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AVL F-FEM-CNT Operating Manual

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03/2014
AT1086E, Rev. 14
User´s Guide
F-FEM-CNT
OPERATING MANUAL

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Summary of Contents for AVL F-FEM-CNT

  • Page 1 03/2014 AT1086E, Rev. 14 User´s Guide F-FEM-CNT OPERATING MANUAL...
  • Page 2 The contents of this document may not be reproduced in any form or communicated to any third party without the prior written consent of AVL. While every effort is made to ensure its correctness, AVL assumes no responsibility neither for errors and omissions which may occur in this document nor for damage caused by them.

  • Page 3: Warnings And Safety Instructions

    The product may only be used and operated by qualified personnel capable of observing the necessary safety precautions. All accessories and equipment used with the product must be supplied or approved by AVL. The operating prin- ciple of this product is such that the accuracy of the measurement results depends not only on the correct operation and functioning of the product, but also on a variety of peripheral conditions beyond the control of the manufacturer.
  • Page 4 F-FEM-CNT — User’s Guide...

  • Page 5: Grouped Safety Messages

    Make sure that the device is supplied with the correct supply voltage and safe power isolation of the supply voltage is guaranteed. NOTICE Always place the device in a position that allows air to circulate freely through the device’s venting aperture. F-FEM-CNT — User’s Guide...
  • Page 6 F-FEM-CNT — User’s Guide...

  • Page 7: Table Of Contents

    Data Transfer between Test Bed and PUMA Open System ..........15 Visualization ........................... 16 2.4.1 Seven Segment Display....................16 Cascade ..........................17 F-FEM-CNT Block Diagram....................17 3 Installation ........................19 Scope of Supply ........................19 Mechanical Installation ......................20 3.2.1 External Dimensions, Space Requirement ...............
  • Page 8 Debug/JTAG Connection: X27 ..................49 4.4.6 IEEE1394 Network: X21 ... X23 ..................50 5 Options ..........................51 Repeater..........................51 F-FEM-DIO ..........................52 6 Appendix .......................... 53 Technical Data........................53 CE-Conformity ........................54 7 Glossary and Abbreviations ................... 55 Index................................57 F-FEM-CNT — User’s Guide...

  • Page 9: What You Should Know

    Using an F-FEM-CNT, analog signals (e.g. speeds, frequencies, etc.) can be acquired and transferred to the PUMA Open system. The F-FEM-CNT is equipped with 4 interfaces (SUB D) and has 6 independent counter channels. Different types of sensors for the acquisition of different signals can be connected to these interfaces.

  • Page 10: About This Documentation

    PUMA Open channels (normnames) and use them in PUMA Open. Information This documentation does not and cannot replace adequate training. The F-FEM-CNT manual supports you in planning and installation as well as in your daily work at the test bed. It assumes that you are familiar with:...

  • Page 11: Typographic Conventions

    What you should know This manual documents the I/O component when using the F-FEM-CNT in a test Contents & Scope bed system and describes the hardware used: Connector pin out  Power supply  Grounding and shielding  Sensor types ...

  • Page 12: We Want To Hear From You

    We want to hear from you Your comments and suggestions help us to improve the quality and practical relevance of our manuals. If you have any suggestions for improvements, please send them to: docu@avl.com We look forward to hearing from you! F-FEM-CNT — User’s Guide...

  • Page 13: General

    General General Performance Data The F-FEM-CNT offers a broad range of performance features, with regret to data acquisition rate, accuracy and resolution etc. Furthermore, the use of the F-FEM-CNT minimizes the installation effort compared to other data acquisition systems. The main application of the Fast Front End Modules is in the area of engine test beds, as well as in all types of vehicle testing.

  • Page 14: System Environment

    3..Engine test bed (engine, dyno) 4..F-FEM-AIN or F-FEM-AIS (electrically isolated), connected to the PUMA Open system via F-FEM-CON 5..F-FEM-DIO, connected to the PUMA Open system via F-FEM-CON 6..F-FEM-CON directly connected to the PUMA Open system F-FEM-CNT — User’s Guide...

