KERN CXB Version 1.3
Contents
1. KERN amp Sohn GmbH WAAGEN GEWICHTE BALANCES WEIGHTS Ziegelei 1 Tel 49 0 7433 9933 0 D 72336 Balingen Fax 49 0 7433 9933 149 E Mail info kern sohn com Internet www kern sohn com Service manual Counting scales KERN CXB Version 1 3 4 2009 GB CXB SH e 0913 KERN CXB Version 1 3 4 2009 Service manual Counting scales Table of Contents Basic information Introduction General Information Error messages a RO N Explanation of display 5 1 Symbol indicator 6 Explanation of keyboard 7 External calibration 7 1 Calibration of non approval models CXB 7 2 Back to the original value of calibration 7 3 Calibration of approval models CXB M 8 Service mode access 9 Linearity calibration 10 Spec calibration 10 1 Reference values for capacity setting 11 Temperature calibration 11 1 Indoor air normal temperature calibration 11 2 High temperature calibration 11 3 Low temperature calibration 11 4 Check Delete temperature calibration data 12 Spare parts o O ON O G RB R O NON N a O O O 0 Vi N O CO CXB SH e 0913 1 Basic information Grundlegende Hinweise The device must be repaired only by trained specialist staff or personnel with professional formation such as a repair specialist accredited by law concerning verification The service manual is obligatory for repair work After repair original conditions of the device have to be restored Only original spare2. e Delete key e Call counting with tolerance control Store reference weights in memory Call stored reference weights e Addition in total memory e Call up total memory e Delete summation memory Enter reference weight through weighing Display reference weight stored last Enter target number of pieces Numeric entry reference weight Display reference weight stored last Enter target weight aaeoeeB i Zeroing key e Backto weighing mode Y 1 a U 2 Taring key Enter numerical tare gt 2 m e 8 CXB SH e 0913 7 External calibration 7 1 Calibration of non approval models CXB Before calibrating adjust the mini jumper SWA1 to ADJ position see chap 8 Observe stable environmental conditions A warming up time of 30 minutes is required for stabilization Operation Ensure that there are no objects on the weighing plate gt 0e PRE TARE Press the a key and keep it pressed down whilst simultaneously operating the 5 key Weight value of calibration weight is flashing on display However you may enter a value of your choice via the number keys is AT TARE l Carefully place calibration weight in the centre of the weighing plate Calibration will be carried out automatically after dead stop control Remove calibration weight during count down to zero The balance returns automatically into weighing mode An error
3. Piece Weight Pcs 30 000 XX XXXXXX full m value high temperature C internal value of full capacity e Putthe full capacity weight on the platter press key to calibrate full capacity value O After scale is stable it will reset back to zero automatically remove the weight mass from the platter before it resets back to zero then the procedures finished Put the weight mass on the platter again to check if the display showing the accurate weight If it s correct turn off the power then re adjust the mini jumper SWA1 to LOCK position CXB SH e 0913 19 11 3Low temperature calibration scales must be in the control room of low temperature Press 8 calibration mode Weight 0 000 key then press key to enter the temperature Piece Weight XX Pcs XXXXXX low temperature C zero internal value No weight on the platter press Weight 30 000 full capacity value key to calibrate zero Piece Weight Pcs XX XXXXXX low temperature C internal value of full capacity Putthe full capacity weight on the platter press key to calibrate full capacity value O After scale is stable it will reset back to zero automatically remove the weight mass from the platter before it resets back to zero then the procedures finished Put the weig
4. g 12kg in sum 21kg and input n value e g n 4 then press key Weight Piece Weight Pcs 04 1 XXXXXX input n value e g n 4 internal value of the phase G Add the 4 weight mass e g 12kg in sum 33kg and input n value e g n 4 then press key Weight Piece Weight Pcs 05 1 XXXXXX input n value e g nz4 internal value of the phase CXB SH e 0913 13 Add the 5 weight mass e g 3kg in sum 36kg and input n value e g n 1 then press key Weight Piece Weight Pcs 06 1 XXXXXX input n value e g n 1 internal value of the phase Press key CONFIRM key the buzzer beeps once Weight Piece Weight Pcs SYS UP Remove all the weight mass the scale will reset back to zero automatically then the procedures finished CXB SH e 0913 10 Spec calibration Before calibrating please adjust the mini jumper SWA1 to ADJ position After finish the calibration please re adjust the mini jumper SWA1 to LOCK position O Turn on the machine after the scale resets back to zero then press 8 key 1 key 7 key at the same time to enter the spec calibration mode Weight Piece Weight Pcs 03001 021XX 202053 rogram version dari keyboard default value core value
