Summary of Contents for KEM FAU 50
- Page 1 Manual FAU 50 from version no. V03-01.99 Certified according to DIN EN ISO 9001...
- Page 2 Version Manual-Version FAU_M_EN_170308_E004 SW-Version This manual is valid for Main SW: V03-01.99 and higher Version: FAU_M_EN_170308_E004...
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Page 3: Table Of Contents
Index Index GENERAL ..............................5 1.1. Features ..............................5 1.2. Operating Principle ............................. 5 OPERATION ............................... 6 2.1. Measuring Mode ............................6 2.2. Parameter Levels ............................6 2.3. Parameters ..............................6 2.3.1. Entering Numerals ............................7 2.3.2. Chosing from Pre-selections ........................8 PROGRAMMING ............................ - Page 4 Index 4.2. Operating Priciple of the Control Inputs and the Outputs ................. 20 4.2.1. RESET Control Input (terminals 11/7) ...................... 20 4.2.2. HOLD Control Input (terminals 12/7) ......................20 4.2.3. Divider Output (terminals 13/14) ....................... 20 4.2.4. MAX Limit (terminals 15/16) ........................20 4.2.5.
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Page 5: General
General General The FAU is a microprocessor-based unit to convert output frequencies of KEM-Amplifiers into an analogue signal. You may chose between two signals: 0/4 to 20 mA potential-free load independent current signal • 0/2 to 10 V potential-free voltage signal •... -
Page 6: Operation
Operation Operation The FAU is operated via a front-panel touch keyboard and a two-line LCD display. In this manual the four keys are shown as follows: top lefthand key top righthand key bottom lefthand key bottom righthand key First take a look at the menu structure of the FAU. Before starting to programme real values, press the keys as described below, observe how the display changes and compare it with the menu structure. -
Page 7: Entering Numerals
Operation 2.3.1. Entering Numerals line: Description of the present parameter line: Current value, the cursor blinks on the first decimal digit Each pressing will move the cursor in righthand direction. When the cursor has reached the last decimal digit, the next pressing will move the cursor back to first digit. To scan 0 to 9 for the present digit. -
Page 8: Chosing From Pre-Selections
Operation 2.3.2. Chosing from Pre-selections The FAU offers you pre-selections for some parameters like units or analogue offset. pre-selection: litres per minute To scan the pre-selections for the present parameter. When the desired default appears, enter with Summary of the pre-selections Totals Rate l/min... -
Page 9: Programming
K-Factor of the Flow Meter Each KEM Flow Meter is delivered with a calibration record, which shows the average K-factor of the flow meter. This factor defines the number of pulses per litre over the entire measuring range. In addition, the record contains various K-factors for certain flow values. -
Page 10: Unit For Flow Rates
Programming 3.1.2. Unit for Flow Rates To display measuring results in the corresponding unit, chose from pre-selections for volumetric and mass units. In the measuring mode, the unit is only displayed with volume and mass flow. pre-selection: litres per minute to go through the pre-selections. -
Page 11: Density Of The Measuring Medium
In case you selected a volumetric unit under chapter 3.1.2, the FAU will now skip this parameter. However, with mass-related units the FAU requires you to enter the density of the measuring medium. KEM Flow Meters detect the volume flow. The FAU can calculate the corresponding mass flow considering the density, provided that the density is constant. -
Page 12: Gate Memory
Programming 3.1.5. Gate Memory This parameter determines the number of measurements which will be considered for calculating the actual measuring frequency (the response time of the measuring results depends on the gate time setting). With n > 0, the FAU calculates an average value considering the last n measurements and the actual measurement. -
Page 13: Analogue Offset: Minimum Level Of The Analogue Output
