3 (and Output 4) calibration is applicable only if the option board is fitted and Cal. Output 3 analog features enabled – see below. •...

  • Page 70: Simple Fault Finding

    8 SIMPLE FAULT FINDING 8.1 Error Messages 8.2 No Response to Conductivity Changes If erroneous or unexpected results are obtained the fault may be The majority of problems are associated with the conductivity indicated by an error message – see Table 8.1. However, some cell which must be cleaned as an initial check.

  • Page 71: No Response To Conductivity Changes

    8 SIMPLE FAULT FINDING …8.2 No Response to Conductivity Changes Failure to respond to the input indicates a fault with the analyzer which must be returned to the Company for repair. A response, but with incorrect readings, usually indicates an electrical calibration problem.

  • Page 72: Specification

    SPECIFICATION pH /Redox (ORP) – AX416 Conductivity – AX41x and AX45x Inputs Range pH or mV input and solution earth –1 Programmable 0 to 0.5 to 0 to 10,000S cm (with various cell constants) Temperature sensor Pt100, Pt1000 or Balco 3k Enables connection to glass or enamel pH and reference sensors Minimum span and Redox (ORP) sensors...
  • Page 73 Profibus DP (with option board fitted) Set point adjustment Configurable as normal or failsafe high/low or diagnostic alert Hysteresis of reading Control Function – AX410 Only Programmable 0 to 5% in 0.1% increments Controller Type P, PI, PID (configurable) Delay...
  • Page 74 …SPECIFICATION Access to Functions Environmental Data Direct keypad access Operating temperature limits Measurement, maintenance, configuration, diagnostics or service –20 to 65C (–4 to 149F) functions Storage temperature limits Performed without external equipment or internal jumpers –25 to 75C (–13 to 167F) Operating humidity limits Sensor Cleaning Function –...

  • Page 75: Appendix A

    APPENDIX A A1 Automatic Temperature Compensation At high purity water conductivity levels, the conductivity/ The conductivities of electrolytic solutions are influenced temperature relationship is made up of two components: the considerably by temperature variations. Thus, when significant first component, due to the impurities present, generally has a temperature fluctuations occur, it is general practice to correct temperature coefficient of approximately 0.02/C;...

  • Page 76: A1.1 Calculation Of Temperature Coefficient

    …APPENDIX A A1.1 Calculation of Temperature Coefficient The temperature coefficient of a solution can be obtained experimentally by taking non-temperature compensated conductivity measurements at two temperatures and applying the following expression: – G  = – 25) – G – 25) Where: G = conductivity measurement at a C...

  • Page 77: Differential Conductivity

    APPENDIX A… A3 Inferred pH Derived from Warning. Differential Conductivity The calculation of inferred pH relies on the strict control of chemical conditions within the NH , NH +NaCl or A3.1 Monitoring on Steam-Raising Plant NaOH dosed sample. Contamination with chemical For many years, it has been standard practice in power plants to substances other than those with which the sample is use inferred pH, calculated from before- and after-cation...

  • Page 78: A3.2 Monitoring On Avt Systems

    …APPENDIX A A3.2 Monitoring on AVT Systems A3.3 Monitoring on AVT Systems with Impurities For low conductivity feedwater applications, all volatile chemical Differential conductivity can also give an indication of sample pH treatment (AVT) is often applied. on AVT systems where there are low concentrations of ionic impurities present in addition to the volatile alkaline agent (e.g.

  • Page 79: A3.4 Monitoring On Solid Alkaline Treated Systems

    APPENDIX A A3.4 Monitoring on Solid Alkaline Treated Systems Generally, boiler waters treated with solid alkaline chemicals, for example, sodium hydroxide, have relatively high conductivities. The dual input conductivity analyzer, in conjunction with a cation resin column, can be used to indicate sample pH. If the sample also contains salts (e.g.

  • Page 80: B1.1 Reverse Acting Single Pid Control

    APPENDIX B B1 Single PID Controller – Fig. B1 The single PID controller is a basic feedback control system using three-term PID control with a local set point. Manual Output Control Set Point Output 1 PID Control Loop PID Output Process Variable Fig.

  • Page 81: B1.2 Direct Acting Single Pid Control

    APPENDIX B… B1.2 Direct Acting Single PID Control – Fig. B3 Direct acting control is used when the process conductivity is greater than the required output conductivity. 100% Control Output Direct Acting 100% Process Variable Range Fig. B3 Direct Acting Single PID Control B2 Ouput Assignment The output signal is assignable to either relay 1 (Time or Pulse output type) or analog output 1 (Analog output type).

  • Page 82: Setting Up Three Term (Pid) Control Parameters

    …APPENDIX B B3 Setting Up Three Term (PID) Control Parameters g) Set Derivative Time To enable a process to be controlled satisfactorily, the following (for P+I+D control) conditions must apply: a) The process must be capable of reaching a natural balance (for P+D control) with a steady load.
  • Page 83 Service and Repair Centre. – Food & Beverage – Manufacturing United Kingdom – Metals and Minerals – Oil, Gas & Petrochemical ABB Limited – Pulp and Paper Tel: +44 (0)1453 826661 Fax: +44 (0)1453 829671 Drives and Motors United States of America •...
  • Page 84 ABB has Sales & Customer Support The Company’s policy is one of continuous product improvement and the right is reserved to modify the expertise in over 100 countries worldwide information contained herein without notice. Printed in UK (07.05) www.abb.com © ABB 2005 ABB Limited ABB Inc.

This manual is also suitable for:

Ax411Ax450Ax455Ax456Ax413Ax416 ... Show all

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