Table of Contents
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1
TECHNICAL DATA .............................................................................................. 33
2
UNPACKING AND STANDARD EQUIPMENT .................................................... 33
3
INSTALLATION.................................................................................................... 34
4
POWER MAINS CONNECTION........................................................................... 34
5
DECLARATION OF CONFORMITY..................................................................... 35
6
SELECTION OF THE MODE SETTING ............................................................... 37
6.1
Mode setting „Weighing"......................................................................................................................37
6.1.1
Weighing ..........................................................................................................................................37
6.1.2
Taring TARE ...................................................................................................................................38
6.1.3
Bar graph display when weighing...................................................................................................38
6.1.4
Net-total-weighings..........................................................................................................................38
6.2
Mode „parts counting"...........................................................................................................................39
6.3
Mode „percent" ......................................................................................................................................40
6.3.1
Input of the 100%-reference weight by weighing. ..........................................................................40
6.3.2
Input of the reference weight using the keyboard. .........................................................................42
6.4
Mode „weighing and conversion" .........................................................................................................42
7
WEIGHING WITH TOLERANCE RANGE (CHECK WEIGHER). ......................... 43
7.1
7.2
Input of the limiting values using the keyboard...................................................................................44
7.3
Deletion of the limiting values ...............................................................................................................44
8
ACCUMULATION OF DISPLAYED VALUES...................................................... 45
8.1
Accumulation of all individual weighings.............................................................................................45
8.2
Net-total weighing...................................................................................................................................46
9
ADJUSTING (CALIBRATION) ............................................................................. 47
9.1
Introduction ............................................................................................................................................47
9.2
Adjusting for verification.......................................................................................................................48
9.2.1
General.............................................................................................................................................48
9.2.2
Disable/enable the adjustment function..........................................................................................48
10
GENERAL PROGRAMMATIONS ..................................................................... 49
11
ACCUMULATOR OPERATION (OPTIONAL)................................................... 53
11.1
Technical data:........................................................................................................................................53
11.2
Assembling instructions .........................................................................................................................53
12
DATA OUTPUT ................................................................................................. 55
470-BA-defs-0017
KERN 470
Version 1.7 05/2000
Operating Instructions
Electronic Precision Balances
31
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Summary of Contents for KERN 470 Series
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Page 1: Table Of Contents
KERN 470 Version 1.7 05/2000 Operating Instructions Electronic Precision Balances TECHNICAL DATA ....................33 UNPACKING AND STANDARD EQUIPMENT ............ 33 INSTALLATION....................34 POWER MAINS CONNECTION................34 DECLARATION OF CONFORMITY..............35 SELECTION OF THE MODE SETTING ............... 37 Mode setting „Weighing“........................37 6.1.1... - Page 2 12.1 Description of the serial data output (similar to RS 232)..............55 12.2 Setting of the interface ...........................57 12.3 Additional technical data ........................57 IMPORTANT INFORMATION ................58 TROUBLE SHOOTING ..................59 14.1 Error messages............................59 470-BA-defs-0017...
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Page 3: Technical Data
1 Technical Data Model KERN 470-36 470-38 470-44 470-46 Readout (d) 0,01 Readout (d) verifiable 0,02 0,05 Readout (d) verified Verification value (e) Weighing range (max) 2000 5000 10000 15000 Minimum load (min) Reproducibility 0,01 0,02 0,05 Linearity ±0,02 ±0,04 ±0,1... -
Page 4: Installation
3 Installation Loosen the transport locking. For that remove the black rubber cap at the top of the casing and turn the lever below to the left side in „Weighing pos“. • See also the relevant labels. • Insert rubber cap again •... -
Page 5: Declaration Of Conformity
Applied harmonised norms, in particular EN 45501 This declaration is only valid with the certificate of conformity by a notified body. If a change is made to the above mentioned appliances without consulting KERN this declaration will become invalid. Date: 27 April 2000 Signature: Gottl. - Page 6 EC EMC Directive Version 89/336/ECC Applied harmonised norms, in particular EN 50081-1, EN 50082-1, EN 55022 If a change is made to the above mentioned appliances without consulting KERN this declaration will become invalid. Date: 27 April 2000 Signature: Gottl. KERN & Sohn GmbH Management Gottl.
