KERN AEJ_N, AES_N Operating Instructions Manual

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KERN & Sohn GmbH

Ziegelei 1

D-72336 Balingen

E-Mail: info@kern-sohn.com

Tel: +49-[0]7433- 9933-0

Fax: +49-[0]7433-9933-149

Internet: www.kern-sohn.com

Operating instruct ions Analytical balance

KERN AEJ_N/AES_N

Version 2.1

03/2013

AEJ_N/AES_N-BA-e-1321

2 AEJ_N/AES_N-BA-e-1321

KERN AEJ_N/AES_N

Version 2.1 03/2013

Operating instructions

Electronic analytical balance

Contents

1 TECHNICAL DATA ............................................................................................. 5

1.1 Dimensions ............................................................................................................................... 7

2 APPLIANCE OVERVIEW ................................................................................... 8

2.1 Display and Keyboard Summary ............................................................................................ 9

2.1.1 Numeric entry ....................................................................................................................... 10

3 BASIC INSTRUCTIONS ................................................................................... 11

3.1 Proper use ............................................................................................................................... 11

3.2 Improper Use .......................................................................................................................... 11

3.3 Warranty .................................................................................................................................. 11

3.4 Monitoring of Test Resources ............................................................................................... 11

4 BASIC SAFETY PRECAUTIONS ..................................................................... 12

4.1 Pay attention to the instructions in the Operation Manual ................................................ 12

4.2 Personnel training .................................................................................................................. 12

5 TR ANSPORT AND STORAGE ......................................................................... 12

5.1 Testing upon acceptance ...................................................................................................... 12

5.2 Packaging / return transport ................................................................................................. 12

6 UNPACKING, SETUP AND COMMISSIONING ............................................... 15

6.1 Installation Site, Location of Us e .......................................................................................... 15

6.2 Unpacking and checking ....................................................................................................... 15

6.2.1 Scope of delivery / serial accessories .................................................................................. 15

6.2.2 Placing .................................................................................................................................. 16

6.3 Mains connection ................................................................................................................... 16

6.3.1 Turning On the Power .......................................................................................................... 17

6.4 Connection of peripheral devices ......................................................................................... 17

6.5 Initial Commissioning ............................................................................................................ 17

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7 ADJUSTMENT .................................................................................................. 18

7.1 Automatic adjustment using internal weight (AEJ only) .................................................... 19

7.2 Menu settings ......................................................................................................................... 21

7.2.1 P1.1 iCAL ............................................................................................................................. 21

7.2.2 P1.2 ECAL - External adjustment (AES models) ................................................................. 22

7.2.3 P1.3 tCAL – adjustment test ................................................................................................ 23

7.2.4 P1.4 ACAL – Start criteria of the automatic internal adjustment (AEJ only) ........................ 25

7.2.5 P1.5 CALt– time controlled automatic adjustment (AEJ only) ............................................. 26

7.2.6 P1.5 CALr– Enable/disable issue of adjustment protocol .................................................... 27

7.3 Verification .............................................................................................................................. 28

8 MENU ................................................................................................................ 30

8.1 Navigation in the menu .......................................................................................................... 32

8.2 Exit menu / back to weighing mode. .................................................................................... 33

9 WEIGHING FUNCTIONS P6 FUNC ................................................................. 34

9.1 Turn on/off balance ................................................................................................................ 34

9.2 Weighing ................................................................................................................................. 34

9.3 Standard weighing unit .......................................................................................................... 35

9.4 Weighing units switch-over ................................................................................................... 36

9.5 Taring ....................................................................................................................................... 36

9.6 Underfloor weighing ............................................................................................................... 37

9.7 Selecting the operating mode ............................................................................................... 38

9.7.1 Selecting accessible operating modes ................................................................................. 40

10 BALANCE SETTINGS “P3 READ” ............................................................. 41

10.1 Filter - adaptation to ambient conditions and weighing options ...................................... 41

10.2 Rest position control display – Adaptation of weighing speed ........................................ 42

10.3 Auto Zero ................................................................................................................................. 43

10.4 Hide last decimal place .......................................................................................................... 44

10.5 Di spensing mode “RAPID” .................................................................................................... 45

11 FURTHER USEFUL FUNCTIONS “P7 OTHER“ .......................................... 46

11.1 Di splay background illumination .......................................................................................... 46

11.2 Acoustic signal for key operation ......................................................................................... 47

11.3 P rint weighing settings .......................................................................................................... 48

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12 GLP/ISO LOG “P2 GLP“ .............................................................................. 49

13 OPERATION MODES ................................................................................... 53

13.1 P arts counting ........................................................................................................................ 54

13.2 Weig h ing with tolerance range ............................................................................................. 58

13.3 P ercent determination............................................................................................................ 61

13.3.1 Determining the reference weight by weighing (function F4 PrcA) ................................. 61

13.3.2 Numeric entry of reference weight (function F4 Prcb) ..................................................... 62

13.4 Dosing...................................................................................................................................... 64

13.5 Determining the density of solid matter and fluids ............................................................ 65

13.6 P ipette calibration .................................................................................................................. 66

13.6.1 Entering parameters ........................................................................................................ 66

13.6.2 Carry out series of measurements for test volume V0 ..................................................... 67

13.6.3 Carry out series of measurements for test volume V

1/2

................................................... 68

13.6.4 Carry out series of measurements for test volume V1 ..................................................... 69

14 DATA OUTPUT RS 232 “P4 PRINT“ ............................................................ 71

14.1 Technical data ......................................................................................................................... 71

14.2 Interface cable ........................................................................................................................ 72

14.3 Menu settin g s “P4 PRINT“ .................................................................................................... 73

14.4 P rintout examples (KERN YKB-01N) .................................................................................... 78

14.5 Output lo g ............................................................................................................................... 79

14.5.1 Issue after pressing the PRINT ´button ........................................................................... 79

14.5.2 PC controlled output ........................................................................................................ 80

14.5.3 Output of date/time .......................................................................................................... 80

14.6 Remote control instructions ................................................................................................. 81

15 SERVICE, MAINTENANCE, DISPOSAL ...................................................... 82

15.1 Cleaning .................................................................................................................................. 82

15.2 Service, maintenance ............................................................................................................. 82

15.3 Disposal ................................................................................................................................... 82

16 INSTANT HELP ............................................................................................. 83

16.1 Error messages ...................................................................................................................... 84

17 DECLARATION OF CONFORMITY .............................................................. 85

AEJ_N/AES_N-BA-e-1321 5

1 Technical data

KERN AEJ 100-4NM AEJ 200-4NM AEJ 200-5NM

Readability (d) 0.1 mg 0.1 mg 0.01 mg / 0.1 mg Weighing range (max) 160 g 220 g 60 g – 220 g Minimum load (Min) 10 mg 10 mg 1 mg Verification value (e) 1 mg 1 mg 1 mg Verification class I I I Reproducibility 0.2 mg 0.2 mg 0.04 mg / 0.2 mg Linearity ± 0.3 mg ± 0.3 mg ± 0.1 mg / ± 0.3 mg Stabilization time 4 sec. Adjustment weight internal Warm-up time 8 h Weighing Units mg, g, ct Smallest part weight for

piece counting

10 mg 10 mg 1 mg

Reference quantities at piece counting

10, 20, 50, freely selectable

Weighing plate, stainless steel

ø 85mm ø 70mm

Net weight (kg) 5.4 Permissible

ambient condition

+18° C to +30° C

Humidity of air 30 ~ 80 % relative (not condensing) Input voltage 110 - 230 V - 240 V AC‚50 Hz Power pack

secondary voltage

13.8 V

Interface RS 232C Underfloor weighing

device

Hooks

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KERN AES 100-4N AES 200-4N

Readability (d) 0.1 mg 0.1 mg Weighing range (max) 160 g 220 g Reproducibility 0.2 mg 0.2 mg Linearity ± 0.3 mg ± 0.3 mg Recommended adjusting

weight not supplied (class)