  • Page 15: Data Transfer Between Test Bed And Puma Open System

    Angle pulses are recorded by sensors on the engine test bed (directly at/in the engine). These signals are converted into speeds in the F-FEM-CNT and are transferred as actual values to the PUMA Open system via the IEEE 1394 bus.

  • Page 16: Visualization

    General Visualization The AVL PUMA Open system visualizes the data sampled by the F-FEM-CNT by using the Windows-based application POI (PUMA Operator Interface). 2.4.1 Seven Segment Display The seven-segment display shows the F-FEM number, according to parameter- ization. A summery of the numbers displayed with their meaning can be found in Tab. 1.

  • Page 17: Cascade

    General Cascade The F-FEM-CNT is part of a family of Front End Modules that operate together on a network: F-FEM-DAC for analog output F-FEM-AIF for analog input F-FEM-AIS for analog measurement with electrical isolation F-FEM-AIN for analog measurement without electrical isolation...
  • Page 18 General F-FEM-CNT — User’s Guide...

  • Page 19: Installation

    Installation Scope of Supply Information Normally, the F-FEM-CNT is delivered in a cabinet with the wiring already done. Component parts must only be exchanged in the case of replacements or system extensions.. Please check the contents with the items as indicated following.

  • Page 20: Mechanical Installation

    The required mounting space on the mounting panel is 55 mm x 264 mm. The mounting depth is 180 mm. With the plugs connected it is 245 mm. W = 55 D = 180 Fig. 5 External dimensions F-FEM-CNT — User’s Guide...

  • Page 21: Fixing The Module At The Din Rail

    Installation 3.2.2 Fixing the Module at the DIN Rail The F-FEM-CNT has been designed for top hat rail mounting (DIN rail; TS35 according to DIN EN 50022). For mounting/dismounting, you need a screw driver size 6. Fig. 6 Fixing the Module at the DIN Rail Use a screw driver as a lever and pull down the module locking (1).

  • Page 22: Connections

    If the power supply has been switched on and the pin assignment is correct, characters appear on the seven-segment display on the front side of the F-FEM-CNT. (Please, see Seven Segment Display on page 16) Please check the seven-segment display, if power is switched on.

  • Page 23: Ieee1394 Wiring

    3.3.2.1 Cable Design NOTICE For wiring the IEEE1394 bus on the AVL F-FEM, please only use the special cables! (See Tab. 3 on page 23.) Other cables from other manufacturers or office supply or multimedia stores must not be used, as these would lead to various network problems!

  • Page 24: Recommended Bus Topology

    The maximum number of parameterized F-FEM (between 22 and 40) and the maximum cable lengths between the different nodes (20 or 30 m) depend on the installed PUMA Open version and licence option (basic, standard, high-perfor- mance). F-FEM-CNT — User’s Guide...

  • Page 25: Mechanical Layout Of A Cable Routing

    Installation Information More details about maximum number of channels, sampling rates and network-delay times see the release notes of the according automation system or contact the AVL pruduct management. 3.3.2.4 Mechanical Layout of a Cable Routing NOTICE Please do not undershoot the minimum bending radius R of the cables! Minimum bending radius: (see Fig.

  • Page 26: Grounding And Shielding

    Please regard the following points: – The F-FEM-CNT is electrically isolated from the 24 V DC supply. For safety purposes, the case is connected to the ground via a PE and via the DIN rail (to avoid radio frequency interferences). The PE is carried in the power supply cable.
  • Page 27 Fig. 13 Mounting of ground braid at ground terminal The following materials are recommended for grounding:  EX0441 Ground braid: tin-plated Cu 10 mm (rolled) EU1675 Ground terminal 10 mm EU2168 Pin-type cable socket 10 mm F-FEM-CNT — User’s Guide...
  • Page 28 Installation Fig. 14 Example: Grounding when using standard cabling F-FEM-CNT — User’s Guide...
  • Page 29 Installation Fig. 15 Example: Grounding when using a fiber optic link F-FEM-CNT — User’s Guide...
  • Page 30 Installation Fig. 16 Example: Grounding when using a fiber optic link and split grounds F-FEM-CNT — User’s Guide...

