Resume of Ralf Dedekind

 Contents

1. Training summary. *

2. Experience summary. *

3. Education Summary. *

4. Additional Professional Development Summary: *

5. Details of Additional Professional Development training. *

6. Personal Details. *

7. Position, Speed and tension Reference Chain for Winder *

8. Autostop Hardware Overview *

9. Autostop Software. *

9.1 Overview of the program. *

10. Software Modules. *

10.1 Feedback on Module. *

10.2 Look at Tension Module. *

10.3 Zero Speed Module. *

10.4 Calculation Module. *

10.5 Web Break Module. *

 

  1. Training summary.

    2. Trained as Electro-Mechanician (Millwright) and as Electrical Technician.

  2. Experience summary.

    3. Experience as Electrical Technician, Electronic Technician, Senior Electronic Technician and

    Systems Engineer Electronics.

  3. Education Summary.

    4. 1965–1971 Primary School Uelzen Dundee Natal , SA 1972–1976 High School Newcastle Natal , SA ….Subjects English, Afrikaans, Mathematics, Science, Geography, Technical Drawing. 1979–1980 Newcastle Technical Institute Natal , SA….Subjects T1..T2 Electrical, Eng. Science, Applied Mechanics, Mathematics, Electronics. 1981Vaal Triangle Technikon Transvaal , SA….Subjects T1.. T4 General Studies, Electrical Machines, Electronics, Electrical Engineering, Digital Techniques, Industrial Electronics.

  4. Additional Professional Development Summary:

    5. Additional / ongoing Professional Development in Electrical / Electronic Engineering , Management and Computer Technology.

    This has been mainly in the form of short training courses and self study.

     

  5. Details of Additional Professional Development training.

 

  1. Personal Details.

    2. Date and place of birth

    Date 14 January 1959 Place Town - Dundee Province - Natal Country - South Africa

    Country - South Africa

    Achievements

    Represented South Africa at the 14th World Scout Jamboree in Norway 1975. Awarded the "Mondi Paper General Managers Award for Innovation" in 1997 For designing and building an interface to convert an Obsolete Rolltrimmer System 9 inch Disc Drive to a 5.5 inch Disc Drive.

    Interests

    Family, Church, music, running, gardening, home repairs, computers, windsurfing, sailing, camping, hiking and fishing.

    Other Activities

    Sunday school teacher, Guitar music teacher.

     

  2. The following SECTION in not complete Position, Speed and tension Reference Chain for Winder

    3. Autostop Target SP: Main Ref 02: Loadshare SP 03: Tension SP

    Auto Manual Switch

    00 01 02 03

     

     

    The Rear Drum Drive (01) is speed controlled and the Master of the Winder. The machine’s base speed reference can be set in Manual Mode from a Speed Setting Rheostat and in Auto mode via the Speed Setting Rheostat and the Autostop System (00)

    When operating in Autostop mode (00) the Autostop system accelerates the Drive System up to the Main Reference Setpoint and then runs at this speed until it decelerates the Winder to reach Zero speed when the Set Length is reached.

    The Front Drum Roll (02) is torque controlled with a loadshare setpoint.

    The Brake Generator or Unwind Roll (03) operates in Tension Mode.

     

     

     

     

     

     

     

     

  3. Autostop Hardware Overview

    4. DH

    485

    bus

     

     

     

    IO

    bus

     

     

     

     

     

     

     

     

     

     

  4. Autostop Software.
    1. Overview of the program.

     

     

     

     

     

     

     

     

  5. Software Modules.
    1. Feedback on Module.

      2. If Axis_0 is not moving then program flow continues to execute this module.

      The above will occur when the move_status of Axis_0 = 0 i.e. The Axis is not moving.

      Then if Input_10 (ASR) Auto Speed Relay is energized (when the "Change" button is pressed on the benchboard, feedback is switched on, the move axis module is executed and Output_10(Indication for F/Back On module executed.)

      If Axis_0 IS moving then program flow branches to the END of the F/B module.

      The above will occur when the move_status of Axis_0 = 1 i.e. The Axis is moving.

       

    2. Look at Tension Module.

      3. This module looks at the Sheet (Paper) Tension.

      This Signal that should be connected to Flex_Analog_Input_1 and

      This raw value gets multiplied by minus 11.921 to return a percentage value of the Actual

      Tension. This Tension as a percentage

      Then gets compared in an If Expression and if it is

      Greater than 1 the "Tension On"output is set High and conversely

      And if it is less than 1 the "Tension On" output is set Low.

      (Digital Output 4)

       

    3. Zero Speed Module.

      4. This module detects Axis Zero Speed condition by using an If

      Expression to check when the Actual Speed is Less than 1 mpm.

      If the above condition is met Output 6 is switched ON.

      If the above condition is not met Output 6 is switched OFF.

      Output 6 is labeled "ZERO SPEED"

    4. Calculation Module.

      5. The length and position calculations are done in this module.

      This module during "Tension ON" calculates the Length by tracking the position. During "Tension off" the length is equated to the length at the time of Tension loss. The Actual Speed is also calculated in mpm by multiplying the speed from the Motion controller in m/s by 60.

       

    5. Web Break Module.

This module does the following:

Stores the length at the instant that the Tension went down. Then sets the Speed Target to 0 and executes an axis dynamic change to follow the target speed. Then waits for the Tension to go High and consequently redefines the actual position to the position at the time of break. Then waits for Auto Speed command input and in the event of an Auto Speed command input will set the axis dynamics to follow target.