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Page 7: Selection Of The Mode Setting
6 Selection of the mode setting There are four mode settings:: Mode settings Indication Page Weighing 1 SEt 1* Weighing and parts counting 1 SEt 2 Weighing and percent 1 SEt 3 Weighing and conversion 1 Set 4 • Manufacturer’s default. The mode setting is kept even when the balance will be turned off. -
Page 8: Taring Tare
The indication of a weight unit, i.e. „g“ can be changed to another unit, e.g. 2kg“ by repeatedly pressing F. Setting unit see point 10 „General programmations“: Weighing with tolerance range, see point 7. Weighing with accumulation, see point 8. 6.1.2 Taring TARE Place tare cup on the weighing plate and press TARE. -
Page 9: Mode „Parts Counting
6.2 Mode „parts counting“ Set mode „parts counting“ with F and TARE on „1 Set 2“,, see point 10 „General programmations Confirm with S. Press F and release it when „U SEt“ appears. Now flashing indication on..PC % Select the required reference number → 5 → 10 → 30 → 100 pieces by repeatedly pressing TARE. -
Page 10: Mode „Percent
Tare cups can also be used when counting parts. Before starting tare it with TARE. Leave the parts counting program by pressing F. Release it Func an then when 1 SEt 2 appears. Further see point 11 „General programmations“. The last memorised reference number is kept even when the „parts counting“ program will be left. - Page 11 Indication of the actual weight value on the weighing plate by pressing F twice. Return to the % display by pressing F. Tare cups/container can also be used for percent determinations. Before starting tare them with TARE. Percent determination with tolerance range see point 7 „Weighing with tolerance range“.
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Page 12: Input Of The Reference Weight Using The Keyboard
6.3.2 Input of the reference weight using the keyboard. Press F and release it when P. SEt Appears, Now flashing display of the actual memorised reference weight corresponding to 100 %. Example: Press TARE, starts to flash. Input By pressing three times TARE, move it with f by one place to the left, indication flashing Input... -
Page 13: Weighing With Tolerance Range (Check Weigher)
7 Weighing with tolerance range (Check weigher). This balance can be used as dispensing balance as well as grading balance. The respective lower and upper limiting values can be memorised. This is possible in all four modes: 6.1 WEIGHING 6.2 Weighing and parts counting 6.3 Weighing and percent 6.4 Weighing and conversion For 6.2 up to 6.4 firstly the starting extents have to be set, i.e. -
Page 14: Input Of The Limiting Values Using The Keyboard
Important! In case the balance should be unstable in the range of the limiting points, the vibration filter should be turned less sensitive, see point 10 „General programmations“. 7.2 Input of the limiting values using the keyboard Press S and release it when L. -
Page 15: Accumulation Of Displayed Values
8 Accumulation of displayed values The sum of all individual weighings during one period can be memorised in a separate store, for example the total daily sum of all weighings during this day. This is possible in all four modes: 6.1 WEIGHING 6.2 Weighing and parts counting 6.3 Weighing and percent... -
Page 16: Net-Total Weighing
8.2 Net-total weighing Useful when a mixture of several components will be weighed in a tare cup, and when finally the sum weight of all components will be needed for control (Net-total), i.e. without the weight of the tare cup. Place the tare cup (for example 852 g) on the weighing plate. -
Page 17: Adjusting (Calibration)
9 Adjusting (Calibration) 9.1 Introduction The accuracy of the balance can be checked and adjusted at any time with the enclosed adjusting weight. Take care of stable environmental conditions, see point 12 „Important informations“. A warming up time of approx. 30 minutes is necessary. Press and hold F and only release it when appears. -
Page 18: Adjusting For Verification
Before the verification procedure, the balance must be adjusted where it is to be used. The commutation of the readout, to 01 g for the verifiable balances 470-38 and 470-44. The balances have the following standard settings: KERN 470-38 470-44 Readout (d) -
Page 19: General Programmations
10 General programmations The manufacturer has set a certain default configuration. This marked with *. It can be changed as follows: Press F for approx. 4 seconds, release when Func Appears. Upon release appears. 1 SEt 1 The various functions will be called up by pressing F repeatedly. The individual setting within the various functions will be called up by pressing TARE repeatedly. - Page 20 Settings 21.Co. up to 25.G Are relevant for weighings with tolerance range only Sound signal Sounds immediately even when the stability detector ↓ ↓ ↓ ↓ Sounds only when the stability detector is indicated. Sound signal Sounds only outside the zero point range.
