KERN & SOHN FA 6T-3M User Manual

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KERN & Sohn GmbH

Ziegelei 1

E-Mail: info@kern-sohn.com

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

Internet: www.kern-sohn.com

Operating and Installati on Instructions Display devices

KERN KFB/KFN-TM

Version 2.0

02/2012

D-72336 Balingen

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

KFB/KFN-TM-BA_IA-e-1220

KERN KFB/KFN -TM

Display units

Version 2.0 02/2012

Operating and installa t ion instructions

Contents

1 Technical data ................................................................................................ 4

2 Appliance overview ....................................................................................... 5

2.1 Keyboard overview ..................................................................................................................... 7

2.1.1 Numerical input via the navigation buttons................................................................................. 8

2.2 Overview of display .................................................................................................................... 8

3 Basic Information (Gen eral) .......................................................................... 9

3.1 Proper use .................................................................................................................................. 9

3.2 Improper Use .............................................................................................................................. 9

3.3 Warranty ..................................................................................................................................... 9

3.4 Monitoring of Test Resources .................................................................................................. 10

4 Basic Safety Precauti o ns ............................................................................ 10

4.1 Pay attention to the instructions in the Operation Manual........................................................ 10

4.2 Personnel training ..................................................................................................................... 10

5 Transport and storage ................................................................................. 10

5.1 Testing upon acceptance ......................................................................................................... 10

5.2 Packaging / return transport ..................................................................................................... 10

6 Unpacking and placing ................................................................................ 11

6.1 Installation Site, Location of Use .............................................................................................. 11

6.2 Unpacking ................................................................................................................................. 11

6.3 Scope of delivery / serial accessories: ..................................................................................... 11

6.4 Transportation lock (illustration example) ................................................................................. 12

6.5 Error message .......................................................................................................................... 12

6.6 Placing ...................................................................................................................................... 13

6.7 Mains connection ...................................................................................................................... 14

6.8 Storage battery operation (optional) ......................................................................................... 14

6.9 Adjustment ................................................................................................................................ 15

6.9.1 Verified weighing systems ........................................................................................................ 15

6.9.2 Not verifiable weighing systems ............................................................................................... 18

6.10 Linearization ............................................................................................................................. 19

6.10.1 Verified weighing systems:................................................................................................... 19

6.10.2 Non-verified weighing systems ............................................................................................ 20

6.11 Verification 21

2 KFB/KFN-TM-BA_IA-e-1220

7 Operation ...................................................................................................... 24

7.1 Start-up ..................................................................................................................................... 24

7.2 Switching Off ............................................................................................................................ 24

7.3 Zeroing ..................................................................................................................................... 24

7.4 Simple weighing ....................................................................................................................... 24

7.5 Switch-over weighing unit (only not verifiable weighing systems) ........................................... 25

7.6 Weighing with tare .................................................................................................................... 26

7.7 Weighing with tolerance range ................................................................................................. 26

7.8 Manual totalizing ....................................................................................................................... 29

7.9 Automatic adding-up ................................................................................................................. 31

7.10 Parts counting ........................................................................................................................... 32

7.11 Animal weighing ....................................................................................................................... 33

7.12 Lock keyboard .......................................................................................................................... 34

7.13 Display background illumination ............................................................................................... 34

7.14 Automatic switch-off function „AUTO OFF“ .............................................................................. 35

8 Menu ............................................................................................................. 36

8.1 Overview non verifiable weighing systems (contacts of circuit board [K1] not short-circuited) 37

8.2 Overview verified weighing systems (contacts of circuit board [K1] short-circuited by means of jumper) 39

9 Service, maintenance, disposal .................................................................. 43

9.1 Clean ........................................................................................................................................ 43

9.2 Service, maintenance ............................................................................................................... 43

9.3 Disposal .................................................................................................................................... 43

9.4 Error messages ........................................................................................................................ 43

10 Data output RS 232C ................................................................................... 45

10.1 Technical data .......................................................................................................................... 45

10.2 Printer mode ............................................................................................................................. 46

10.3 Output log ................................................................................................................................. 46

10.4 Remote control instructions ...................................................................................................... 46

11 Instant help ................................................................................................... 47

12 Installing display unit / weighing bridge .................................................... 48

12.1 Technical data .......................................................................................................................... 48

12.2 Weighing system design........................................................................................................... 48