  • Page 31: Shielding

    The ground wire minimizes the effects of ground loops. – All unused connectors should be protected with a dummy plug (con- ductive cover or the connectors or connector housings which are part of the scope of supply). F-FEM-CNT — User’s Guide...

  • Page 32: Software Installation

    The firmware has already been installed. The firmware necessary for operation can be loaded by the automation system during the initialization phase (chapter "The F-FEM Firmware Download Manager (FFDM)" in F-FEM Parameterization, please see Secondary literature on page 11). F-FEM-CNT — User’s Guide...

  • Page 33: Operation

    The input circuits are shown below to help you choose the appropriate input for each sensor type. 4.1.1 Input Circuit for Digital Input Fig. 18 Input circuit for digital input The pin assignment above also applies to X18, X29 and X30. F-FEM-CNT — User’s Guide...

  • Page 34: Input Circuit For Inductive Pick-Up

    Inc0+ X17/18 Zero Track Inc0- X17/8 Inc1+ X17/21 Track A Inc1- X17/9 Inc2+ X17/22 Track B Inc2- Fig. 20 Input circuit for incremental rotary encoder The pin assignment above also applies to X18, X29 and X30. F-FEM-CNT — User’s Guide...

  • Page 35: Description Of Function

    (low-pulse) is a falling edge. Signal The evaluation of levels to countable pulses can happen either as: Single Edge Evaluation on page 36, or as  Multi Edge Evaluation on page 36.  F-FEM-CNT — User’s Guide...

  • Page 36: Single Edge Evaluation

    90°) impact the measurement signal in form of speed fluctuations and jitter (see red arrows). To minimize these impacts use the incremental (RS422) input, whenever possible. Try to avoid the digital input, because it can increase the jitter due to different high-low edge transistions. F-FEM-CNT — User’s Guide...

  • Page 37: Toothed Disk With N-2 Teeth

    2) is important for the correction factor, and therefore this method is also called "n-2". The counter channels 5 and 6 and the zero track of the incremental encoder do not have this built-in recognition/correction. Fig. 22 Toothed disk with 60-2 teeth F-FEM-CNT — User’s Guide...

  • Page 38: Toothed Disk With N-1 Teeth

    This speed limit is based on a 35-1 teeth disk. For a toothed disk with other teeth count use the frequency value related to the speed limit to calculate the rpm-limit (in inverse proportion to the tooth count ratio). F-FEM-CNT — User’s Guide...

  • Page 39: Block Diagram Of Counter Channels

    Operation 4.1.8 Block Diagram of Counter Channels Fig. 23 Block diagram of counter channels F-FEM-CNT — User’s Guide...

  • Page 40: Parameterization

    The total error is determined by the reference error plus the quantization error. The total error tends to come closer to the reference error if measuring times are very long. Total Error = Reference Error + Quantization Error F-FEM-CNT — User’s Guide...
  • Page 41 The following figures show how the quartz reference and the measuring time influence the error and the accuracy. Fig. 24 Measuring error dependent on the measuring time Fig. 25 Absolute speed error as a function of the speed and the update rate F-FEM-CNT — User’s Guide...
  • Page 42 For measurements with an incremental encoder, only the quartz error is relevant. Fig. 26 Pulse duration measurement F-FEM-CNT — User’s Guide...
  • Page 43 Standstill recognition must thus be performed by the automation system. The threshold for the zero speed can be adjusted to meet the requirements. F-FEM-CNT — User’s Guide...

  • Page 44: Sensor Inputs

    Cut-off frequency for all 3 sensor types Tab. 5 Sensor inputs Sensor Type Cut-off Frequency Unit Incremental Encoder Digital Input Inductive (at 20 V Tab. 6 Cut-off frequencies of the input circuits for the various sensor types F-FEM-CNT — User’s Guide...

  • Page 45: Pin Assignment

    Operation Pin Assignment 4.4.1 Location of Plug Connections Fig. 28 F-FEM-CNT, front view F-FEM-CNT — User’s Guide...

