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Swan Analytical Instruments AMU-II Rescon Operator's Manual

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A-96.150.351 / 130525
AMU-II Rescon
Operator's Manual
AMU-II Rescon

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Summary of Contents for Swan Analytical Instruments AMU-II Rescon

  • Page 1 A-96.150.351 / 130525 AMU-II Rescon Operator’s Manual AMU-II Rescon...

  • Page 2: Customer Support

    Swan Analytische Instrumente AG Studbachstrasse 13 8340 Hinwil Switzerland Internet: www.swan.ch E-mail: support@swan.ch Document Status AMU-II Rescon Operator’s Manual Title: A-96.150.351 Revision Issue May 2025 First edition © 2025, Swan Analytische Instrumente AG, Switzerland, all rights reserved. This manual applies to firmware V1.00 and higher.

  • Page 3: Table Of Contents

    AMU-II Rescon Transmitter ........
  • Page 4 AMU-II Rescon Maintenance ........... 32 6.1.

  • Page 5: Safety Instructions

    AMU-II Rescon Safety Instructions Operator’s Manual This document describes the main steps for instrument setup, opera- tion and maintenance. Safety Instructions General The instructions included in this section explain the potential risks associated with instrument operation and provide important safety practices designed to minimize these risks.

  • Page 6: Warning Notices

    AMU-II Rescon Safety Instructions 1.1. Warning Notices The symbols used for safety-related notices have the following meaning: DANGER Your life or physical wellbeing are in serious danger if such warnings are ignored.  Follow the prevention instructions carefully. WARNING Severe injuries or damage to the equipment can occur if such warnings are ignored.
  • Page 7 AMU-II Rescon Safety Instructions Warning signs The warning signs in this manual have the following meaning: Electrical shock hazard Corrosive Harmful to health Flammable General warning Attention A-96.150.351 / 130525...

  • Page 8: General Safety Regulations

    AMU-II Rescon Safety Instructions 1.2. General Safety Regulations Legal The user is responsible for proper system operation. All precautions must be followed to ensure safe operation of the instrument. requirements Spare parts Use only official Swan spare parts and disposables. If other parts are used during the normal warranty period, the manufacturer’s warranty...

  • Page 9: Product Description

    Product Description 2.1. Description of the System Application The AMU-II Rescon is applicable for the measurement of specific resistivity or specific conductivity in ultrapure water. range The transmitter can be used with a two-electrode sensor with an integrated NT5k temperature sensor, e.g. Swansensor RC U.
  • Page 10 AMU-II Rescon Product Description Alarm relays Two potential-free contacts (one normally open and one normally closed). Summary alarm indication for programmable alarm values and instrument faults.  Normally open contact: closed during normal operation, open on error and power loss.

  • Page 11: Single Components

    AMU-II Rescon Product Description 2.2. Single Components 2.2.1 AMU-II Rescon Transmitter ® General Electronics housing: Noryl resin Protection degree: up to IP54 (front) Ambient temperature: -10 to +50 °C Humidity: 10–90% rel., non condensing Display: backlit LCD, 75 x 45 mm...

  • Page 12: Swansensor Rc U

    AMU-II Rescon Product Description 2.2.2 Swansensor RC U Two-electrode conductivity sensor for continuous measurement of ultrapure water at high pressure. Ø 29.0 mm / 1.14" Ø 30.0 mm / 1.18" Ø 20 mm / 0.79" Swansensor RC U Swansensor RC U...

  • Page 13: Flow Cell Qv-Hflow L130

    AMU-II Rescon Product Description 2.2.3 Flow Cell QV-HFlow L130 Flow cell for continuous conductivity measurement in ultrapure water with integrated needle valve for flow adjustment and integrated sam- ple flow meter. For one sensor with ¾" NPT thread. 140 mm / 5.51"...

  • Page 14: Flow Cell B-Flow L130

    AMU-II Rescon Product Description 2.2.4 Flow Cell B-Flow L130 Flow cell for continuous conductivity measurement in ultrapure water at high pressure. For one sensor with ¾" NPT thread. ≈ 66 mm / 2.60" 30 mm / 45 mm / 40 mm / 1.18"...