150 g (E2) 200 g (E2)

Stabilization time 4 sec. Warm-up time 8 h Weighing Units g, mg, ct, oz, ozt, GN, mom, dwt, teal Smallest part weight for

piece counting

10 mg

Reference quantities at piece counting

10, 20, 50, freely selectable

Weighing plate, stainless steel

ø 85mm

Net weight (kg) 5.4 Permissible

ambient condition

+18° C to +30° C

Humidity of air 30 ~ 80 % relative (not condensing) Input voltage 110 - 230 V - 240 V AC‚50 Hz Power pack

secondary voltage

13.8 V

Interface RS 232C Underfloor weighing

device

Hooks

AEJ_N/AES_N-BA-e-1321 7

1.1 Dimensions

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2 Appliance overview

1. Windshield

2. Weighing pan

3. Display

4. Keyboard

5. Levelling screw

6. Bubble level

7. Terminal power supply unit

8. RS232 interface

9. Not documented

AEJ_N/AES_N-BA-e-1321 9

2.1 Display and Keyboard Summ ary

1. Stability display

2. Zero indicator

3. The non-calibrated value is given in brackets in calibrated scales.

4. Weighing unit “g“

Key

Function

• Turn on/off

• Call up menu

• Activate operating mode

• Scroll backwards in menu

• Switch-over weighing unit

• Scroll forward in menu

• Calculate weighing data via interface

• Confirm / save

• Taring

• Zeroing

•

Exit menu / Return to weighing mode

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2.1.1 Numeric entry

Key Description Function

Navigation button 

Increase flashing dig it

Navigation button 

Decrease flashing digi t

Navigation button 

Digit selection to the right

Navigation button 

Digit selection as per

Navigation button

Confirm entry

ESC Cancel input

AEJ_N/AES_N-BA-e-1321 11

3 Basic instructions

3.1 Proper use

The balance you purchased is intended to determine the weighing value of material to be weighed. It is intended to be used as a “non-automatic balcance”, i.e. the material to be weighed is manually and carefully placed in the centre of the weighing pan. As soon as a stable weighing value is reached the weighing value can be read.

3.2 Improper Use

Do not use balance for dynamic add-on weighing procedures, if small amounts of goods to be weighed are removed or added. The “stability compensation“ installed in the balance may result in displaying an incorrect measuring value! (Example: Slowly draining fluids from a container on the balance.) Do not leave permanent load on the weighing pan. This may damage the measuring system. Impacts and overloading exceeding the stated maximum load (m ax) of the balance, minus a possibly existing tare load, must be strictly avoided. Balance may be damage by this. Never operate balance in explosive environment. The serial version is not explosion protected. The structure of the balance may not be modified. This may lead to incorrect weighing results, safety-related faul ts and dest ruc ti on o f the bala nce. The balance may only be used according to the described conditions. Other areas of use must be released by KERN in writing.

3.3 Warranty

Warranty claims shall be voided in case

• Our conditions in the operation manual are ignored

• The appliance is used outside the described uses

• The appliance is modified or opened

• Mechanical damage or damage by media, liquids, natural wear and tear

• The appliance is improperly set up or incorrectly electrically connected

• The measuring system is overloaded

3.4 Monitoring of Test Resources

In the framework of quality assurance the measuring-related properties of the balance and, if applicable, the testing weight, must be checked regularly. The responsible user must define a suitable interval as well as type and scope of this test. Information is available on KERN’s home page (www.kern-sohn.com with regard to the monitoring of balance test substances and the test weights required for this. In KERN's accredited DKD calibration laboratory test weights and balances may be calibrated (return to the national standard) fast and at moderate cost.

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4 Basic Safety Precautions

4.1 Pay attention to the instruc t ions in the Operation Manual

 Carefully read this operation manual before setup and

commissioning, even if you are already familiar with KERN balances.

 All language versions contain a non-binding translation.

The original German is binding.

4.2 Personnel training

The appliance may only be operated and maintained by trained personnel.

5 Transport and storage

5.1 Testing upon acceptance

When receiving the appliance, please check packaging immediately, and the appliance itself when unpacking for possible visible damage.

5.2 Packaging / return transport

 Keep all parts of the original packaging for a possibly required

return.

 Only use original packaging for returning.

AEJ_N/AES_N-BA-e-1321 13

 Prior to dispatch disconnect all cables and remove loose/mobile

parts.

 Reattach possibly supplied transport securing devices.

 Secure all parts such as the glass wind screen, the weighing

platform, power unit etc. against shifting and damage.

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AEJ_N/AES_N-BA-e-1321 15

6 Unpacking, Setup and Commissioning

6.1 Installation Site, Locati on of Us e

The balances are designed in a way that reliable weighing results are achieved in common conditions of use. You will work accurately and fast, if you select the right location for your balance.

Therefore, observe the following for the installation site:

• Place the balance on a firm, level surface;

• Avoid extreme heat as well as temperature fluctuation caused by installing

next to a radiator or in the direct sunlight;

• Protect the balance against direct draughts due to open windows and doors;

• Avoid jarring during weighing;

• Protect the balance against high humidity, vapours and dust;

• Do not expose the device to extreme dampness for longer periods of time.

Non-permitted condensation (co nd ens a ti on o f air humidi ty on the appliance) may occur if a cold appliance is taken to a considerably warmer environment. In this case, acclimatize the disconnected appliance for ca. 2 hours at room temperature.

• Avoid static charge of goods to be weighed or weighing container.

If electro-magnetic fields or static charge occur, or if the power supply is unstable major deviations on the display (incorrect weighing results) are possible. In that case, the location must be chang ed.

6.2 Unpacking and checking

Open package, take out the appliance and accessories. Verify that there has been no damage and that all packing items are present.

6.2.1 Scope of delivery / serial accessories

• Balance, see chap. 2

• Mains adapter

• Operating instructions

• Protective cover

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6.2.2 Placing

 Installation of weighing plate

Models with weighing pan ø 85mm Models with weighing pan ø 70mm

 Assemble all parts in the right order.  Close gates.  For instructions on how to connect the weighing scale to the

power supply see chap. 6.3.

 Level balance with foot screws until the air bubble of the water balance is in the

prescribed circle

 Check levelling regularly

6.3 Mains connection

Power is supplied via the external mains adapter. The stated voltage value must be the same as the local voltage. Only use original KERN mains adapters. Using other makes requires consent by KERN.

AEJ_N/AES_N-BA-e-1321 17

6.3.1 Turning On the Power



Supply balance with power via the mains adapter. The display unit lights up and shown the software version. The weighing scale carries out a selftest and automatically moves into weighing mode. In the AEJ models an automatic adjustment takes place.

6.4 Connection of periphera l devi c e s

Before connecting or disconnecting of additional devices (printer, PC) to the data interface, always disconnect the balance from the power supply.

With your balance, only use accessories and peripheral devices by KERN, as they are ideally tuned to your balance.