12.3 How to connect the platform ..................................................................................................... 49

12.4 Configure display unit ............................................................................................................... 50

12.4.1 Verified weighing systems (contacts of circuit board [K1] short-circuited by means of jumper) 50

12.4.2 Non verifiable weighing systems (contacts of circuit board [K1] not short-circuited ) .......... 56

13 Declaration of Conformity / Type Approval Certificate / Test Certificate 60

KFB/KFN-TM-BA_IA-e-1220 3

1 Technical data

KERN KFB-TM KFN-TM

Display 5 ½ - digit

Resolution (verified) 6000

Single (Max.) 6.000 e

Dual (Max.) 3.000 e

Resolution (non-verified) 30.000

Weighing ranges 2

Divisions 1,2,5,…10n

Weighing Units kg

Functions

Display LCD 52 mm digits with back lighting

DMS weighing cells

Range calibration We recommend ≥ 50 % max.

Data output RS232

Electric Supply

Housing 250 x 160 x 58 266 x 165 x 96

Admissible ambient temperature

Net weight 1.5 kg 2 kg

Rechargeable battery (optional)

Operating / charge time

Weighing with tolerance range, Totalizing, Animal weighing

80-100 Ω. Max. 4 item per 350 Ω;

Sensitivity 2-3 mV/V

Input voltage 220 V – 240 V, 50 Hz

Power pack secondary voltage 9V, 800mA

0°C – 40°C (non-verified)

-10°C – 40°C (verified)

35 h / 12 h 90 h / 12 h

RS 232 interface Standard Option

Tripod KERN BFS-07, option

Support base incl. wall bracket

IP protection -

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Standard

IP 67 as per DIN 60529

(rechargeable battery

operation only)

2 Appliance overview

KFB-TM: Synthetic finis h

1. Status of rechargeable battery

2. Keyboard

3. Weight display

4. Tolerance margin, see chap. 7.7

5. Weighing unit

6. RS-232

7. Input connection load cell cable

8. Guide rail support base / stand

9. End stop support base / stand

10. Mains adapter connection

11. Adjustment switch

KFB/KFN-TM-BA_IA-e-1220 5

KFN-TM: Stainless steel finish

1. Status of rechargeable battery

2. Keyboard

3. Weight display

4. For tolerance mark see chap. 7.7

5. Weighing unit

6. Input connection load cell cable

7. Mains adapter connection

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2.1 Keyboard overview

Key Function

• Turn on/off

• Zeroing

Navigation button

Navigation key 

Navigation key 

Navigation key 

• Confirm entry

• Taring

• At numeric input increase flashing digit

• Scroll forward in menu

• Display sum total

• Digit selection to the right

• Add weighing value to summation memory

• Digit selection to the left

• Calculate weighing data via interface

• Delete

• Change between gross  and net weight

ESC

KFB/KFN-TM-BA_IA-e-1220 7

• Back to menu/weighing mode

• Call up animal weighing function

• Call up weighing with tolerance range

• Delete total added memory

2.1.1 Numerical input via the navigation buttons

 Press and current setting will be displayed. The first digit will be flashing

and is ready for changing.

 If you do not wish to change the first digit, press and the second digit will

start flashing.

Each time you press , the display will move to the subsequent digit, after the last digit the display will return to the first digit.

 To change the selected (flashing) digit, press repeatedly until the desired

value is displayed. Then press to access further digits and change them by

 Complete your entry by .

2.2 Overview of display

Display Significance

Battery very low

STABLE Stability display

ZERO Zero indicator

GROSS Gross weight

NET Net weight

AUTO Automatic add-up enabled

Kg Weighing unit

M+ Totalisation

LED

+ / / -

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Indicators for weighing with tolerance range

3 Basic Information (General)

3.1 Proper use

The display unit acquired by you is used in combination with a weighing plate and serves to determine the weighing value of material to be weighed. It is intended to be used as a “non-automatic weighing system”, i.e. the material to be weighed is manually and carefully placed in the centre of the weighing plate. As soon as a stable weighing value is reached the weighing value can be read.

