User manual Elgra 4 V03
Contents
1. buttons enter the exact weight of the egg and press the next button Press the finish button to confirm the entered weight and to finish the calibration By touching the cancel button the data inside the controller remains unchanged and no calibration is performed Remove the egg from the load cell UM ELGRA4 03 E 11 2008 Calibration Loadcell i lew Galibration ine tuning Finetuning Loadce Increasel 3 FINE TUNING LOAD CELLS The alongside screen is not only used for calibrating of a load cell but can also be used for fine tuning load cells In case of fine tuning it is noticed that one of the load cells continuously weighs eggs a little bit too heavy or too light When you want to fine tune a load cell you first need to know the deviation of the particular load cell Determine this by weighing an egg with a know weight several times on the particular load cell See or When the deviation between the real and the measured weight is determined go to the fine tuning calibration screen By touching one of the load cell buttons this load cell will be fine tuned First the Calibration load cell screen pops up Select the Fine button for fine tuning the load cell In the fine tuning load cell screen press the Increase or Decrease button to increase or decrease the weighing signal By touching the Increase button the weighed signal of the load cell is increased with 0 01 gram By touching the Dec2. ADJUSTMENTS O rinzen SERVICE MENU 2 LC data After touching this button the Load cell data screen appears In that screen it is possible to view the weighing signals from the load cells during running of the system including the 0 weighing signals Static LC test After touching this button the Static load cell test screen appears In that screen it is possible to test the individual load cells when the system is not running Dynamic LC test After touching this button the Dynamic load cell test screen appears In that screen it is possible to test the individual load cells when the system running LC reset After touching this button the Load cell reset screen appears In that screen it is possible to set the zero point of the load cells Calibration After touching this button the Calibrating load cells screen appears In that screen it is possible to calibrate the load cell by weighing and entering the weight of an egg with a known weight Besides calibrating in this screen it is also possible to fine tune load cells to eliminate small continuous deviations between measured weight and real weight of eggs See Fine tuning load cells for fine tuning instructions Raw data After touching this button the Raw data screen appears In that screen the digital signals of the weighing printed circuit board to the PLC is visualized This screen is intended to be used by Prinzen engineers for trouble shooting Dia
3. gnostics After touching this button the Diagnostics screen appears In that screen the data for correcting the digital signals of the weighing printed circuit board is visualized This screen is intended to be used by Prinzen engineers for trouble shooting Page 78 of 78 USER MANUAL ELGRA 4 UM ELGRA4 03 E 11 2008 totalw Zerow result LOAD CELL DATA SCREEN a Oa a i oon a OG During normal running of the Elgra here it is ee a ee possible the see the 0 weighing zerow and the egg weighing signals totalw from the load cells in grams The result is the actual weight of the egg and is also shown in the i O ACA O fate I A A p A O ae O AA A p foe A p foe ate STATIC LOAD CELL TEST With the static load cell test it is possible to check if the load cells are functioning correct First stop the system before performing the Static load cell test I 1 By first pressing the Tare button the signals from all load cells are reset to 0 After this it is possible to test the load cells with an egg with a known weight Put this egg on one of the load cells and press the Test button The weight on the display in grams must be the same as the weight of the egg mor M h mH h h mm D G G G G DYNAMIC LOAD CELL TEST With the dynamic load cell test it is possible to check if one load cell continuously measures the same weight when an egg with a known weight several times passes this load cell It
4. ions with the system Leave the weighing heads on the load cells Leave the power on Make sure there is no weight on the load cell and do not touch them ATTENTION Switching OFF the power during load cell reset may damage the load cell controller UM ELGRA4 03 E 11 2008 Loadce Calibration Loadcell 1 lew Calibration inetuning Calibration Loadcell i Jake sure there is no object Loadcell 1 then press next Calibration loadcell i CALIBRATING LOAD CELLS When a load cell is replaced first this load cell need to be reset see for resetting a load cell After resetting the new load cell needs to be calibrated By touching one of the load cell buttons this load cell will be calibrated During calibration screens pop up Follow the instructions on the screens to perform correct calibration Touch the load cell button for the load cell you want to calibrate Select the New button to perform a calibration Make sure there is nothing present on this load cell and press the next button Place an egg with a know weight on the load cell A heavy egg of at least 70 grams is necessary Press the next button OTL Lay an egg with known weight on loadcell 1 then press next ADJUSTMENTS on Loadcell 1 Onl A hans js ale ASS Next Calibration Loadcell 1 Set new calibration finish cancel operation Page 82 of 82 USER MANUAL ELGRA 4 O rinzen With the and
5. is also possible to check if all load cells measure the same weight when this eggs passes all 6 load cells By touching one of the load cell buttons this button illuminates It is possible to select more load cells All selected load cells will illuminate After this press the Test button to pop up a screen that shows the values measured by the selected load cells After starting the system the weight in grams of the passing eggs on the selected load cells are scrolling through this screen By touching the reset button all the values on the screen are reset to 0 ADJUSTMENTS ne Loadcell Res setting loadcell this will be taking approximately 100 seconds please wait 0 Pam an Page 80 of 80 USER MANUAL ELGRA 4 O rinzen LOAD CELL RESET The signal that the load cell sends to the weighing printed circuit board is influenced by temperature humidity of the environment material stress etcetera When the complete system is moved or a load cell is replaced the load cells need to be reset Beside this the zero point of the load cell signal changes anyway in the course of time So once in a while the load cells need to be reset By touching one of the load cell buttons this load cell will be reset Resetting of a load cell takes approximately 100 seconds Because of this a screen pops up asking you to wait As long as this screen is active do not perform any act
6. rease button the weighed signal of the load cell is decreased with 0 01 gram When the weight of egg is for example 70 grams but the load cell measures 70 1 grams touch the decrease button 10 times to correct the weighing signal into 70 grams ADJUSTMENTS O rinzen RAW DATA SCREEN TIP The raw data screen is intended for advanced users of the system like Software engineers or Prinzen Service engineers When contacting Prinzen service for trouble shooting you may be asked to give the information in the raw data screen a G G G G G nOD NDD N M h M h i M eernebrhehrehe lll cell ell eel eel min fa gi Mi He vow oe ww In the raw data screen the digital signals of the weighing printed circuit board to the PLC is visualized Touch the test button to view the digital signals When no egg is present on a particular load cell the digital signal of this load cell should normally be in between 1000 and 2000 When an egg is placed on a load cell the digital signal on the screen must change Directly after a load cell reset the digital signal should be in between 1400 and 1500 When the signal is below 1000 or above 2000 perform a load cell reset DIAGNOSTICS SCREEN TIP The diagnostics screen is intended for advanced users of the system like Software engineers or Prinzen Service engineers When contacting Prinzen service for trouble shooting you may be asked to give the information in the diagnostics sc
7. reen mon fa gi Mi He The values in the diagnostics screen are intended to be used by software and service engineers from Prinzen for troubleshooting The values for offset correction and gain may differ a lot Typical values are Offset Around 3500 for a new load cell Correction Around 1000 Gain In between 8800 and 11000 Page 84 of 84 USER MANUAL ELGRA 4 UM ELGRA4 03 E 11 2008
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