  • Page 15: Installation

    AMU-II Rescon Installation Installation 3.1. Mounting of the AMU-II Transmitter Transmitter 96.0 mm / 3.78" dimensions 85.0 mm / 3.35" 78.0 mm / 3.07" A-96.150.351 / 130525...
  • Page 16 AMU-II Rescon Installation Cutout 92 mm / 3.62" dimensions A-96.150.351 / 130525...

  • Page 17: Electrical Connections

    AMU-II Rescon Installation 3.2. Electrical Connections Connection diagram CAUTION Use only the terminals shown in this diagram, and only for the mentioned purpose. Use of any other terminals will cause short circuits with possible corresponding consequences to material and personnel.

  • Page 18: Power Supply

    FV1  Mains equipped with an external switch or circuit-breaker – near the instrument – easily accessible to the operator – marked as interrupter for AMU-II Rescon 3.4. Sensor Terminals: see Connection diagram, p. Sensor settings: see Instrument Setup, p.

  • Page 19: Input

    AMU-II Rescon Installation 3.6. Input Note: Use only potential-free (dry) contacts. Terminals 16/8 For programming see Program List and Explanations, p. 3.7. Relay Contacts 3.7.1 Alarm Relay Note: Max. load 100 mA/50 V resistive Alarm output for system errors. For error codes see Error List, p.

  • Page 20: Signal Output 1 And 2 (Current Outputs)

    AMU-II Rescon Installation 3.8. Signal Output 1 and 2 (Current Outputs) Note: Max. burden 510 Ω If signals are sent to two different receivers, use signal isolator (loop isolator). Signal output 1: Terminals 12 (+) and 11 (-) Signal output 2: Terminals 13 (+) and 11 (-) For programming see Program List and Explanations, p.

  • Page 21: Interface Options

    AMU-II Rescon Installation 3.9. Interface Options The functionality of the AMU-II Rescon can be expanded with one of the following interface options:  RS485 with Modbus or Profibus protocol  HART  USB 3.9.1 Installation WARNING Electrical shock hazard Before opening the housing, disconnect the AMU-II transmitter from the power supply.
  • Page 22 AMU-II Rescon Installation To install an interface option, proceed as follows: 1 Switch power off. 2 Loosen the four screws at the back of the AMU-II transmitter and remove the backplate. 3 Pull the mainboard [B] completely out of the housing.

  • Page 23: Usb Option

    AMU-II Rescon Installation 3.9.2 USB Option C USB stick Pushbutton Blue LED Menu item Calling up the <Operation>/<Eject USB Stick> menu item performs the following actions:  the calibration history and the event history are copied to the USB stick, ...

  • Page 24: Rs485 Option

    AMU-II Rescon Installation 3.9.3 RS485 Option Menu items After the RS485 option has been installed, the <Installation>/ <Interface> menu item becomes visible. Select Modbus RTU or Profibus as protocol. Terminating On the last RS485 interface in the network, move the switch to the position marked “Ron”...

  • Page 25: 3.10. Rs232 Interface

    AMU-II Rescon Installation 3.10. RS232 Interface The RS232 interface is located on the back of the AMU-II transmitter. Use the USB to RS232 interface converter available from Swan. Downloading To use the functions provided via the RS232 interface, the SwanTerminal program is required, which can be downloaded from SwanTerminal www.swan.ch.

  • Page 26: Instrument Setup

    AMU-II Rescon Instrument Setup Instrument Setup 4.1. Establish Sample Flow 1 Open flow regulating valve. 2 Switch on power. 3 Adjust sample flow. Note: To allow a precise measurement in the range of 18– 18.24 MΩ×cm, set the sample flow to 70–100 l/h.
  • Page 27 AMU-II Rescon Instrument Setup Sensor Menu 5.1.4: Parameters Enter the following parameters printed on the sensor label. 87.322.210 RC U, 0.3 m SW2540001 ZK = 0.00997 DT = -0.13 °C  Cell constant ZK  Temperature correction DT  Sensor cable length. If the sensor cable length is 0.3 m, set the cable length to 0 m.

  • Page 28: Operation

    AMU-II Rescon Operation Operation 5.1. Keys to exit a menu or command (rejecting any changes) to move back to the previous menu level to move DOWN in a menu list and to decrease digits to move UP in a menu list and to increase digits...

  • Page 29: Display

    AMU-II Rescon Operation 5.2. Display AMU-II RESCON AMU-II RESCON 15:20:18 17.98 MΩ 80.0 l/h 24.8°C normal operation HOLD input closed or cal delay: Instrument on hold (shows status of signal outputs). input closed: control/limit is interrupted (shows status of signal outputs).