Programming 3.2.1. Analogue Offset: Minimum Level of the Analogue Output You may chose between an absolute minimum and a minimum shifted by 4 mA or 2 V. Enter with , after that the next parameter appears. 3.2.2. Scaling the Analogue Output You may assign the entire range of the analogue output to a working flow rate by entering a start and final value for the analogue output. -
Page 14: Response Time Of The Analogue Output
Programming 3.2.3. Response Time of the Analogue Output The FAU can convert the measuring frequency into an analogue signal based on the incoming frequency or based on the "calmed" frequency (see chapter 3.1.5 »Gate Time« and 3.1.6 »Gate memory«). Example: Due to periodic flow rate fluctuations the FAU shall convert the calmed frequency calculated via "Gate time"... -
Page 15: Pulse Time For External Counters
Programming 3.3.3. Pulse Time for External Counters Depending on its input stage and type, the external counter may require a certain pulse time to identify the output pulses of the FAU. With the present parameter, you can adapt the pulse time to the external counter. This setting will not affect the integrated totaliser of the FAU. -
Page 16: Limit On/Off
Programming 3.4.1. Limit ON/OFF If you do not need the limit values for your measuring task or only occasionally, you may deactivate them. select ON/OFF confirm input The next screen appears: continue with limit programming terminate limit programming If you have selected for »Exit«, you can press to go to the next main level aufrufen. -
Page 17: Flow-Limit Min
If the FAU was turned off now, all parameters would be lost again. This would require a new programming of the FAU each time it had been turned off. You should therefore send the FAU back to KEM to have the battery replaced. -
Page 18: Measuring Mode
Measuring Mode Measuring Mode The FAU offers you versatile possibilities of evaluating your measuring results: • Various possibilities of displaying and monitoring the measuring results Analogue output 0/4 to 20 mA or 0/2 to 10 V • • Frequency inputs and control outputs 4.1. -
Page 19: Pulse Counter And Totalizer With Unit
Measuring Mode 4.1.4. Pulse Counter and Totalizer with Unit This display shows total pulses and incoming pulses of the flow meter. Pressing while this display is selected will reset the totaliser. A reset can also be realized with the control input "RESET". line: incoming pulses unscaled and state Limit MAX (+ = exceeded, –... -
Page 20: Actual Flow With Uunit And Analogue Output In Percent
Measuring Mode 4.1.7. Actual Flow with uUnit and Analogue Output in Percent line: scaled flow rate with unit line: analogue output in percent 4.2. Operating Priciple of the Control Inputs and the Outputs The FAU has two frequency inputs and two control inputs which can influence different outputs and the internal counters. - Page 21 Forward/Bachward Output (terminals 3/4) 4.2.9. Pickup Supply (terminals 3/4) This terminal provides a supply voltage of 12 V DC for KEM Pickups or Amplifiers. The current is restricted to 20 mA! 4.2.10. Frequency Inputs CH1 and CH2 (terminals 6/7 and 8/7) Inputs signals: 3 to 5,000 Hz –...
- Page 22 Specifications Specifications 5.1. Technical Data Linearity 0.015 % of final value Temperature Drift 0.050 % per 10 K Residual Ripple 0.050 % of final value Adjustable Range Depending on programmed K-factor Protection Class IP20 Terminals shock-protected as per VBG4 and VDE0106 part 100 Allowable Ambient Temperature 0 °C up to +45 °C [+32 °F up to +113 °F] Supply Voltage...
- Page 23 30 V DC, 50 mA low-inductive emitter +12 V DC supply voltage for KEM-Pickups or -Amplifiers, max. 20 mA frequency input CH1, NAMUR or voltage level 0 V potential reference for external supply and control inuputs HOLD and RESET frequency input CH2, NAMUR or voltage level...
- Page 24 Specifications 5.3. Connection Schemes Version: FAU_M_EN_170308_E004...
- Page 25 T. +49 8131 59391-100 T. +49 9941 9423-37 F. +49 8131 92604 F. +49 9941 9423-24 sales@kem-kueppers.com service@kem-kueppers.com More distributors and partners can be found at: www.kem-kueppers.com Original KEM document: FAU_M_EN_170308_E004 Copyright KEM, Subject to change without notice Version: FAU_M_EN_170308_E004...
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