6.5 Initial Commissioning

In order to obtain exact results with the electronic balances, your balance must have reached the operating temperature (see warming up time chap. 1). During this warming up time the balance must be connected to the power supply (mains, accumulator or battery). To adapt the balance to ambient conditions, open wind screen doors. The accuracy of the balance depends on the local acceleration of gravity. Strictly observe hints in chapter Adjustment.

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7 Adjustment

As the acceleration value due to gravity is not the same at every location on earth, each balance must be coordina ted - in compliance with the underlying physical weighing principle - to the existing acceleration due to gravity at its place of location (only if the balance has not already been adjusted to the location in the factory). This adjustment process must be carried out for the first commissioning, after each change of location as well as in case of fluctuating environment temperature. To receive accurate measur i ng values it is also recommended to adjust the balance periodically in weighing operation.

Possible adjustments include:

• Automatic adjustment using internal weights (AEJ models only) For time and temperature controlled see chap. 7.1.

• Manual adjustment (AEJ models only) Activated by pressing the F-key three times, see chap. 7.2.1

• Adjustment with external weight, see chap. 7.2.2

• Adjustment can only be carried out when the weighing pan is free of objects.

Any loads remaining on the weighing pan will be indicated by error message Er1Hi.

• You can cancel the adjustment by pressing the TARE-key.

AEJ_N/AES_N-BA-e-1321 19

7.1 Automatic adjustment usi ng int e rnal weight (AEJ only)

With the internal adjustment weight, the weighing accuracy can be checked and readjusted at any time.

The automatic adjustment function is always enabled. You can start adjustment at any time by pressing the F-key 3 times.

Temperature / time controlled adjustment is taking place:

Automatic adjustment will be indicated 5 minutes in advance by “°C” (change of temperature ∆t 0.8°C) or the “►”symbol on the display (after a period of 3 hours has passed or a defined time interval).

The user must complete his/her weighing process within this time. After 5 minutes [ CAL 30 ] appears on the display.

This starts a “count down” of 30 seconds [ CAL 30 ] → [ CAL 0 ]. You may cancel adjustment during these 30 seconds by pressing the TARE-key. This makes the balance return to weighing mode in order to e. g. complete an unfinished measurement.

After a further 5 minutes the automatic adjustment will restart and [ CAL 30 ] appears. You may interrupt the adjustment process several times. However, keep in mind that an interruption of the adjustment may lead to incorrect weighing results.

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Automatic adjustment is carried out:

• When balance was disconnected from the mains.

• When the temperature is changing

The moment a change in temperature of 0.8°C is detected by the temperature sensor, the weighing scale will carry out a fully automatic adjustment. The °C symbol indicates the pending adjustment.

• at the end of a time interval After the time interval (selectable from 1-12 hours) set in the menu (P1.5 CALt)

has passed, the weighing scale will indicate the pending adjustment by displaying (indicator ►):

In weighing scales with type approval certificate

• menu item P1.5 CALt is locked.

• Adjustment takes place every 3 hours

AEJ_N/AES_N-BA-e-1321 21

7.2 Menu settings

Menu item “P1 CAL“ [adjustment]

AEJ AES

P1.1 iCAL Internal adjustment AEJ only P1.2 ECAL P1.1 ECAL External adjustment * P1.3 tCAL P1.2 tCAL Adjustment test P1.4 ACAL Automatic adjustment AEJ * only P1.5 CALt

Time controlled automatic adjustment AEJ *

only

P1.6 CALr P1.3 CALr Printout adjustment log

* = Locked in weighing scales with type approval certificate [Er 9 lock].

7.2.1 P1.1 iCAL

 For automatic internal adjustment see chap. 7.1  Starting interna l adjustment manually

 Press F-key three times

• Ensure that there are no objects on the weighing pan.

• You can cancel adjusting by pressing the TARE-key.

• After successful adjustment the balance automatically returns

to weighing mode.

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7.2.2 P1.2 ECAL - External adjustment (AES models)

Carry out adjustment with the help of the recommended adjustment weight (see chapter 1 “Technical Specifications”). Observe stable environmental conditions. A warming up time (see chapter 1) is required for stabiliz at ion.

• Return to weighing mode, see chap. 8.2.

• This function is locked in weighing scales with type approval certificate.

Ensure that there are no objects on the

weighing pan. Press PRINT-key, CAL will be shown. Wait until the weighed value for the required adjustment weight appears. Place the required calibration weight carefully in the centre of the weighing plate and press the PRINT key. The display is showing CAL and adjustment is starting. Adjustment will be complete when the display is showing UNLOAD; remove the adjustment weight. After successful adjustment the balance automatically returns to weighing mode.

AEJ_N/AES_N-BA-e-1321 23

7.2.3 P1.3 tCAL – adjustment test

 AEJ models

This function is applied to compare the internal adjustment weight with the saved value. The test is carried out automatically. The result is shown on the display and, if an optional printer is connected, a printout will be issued via the RS 232 interface.

+ Return to weighing mode, see chap. 8.2.

24 AEJ_N/AES_N-BA-e-1321

 AES models

Here, deviation from the last adjustm ent is determined. This is only a check, i.e. no values are changed.

+ Return to weighing mode, see chap. 8.2.

AEJ_N/AES_N-BA-e-1321 25

7.2.4 P 1 . 4 ACAL – Start criteria of the automatic internal adjustment

(AEJ only)

This function is applied to defin e the criteria required for s tarting up automatic adjustment.

Settings:

nonE Automatic adjus tm ent disabled tEmp Start automatic Adjustment after change in temperature timE The start of ti me controlled automatic adjustment depends on t he set ti ng

“P1.5 CALt”

both Start automatic Adjustment is temperature and time dependent

+ Return to weighing mode, see chap. 8.2.

This function is locked in weighing scales with type approval certificate.

26 AEJ_N/AES_N-BA-e-1321

7.2.5 P1.5 CALt– time controlled automatic adjustment (AEJ only)

This function is applied to define the time interval (selectable from 1-12 hours) for automatic adjustment.

+ Return to weighing mode, see chap. 8.2.

This function is locked in weighing scales with type approval certificate.

AEJ_N/AES_N-BA-e-1321 27

7.2.6 P1.5 CALr– Enable/disable issue of adjustment protocol

This function enables auto ma ti c log issue after each adjustment. These logs may be issued by using an optional printer. To define the content of the protocol go to menu item “P2 GLP”, s. chap. 12

no Adjustment protocol disabled YES Adjust me nt pro toc ol enabled

+ Return to weighing mode, see chap. 8.2.

28 AEJ_N/AES_N-BA-e-1321

7.3 Verification

General introduction:

According to EU directive 2009/23EG balances must be officially verified if they are used as follows (legally controlled area):

a) For commercial transactions if the price of goods is determined by weighing. b) For the production of medicines in pharmacies as well as for analyses in the

medical and pharmaceutical laboratory. c) For official purposes d) For manufacturing final packages

In cases of doubt, please contact your local trade in standard. Verification notes:

An EU type approval exists for balances described in their technical data as verifiable. If a balance is used where obligation to verify exists as described above, it must be verified and re-verified at regular intervals. Re-verification of a balance is carried out according to the respective national regulations. The validity for verification of balances in Germany is e.g. 2 years. The legal regulation of the country where the balance is used must be observed!

Verification of the balance is invalid without the seal.

