ABB AnalyzeIT AX460 User Manual
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ABB AnalyzeIT AX460 User Manual

ABB AnalyzeIT AX460 User Manual

Single input ph/redox (orp) analyzer
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Download this manual See also: Manual
IT
Analyze
User Guide –
PID Control Supplement
Single Input pH/Redox (ORP) Analyzer
IM/AX4PID_2
AX460

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Summary of Contents for ABB AnalyzeIT AX460

  • Page 1 Analyze User Guide – PID Control Supplement Single Input pH/Redox (ORP) Analyzer IM/AX4PID_2 AX460...

  • Page 2: Electrical Safety

    Cert. No. Q 05907 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

    CONTENTS INTRODUCTION ............2 Single PID Controller .......... 2 1.1.1 Reverse Acting (Base) Single PID Control ........ 2 1.1.2 Direct Acting (Acid) Single PID Control ........ 3 Dual (Bi-directional) PI Controller ......3 Ouput Assignment ..........4 OPERATION ..............5 Introduction ............

  • Page 4: Introduction

    1 INTRODUCTION The AX460 Single Input pH Analyzer has been enhanced with the addition of Proportional Integral Derivative (PID) control. PID control can be either relay output (Time Proportioning or Pulse Frequency) or analog output. The control output can be configured as either a (Reverse or Direct Acting) or as a (Bi-directional Single PID Controller...

  • Page 5: Direct Acting (Acid)

    1 INTRODUCTION… 1.1.2 Direct Acting (Acid) Single PID Control – Fig. 1.3 Direct acting control is used when the process pH is greater than the required output pH. Normally, acid is added to the sample to decrease the pH value. 100% Control Output...

  • Page 6: Direct Acting (Acid)

    …1 INTRODUCTION …1.2 Dual (Bi-directional) PI Controller – Figs 1.4 and 1.5 Dual (bi-directional) control is used if the pH value must be controlled within specified upper and lower limits. The minimum span between set points is 0.5pH. 100% Control Output Reverse Acting Direct Acting...

  • Page 7: Operation

    2 OPERATION 2.1 Introduction The location of the PID controller programming pages and menus within the analyzer's operating software is shown in the overall programming charts – see Figs. 2.1 and 2.2. Use the Sidescroll Key to scroll through the Pages within each Menu Use the Menu Key to scroll through the Menus OPERATING PAGE...
  • Page 8 …2 OPERATION Use the Sidescroll Key to scroll through the Pages within each Menu Use the Menu Key to scroll through the Menus OPERATING PAGE SENSOR CAL. Security Code CONFIG. DISPLAY Refer to User Guide (IM/AX4PH) CONFIG. SENSORS CONFIG. ALARMS CONFIG.

  • Page 9: Single Pid Controller

    2 OPERATION… 2.2 Operating Page 2.2.1 Single PID Controller Note. The Single PID Controller operating page replaces the Single Input pH operating page shown in Section 2.3.1 of the User Guide, IM/AX4PH. Measured Values 7. 0 0 24. 6 Deg.C Temperature.
  • Page 10 …2 OPERATION …2.2 Operating Page 2.2.2 Dual (Bi-directional) PI Controller Note. The Dual (Bi-directional) PI Controller operating page replaces the Single Input pH operating page shown in Section 2.3.1 of the User Guide, IM/AX4PH. Measured Values 7. 0 0 24. 6 Deg.C Temperature.

  • Page 11: Dual (Bi-Directional) Pi Controller

    2 OPERATION …2.2 Operating Page …2.2.2 Dual (Bi-directional) PI Controller Measured Millivolts Millivolts. Millivolts % Slope and pH Check Value 100. 0 % slope value. A value between the programmed minimum % slope value (see in the Set Min Slope 7.

  • Page 12: Operator Views

    3 OPERATOR VIEWS 3.1 View Set Points Notes. • The View Set Points page replaces the View Set Points page shown in Section 3.1 of the User Guide, IM/AX4PH. • The parameter names and units of measurement displayed in the View Set Points page depend on the Probe Type setting for Sensor A in the page –...

  • Page 13: Programming

    4 PROGRAMMING 4.1 Setting Up Three Term (PID) Control Parameters g) Set Derivative Time To enable a process to be controlled satisfactorily, the following conditions must apply: (for P+I+D control) a) The process must be capable of reaching a natural balance (for P+D control) with a steady load.
  • Page 14 …PROGRAMMING 4.3 Configure Control Note. Applicable only if is set to – see User Guide, Section 5.3. A: Probe Type ----- CONFIG. CONTROL Controller Type Select the controller type: ----- Dual – Disables the controller – Single PID controller Controller Dual –...

  • Page 15: Configure Control

    PROGRAMMING… …4.3 Configure Control 4.3.1 Configure Single PID Controller Controller set to ---- PID Controller See Section 4.4. Power Recovery Control Action Set the required control action: Rev. Rev. – Reverse acting – see Fig. 1.2. ---- Direct Direct – Direct acting – see Fig. 1.3. Control Action Proportional Band Set the required proportional band between 0.1 and 999.9% in 0.1% increments.

  • Page 16: Configure Single Pid Controller

    …PROGRAMMING …4.3 Configure Control …4.3.1 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 control output x cycle time Secs on time = Cycle Time Set the cycle time between 1.0 and 300.0 seconds in 0.1 second increments –...
  • Page 17 PROGRAMMING… …4.3 Configure Control …4.3.1 Configure Single PID Controller Output Type set to Pulse Pulse Frequency Ouput The pulse frequency output is the number of relay pulses per minute expected 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 18: Configure Dual (Bi-Directional Pi Controller

    …PROGRAMMING …4.3 Configure Control 4.3.2 Configure Dual (Bi-directional) PI Controller Controller set to Dual ---- Acid Controller See page 18. Base Controller Proportional Band Set the required proportional band between 0.1 and 999.9% in 0.1% increments. 100. 0 % Man Proportional Band Integral Time Set the integral action time between 1 and 7200 seconds in 1 second increments.

  • Page 19: Configure Dual (Bi-Directional) Pi Controller

    PROGRAMMING… …4.3 Configure Control …4.3.2 Configure Dual (Bi-directional) PI Controller Output Type set to Time Time Proportioning Output Set the cycle time between 1.0 and 300.0 seconds in 0.1 second increments. 6. 0 Secs Note. See also Section 4.3.1 page 14. Cycle Time Acid Controller See next page.
  • Page 20 …PROGRAMMING …4.3 Configure Control …4.3.2 Configure Dual (Bi-directional) PI Controller Controller set to Dual ---- Base Controller See Section 4.4. Power Recovery Proportional Band Set the required proportional band between 0.1 and 999.9% in 0.1% increments. 100. 0 % Man Proportional Band Integral Time Set the integral action time between 1 and 7200 seconds in 1 second increments.

  • Page 21: Configure Power Failure Recovery Mode

    PROGRAMMING 4.4 Configure Power Failure Recovery Mode ---- Power Recovery Power Failure Recovery Mode Last When power to the analyzer is restored, (see Section 2.2) is set automatically Control Mode Manual according to the chosen Power Failure Recovery Mode. ---- Auto Power Rec.
  • Page 22 NOTES...
  • Page 23 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 24 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. www.abb.com Printed in UK (07.04) © ABB 2004 ABB Limited ABB Inc.

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