3.2 Improper Use

Do not use display unit for dynamic weighings. 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“ in the display unit. (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 (max) of the weighing plate, minus a possibly existing tare load, must be strictly avoided. Both, the weighing plate and the display unit may be damaged during this process. Never operate display unit in explosive environment. The serial version is not explosion protected. Changes to the display unit's design are not permitted. This may lead to incorrect weighing results, safety-related faults and destruction of the display unit. The display unit may only be operated in accordance with the described default settings. 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

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3.4 Monitoring of Test Resources

In the framework of quality assurance the measuring-related properties of the display unit 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 display units’ test substances and the test weights required for this. In KERN’s accredited DKD calibration laboratory test weights and display units may be calibrated (return to the national standard) fast and at moderate cost.

4 Basic Safety Precautions

4.1 Pay attention to the instructions in the Operation Manua l

Carefully read this operation manual before setup and commissioning, even if you are already familiar with KERN balances.

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.  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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• Display Unit

6 Unpack ing and placing

6.1 Installation Site, Location of Use

The display units are designed in a way that reliable weighing results are achieved in common conditions of use. Precise and fast work is achieved by selecting the right place for your display unit and your weighing plate.

On the installation site observe the following:

• Place the display unit and the weighing plate on a stable, even surface.

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

next to a radiator or in the direct sunlight;

• Protect the display unit and the weighing plate against direct draft from open windows or doors.

• Avoid jarring during weighing;

• Protect the display unit and the weighing plate against high humidity, vapours

and dust.

• Do not expose the display unit to extreme dampness for longer periods of time. Non-permitted condensation (condensation of air humidity 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.

Major display deviations (incorrect weighing results) may be experienced should electromagnetic fields (e.g. due to mobile phones or radio equipment), static electricity accumulations or instable power supply occur. Change location or remove source of interference.

6.2 Unpacking

Take the display unit carefully out of its packaging, remove the plastic jacket and install it at the designated work space.

6.3 Scope of delivery / serial accessories:

• Mains adapter

• Support base incl. wall bracket

• Operating instructions

KFB/KFN-TM-BA_IA-e-1220 11

Transport Securing

6.4 Transportation lock (illustration example)

Please note: if the display unit is used together with platform with transportation lock, this transportation lock must be released prior to use:

6.5 Error message

As soon as an error message appears in the balance display, the balance must not more be used, e.g. Err 4

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6.6 Placing

Mount the display unit in a way that facilitates operation and where it is easy to see.

Usage with support base (KFB-TM only)

Push support base holder in guide rail [8] up to end stop [9], see chpt 2.

Usage with wall mount (KFB-TM only)

Use the wall mount to affix the display unit to the wall.

Using with tripod (optional)

An optional tripod (KERN BFS-07) is available if the display unit is to be mounted in a raised position.

KFB/KFN-TM-BA_IA-e-1220 13

6.7 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.

6.8 Storage battery operation (optional)

Before the first use, the battery should be charged by connecting it to the mains power supply for at least 12 hours.

If the weight display shows , this is an indication that the capacity of the rechargeable battery is almost exhausted. The unit will be ready for operation for approx. another 10 hours before switching off automatically. Charge the battery with the help of the supplied power pack. The LED display informs you during loading about the loading status of the rechargeable battery.

red: Voltage has dropped below prescribed minimum. green: Battery is completely discharged yellow: Charging storage battery

To conserve energy, enable the automatic switch-off function „AUTO OFF“, see chap. 7.14.

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•

6.9 Adjustment

As the acceleration value due to gravity is not the same at every location on earth, each display unit with connected weighing plate must be coordinated - in compliance with the underlying physical weighing principle - to the existing acceleration due to gravity at its place of location (only if the weighing system 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 measuring values it is also recommended to adjust the display unit periodically in weighing operation.

• In weighing systems with a resolution of < 15 000 dividing steps an adjustment is recommended. In weighing systems with a resolution of > 15 000 dividing steps a linearisation is recommended (see chap. 6.10).

• Prepare the required adjustment weight. The weight to be used depends on the capacity of the scale. Carry out adjustment as near as possible to the scale’s maximum weight. Info about test weights can be found on the Internet at: http://www.kern-sohn.com.

• Observe stable environmental conditions. Stabilisation requires a certain warm-up time.

6.9.1 Verified weighing systems

In verified weighing systems the menu item for adjustment „P2 mode“ is blocked.