  • Page 30: Software Structure

    AMU-II Rescon Operation 5.3. Software Structure Main Menu Messages Diagnostics Maintenance Operation Installation Menu Messages 1 Messages Reveals pending errors as well as an event history Pending Errors (time and state of events that have occurred at an Message List earlier point of time).

  • Page 31: Changing Parameters And Values

    AMU-II Rescon Operation 5.4. Changing Parameters and Values Changing The following example shows how to set the Q-HFlow sensor: parameters 1 Select the parameter you want to Sensors 5.1.1 change. Flow None 2 Press <Enter> Meas. Mode Resistivity USP Operating Mode Sensor parameters Temp.

  • Page 32: Maintenance

    AMU-II Rescon Maintenance Maintenance 6.1. Maintenance Schedule  Clean the sensor. If required 6.2. Stop of Operation for Maintenance 1 Stop sample flow. 2 Shut off power of the instrument. A-96.150.351 / 130525...

  • Page 33: Maintenance Of Sensor

    AMU-II Rescon Maintenance 6.3. Maintenance of Sensor 6.3.1 Clean Sensor The Swansensor RC-U is largely maintenance free. However, de- pending on the application, it can be contaminated, which may cause problems. The Swansensor RC-U is available in the following 2 different ver- sions: ...
  • Page 34 AMU-II Rescon Maintenance Sensor Flow cell Flow regulating valve Install the 1 Wrap 7 turns of teflon tape around the sensor thread. sensor with fix 2 Screw the sensor into the flow cell and tighten it well. cable 3 Feed the sensor cable into the transmitter housing.
  • Page 35 AMU-II Rescon Maintenance Remove the 1 Unscrew and remove the sensor plug [A] from the sensor [B]. sensor with 2 Proceed according to “Remove the Sensor with fixed cable”, plug step 4. Sensor plug Sensor Install the sen- 1 Wrap 7 turns of teflon tape around the sensor thread.

  • Page 36: Longer Stop Of Operation

    AMU-II Rescon Maintenance 6.4. Longer Stop of Operation 1 Stop sample flow. 2 Shut off power of the instrument. 3 Unscrew and remove the sensor. 4 Empty and dry the flow cell. A-96.150.351 / 130525...

  • Page 37: Error List

    AMU-II Rescon Error List Error List Error Non-fatal error. Indicates an alarm if a programmed value is exceed- ed. Such errors are marked E0xx (bold and black). Fatal error (blinking symbol) Control of dosing devices is interrupted. The indicated measured values are possibly incorrect.
  • Page 38 AMU-II Rescon Error List Error Description Corrective action – check process E001 Alarm high – check programmed value – check process E002 Alarm low – check programmed value – check process E007 Sample Temp. high – check programmed value – check process E008 Sample Temp.
  • Page 39 AMU-II Rescon Error List Error Description Corrective action – call service E031 Calibration Recout – call service E032 Wrong Frontend – none, normal status E033 Power-on – none, normal status E034 Power-down A-96.150.351 / 130525...

  • Page 40: Program Overview

    AMU-II Rescon Program Overview Program Overview For explanations about each parameter of the menus see Program List and Explanations, p.  Menu 1 Messages informs about pending errors and mainte- nance tasks and shows the error history. Password protection possible. No settings can be modified.

  • Page 41: Diagnostics (Main Menu 2)

    AMU-II Rescon Program Overview 8.2. Diagnostics (Main Menu 2) Identification Designation * Menu numbers 2.1* Version Factory Test 2.1.3.1* Instrument 2.1.3* Motherboard Front End Operating Time 2.1.4.1* Years / Days / Hours / Minutes / Seconds 2.1.4* Sensors Cond. Sensor Current Value MOhm 2.2*...

  • Page 42: Maintenance (Main Menu 3)

    AMU-II Rescon Program Overview 8.3. Maintenance (Main Menu 3) Simulation 3.2.1* * Menu numbers Alarm Relay 3.1* Relay 1 3.2.2* 3.2.3* Relay 2 3.2.4* Signal Output 1 3.2.5* Signal Output 2 Set Time (Date), (Time) 3.2* 3.3* 8.4. Operation (Main Menu 4) Sensors Filter Time Const.

