VAF instruments PEM2 Technical Manual
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VAF instruments PEM2 Technical Manual

For t-sense optical torque and tt-sense optical thrust and torque measuring systems
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Technical Manual
Instructions for installation,
operation and maintenance
662B
PEM2 TOUCH SCREEN
®
For T-Sense
®
TT-Sense
optical thrust and torque measuring systems
Publication nr
Supersedes
optical torque and
TIB-662B-GB-0616
TIB-662B-GB-0114

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Summary of Contents for VAF instruments PEM2

  • Page 1 Technical Manual Instructions for installation, operation and maintenance 662B PEM2 TOUCH SCREEN ® For T-Sense optical torque and ® TT-Sense optical thrust and torque measuring systems Publication nr TIB-662B-GB-0616 Supersedes TIB-662B-GB-0114...

  • Page 2: Table Of Contents

    INSTALLATION AND FIRST USE ..........7       To record nameplate data ................7   Installation diagram ..................8     Installation of the PEM2 touch screen ............9     Cable specifications ................... 13     OPERATING PRINCIPLES ............14    ...
  • Page 3     15.2 No torque signal ..................22     CERTIFICATES ................ 22     16.1 EMC classifications of the PEM2 ............22     DRAWINGS ................23     ABBREVIATIONS ..............29     SPARE PARTS ................. 29  ...

  • Page 4: Preface

    1. PREFACE 1.1 GENERAL The PEM2 touch screen is a microprocessor based instrument, which is able to fulfil standard torque, shaft speed and power calculations within narrow limits. Thrust and thrust/power calculations can be performed when thrust measurements are available.

  • Page 5: System Description

    2.2 SYSTEM SECURITY Besides checking the status of the torque measurement system the PEM2 system also checks itself continuously for program and configuration data integrity, normal program flow and power supply conditions. Alarm messages will be logged in a dedicated alarm screen.

  • Page 6: Technical Specifications

    Dispose of the packing material should be done according to the laws of the country where the equipment is installed, or according to the rules that are applicable on the vessel.  Be careful when unpacking the electronic equipment. The content is fragile.  Do not press on the PEM2 touch screen.

  • Page 7: Installation And First Use

    Modbus input and optional Modbus output cables to the touch screen. The 24 VDC wires for power supply should be connected at last. Note: There is no ON/OFF switch on the PEM2 touch screen. When the power supply is switched on these screens will turn on.

  • Page 8: Installation Diagram

    6.2 INSTALLATION DIAGRAM The PEM2 touch screen can be connected to the stator control box as shown in Figure 2 and Figure 3. The maximum number of touch screens, which can be connected by RS485 Modbus serial connection is two.

  • Page 9: Installation Of The Pem2 Touch Screen

    6.3 INSTALLATION OF THE PEM2 TOUCH SCREEN 1. Install the PEM2 touch screen in a control cabinet or control panel in the ECR or on the bridge, where it will be free as possible from moisture, large fluctuations of temperature and particularly of vibration shock.
  • Page 10 Figure 5 – Power supply and RS485 Modbus cable connection to PEM2 touch screen 4. Ensure that the Modbus cable is properly shielded and grounded as close as possible to the stator control box. The Modbus cable shield cannot be connected to the touch screen.
  • Page 11 ® 6. Only applicable if an additional (second) touch screen is connected to the T-Sense system. Additional touch screens are connected to the system as described in Figure 6. Plug in a DB9 male connector into the COM1 output port at the aft side of touch screen 1 and connect COM1 to the 5-pin terminal COM2 at touch screen 2 as described in Figure 6.
  • Page 12 Additional systems are connected to the COM1 output port as described in item 6 and Figure 6. From the COM1, DB9 connector on the backside of the touch screen you can communicate through Modbus with the PEM2 touch screen and read out the registers. The pin out of the connector is: ...

  • Page 13: Cable Specifications

    IC-09 IC-03 24 VDC 115 / 230 VAC 24 VDC Figure 7 – Specification of input and output cables at the stator control box and PEM2 touch screens Cable specification: IC-01 Integrated antenna cable 5m, VAF supply IC-02 Integrated stator cable 5m, VAF supply...

  • Page 14: Operating Principles

    This rotor part is connected wireless to the stator electronics in the control box. The stator electronics are connected to the PEM2 touch screen via RS485 Modbus. Full scale adjustment of the shaft speed bar graph range is programmed at VAF location.