5. message will appear on the display should a calibration error occur or should the calibration weight be incorrect Turn balance off then restart it and repeat the calibration process The calibration should be made with the recommended calibration weight see chap 1 Technical data in the operating manual Note Use the key to exit calibration mode The balance returns to weighing mode 7 2 Back to the original value of calibration only non approval models O Press and hold G key followed by pressing 5 key until the scale is counting backward to zero then release it The scale will show the original value which is the value setting at the factory CXB SH e 0913 7 3 Calibration of approval models CXB M Before calibrating adjust the mini jumper SWA1 to ADJ position see chap 8 Observe stable environmental conditions A warming up time of 30 minutes is required for stabilization Operation Ensure that there are no objects on the weighing plate c Press 8 1 5 keys c Press key The display shows 0 000 c Press key The display shows 15000 Example Weight value of calibration weight is flashing on display Carefully place calibration weight in the centre of the weighing plate Press o key Calibration will be carried out automatically after dead stop control c Remove calibrat
6. of models setting 0 Non approval model External calibration is applicable 1 OIML approval model The display resolution should be set at 1 3000 External calibration is NOT applicable 4 Non approval model External calibration is NOT applicable After input spec press key not necessary to put the weight mass on the platter the calibrated weight value is the reference for the temperature calibration procedure The scale will be self tested and reset back to zero Press 8 key 1 key 5 key then press key to enter the temperature calibration mode see chapter 11 NOTES 1 The last number of full capacity value must be variable number can be fixed 0 2 The digit and location of preset calibrated value refer to the location of capacity digit 3 Input capacity 9d in order to run 9 times overload function 4 If max number of digit is 0 please input 0 b Reference values for capacity setting see chapter 10 1 16 CXB SH e 0913 10 1 Reference values for capacity setting A Weighing unit g CXB 3K0 2 CXB 6K0 5 CXB 15K1 CXB 30K2 CXB 3K1M CXB 6K2M A Weighing unit kg CXB 15K1 CXB 30K2 CXB 3K1M CXB 6K2M CXB 15K5M CXB 30K10M Weight 3 0018 Piece Weight Weight 30000 Pcs 6 00 45 Piece Weight 21910 1 Weight 60000 Pcs 1 5009 Piece
7. parts should be used Instructions about conformity evaluated scales Repair must be carried only at 100 compliance with the type approval A violation of this specification will result in a loss of the type approval After successful repair the balance will have to be reverified before it can be used again in a statutorily regulated field Das Ger t darf nur von geschultem oder beruflich ausgebildetem Fachpersonal 2 B eichrechtlich anerkannter Instandsetzer repariert werden Die Serviceanleitung ist bindend f r Reparaturen Das Ger t muss nach erfolgter Reparatur wieder in den Originalzustand zur ckversetzt werden Es d rfen nur Originalersatzteile verwendet werden Hinweis zu konformit tsbewerteten Waagen Reparatur darf nur in 100 iger bereinstimmung mit der Bauartzulassung erfolgen Ein Versto gegen diese Vorgabe f hrt zum Erl schen der Bauartzulassung Nach erfolgreicher Reparatur muss eine Nacheichung erfolgen um die Waage wieder im gesetzlich geregelten Bereich verwenden zu k nnen CXB SH e 0913 3 2 Introduction 1 There are 3 ways to rectify the linearity for setting the temperature calibration which can make the scale more accurate Inside air temperature normal temperature High temperature Low temperature It is adequate to only do the inside air temperature calibration Upon the customer s request we also offer the high temperature and low temperature calibration as well