  • Page 46: Sensor Inputs: X17, X18, X29, X30

    = pin without internal connection Shielding Shielding Shielding Shielding Shielding Shielding Shielding Shielding Case Shielding Shielding Shielding Shielding Tab. 7 Sensor inputs If two sensors are connected at X17 or X18, two cables lead into the connector housing. F-FEM-CNT — User’s Guide...

  • Page 47: Power Supply: X11

    Fig. 30 Power supply: X11 Signal Description GND_24 Ground Protective ground + 24 V + power supply Case Shielding Shielding Tab. 8 Pin assignment F-FEM-CNT — User’s Guide...

  • Page 48: Add-On Connection: X24, X25

    Operation 4.4.4 Add-on Connection: X24, X25 NOTICE Only prefabricated AVL cables may be used at the connectors X24 and X25. Fig. 31 Add-on connection: X24, X25 Signal at X24 Signal at X25 SLCK+ SLCK+ SCLK– SCLK– PL1+ PL2+ PL1– PL2–...

  • Page 49: Debug/Jtag Connection: X27

    No cable may be connected during regular operation.) Fig. 32 Debug/JTAG connection: X27 Signal at X27 DGND FLASH Ry/By FLASH WEn VDD out (3.3V) max. 50 mA DGND DGND WDDIS EMUn TRSTn Case Shielding Tab. 10 Pin assignment F-FEM-CNT — User’s Guide...

  • Page 50: Ieee1394 Network: X21

    4.4.6 IEEE1394 Network: X21 ... X23 NOTICE Only prefabricated AVL cables may be used at this connector. Only prefabricated cables have a screw-type locking, thus ensuring proper operation. See Cable Design on page 23. Fig. 33 IEEE1394 network: X21 ... X23...

  • Page 51: Options

    "black box" with only 3 network sockets for the IEEE1394 network. Each F-FEM module also acts as a repeater, even without power supply. Fig. 34 Example of a Repeater for IEEE1394 Description AVL Material Number IEEE 1394 Repeater TP08BB011B.01 Tab. 12 Device data F-FEM-CNT — User’s Guide...

  • Page 52: F-Fem-Dio

    Options F-FEM-DIO An F-FEM-DIO can be connected at X24 and/or X25 as extension to the F-FEM-CNT. For details, please refer to the AVL Operating Manual F-FEM-DIO AT1087E. Fig. 35 Module F-FEM-DIO Description AVL Material Number F-FEM-DIO TP08BB010A.01 Tab. 13 Device data...

  • Page 53: Appendix

    4 sensor sockets with 3 signal conditionings each 6 counter channels Interfaces 3 IEEE1394 bus interfaces 2 Add-on interfaces to F-FEM-DIO Cable lengths IIEEE1394 max. 20 m, for longer cables: repeater Add-on max. 15 m Weight 1.06 kg Tab. 14 F-FEM-CNT — User’s Guide...

  • Page 54: Ce-Conformity

    2006/95/EC Low Voltage Directive met with the following standards complied: EN 61010-1:10 Safety Requirements for Electrical Equipment, for Measure-  ment, Control and Laboratory Use. F-FEM-CNT — User’s Guide...

  • Page 55: Glossary And Abbreviations

    Glossary and Abbreviations Glossary and Abbreviations A name for the F-FEM-DIO. It has no IEEE1349 network connection but must be Add-on connected to an F-FEM-DAC, F-FEM-CNT or F-FEM-CON using the add-on interface. Acronym for Fast-Front End Module. F-FEM These include all FEM that belong to the IEEE1394 family.
  • Page 56 Glossary and Abbreviations F-FEM-CNT — User’s Guide...

  • Page 57: Index

    Intended Application … 9 Intermittent flashing dots … 16 Low-inductance … 31 Main area of application … 13 Measurement … 42 Measuring time … 40 On-board software … 43 Parameterization … 16 Pin assignment … 33 Pulse … 42 F-FEM-CNT — User’s Guide...
  • Page 58 Index F-FEM-CNT — User’s Guide...
  • Page 60 FOR FURTHER INFORMATION PLEASE CONTACT: AVL List GmbH, Hans-List-Platz 1, 8020 Graz, Austria Phone: +43 316 787-0, Fax: +43 316 787-400, eMail: info@avl.com, http://www.avl.com...

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