KERN KFB-TM

To disable the access lock, destroy the seal and actuate the adjustment switch. Position of the adjustment switch see chap. 6.11

KERN KFN-TM

To override the blocked access you will have to destroy the seal before calling up the menu and to short-circuit the two contacts on the circuit board [K2], using a jumper (See chap. 6.11).

Attention: After destruction of the seal the weighing system must be re-verified by an authorised agency and a new verification wire/seal mark fitted before it can be reused for applications subject to verification.

KFB/KFN-TM-BA_IA-e-1220 15

Call up menu:

1. Switch-on balance and during the selftest press .

2. Press , , subsequently, the first menu block „PO CHK“ will be displayed.

3. Press repeatedly until „P2 mode“ will be displayed.

For the KFB-TM model operate the adjustment switch.

4. Press and select the set weighing scales type by .

= Single-range balance

= Dual range balance

= Multi-interval balance

5. Acknowledge with .

6. Press repeatedly until „CAL“ will be displayed.

7. Confirm with and select setting „noLin“ by .



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How to carry out an adjustment:

 Confirm menu setting „noLin“ by .

Ensure that there are no objects on the weighing plate.

 Wait for stability display, then press .

 The currently set adjustment weight will be displayed.

 To change by using the navigation buttons (see chap. 2.1.1)

select the desired setting, the active digit is flashing.

 Acknowledge with .

 Carefully place adjusting weight in the centre of the weighing

plate. Wait for stability display, then press .

 After the adjustment the balance will carry out a self-test.

Remove adjusting weight during selftest, balance will return

into weighing mode automatically. An adjusting error or incorrect adjusting weight will be indicated by the error message; repeat adjustment procedure.



KFB/KFN-TM-BA_IA-e-1220 17

Call up menu:



6.9.2 Non verifiable weighing systems

1. Switch-on balance and during the selftest press .

2. Press subsequently , , the first menu block „PO CHK“ will be displayed.

3. Press repeatedly until „P3 CAL“ will be displayed.

4. Confirm with ; press repeatedly until „CAL“ appears.

5. Acknowledge using , the current setting is displayed.

 Press to confirm; press to select setting.

noLin = adjustment LineAr = linearization, see chap. 6.10

How to carry out adjustment:

 Confirm menu setting „noLin“ by .

Ensure that there are no objects on the weighing plate.



 Wait for stability display, then press .

 The currently set adjustment weight will be displayed.

 To change by using the navigation buttons (see chap. 2.1.1)

select the desired setting, the active digit is flashing.

 Acknowledge with .  Carefully place adjusting weight in the centre of the weighing

plate. Wait for stability display, then press .

 After the adjustment the balance will carry out a self-test.

Remove adjusting weight during selftest, balance will return

into weighing mode automatically. An adjusting error or incorrect adjusting weight will be indicated by the error message; repeat adjustment procedure.

18 KFB/KFN-TM-BA_IA-e-1220

• In balances with a resolution of > 15 000 dividing steps carrying out a

the adjustment switch see chap. 6.11

6.10 Linearization

Linearity shows the greatest deviation of a weight display on the scale to the value of the respective test weight according to plus and minus over the entire weighing range. If linearity deviation is discovered during a testing instrument control, you can improve this by means of linearization.

6.10.1 Verified weighing systems:

linearisation is recommended.

• Carrying out linearization is restricted to specialist staff possessing well acquainted with the workings of weighing scales.

• The test weights to be used must be adapted to the weighing scale’s specifications; see chapter “testing instruments control”.

• Observe stable environmental conditions. Stabilisation requires a certain warm-up time.

• After successful linearisation you will have to carry out calibration; see chapter “testing instruments control”.

• The adjustment is locked for verified balances. To disable the access lock, destroy the seal and actuate the adjustment switch. Position of

 Menu item P2 modeCalCall up liner, see chap. 6.9.1

 Confirm by , the password query „Pn“ will be displayed.

 Press subsequently , , .

Ensure that there are no objects on the weighing pan.

 Wait for stability display, then press .

 When “Ld 1“ is displayed, put the first adjustment weight (1/3

max) carefully in the centre of the weighing platform. Wait for

stability display, then press .

 When “Ld 2“ is displayed, put the second adjustment weight

(2/3 max) carefully in the centre of the weighing platform.

Wait for stability display, then press .

 When “Ld 3“ is displayed, put the third adjustment weight

(max) carefully in the centre of the weighing platform. Wait

for stability display, then press .