The seal marks attached on balances with type approval point out that the balance may only be opened and serviced by trained and authorised specialist staff. If the seal mark is destroyed, verification looses its validity. Please observe all national laws and legal regulations. In Germany a reverification will be necessary.

AEJ_N/AES_N-BA-e-1321 29

Position of the “official seals“:

Balances with obligation to verify must be taken out of operation if:

•

The weighing res ult of the balance is outside the error limit. Therefore,

in regular intervals load balance with known test weight (ca. 1/3 of the max. load) and compare with displayed value.

•

The reverification deadline has been exceeded.

Position of the official seals

30 AEJ_N/AES_N-BA-e-1321

8 Menu

The menu is subdivided into seven menu blocks (P1 – P7).

P1 CAL [adjustment]

* = locked in devices with type approval certificate

P2 GLP [good lab practice]

P3 rEAd [main functions]

P3.1 AuE | Stand/Slouu/FASt [filter settings] P3.2 ConF | FASt_rEL/Fast/rEL [rest control display] P3.3 Auto | On/OFF [Auto zero] P3.4 Ldi9 | ALuuAYS/never/uu_StAb [delete last decimal place]

P4 Print [parameter for serial interface RS 232]

P4.1 bAud | 2400/4800/9600/19200 [Baud rate] P4.2 CntA | YES/no [continuous output standard weighing unit] P4.3 Cntb | YES/no [continuous output currently set weighing unit] P4.4 rEPL | YES/no [manual (press key) or automatic output] P4.5 PStb | YES/no [output stable/instable weighing values] P4.6 Lo | 000.0000 [input minimal weight for automatic output]

AEJ_N/AES_N-BA-e-1321 31

P5 unit [weighing uni t]

P6 Func [operating modes]

P6.1 FFun | ALL/PcS/HiLo/PrcA/Prcb/d_Co/d_Li Pipette/FiLL [selection enabled operatin g modes ] P6.2 PcS | YES/no [piece counting] P6.3 HiLo | YES/no [weighing with tolerance control] P6.4 PrcA | YES/no [percentage weighing, reference weight determination

"weighing"] P6.5 Prcb | YES/no [percentage weighing, reference weight determination

“numeric“] P6.6 d_Co | YES/no [determination density “solids”] P6.7 d_Li | YES/no [determination density “liquids”] P6.8 Pi_t | YES/no [Pipette calibration] P6.9 Fill | YES/no [Dispensing]

P7 othEr [addi ti onal useful functions]

P7.1 bL | On/Aut/OFF Display background illumination P7.2 bEEP | On/OFF [touch tone] P7.3 PrnS | [printout “weighing parameters”]

32 AEJ_N/AES_N-BA-e-1321

8.1 Navigation in the menu

Call up menu In weighing mode press the F-key and the first menu block

“P1 CAL” will appear.

Select menu block Use the cursor key  to select the individual menu blocks

one by one. Use the cursor key  to scroll down. Use the cursor key  to scroll up.

Select menu item

Confirm the selected menu block by pressing the F-key. The first menu item of the selected menu block will be shown.

Use the cursor key  to select individual menu items one by one.

Use the cursor key  to scroll down.

Use the cursor key  to scroll up.

Select setting Acknowledge selected men u ite m using F button, the current

setting is displayed

Change settings Use the cursor keys to change to the available settings.

Use the cursor key  to scroll down. Use the cursor key  to scroll up.

Confirm setting / back to menu

Either confirm by pressing the PRINT-key or reject by pressing the TARE-key.

Save / back to weighing mode

see chap. 8.2

AEJ_N/AES_N-BA-e-1321 33

8.2 Exit menu / back to weighing mode.



Press the TARE-key repeatedly until “SAVE?” is displayed.

 Any changes carried out are stored by pressing the PRINT key.

To cancel changes, press the TARE key.

 Then the balance returns automatically into the weighing mode.

34 AEJ_N/AES_N-BA-e-1321

9 Weighing functions P6 func

9.1 Turn on/off balance



The weighing scale will carry out a self-test after having been connected to the power supply and will then automatically go into weighing mode.

 To switch off pres the ON/OFF-key; “oFF“, will be displayed. The balance is

now in stand-by mode No warming-up up time is required and it will be ready for operation immediately after switching on (Press ON/OFF-key).

 To switch-off the balance completely, separate balance from power s uppl y .

9.2 Weighing

A warm-up time is required for stabilisation (see chap. 1).

 Check zero display [ ] and set to zero with the help of the TARE key, as

required.

 Place the goods to be weighed and close the wind screen doors  Wait until the stability display appears ( ).  Read weighing result.

When an optional printer is connected, the weighing value can be edited. Printout example (KERN YKB-01N):

Date : 23/07/12 Time : 09:16 User Id : KERN Project Id : ABC Balance Id : 350938

19.999[3] g

The non-calibrated value is given in

brackets in calibrated scales.

AEJ_N/AES_N-BA-e-1321 35

9.3 Standard weighing unit

The weighing unit selected here remains even after disconnection from the mains.

 Press the UNIT-key repeatedly until the desired weighing unit is shown.

[g] → [mg] → [ct] → [oz] → [ozt] → [dwt] → [t] → [mom]→ [G] → [g]

In balances without type-approval certificate selection is restricted to options [g] → [mg] → [ct]

36 AEJ_N/AES_N-BA-e-1321

 Confirm your selection by pressing the PRINT-key; weighing scale will return to

menu.

 For returning to weighing mode with set weighing unit, see chap. 8.2.

9.4 Weighing units switch-over

A weighing unit may be changed by pressing the UNIT-key several times:

[g] → [mg] → [ct] → [oz] → [ozt] → [dwt] → [t] → [mom]→ [G] → [g]

Note: In calibrated model selection is restricted to options [g] → [mg] → [ct].

9.5 Taring

The dead weig ht of a ny wei ghing con tainer may be tar ed aw ay by pre ssing a button, so that the following weig hing proc edures s how the net w eight o f the g oods to be w eighed.

 Put vessel of goods to be weighed on weighing plate and close the wind

screen doors.

 Wait until the stability display appears ( ), then press TARE. The weight of

the container is now internally saved.

 Weigh the goods to be weighed and close the wind screen doors.  Wait until the stability display appears ( ).  Read net weight.

•

When the balance is unloaded the saved taring value is displayed with

negative sign.

•

To delete the stored tare value, remove load from weighing pan and

press TARE.

• The taring process can be repeated any number of times.

The limit is

reached when the whole weighing range is exhausted.

AEJ_N/AES_N-BA-e-1321 37

9.6 Underfloor weighing

Objects unsuitable for pl aci ng on the weighing scale due to size or shape may be weighed with the help of the flush-m ount ed platform. Proceed as follows:

• Switch off the balance.

• Open closing cover at the balance bottom.

• Suspend hook for underflo or w eighing carefully and completely.

• Place weighing balance over an opening.

• Attach load to hook and carry out weighing procedure.

Fig. 1: Setting up a weighing scale for underfloor weighing

CAUTION

•

Always ensure that all suspended objects are stable enough to hold

the desired goods to be weighed safely (danger of breaking).

•

Never suspend loads that exceed the stated maximum load (max)

(danger of breaking)

• Always ensure that there are no persons, animals or objects that might be damaged underneath the load.

After completing the underfloor weighing the opening on the bottom of

the balance must always be closed (dust protection).

38 AEJ_N/AES_N-BA-e-1321

9.7 Selecting the operating mode

To enable operating modes that are available to the user without having to go to the menu every time, go to the “P6 Func” menu. All activated operating modes can be

called directly by pressing the key.