8. 2 Sampling speed is also depended on the user s need 01 05 3 Linearity calibration capacity setting and temperature calibration can be set separately 4 Weighing unit g or kg depending on model 5 Tare range is full range tare General Information The newly manufactured scale without passing the calibration and setting process will automatically enter the linearity calibration mode After the linearity calibration procedure is done the program will automatically enter the Specification Setting Mode Zero Range The internal value should be in between 120 000 250 000 with the platter on and without any load check gt see chapter 10 Spec calibration Maximum Capacity The internal value should be over 300 000 when the scale is fully loaded When rubbing the tetragon the inaccuracy value should be smaller than 10 divisions Tare range is full range tare CXB SH e 0913 4 Error messages Non approval models E1 ZERO over 300 000 internal value E2 ZERO below 10 000 internal value Approval models E1 ZERO over the zero position in weight calibration 10 of full scale E2 ZERO over the zero position in weight calibration 1096 of full scale All models E4 ZERO is unstable E5 Turning on machine core value is under 0 E6 Core value is over 250 000 E7 Core value is below 120 000 OL gt The weighing range is exceeded NOTES e Non ap
9. Weight 51910 1 Weight 15000 Pcs 3 0018 Piece Weight 10010 1 Weight 30000 Pcs 3 0018 Piece Weight 20010 1 Weight 30000 Pcs 6 0045 Piece Weight 10011 1 Weight 60000 Pcs 1 5009 Piece Weight 20011 1 Weight 15000 Pcs 3 0018 Piece Weight 13010 1 Weight 30000 Pcs 0 3009 Piece Weight 23010 1 Weight 03000 Pcs 0 6018 Piece Weight 13011 1 Weight 06000 Pcs 31 5045 Piece Weight 23011 1 Weight 15000 Pcs 0 3009 Piece Weight 53011 1 CXB SH e 0913 03000 Pcs 12011 1 11 Temperature calibration Before calibrating please adjust the mini jumper SWA1 to ADJ position After finish the calibration please re adjust the mini jumper SWA1 to LOCK position 11 1 Indoor air normal temperature calibration scale will be self tested and reset back to zero Press 8 key 1 key 5 key then press key to enter the temperature calibration mode Weight Piece Weight Pcs 0 000 XX
10. XXXXXX indoor temperature C zero internal value No weight on the platter press key to calibrate zero Weight Piece Weight Pcs 30 000 XX XXXXXX full a value indoor temperature C internal value of full capacity e Putthe full capacity weight on the platter press key to calibrate full capacity value O After scale is stable it will reset back to zero automatically remove the weight mass from the platter before it resets back to zero then the procedures finished Put the weight mass on the platter again to check if the display shows the accurate weight If it s correct turn off the power then re adjust the mini jumper SWA1 to LOCK position NOTES 1 The procedures are for the scale without the temperature IC or for the scale in the normal temperature environment To achieve the accuracy of the scale please run the high temperature and low temperature calibration procedures The procedures for high temperature and low temperature are totally reversed CXB SH e 0913 11 2High temperature calibration gt scales must be in the temperature lab chamber Press 8 key 1 key 5 key then press key to enter the temperature calibration mode Weight Piece Weight Pcs 0 000 XX XXXXXX high temperature C zero internal value No weight on the platter press key to calibrate zero Weight
11. ht mass on the platter again to check if the display showing the accurate weight If it s correct turn off the power then re adjust the mini jumper SWA1 to LOCK position 11 4Check Delete temperature calibration data Press 8 key 5 key Weight Piece Weight Pcs Sho t 00 XXXXXX show temperature Press 6 Press delete it 20 2 or 8 temperature C internal value key to check the temperature calibration data 2 or 8 key to select the desirable data and double press key to CXB SH e 0913 12 Spare parts CXB SH e 0913 21 22 No Description Q ty 1 Switch on off 2 pin 2 X Power socket 3 Level 4 Buckle plug HP 13 9 Terminal Cover male 6 Round head screw M3 6 7 Round head screw M4 6 8 Round head screw TP2 3 8 9 Flat head screw M3 10 10 Round head screwTP2 4 16 11 Hexagon screw M4 12 12 Round head screw M4 25 W 10 13 Hexagon screw M4 16 14 Washer 6 13 15 1 4 spring washer 16 Nut 3 6 17 Battery Cap Foam 18 Power nameplate 230V AC 19 Power sticker 20 Dust cover 21 FD aluminum support 22 FD aluminum bracket 23 Battery 6V 4AH 24 X2 capacitor 0 1uF 275V P 15 25 Wire Fixer 26 Front panel 27 Rear panel 28 Ke