KFB/KFN-TM-BA_IA-e-1220 19

 After linearisation the balance will carry out a self-test.

Remove adjusting weight during selftest, balance will return

into weighing mode automatically.

6.10.2 Non-verified weighing systems

 Call-up menu item P3 CALCalLiner, see chap. 6.9.1

 Confirm by , the password query „Pn“ will be displayed.

 Press , , subsequently.

Ensure that there are no objects on the weighing pan.

 Wait for stability display, then press .

 When “Ld 1“ is displayed, put the first adjustment weight (1/3

max) carefully in the centre of the weighing platform. Wait for

stability display, then press .

 When “Ld 2“ is displayed, put the second adjustment weight

(2/3 max) carefully in the centre of the weighing platform.

Wait for stability display, then press .

 When “Ld 3“ is displayed, put the third adjustment weight

(max) carefully in the centre of the weighing platform. Wait

for stability display, then press .

 After a successful linearisation the balance will carry out a

self-test. Remove adjusting weight during selftest, balance

will return into weighing mode automatically.

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6.11 Verification

General introduction: According to EU directive 90/384/EEC 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 purpose. d) For manufacturing final packages.

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

Verification notes:

An EU Qualification Approval is in existence for verified weighing systems. If a balance is used where obligation to verify exists as described above, it must be verified and re-verified at regular intervals. Reverification is carried out according to the relevant national statutory 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 weighing system is invalid without the "seal".

KFB/KFN-TM-BA_IA-e-1220 21

[K1]

Notes on verified weighing systems KFB-TM:

Access to conductor plate:

• Remove seal

• Open display unit

• The application of the display unit as a weighing system able to be verified

requires that the contacts of the circuit board are short-circuited with the help

of a jumper [K1].

For non verifiable weighing systems remove the jumper.

In verified weighing systems the menu item for adjustment, „P2 mode“ will be blocked.

To disable the access lock, destroy the seal and actuate the adjustment switch.

Position of seals and adjusting switch

1. Self-destroying seal mark

2. Adjustment switch

3. Cover of adjustment switch

4. Self-destroying seal mark

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[K1]

[K2]

KFN-TM:

Access to conductor plate:

• Remove seal

• Open display unit

• The application of the display unit as a weighing system able to be verified

requires that the contacts of the circuit board are short-circuited with the help

of a jumper [K1]. For non verifiable weighing systems remove the jumper.

• To adjust, short-circuit the contacts of the circuit board, using a jumper [K2].

KFB/KFN-TM-BA_IA-e-1220 23

exceeding the stated maximum load (max) of the device, minus a

7 Operation

7.1 Start-up

 Press and the instrument will carry out a self-test. As soon as the weight

display appears, the instrument will be ready to weigh.

7.2 Switching Off

 Press and the display will disappear.

7.3 Zeroing

Resetting to zero corrects the influence of light soiling on the weighing plate. The unit is equipped with an automatic zero setting function. Therefore the unit can be reset to zero at any time as follows:

 To unload the weighing system

 Press and zero display as well as indicator ZERO will appear.

7.4 Simple weighing

 Place goods to be weighed on balance.  Wait until stability display STABLE appears.  Read weighing result.

Overload warning

Overloading possibly existing tare load, must be strictly avoided. This could damage the instrument. Exceeding maximum load is indicated by the display of „----“ and an audio sound. Unload weighing system or reduce preload.

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7.5 Switch-over weighing unit (only not verifiable weighing systems)

How to enable weighing units:

 Call-up menu item P5 Unt, see chap. 8.1

 Press and the first weighing unit with the current setting

will be displayed.

 To enable [on] / disable [off] the displayed weighing unit,

press

 Acknowledge with . The next unit with the current setting

will be displayed.

 To enable [off] / disable [on] the displayed weighing unit,

press .

 Acknowledge with .

 Repeat sequence for each weighing unit.

Note: „tj“ and „Hj“ cannot be activated at the same time, only either

... or ... .



 Return to weighing mode using

Switch-over weighing unit:

 Keep pressed, the display changes over to the

weighing units activated before (e.g. kg  lb)



KFB/KFN-TM-BA_IA-e-1220 25

7.6 Weighing with tare

 Deposit weighing vessel. After successful standstill control press the button.

Zero display and indicator NET appear.