 If you wish to have several operating modes callable via the key, select

ALL for a setting.

For selection of accessible operating modes, see chap. 9.7.1.

 If you wish to access only one operating mode via the key, select it directly

via the UNIT key. (For instance PcS for piece counting)

AEJ_N/AES_N-BA-e-1321 39

 Confirm selection by pressing the PRINT-key; weighing scale will return to

menu P6.1 FFun.

Either

 For how to return to weighing mode after selecting an operating mode, see

chap. 8.2

 For how to enable accessible operating modes after selecting ALL, see chapter

9.7.1 below.

Piece counting see chapter 13.1

For weighing with tolerance range, see chap. 13.2

For percentage determination, see chap. 13.3.1

For percentage determination, see

chap. 13.3.2

For density determination solid matter, see chap. 13.5

For density determination fluids, see chap. 13.5

For pipette calibration, see chap. 13.6

For dispensing, see chap. 13.4

40 AEJ_N/AES_N-BA-e-1321

9.7.1 Selecting accessible operating modes

Go there to select operating modes that subsequently will be selectable directly via the key.

 Confirm your selection by pressing the PRINT-key; balance will return to menu.  Return to weighing mode, see chap. 8.2.

YES: turned on

no: turned off

Please repeat this sequence of operations for any other operating mode availabl e.

AEJ_N/AES_N-BA-e-1321 41

10 Balance settings “P3 rEAd”

This menu block can be used to adapt the behaviour of the weighing scale to your requirements (such as ambient conditions, special weighing procedures).

10.1 Filter - adaptation to ambient conditions and weighing options

 Confirm your selection by pressing the PRINT-key; weighing scale will return to

menu.

 Return to weighing mode, see chap. 8.2.

Standard – normal ambient conditions

Slow - The balance reacts slowly and in a robust manner, busy set-up location

Fast - The balance reacts quickly and in a sensitive manner, quiet set-up location.

42 AEJ_N/AES_N-BA-e-1321

10.2 Rest position control displ ay – Adaptation of weighing speed

 Confirm your selection by pressing the PRINT-key; weighing scale will return to

menu.

 Return to weighing mode, see chap. 8.2.

Standstill control fast + exact –

quiet set-up location

Rest position control fast Very quiet setup location

Rest position control accurate Unbalanced installation site

AEJ_N/AES_N-BA-e-1321 43

10.3 Auto Zero

This function is used to tare small variations in weight automatically. In the event that small quantities are removed or added to the material to be weighed, incorrect weighing results can be displayed due to the “stability compensation“. (e.g. slow flow of liquids from a container placed on the balance, evaporating processes). When apportioning involves small variations of weight, it is advisable to switch off this function.

 Confirm your selection by pressing the PRINT-key; weighing scale will return to

menu.

 Return to weighing mode, see chap. 8.2.

AutoZero turned on

AutoZero turned off

44 AEJ_N/AES_N-BA-e-1321

10.4 Hide last decimal place

Readability may be reduced by 1 digit on the weighing balances, as required. The last decimal place will be rounded and removed from the display.

 Confirm your selection by pressing the PRINT-key; weighing scale will return to

menu.

 Return to weighing mode, see chap. 8.2.

shows last decimal place

hiding last decimal place

last decimal place will only be shown for stable weighing values

AEJ_N/AES_N-BA-e-1321 45

10.5 Dispensing mode “RAPID”

This setting is used to automatically adjust all parameters required for dispensing. In this way you do not have to call and change each menu item individually.

Menu settings:

RAPID = NO

Standard settings for all weighing options and normal loads

The weighing scale works according to the parameters set (P3.1 AUE,

see chap. 10.1 / P3.2 CONF, see chap.10.2)

RAPID = YES

Parameters for dispensing are set automatically. The weighing scale automatically works at increased weighing speed.

 Confirm your selection by pressing the PRINT-key; weighing scale will return to

menu.

 Return to weighing mode, see chap. 8.2.

46 AEJ_N/AES_N-BA-e-1321

11 Further useful functions “P7 othEr“

Here, you can set the parameters that influence the operation of the balance, such as background lighting and key sounds.

11.1 Display background illumination

 Confirm your selection by pressing the PRINT-key; weighing scale will return to

menu.

 Return to weighing mode, see chap. 8.2.

On = background illumination

switched on. Aut = Backlighting automatically

switched off 10 seconds after achieving stable weighing valu e.

OFF = background illumination switched off.

AEJ_N/AES_N-BA-e-1321 47

11.2 Acoustic signal for key operation

 Confirm your selection by pressing the PRINT-key; weighing scale will return to

menu.

 Return to weighing mode, see chap. 8.2.

On = acoustic signal turned on

OFF = acoustic signal turned off

48 AEJ_N/AES_N-BA-e-1321

11.3 Print weighing settings

 Confirm your selection by pressing the PRINT-key; weighing scale will return to

menu.

 Return to weighing mode, see chap. 8.2.

All weighing scale settings are issued via the RS232 interface.

AEJ_N/AES_N-BA-e-1321 49

12 GLP/ISO log “P2 GLP“

Quality assurance systems require logs of weighing results as well as of correct adjustment of the balance stating date and time and balance identification. The easiest way is to have a printer connected. The content of the data output is determined in menu “P2 GLP“. All parameters set to “YES“ will be issued. Examples:

P2 GLP

Definition of a standard log:

• P2.1 USr – Enter user name

 Press the UNIT-key and the next menu item “P2.2 PrJ“, will appear.

50 AEJ_N/AES_N-BA-e-1321

Input via cursor keys

Overview data input / data output:

Examples:

Data input Data output

1. Upper case characters OP1_WILK

2. Lower case characters

op1_wilk

• Selection of the number

to be changed to the right (the respective active position flashes)

• Selection of the number

to be changed to the left (the respective active position flashes)

• Increasing the value for selected numeral or number

• Decreasing the value for selected numeral or number

AEJ_N/AES_N-BA-e-1321 51

• P2.2 PrJ – Enter project name

 Press the F-key; the first digit is flashing.  Press the navigation keys to enter project name or number (max. 8 digits).  Confirm settings by pressing the PRINT key. Weighing balance returns to menu.  Press the UNIT-key and the next menu item “P2.3 Ptin”, will appear.

• P2.3 tin – Issue time

 Press the F-key, current setting is flashing  Use the UNIT-key to select among the following settings:

no = Do not display time YES = Display time

 Confirm settings by pressing the PRINT key. Weighing balance returns to menu.  Press the UNIT-key and the next menu item „P2.4 PdAt“ will appear.

• P2.4 PdAt – Display date

 Press the F-key; current setting is flashing.  Use the UNIT-key to select among the following settings:

no = Do not display date YES = Display date

 Confirm settings by pressing the PRINT key. Weighing balance returns to menu.  Press the UNIT-key and the next menu item „P2.5 PUSr“ will appear.

• P2.5 PUSr – Display user

 Press the F-key; current setting is flashing.  Use the UNIT-key to select among the following settings:

no = Do not display user YES = Display user

 Confirm settings by pressing the PRINT key. Weighing balance returns to menu.  Press the UNIT-key; the next menu item “P2.6 PPrJ“ used to display the date

appears.