- Page 21 Zero adjust ↓ ↓ ↓ ↓ Automatic zero adjust. Automatic shutoff at A.S. accumulator operation ↓ ↓ ↓ ↓ Vibrations filtre Sensitive and quick. (integration time) Unsensitive but slow. Stability detector S.d. Unsensitive Sensitive Weight unit for group Not documented ↓...
- Page 22 Only when the serial interface is being used, see point 13 „Data output“ Output format Ø* Interface inactive at the interface ↓ ↓ ↓ ↓ 6 place data format (old format). 7 place data format Data format for verified balances („/“ will be fit before the last decimal Example: + 0123,45/5 Sp g Sp S CR LF...
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Page 23: Accumulator Operation (Optional)
11 Accumulator operation (optional) 11.1 Technical data: LOADING TIME: Approx. 8 hours when the balance is turned off. Operating time: Approx. 5 hours at continuous operation. Automatic shutoff: An automatic shutoff can be programmed (see point 10 „General programmations“). When it has been programmed the indication will be shut off 3 minutes after the last utilisation of the balance. - Page 24 Release the fastening screw in the lower part of the casing and insert the accu-set as per the drawing. Slide the U-shaped sector of the accu-holder below the lock. Re-insert and tighten the fastening screw. Do the same with the fastening screw for the lock. Slide the plug of the connection cable on the plug CN2 of the main print.
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Page 25: Data Output
12 Data output The balance is supplied as standard with an interface similar to RS 232 Important! A standard bidirectional RS 232 C interface with comfortable remount control is available against extra charge. 12.1 Description of the serial data output (similar to RS 232) The data output is placed at the rear side of the balance. - Page 26 During each data output a chain of 14 or 15 signs is being transferred. The following formula is valid: + or - Premise (P) 6 or 7 digit readout of the indication and decimal point (= 6 or 7 signs) (D) two symbols for the unit two status symbols one carriage return...
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Page 27: Setting Of The Interface
Octal Decimal Hexadecimal Sign Line feed Carriage return space pace 12.2 Setting of the interface The output has to be adapted for special requirements (see point 10 „General programmations). The output format, the output conditions, the Baud rate and the parity can be set. 12.3 Additional technical data Transfer format: serial data transfer... -
Page 28: Important Information
13 Important information This precision balance should be used by skilled staff. This electronic balance is a precision instrument. Avoid disturbing environmental conditions such as air current, vibrations, strong electrical and magnetically fields and rapid change of ambient temperature. When necessary readjust the balance upon temperature adaptation. Avoid high humidity, vapours and dust because the balance is not hermetically closed. -
Page 29: Trouble Shooting
14 TROUBLE SHOOTING Trouble Possible causes No indication Balance is not turned on Mains connection does not function (cable not connected, cable defective). Mains supply break down. Weight indication is Air movements. changing permanently Vibrations of the table or the floor The pan is in contact with an alien element.