The weight of the container is now internally saved.

 Weigh the material, the net weight will be indicated.  The weight of the weighing container will be displayed as a minus number after

removing the weighing container.

 The tare procedure can be repeated as many times as necessary, for example

with initial weighing of several components for a mix (add-on weighing). The limit is reached when the taring range capacity (see type plate)is full.

 To change between gross weight and net weight, press .

 To delete the tare value, remove load from weighing plate and press .

7.7 Weighing with tolerance range

You can set an upper or lower limit when weighing with tolerance range and thus ensure that the weighed load remains exactly within the set limits. During tolerance tests such as dosing, portioning and sorting the unit will indicate exceeded or undershot limits by emitting an optical or acoustic signal.

Audio signal:

The acoustic signal depends on the settings in menu block „BEEP“. Options:

• no

• ok

• ng

Acoustic signal turned off

An acoustic signal sounds when load is within tolerance limits

An acoustic signal sounds when load is beyond tolerance limits

26 KFB/KFN-TM-BA_IA-e-1220



Optical signal:

Three colour signal lights indicate whether the load is within the two tolerance limits. The signal lights provide the following information:

The settings for tolerance weighing may be called up either via menu block „P0 CHK“

(see chap. 8) or faster via the key combination

Settings

Goods to be weighed above tolerance limit

Goods to be weighed within tolerance range

Goods to be weighed below tolerance limit

Red signal light glowing

Green signal light glowing

Red signal light glowing



 Press and at the same time in weighing mode.

 Press until the display for entering the lower limit value

appears.

 Press , current setting will be displayed.

 To enter the lower limit, e. g. 1000 Kg, press the navigation

keys (See chap. 2.1.1); the currently enabled digit will be flashing.

 Confirm input by .

 Use to select

KFB/KFN-TM-BA_IA-e-1220 27

 Press and the current setting for the upper limit will be

displayed.

 Press the navigation keys (See chap. 2.1.1) to enter the

upper limit, e.g. 1,100 kg; the currently enabled digit will be flashing.

 Confirm input by .

 Use to select

 Press and the current setting for the acoustic signal will

be shown.

 Select desired setting (no, ok, ng) by .

 Confirm input by .

 Press repeatedly; weighing system is in tolerance

weighing mode. From here evaluation takes place whether the goods to be weighed are within the two tolerance limits.

Weighing with tolerance range

 Tare when using a weighing container

 Put on goods to be weighed, tolerance control is started The signal lights

indicate whether the load is within the two set limits.

Load below specified tolerance

Red signal light

next to „-“ ON illuminated

• The tolerance control is not active when the weight is under 20d.

• To delete limits, enter “00.000 kg“.

Load within specified tolerance

Green signal light

next to „„ illuminated

Load exceeds specified tolerance

Red signal light

next to „+“ ON illuminated

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• Menu setting:

• The totalizing function is not active when the weight is under 20d.

7.8 Manual totalizing

With this function the individual weighing values are added into the summation

memory by pressing and edited, when an optional printer is connected.

„P1 COM“ or „P2 COM“  „MODE“  „PR2““, see chap. 8

Add up:

 Place weighing goods A.

Wait until the stability display STABLE appears, then press . The weight value will be saved and printed if an optional printer is connected.

 Remove the weighed good. More weighed goods can only be added when the

display ≤ zero.

 Place goods to be weighed B.

Wait until the stability display appears, then press . Weighing value will be added to summation memory and possibly printed. The number of weighing actions, followed by the total weight will be displayed for 2 sec.

 Add more weighed goods as described before.

Please note that the weighing system must be unloaded between the individual weighing procedures.

 This process may be repeated 99 times or till such time as the capacity of the

weighing system has been exhausted.

Display of the saved weighing data:

 Press , number of weighing, followed by the total weight will be displayed for

2 sec. Press to print out this display.

KFB/KFN-TM-BA_IA-e-1220 29

Menu setting

Delete weighing data:

 Press and at the same time The data in the summation memory are

deleted.

Printout example KERN YKB-01N, verified weighing system:

„P1 COM“ or „P2 COM“  „Lab 2“ / Prt 7“

„P1 COM“ or „P2 COM“  „Lab 0“ / Prt 0“

1 First weighing

2 Second weighing

3 Third weighing

4 Number of weighings / total

30 KFB/KFN-TM-BA_IA-e-1220

• Menu settings:

7.8.