  • Page 15: Operating Instructions Pem2 Touchscreen

    7.5 HOW TO OPERATE THE TOUCH SCREEN The PEM2 touch screen screens are designed in such a way that they are easy to operate and self explaining. By pressing the grey keys at the touch screen the next menu is selected or specific values can be changed.

  • Page 16: Main Menu

    Thrust & Torque sensor is applied an extra “Thrust” monitoring screen is added to the PEM2 system. This screen will show you total Thrust and Power values and the average Thrust/Power quotient during the last 1, 4 and 24 hours.

  • Page 17: Propulsion Data

    After resetting “Total Energy” and “Total Revolutions” the previous displayed values are lost. 7.5.4 Info Screen Figure 13 – Info Screen This screen is displaying all essential data in case you to have to contact VAF Instruments regarding ® your T-Sense torque measuring system.

  • Page 18: Settings Menu

    7.5.5 Settings menu Figure 14 – Settings Menu Screen This “Settings Menu” is accessible by entering the 4-digit password 1234 in the login screen. This screen is your entrance to adjustment of the bar graph ranges and date and time setting. 7.5.5.1 Bar Graph Range Settings Figure 15 –...

  • Page 19: Alarm Settings

    7.5.6 Alarm Settings Figure 17 – Alarm Screen In case the PEM2 touch screen detects that output data is missing the system will generate a pop-up screen showing the alarm message “Communication Fail”. Make sure that the cable connections are...

  • Page 20: Method Of Calculations

    7.6 METHOD OF CALCULATIONS Shaft power is calculated from the measured torque and the revolutions of the shaft.  Shaft power ∙ ∙ 9.945 = Shaft power [kW] = Torque [kNm] = rotations per minute [rpm] Total energy is calculated from the integrating shaft power over time ...

  • Page 21: Maintenance

    PEM2 can be done without any errors. Disconnect all the input and output wires. Store the PEM2 in a box in a cool and dry place, so that the PEM2 cannot be damaged. 12. MALFUNCTION AND SEND FOR REPAIR If the PEM2 stops working completely contact VAF Instruments for instructions.

  • Page 22: Trouble Shooting

    15. TROUBLE SHOOTING 15.1 PEM2 MALFUNCTION If the PEM2 does malfunction, power the PEM2 down, check all wiring and power the PEM2 back up again. This will restart the program. 15.2 NO TORQUE SIGNAL The connection between the PEM2 and the stator control box is broken.

  • Page 23: Drawings

    17. DRAWINGS Drawing 1 – 0897-1056...
  • Page 24 Drawing 2 – 0815-2003...
  • Page 25 Drawing 3 – 0815-2004...
  • Page 26 Drawing 4 – 0815-2014...
  • Page 27 Drawing 5 – 0815-2008...
  • Page 28 Drawing 6 – 0815-2013...

  • Page 29: Abbreviations

    18. ABBREVIATIONS PEM2 Touch screen for Modbus serial communication Efficiency Monitoring system including Signal Processing Unit for integration of flow meter PEM3 signals, GPS speed over ground, etc. SPU3 Signal Processing Unit, part of the PEM3 efficiency monitoring system Central Processing Unit...

  • Page 30: Warranty Conditions

    20. WARRANTY CONDITIONS 1. Without prejudice to the restrictions stated hereinafter, the contractor guarantees both the soundness of the product delivered by him and the quality of the material used and/or delivered for it, insofar as this concerns faults in the product delivered which do not become apparent during inspection or transfer test, which the principal shall demonstrate to have arisen within 12 months from delivery in accordance with subarticle 1A exclusively or predominantly as a direct consequence of unsoundness of the construction used by the contractor or as a consequence of faulty finishing or...
  • Page 31 4. Defects not covered by the guarantee are those which occur partially or wholly as a result of: A. non-observance of the operation and maintenance instructions or other than foreseeable normal usage; B. normal wear and tear; C. assembly/installation by third parties, including the principal; D.
  • Page 32 Revision 0616 Chapter 1.1 warning added Pictures/photos numbered and section links added.
  • Page 33 Vierlinghstraat 24, 3316 EL Dordrecht, The Netherlands Specifications subject to change without notice. P.O. Box 40, 3300 AA Dordrecht, The Netherlands VAF Instruments B.V. is an ISO 9001 Certified Company. T +31 78 618 3100 sales@vaf.nl, www.vaf.nl Agents and distributors in more than 50 countries.

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