• P2.6 6 PPrJ – Display project

 Press the F-key; current setting is flashing.  Use the UNIT-key to select among the following settings:

no = Do not display project YES = Display project

 Confirm settings by pressing the PRINT key. Weighing balance returns to menu.  Press the UNIT-key and the next menu item „P2.7 PId“ will appear.

52 AEJ_N/AES_N-BA-e-1321

• P2.7 PId – Display serial number

 Press the F-key; current setting is flashing  Use the UNIT-key to select among the following settings:

no = Do not display date YES = Display date

 Confirm settings by pressing the PRINT key. Weighing balance returns to menu.  Press the UNIT-key and the next menu item “P2.8 PFr” will appear.

• P2.8 PFr – Frame Protocol

 Press the F-key; current setting is flashing.  Use the UNIT-key to select among the following settings:

no = Do not frame protocol YES = Frame protocol

Example:

P2.8 PFr: YES

P2.8 PFr: no

---------------------------------------

Date :20.03.12 Time :11.31.12 UserID :Mustermann Balance ID :180151

19.3406 g

----------------------------------------

Date :20.03.12 Time :11.31.12 UserID :Mustermann Balance ID :180151

19.3406 g

Using broken line at protocol begin and end.

Without broken lines

 Confirm your selection by pressing the PRINT-key; weighing scale will return to

menu.

 Return to weighing mode, see chap. 8.2.

AEJ_N/AES_N-BA-e-1321 53

13 Operation Modes

• Weighing

<bASic>

• Parts counting

<PcS>

• Weighing with tolerance range

<HiLo>

• Percentage determination Reference defining by weighing

<PrcA>

• Percentage determination Numeric reference entry

<PrcB>

• Density determination solid matter

<d_Co>

• Density determi nati o n f lui ds

<d_Li>

• Pipette calibration

<PiPEt>

• Dosing

<Fill>

Calling operating modes (See also chap.9.7):

The first function “F1 bas i c“ appears.

Further functions are triggered with the help

of or key

54 AEJ_N/AES_N-BA-e-1321

13.1 Parts counting

Before the balance can count parts, it must know the average part weight (i.e. reference). Proceed by putting on a certain number of the parts to be counted. The balance determines the total weight and divides it by the number of parts (the socalled reference quantity). Counting is then carried out on the basis o f the calcul a ted average piece weight. As a rule:

The higher the reference quantity the higher the counting exactness.

• Call add-up function

 Press the UNIT-key to select the desired reference number of pieces ,

selectable options include 10, 20, 50 or free.

• Reference piece number 10, 20 or 50

 Confirm your selected reference number of pieces by pressing the PRINT-key

(such as 20).

Current reference number of pieces is displayed.

AEJ_N/AES_N-BA-e-1321 55

Make reference

 Place as many pieces to add-up as required by the set reference piece number.

Remove reference weight. The balance is now in parts counting mode counting all units on the weighing pan.

Tare weighing container

Confirm reference

56 AEJ_N/AES_N-BA-e-1321

• for selection ”optional reference piece number“ FrEE

 Select the place to be changed by pressing the F-key

 Select the digit by pressing the UNIT-key  Confirm the entered reference piece number by pressing the PRINT-key  “LoAd“ appears on the display.

− Place as many counting parts on the balance as the set reference quantity requires, confirm by pressing the PRINT key. Note: If there is no load on the weighing plate when the PRINT-key is pressed, “Er5 outr“ will appear briefly on the display before the display of the balance returns automatically to weighing mode.

 Remove reference weight. The balance is now in parts counting mode counting

all units on the weighing plate.

AEJ_N/AES_N-BA-e-1321 57

• Return to weighing mode

58 AEJ_N/AES_N-BA-e-1321

13.2 Weighing with tolerance range

For weighing with tolerance ranges you can enter individual upper and lower limits. For tolerance controls such as dosaging, apportioning or sorting the scale will display violated upper or lower limits and show the tolerance tag.

The triangular tolerance marker () in the upper part of the display shows whether the goods to be weighed are within the two tolerance limits. The tolerance marker is only in operation during operating mode tolerance weighing; it is otherwise not visible.

The tolerance marker provides the following information:

Goods to be weighed below tolerance limit

Goods to be weighed within tolerance range

Goods to be weighed above tolerance limit

0.0000 �

AEJ_N/AES_N-BA-e-1321 59

• Call function

• Enter lower limit “Lo“

000.0000

008.8900

 Select the digit to be changed by pressing the F-key; each digit currently active

will be flashing.

 Select the digit by pressing the UNIT-key  Confirm by pressing the PRINT key. The display for entering the upper limit

value will appear.

The display for entering the lower limit value will appear.

60 AEJ_N/AES_N-BA-e-1321

• Enter upper limit „Hi“

HKK

000.0000

009.5500

 Select the digit to be changed by pressing the F-key; each digit currently active

will be flashing.

 Select the digit by pressing the UNIT key  Confirm by pressing the PRINT key

From now the balance is in checkweighing mode. Put on goods to be weighed, tolerance control is started With the help of the indicator check if the weighed goods are under, inside or over the default toleranc e .

Note:

If invalid values are entered such as lower tolerance limit greater than upper tolerance limit, the balance will issue the error message “Er8 outr“ and return automatically to weighing mode.

• Return to weighing mode

AEJ_N/AES_N-BA-e-1321 61

13.3 Percent determination

Percent determination allows weight display in percent, in relation to a reference weight. The reference weight can either be determined by weighing (F4 PrcA) or entered numerically (F4 Prcb).

13.3.1 Determining the reference weight by weighing (function F4 PrcA)

 100 % equals placing.  Confirm by pressing the PRINT-key and the weight will be adopted as reference

(100%).

 Remove reference weight; from here the weight of load is shown in percent

based on the reference weight.

62 AEJ_N/AES_N-BA-e-1321

13.3.2 Numeric entry of reference weight (function F4 Prcb)

 Enter percentage of your choice, using cursor keys.

 Select the digit to be change by pressing the F-key; each time the currently

active digit will be blinking.

 Select the digit by pressing the UNIT key  Confirm by pressing the PRINT key

From now on the weight of the load will be shown in percent based on the reference weight.

Display for entering reference (= 100%)

appears.

AEJ_N/AES_N-BA-e-1321 63

Return to weighing mode:

Press repeatedly.

64 AEJ_N/AES_N-BA-e-1321

13.4 Dosing

The weighing scale works at an increase display speed when dispensing mode is enabled (factory setting). However, please keep in mind that the weighing scale reacts very sensitively to ambient conditions. To disable the setting “P6 Func  P6.1 FFun  All” set function “F9 Fill” to “n”; see chap. 9.7

• Enabling dispensing mode

• Return to weighing mode

Press repeatedly.

Indicator  displays the current dispensing mode.

Press repeatedly.

Indicator  expires.

AEJ_N/AES_N-BA-e-1321 65

13.5 Determining the density of soli d matter a nd f luids

For determining density we recommend that you work with the optionally available density kit KERN AES-A01N. This contains all the accessories and aids required for easy and precise density determination. For instructions please see the operating instructions enclosed with the density kit.

Fig.: KERN AES-A01N

No. Description

1 Platform for glass beak er 8 Hook for plummet 2 Frame 9 Sample dish 3 Glass sinker 10 Wire 4 Beaker 11 Filter bowl 5 Holder for thermomet er 12 Additional weights 6 Thermometer 13 Additional frame (tray for sample

dishes/plummets)

7 Wire 14 Immersion basket for density < 1g/cm3

66 AEJ_N/AES_N-BA-e-1321

13.6 Pipette calibration

13.6.1 Entering parameters

Prior to measuring you will have to enter the parameters below.