7.9 Automatic adding-up

With this function the individual weighing values are automatically added into the

summation memory when the balance is unloaded without pressing and edited, when an optional printer is connected.

„P1 COM“ or „P2 COM  „MODE“  „AUTO““, see chap. 8 Der Indikator AUTO wird angezeigt.

Add up:

 Place weighing goods A.

After the standstill control sounds a signal tone. The weighing value will be added to the summation memory and printed.

 Remove the weighed good. More weighed goods can only be added when the

display ≤ zero.

 Place goods to be weighed B.

After the standstill control sounds a signal tone. The weighing value will be added to the summation memory and printed. Number of weighing, followed by the total weight will be displayed for 2 sec.

 Add more weighed goods as described before.

Please note that the weighing system must be unloaded between the individual weighing procedures.

 This process may be repeated 99 times or till such time as the capacity of the

weighing system has been exhausted.

Display and delete the weighing data, as well as printout examples see chap.

KFB/KFN-TM-BA_IA-e-1220 31

7.10 Parts c ounti ng

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 of the calculated average piece weight. As a rule: The higher the reference quantity the higher the counting exactness.

 In weighing mode , press and hold until the message „P

10“ appears that is used to set the reference quantity.

 Use to set the desired reference quantity (such as 100),

options include P 10, P 20, P 50, P100, P 200.

 Place as many items to be counted (such as 100 items) as

demanded by the set reference quantity and confirm by The weighing scales calculate the reference weight. The current quantity (such as 100 items) will be displayed.

 Remove reference weight. The balance is from now in parts

counting mode counting all units on the weighing plate.

 Back to Weighing mode by .





32 KFB/KFN-TM-BA_IA-e-1220

7.11 Animal weighing

The animal weighing function is suitable for weighing restless loads. The weighing system will display a mean value derived from several weighing results.

The animal weighing program can be enabled by either calling up menu block

„P3 OTH“ or „P4 OTH“  „ANM“  „ON“ (See chap. 8) or faster via key combination.

The indicator shows HOLD as long as the animal weighing function remains enabled.

 Place the load on the weighing system and wait until the scale is steady.

 Press and at the same time; you will hear an acoustic signal, indicating

that the animal weighing function is enabled. Whilst averaging is taking place you can add or remove loads as the measuring value will be constantly updated.

 To deactivate the animal weighing function press and at the same time.

KFB/KFN-TM-BA_IA-e-1220 33

7.12 Lock keyboard

To enable/disable the keyboard lock go to menu item „P3 OTH“ or „P4 OTH“  „LOCK“, see chap.8.

Whilst the function is enabled the keyboard will self-lock after no key has been

pressed for 10 minutes. „K-LCK“ will be displayed as soon as a key is pressed.

To disable the lock, press , and hold plus (2 s) until „U LCK“ appears.

7.13 Display background illumination

 Keep pressed (3s) until „setbl“ appears.

 Press again, the current setting will be displayed.

 Use to select the desired setting.

bl on Continuous background lighting bl off Background illumination off bl Auto Automatic background illumination on when weighing pate is

loaded or key pressed.

 Either save by or cancel by pressing .

Back to weighing mode by .

34 KFB/KFN-TM-BA_IA-e-1220

7.14 Automatic switch-off function „AUTO OFF“

The unit is automatically switched off within the preset time when the display unit or the weighing bridge are not operated.

 Keep pressed (3s) until „setbl“ appears.

 Press to call up AUTO OFF-function

 Press , the current setting will be displayed.

 Use to select the desired setting.

of 0 AUTO OFF - function disabled of 3 Weighing system will be turned off after 3 min. of 5 Weighing system will be turned off after 5 min. of 15 Weighing system will be turned off after 15 min. of 30 Weighing system will be turned off after 30 min.

 Either save by or cancel by pressing .

Back to weighing mode by .

KFB/KFN-TM-BA_IA-e-1220 35

current setting will be displayed.

8 Menu

The application of the display unit as a verified weighing system requires that you short-circuit the two contacts [K1] of the circuit board, using a jumper. To that effect, a menu for verified weighing systems is available. For menu layout see chap. 8.2. There is no jumper for weighing systems that cannot be verified. To that effect, a menu is available for weighing systems that cannot be verified, Menu layout see chap. 8.1

Navigation in the menu:

Call up menu

 Switch-on balance and during the selftest press .