  • Page 43: Installation (Main Menu 5)

    AMU-II Rescon Program Overview 8.5. Installation (Main Menu 5) Sensors * Menu numbers Flow 5.1* 5.1.1* Meas. Mode 5.1.2* Sensor Parameters Cell Constant 5.1.4 Temp. Corr. Cable length Temp. Compensation Comp. 5.1.5.1 5.1.5* Signal Outputs Signal Output 1 and 2 Parameter 5.2.1.1 - 5.2.2.1*...
  • Page 44 AMU-II Rescon Program Overview Input 5.3.4.1* * Menu numbers Active 5.3.4* 5.3.4.2* Signal Outputs 5.3.4.3* Output/Control Fault 5.3.4.4* 5.3.4.5* Delay Miscellaneous 5.4.1* Language 5.4* 5.4.2* Set defaults 5.4.3* Load Firmware Password Messages 5.4.4.1* 5.4.4* 5.4.4.2* Maintenance 5.4.4.3* Operation 5.4.4.4* Installation 5.4.5*...

  • Page 45: Program List And Explanations

    AMU-II Rescon Program List and Explanations Program List and Explanations 1 Messages 1.1 Pending Errors 1.1.5 Provides the list of active errors with their status (active, acknowl- edged). If an active error is acknowledged, the alarm relay is active again. Cleared errors are moved to the Message list.
  • Page 46 AMU-II Rescon Program List and Explanations 2.4 I/O State Shows status of all inputs and outputs. 2.4.1 Alarm relay: Active or inactive Relay 1 and 2: Active or inactive Input: Open or closed. Signal output 1 and 2: Actual current in mA 2.5 Interface...

  • Page 47: Maintenance

    AMU-II Rescon Program List and Explanations 3 Maintenance 3.1 Simulation To simulate a value or a relay state, select the  alarm relay,  relay 1or 2,  signal output 1 or 2 with the [ ] or [ ] key.

  • Page 48: Operation

    AMU-II Rescon Program List and Explanations 4 Operation 4.1 Sensors 4.1.1 Filter Time Constant: Used to damp noisy signals. The higher the fil- ter time constant, the slower the system reacts to changes of the measured value. Range: 5–300 Sec 4.1.2...

  • Page 49: Installation

    AMU-II Rescon Program List and Explanations 5 Installation 5.1 Sensors 5.1.1 Flow: Select the type of flow cell. Possible flow cells: Mode B-Flow Q-Flow QV-flow None Q-flow Q-Hflow Selection of the suitable flow cell. Flow cell type Mode B-Flow None...