Parameters Description Set n Number of measurements per test volume, selectable from 5 -15

measurements

Set t

Test temperature, selectable from 0.4 – 25.5°C

Set P

Air pressure test chamber, selectable from 800 – 1050 hPa

Set h

Air humidity test chamber, selectable from 10 – 95 %

For devices with a fixed volume, test volume equals nominal volume.

For devices with variable volume, the following three volumes need to

be tested:

V0 The lower limit for the effective volume or 10 % of the nominal volume

[µl], depending on whichever is the larger.

1/2

About 50 % of the nominal volume [µl]

Nominal volume [µl]

AEJ_N/AES_N-BA-e-1321 67

13.6.2 Carry out series of measurements for test volume V0

 After entering all parameters (See chap. 13.6.1), position the weighing vessel,

wait for the stability display to appear, then tare by pressing the TARE-key; P1 V0 will appear, followed by Place 1.

1. Dispense the test fluid (such as dis ti ll ed w ater ) into the weighing vessel of conduit “V0”.

2. Wait for stability display, then press the PRINT button. Place 2 followed by the current weight display will appear.

3. Tare, by pressing the TARE-key.

 Repeat this test cycle (steps 1 -3) as often as s et in “Set n”

(see chap. 13.6.1).

 After the last test cycle has been confirmed, a display announcing the start of

the second series of measurements “P2 V

1/2

”, followed by Place 1, see chap.

13.6.3, will appear.

68 AEJ_N/AES_N-BA-e-1321

13.6.3 Carry out series of measurements for test volume V

1/2

 Carry out the second series of measurements by f ollowing the same sequence

of operations as the first, see chap. 13.6.2

1. Dispense the test fluid (such as distilled water) into the weighing vessel of conduit “V

1/2

” to be measured.

2. Wait for stability display, then press the PRINT button. Place 2 followed by the current weight display will appear.

3. Tare, by pressing the TARE-key.

 Repeat this test cycle (steps 1 -3) as often as set in “Set n”

(See chap. 13.6.1).

 After the last test cycle has been confirmed a display announcing the start of

the third series of measurements “P2 V1”, followed by Place 1, see chap.

13.6.4, will appear.

AEJ_N/AES_N-BA-e-1321 69

13.6.4 Carry out series of measurements for test volume V1

 Carry out the third series of measurements by following the same sequence of

operations as the previous.

1. Dispense the test fluid (such as distilled water) into the weighing vessel of conduit “V1” to be measured.

2. Wait for stability display, then press the PRINT button. Place 2 followed by the current weight display will appear.

3. Tare, by pressing the TARE-key.

4. Repeat this test cycle (steps 1 -3) as often as set in “Set n” (See chap. 13.6.1).

5. After the last test cy cle has been co nfirmed by pr essing the PRINT-key a protocol will be issued via t he RS232 inter face. See pr intout exampl e below.

70 AEJ_N/AES_N-BA-e-1321

Printout example “calibration data“:

min (V0

) The lower limit for the effective volume or 10 % of the nominal volume

[µl], depending on whichever is the larger.

1/2

About 50 % of the nominal volume [µl]

max

(V1)

Nominal volume [µl]

Arithmetic mean from measur ement series

Systematic measurement deviati on

Standard Deviation

AEJ_N/AES_N-BA-e-1321 71

14 Data output RS 232 “P4 Print“

You can print weighing data automatically via the RS 232C interface or manually pressing the PRINT button via the interface according to the setting in the menu.

This data exchange is asynchronous using ASCII - Code. The following conditions must be met to provide successful communication between

the weighing system and the printer.

• Use a suitable cable to connect the display unit to the interface of the printer. Faultless operation requires an adequate KERN interface cable.

• Communication parameters (baud rate, bits and parity) of display unit and printer must match.

14.1 Technical data

Connection 9 pin d-subminiature bushing

Pin 2: Receive data Pin 3: Transmit data Pin 5: Signal ground

Baud rate 2400/4800/9600/19200 selectable Parity 8 bits, no parity / 1 stop bit

Transfer modes

• Manually after pressing the PRINT key

• Automatically according to stability display

• Continuously, according to setting

• On request by external device (For remote control commands,

see chap. 14.6)

72 AEJ_N/AES_N-BA-e-1321

14.2 Interface cable

Balance

2 (RxD)

3 (TxD)

4 (DTR)

5 (GND)

6 (DSR)

7 (RTS)

8 (CTS)

PC 25 poles

PC 9 poles

Balance

Printer

AEJ_N/AES_N-BA-e-1321 73

14.3 Menu settings “P4 PRINT“

Menu call “P4 PRINT“, see chap. 8.1.

Menu overview

Function Settings Description of options

P4.1 bAud

2400 bit/s

Transfer speed

4800 bit/s *

9600 bit/s

19200 bit/s

P4.2 CntA

no*

Continuous output disa bl ed in stan dar d

weighing unit,

Output requires key operation

YES

Continuous output in standard weighing unit

P4.3 Cntb

no*

Continuous output disabled in current weighing unit, output requires key operation

YES

Continuous output in current weighing unit

P4.4 rEPL

no*

Manual issue after pressing the PRINT key.

YES

Automatic issue of first stable weighing value

Sequence of operations:

1. Taring

2. Place weight, issue of first stable weighing value

3. Renewed output only possible after weight was removed. Prerequisite: Display +/- 50 display steps from zero.

4. Place next weight.

P4.5 PStb

Locked in models with

type approval certificate

no Output even for unstable weighing value YES* Output for stable weighing value only

P4.6 Lo

0.01*

Input minimum weight for automatic output:

Weighing value issued automatically if current weighing value exceeds entered minimum value. The next weighing value will not be issued unless the weighing value has meanwhile dropped below the entered weighing

value.

Factory settings are marked by *.

74 AEJ_N/AES_N-BA-e-1321

1. Baud rate

 Confirm your selection by pressing the PRINT-key; weighing scale will return to

menu.

 Return to weighing mode, see chap. 8.2.

AEJ_N/AES_N-BA-e-1321 75

2. Continuous output in standard weighing unit

 Confirm your selection by pressing the PRINT-key; balance will return to menu.  Return to weighing mode, see chap. 8.2.

3. Continuous output in current weighing unit

 Confirm your selection by pressing the PRINT-key; weighing scale will return to

menu.

 Return to weighing mode, see chap. 8.2.

76 AEJ_N/AES_N-BA-e-1321

4. Set manual or automatic output

 Confirm your selection by pressing the PRINT-key; balance will return to menu.  Return to weighing mode, see chap. 8.2.

5. Set output stable/instable weighing values

 Confirm your selection by pressing the PRINT-key; balance will return to menu.  Return to weighing mode, see chap. 8.2.