12. ion weight during count down to zero The balance returns automatically into weighing mode An error message will appear on the display should a calibration error occur or should the calibration weight be incorrect Turn balance off then restart it and repeat the calibration process The calibration should be made with the recommended calibration weight see chap 1 Technical data in the operating manual 10 CXB SH e 0913 8 Service mode access Access to the service mode is controlled by jumper SWA1 on the main PCB The jumper has two positions LOCK which prevents access to the service mode and ADJ which allows access to the calibration and configuration routines SWA 1 jumper is located adjacent to the RF screening cover of the main PCB Place your balance upside down and remove seal cap For calibration and configuration routines the jumper SWA1 must be set to position ADJ Sealing mark unlocking switch Position of unlocking switch Status To the right Unlock the balance for calibration process ADJ To the left Verification position calibration locked LOCK 11 CXB SH e 0913 9 Linearity calibration Before calibrating please adjust the mini jumper SWA1 to ADJ position After finish the calibration please re adjust the mini jumper SWA1 to LOCK position Divide the capacity into 5 sections before linearity calibration E g CXB 30K2 capac
13. ity 30kg Divide it into 5 phases 3kg 6kg 12kg 12kg 3kg The total calibrated weight should be between 1 1 1 25 times of the capacity weight E g 3kg 6kg 12kg 12kg 3kg 36kg are 1 2 times of 30kg Turn on the machine after the scale resets back to zero then press 8 key 1 key 6 key at the same time to enter the linearity calibration mode Please press 9 key to pass over this linearity calibration mode Weight Piece Weight Pcs 00 L XXXXXX key in n value p core value display the number of times of calibration zero internal value n the calibrated value of phase X the calibrated value of 1 phase n multiplier 2 3 4 of 1 calibration weight 1 phase n gt must be an integral Press key Weight Piece Weight Pcs 01 1 XXXXXX internal value of the phase CXB SH e 0913 Put the 1 weight mass e g weight mass 3kg n 1 then press key Weight Piece Weight Pcs 02 1 XXXXXX input i value internal value of the phase Add the 2 weight mass e g 6kg in sum 9kg and input n value e g n 2 then press key Weight Piece Weight Pcs 03 1 XXXXXX input n value e g n 2 internal value of the phase Add the 3 weight mass e
14. proval models CXB After E1 E2 or E4 is displayed press u to continue e Approval models CXB M After E1 E2 or E4 appear set the jumper SWA1 on main board to ADJ position and press S S to return the counting mode Then press 6 1 gt atthe same time followed by pressing i to access calibration see chap 7 3 CXB SH e 0913 5 Explanation of display Weight Reference weight iece Weight Loading status display Pieces 6 CXB SH e 0913 5 1 Symbol indicator Display weight Here the weight of your goods is displayed Overlay 4 indicates 20 Zeroing display PRE TARE Tare in memory Battery very low Display reference weight The reference weight of a sample is shown here This value is either entered by user of calculated by balance Overlay 4 indicates amp T Placed number of pieces insufficient for reference calculation aT Placed reference weight insufficient for reference calculation Display quantity Here all the parts placed on balance are immediately displayed by number Overlay 4 indicates M Data in summation memory ev Stability display Battery charge status display red Battery is almost discharged green Battery is completely discharged CXB SH e 0913 7 6 Explanation of keyboard AE PRE ET 5 6 VM 2 3 O0 Function e Number keys
15. to check keyboard function internal value of zero see chapter 3 General Information Press key Weight Piece Weight Pcs 0 0000 00000 000001 full capacity setting preset calibrated value refer to Approx 1 key in full scale 9d suggest key in full scale overload function max 9d a gt input the division 1 e g 1g 10g e g 0 2g 2g e g 0 59 5g b input the decimal point 0 e g 1g 1 e g 0 29 2 e g 0 01kg 3 e g 0 001kg c input the unit of the unit weight 0 1 2 8 9 full capacity are 10 of division 0 10 x1 15K1 CXB 30K2 1210 x10 2 10 x 100 8 102 x 0 01 9 10 x0 1 CXB 3K0 2 CXB 6K0 5 Example CXB 3K0 2 a 2 value of a x 10 Readout 2 10 0 29 gt c 9 d gt define the keyboard function of 8 kg lb PST CE keys use always 0 PST CE unit weight in kg 1 10 preset unit weight in kg OIML approval model 2 1 unit kg 2 unit Ib 3 10 preset 1 unit kg 2 unit Ib 4 PST CE Ib unit only 5 10 preset Ib unit only Ib kg 1 unit Ib 2 unit kg 7 10 preset Ib kg 1 unit Ib 2 unit kg CXB SH e 0913 15 e gt different versions
16. ypad 29 Keypad circuit 30 Load cell 31 9501 battery fixer 32 AE washer 2 0mm 33 FD Pad for Cockroach Filter Cap 34 9910 Upper noise Filter Cap t 0 8mm 35 9910 Lower Noise Filter Cap t 0 8mm 36 FD Anti cockroach plastic 3 Waterproof rubber 27 18 1mm 38 Main board 39 FD plastic pan 40 stainless steel pan 41 Adjust feet 42 Battery cover blue CXB SH e 0913 43 Upper housing 1 44 Lower housing 1 45 AE Sealing 1 46 Round head screw M4 8 6 47 Multi wire 150mm 1 48 Alloy hexagon screw M6 16 4 49 Power cable 1 50 Capacity sticker 1 51 Spring 1 52 Transformer 115 230V 10V 1 CXB SH e 0913 23
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