  • Page 50: Signal Outputs

    AMU-II Rescon Program List and Explanations 5.2 Signal Outputs Note: The navigation in the menu <Signal Output 1> and <Signal Output 2> is identical. For reason of simplicity only the menu numbers of Signal Output 1 are used in the following.
  • Page 51 AMU-II Rescon Program List and Explanations 5.2.1.3 Function: Define if the signal output is used to transmit a process value or to drive a control unit. Available functions are:  Linear, bilinear or logarithmic for process values. As process values, p. 51 ...
  • Page 52 AMU-II Rescon Program List and Explanations 5.2.1.40 Scaling: Enter beginning and end point (Range low & high) of the linear or logarithmic scale. In addition, the midpoint for the bilinear scale. If Parameter = Meas. Value 5.2.1.40.10 Range low: 0.00–200 MΩ or 0.000–2000 µS 5.2.1.40.20...
  • Page 53 AMU-II Rescon Program List and Explanations Ziegler-Nichols method for the optimization of a PID controller: Parameters: Setpoint, P-Band, Reset time, Derivative time Response to maximum control output = 1.2/a Tangent on the inflection point = 2L Time = L/2 The point of intersection of the tangent with the respective axis will result in the parameters a and L.
  • Page 54 AMU-II Rescon Program List and Explanations 5.2.1.43 Control Parameters: if Parameter = Meas. value 5.2.1.43.10 Setpoint: 0.00–200 MΩ or 0.000–2000 µS 5.2.1.43.20 P-Band: 0.00–200 MΩ or 0.000–2000 µS 5.2.1.43 Control Parameters: if Parameter = Temperature 5.2.1.43.11 Setpoint: -30 to +130 °C 5.2.1.43.21...
  • Page 55 AMU-II Rescon Program List and Explanations 5.3 Relay Contacts 5.3.1 Alarm Relay: The alarm relay is used as cumulative error indicator. Under normal operating conditions the contact is active. The contact is inactive at:  Power loss  Detection of system faults like defective sensors or electronic parts ...
  • Page 56 AMU-II Rescon Program List and Explanations 5.3.1.2 Sample Flow: Define at which sample flow a flow alarm should be issued. 5.3.1.2.1 Flow Alarm: Program if the alarm relay should be activated if there is a flow alarm. Choose between yes or no. The flow alarm will always be indicated in the display, pending error list, saved in the message list and the logger.
  • Page 57 AMU-II Rescon Program List and Explanations 5.3.2 and 5.3.3 Relay 1 and 2: The function of relay contacts 1 or 2 are defined by the user. Note: The navigation in the menu <Relay 1> and <Relay 2> is identical. For reason of simplicity only the menu numbers of Relay 1 are used in the following.
  • Page 58 AMU-II Rescon Program List and Explanations 5.3.2.50 Delay: Duration, the activation of the alarm relay is retarded after the measured value has risen above/fallen below the programmed alarm. Range. 0–600 Sec 5.3.2.1 Function = Control upwards/downwards: The relays may be used to drive control units such as solenoid valves, membrane dosing pumps or motor valves.
  • Page 59 AMU-II Rescon Program List and Explanations Actuator = Motor valve Dosing is controlled by the position of a motor driven mixing valve. 5.3.2.32.22 Run time: Time needed to open a completely closed valve Range: 5–300 Sec. 5.3.2.32.32 Neutral zone: Minimal response time in % of the runtime. If the re- quested dosing output is smaller than the response time, no change will take place.
  • Page 60 AMU-II Rescon Program List and Explanations 5.3.2.7 Output/Control: Select operating mode of the controller output: Controller continues normally. Cont.: Controller continues based on the last valid value. Hold: Controller is switched off. Off: 5.3.2.24 daily The relay contact can be activated daily, at any time of a day.
  • Page 61 AMU-II Rescon Program List and Explanations 5.3.2.1 Function = Fieldbus The relay will be switched via the Profibus input. No further parame- ters are needed. 5.3.4 Input: The functions of the relays and signal outputs can be defined depending on the position of the input contact, i.e. no function, closed or open.
  • Page 62 AMU-II Rescon Program List and Explanations 5.4 Miscellaneous 5.4.1 Language: Set the desired language. Language German English French Spanish 5.4.2 Set defaults: Reset the instrument to factory default values in three different ways: Set defaults Calibration In parts Completely  Calibration: Sets calibration values back to default. All other values are kept in memory.
  • Page 63 AMU-II Rescon Program List and Explanations 5.4.6 LCD Contrast: Adjusts the contrast of the LCD display. 5.4.6.1 EV: Fine adjustment 5.4.6.2 SRR: Coarse adjustment 5.5 Interface Select one of the following communication protocols. Depending on your selection, different parameters must be defined.

  • Page 64: Default Values

    AMU-II Rescon Default Values Default Values Operation: Sensors Filter Time Const.: ................10 s Hold after Cal.:................300 s Relay Contacts Alarm Relay .............same as in Installation Relay 1/2............same as in Installation Input..............same as in Installation Logger Logger Interval:................ 30 min Clear Logger:.................. no...
  • Page 65 AMU-II Rescon Default Values Case Temp. high:............... 65 °C Case Temp. low: ................0 °C Relay 1/2 Function: ................limit upper Parameter: ...............Meas. value Setpoint:..............200 MΩ/1000 µS Hysteresis: ..............1 MΩ/10.00 µS Delay:................... 30 s If Function = Control upw. or dnw: Parameter: ...............Meas.
  • Page 66 AMU-II Rescon Default Values Load firmware:................no Password:..............for all modes 0000 Sample ID:................- - - - - - - - A-96.150.351 / 130525...

  • Page 67: Notes

    AMU-II Rescon Notes Notes A-96.150.351 / 130525...
  • Page 68 Swan Products - Analytical Instruments for: Swan is represented worldwide by subsidiary companies and distributors and cooperates with independent representatives all over the world. For contact in- formation, please scan the QR code. Swan Analytical Instruments ∙ CH-8340 Hinwil www.swan.ch ∙ swan@swan.ch AMU-II Rescon...

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