AEJ_N/AES_N-BA-e-1321 77

6. Set minimum weight for automatic output

78 AEJ_N/AES_N-BA-e-1321

14.4 Printout examples (KERN YKB-01N)

Stable weighing value

19.9994 g

Instable weighing value

? 29.6343 g

Negative weighed value

- 19.9997 g

Positive weighing value

19.9994 g

Overload

Percent determination

24.995 %

Parts counting

10 pcs

AEJ_N/AES_N-BA-e-1321 79

14.5 Output log

14.5.1 Issue after pressing the PRINT ´button

Stable or instable weighing values are sent according to menu settings “P4.5” PStb (see chap. 14.3)

Data record format:

1 2 3

4 - 12

14 - 16

Stability display

Blank

Signs

Weight value

Unit

Stability display

Blank character for stable value ? For instable value ^ for excess load v for underload

Signs

Blank character for positive value Minus sign for negative value

Weight value

9 signs, right justified

Unit

3 signs, left justified

80 AEJ_N/AES_N-BA-e-1321

14.5.2 PC controlled output

Response message of balance after remote instruction was sent: XX_ Instruction: XX_A CR LF Instruction accepted; will be executed XX_ I CR LF Instruction received; impossible to carry out XX_^ CR LF Instruction received but time overflow error occurred XX_v CR LF Instruction received, but insufficient load XX_E CR LF Error during execution, timeout for stable weighing value

exceeded

Data record format:

1 - 3 4 5 6 7

8 - 16

18 - 20

Remote control

command

Blank Stability display

Blank

Signs

Weight value

Blank

Unit

Instruction:

1. up to 3 signs

Stability display

Blank character for stable value

? For instable value

^ for excess load

v for underload

Signs Blank character for positive value

Minus sign for negative value

Weight value

9 signs, right justified

Unit

3 signs, left justified

14.5.3 Output of date/time

The display of date and time can be enabled under menu item “P2 GLP” (see chap. 12):

• PdAt – yes

• Ptin - yes

AEJ_N/AES_N-BA-e-1321 81

14.6 Remote control instructi ons

Commands Function

T CR LF Taring Z CR LF Zeroing SI CR LF Send weighing value in standard weighing unit immediately S CR LF Send stable weighing value in standard weighing unit SU CR LF Send stable weighing value in current weighing value SUI CR LF Send weighing value immediately in current weighing unit C1 CR LF Start continuous output in standard weighing unit C0 CR LF Stop continuous output in standard weighing unit CU1 CR LF Start continuous output in current weighing unit U0 CR LF Stop continuous output in current weighing unit

In the case of faulty entries the weighing balance generates feedback message “ES CR LF”.

82 AEJ_N/AES_N-BA-e-1321

15 Service, maintenance, disposal

Before any maintenance, cleaning and repair work disconnect the appliance from the oper ati ng vol tage.

15.1 Cleaning

Please do not use aggressive cleaning agents (solvents or similar agents), but a cloth dampened with mild soap suds. Ensure that no liquid penetrates into the device. Polish with a dry soft cloth. Loose residue sample/powder can be removed carefully with a brush or manual vacuum cleaner.

Spilled weighing goods must be removed immediately.

15.2 Service, maintenance



The appliance may only be opened by trained service technicians who are authorized by KERN.

 Ensure that the balance is regularly calibrated, see chap. Testing instruments

control.

15.3 Disposal



Disposal of packaging and appliance must be carried out by operator according to valid national or regional law of the location where the appliance is used.

AEJ_N/AES_N-BA-e-1321 83

16 Instant help

Possible causes of errors:

In case of an error in the program process, briefly turn off the balance and disconnect from power supply. The weighing process must then be restarted from the beginning.

Fault Possible cause

The displayed weight does not glow.

•

The balance is not switched on.

• The mains supply connection has been interrupted (mains cable not plugged in/ faul ty).

•

Power supply interrupted.

The displayed weight is permanently changing

• Draught/air movement

• Glass doors not closed

• Table/floor vibrations

• Weighing pan has contact with other objects.

• Electromagnetic fields / static charging (choose

different location/switch off interfering device if possible)

The weighing result is obviously incorrect

• The display of the balance is not at zero

•

Adjustment is no longer correct.

• The balance is on an uneven surface.

• Great fluctuations in temperature.

• Electromagnetic fields / static charging (choose

different location/switch off interfering device if possible)

Automatic adjustment carried out frequently .

• Severe temperature variations in the room or the instrument

No data transfer between printer and balance.

• Communication settings are wrong.

The menu setting cannot be changed.

• Menu item is locked for models with type approval certificate.

84 AEJ_N/AES_N-BA-e-1321

16.1 Error messages

Er1 Hi Initial weight error Er2 nuLL Value below allowed range Er3 FuL1 Value above allowed range Er4 FuL2 Weighing range exceeded Er5 rout

Value outside allow ed rang e

e.g. tare value <= 0,

Reference weight = 0

Er7 tout Disconnecting time too short Er8 outr

Entry exceeding permitted range for instance during tolerance control: entry upper limit<lower limit

Er9 Lock Function blocked Er10 cal Adjustment error e.g. incorrect adjustment weight

AEJ_N/AES_N-BA-e-1321 85

17 Declaration of conformity

KERN & Sohn GmbH

D-72322 Balingen-Frommern

Postfach 4052

E-Mail: info@kern-sohn.de

Tel: 0049-[0]7433- 9933-0

Fax: 0049-[0]7433-9933-149

Internet: www.kern-sohn.de

Declaration of conformity

EC-Konformitätserklärung EC-Declaration of -Conformity EC-

Déclaration de conformité EC-Declaración de Conformidad

EC-Dichiarazione di conformità EC-Conformiteitverklaring EC- Declaração de conformidade EC- Prohlášení o shode EC-Deklaracja zgodności EC-Заявление о соответствии

Konformitätserklärung

Wir erklären hierm it, dass das Produkt, auf das sich diese Erk lärung bezieht, mit den nachstehenden Normen übereinstimmt.

Declaration of conformity

We hereby declare t hat the product to which this dec laration refers conf orms with the following standards.

Prohlášení o shode

Tímto prohlašujem e, že výr obek, k ter ého se t oto prohl ášení týká, j e v souladu s níže uvedenými normami.

Declaración de conformidad

Manifestamos en la presente que el producto al que se refiere esta declaración está de acuerdo con las normas siguientes

Déclaration de conformité

Nous déclarons avec cela res ponsabilité que le produit, auquel se rapp orte la présente déclaration, est conforme aux normes citées ci-après.

Dichiarazione di conformitá

Dichiariamo con ciò che il prodotto al quale la presente dichiarazione si riferisce è conforme alle norme di seguito citate.

Conformiteitverklaring

Wij verklaren hiermede dat het product, waarop deze verklaring betrekking heeft, met de hierna vermelde normen overeenstemt.

Declaração de conformidade

Declaramos por meio da presente que o produto no qual se refere esta declaração, corresponde às normas seguintes.

Deklaracja

zgodności

Niniejszym oświadczamy, że produkt, którego niniejsze oświadczenie dotyczy,

jest zgodny z poniższymi normami.

RUS

Заявление о

соответствии

Мы заявляем, что продукт, к которому относится данная декларация,

соответствует перечисленным ниже нормам.

Electronic Balance: KERN AEJ_NM / AES_N

EU Directive Standards

2004/108/EC EN 61326-1 : 2006 2006/95/EC EN 61010-1: 2010

Signatur

Signature

Datum

Date

26.03.2013

Ort der Ausstellung

Place of issue

72336 Balingen

Albert Sauter KERN & Sohn GmbH

Geschäftsführer

Managing director

KERN & Sohn GmbH, Ziegelei 1, D-72336 Balingen, Tel. +49-[0]7433/9933-0 Fax +49-[0]7433/9933-149, E-Mail: info@kern-sohn.com, Internet: www.kern-sohn.com

KERN AEJ_N, AES_N Operating Instructions Manual

Specifications and Main Features

Frequently Asked Questions

User Manual