 Press , , subsequently, the first menu

block „PO CHK“ will be displayed.

Select menu block

Select setting

Change settings

Acknowledge setting / exit the menu

Return to weighing mode

 With help of , the individual menu items can be

selected one after the other.

 Confirm selected menu item by pressing . The

 To change to the available settings, press the

navigations keys as described in chap. 2.1.

 Either save by pressing or cancel by pressing .

 Press repeatedly to exit menu.

36 KFB/KFN-TM-BA_IA-e-1220

Menu block Main menu

Menu item Submenu

Acoustic signal for weighing with tolerance range switched off

P1 REF

P2 COM MODE

CONT

Continuous data output

ST1

One output for stable weighing value

STC

Continuous data output of stable weighing values

PR1 Output after pressing

PR2

Manual totalizing, see chap. 7.8.

added to the summation memory and issued.

AUTO*

For automatic add-up see chap. 7.9.

memory on unloading of weighing scale.

wirel

kit 1

BAUD

Available Baudrate: 600, 1200, 2400, 4800, 9600*

8.1 Overview non verifiable weighing systems (contacts of circuit board [K1] not short-circuited)

Available settings / explanation

PO CHK

Weighing with tolerance range, see chap. 7.7

Zero point settings

SET H Upper limit value, input see chap. 7.7

SET LO Lower limit value, input see chap. 7.7

PCS H Not documented

PCS L Not documented

BEEP no

ok Audio sound when load is within tolerance limits

nG Audio sound when load is beyond tolerance limits

A2n0 Automatic zero point correction (Autozero) by changing the

display, digits selectable (0.5d, 1d, 2d, 4d)

0AUto Zero setting range

Load range where the display after switching-on the balance is set to zero. Selectable 0, 2, 5, 10, 20, 50, 100 %

0rAGE Zero setting range

Load range where the display is set to zero by pressing

. Selectable 0, 2, 4, 10 , 20* , 50, 100%.

0tArE Automatic taring „on / off“, taring range adjustable in menu

item „0Auto“.

SPEEd Not documented

Zero Zero point setting

Interface parameter

ASK

Press and the weighing value will be

This function is used to issue and add individual weighing values automatically to the summation

For remote control commands, see chap. 10.4

Not documented

KFB/KFN-TM-BA_IA-e-1220 37

7E1

7 bits, even parity

7o1

7 bits, odd parity

8n1*

8 bits, no parity

PTYPE tPUP*

Standard printer setting

LP50

Not documented

Lab

Lab x

(Lab 0*)

Prt

Prt x

(Prt 0*)

LAnG

eng*

Standard settings English

chn

P3 CAL

COUNT

Display internal resolution

DECI

Position of the decimal dot

DUAL

Setting balance type, capacity (Max) and readability (d)

off

Single-range balance

R1 inc

Readability

R1 cap

Capacity

Dual range balance

R1 inc

Readability 1st weighing range

R1 cap

Capacity 1st weighing range

R2 inc

Readability 2nd weighing range

R2 cap

Capacity 2nd weighing range

CAL

noLin

For adjustment, see chap. 6.9.2

Liner

For linearization, see chap. 6.10.2

GrA

Not documented

Keyboard lock enabled, see chap. 7.11

off*

Keyboard lock disabled

Animal weighing enabled, see chap. 7.10

off*

Animal weighing disabled

kg on* off

g on off*

lb on off*

oz on off*

tJ on off

HJ on off

Configuration data see chap. 12.4

For data output format, see chap.8.2, tab. 1

P4 OTH

LOCK

ANM

P5 Unt

Switch-over weighing unit, see chap. 7.5

P6 xcl Not documented

P7 rst

Use to reset balance settings to factory default.

P8 uwb Not documented

Factory settings are marked by *.

38 KFB/KFN-TM-BA_IA-e-1220

Menu block Main menu

Menu item Submenu

Acoustic signal for weighing with tolerance range switched off

Audio sound when load is within tolerance limits

Audio sound when load is beyond tolerance limits

8.2 Overview verified weighing systems (contacts of circuit board [K1] short-circuited by means of jumper)

In verified weighing systems the access to „P2 mode and „P4 tAr“ is locked.

KERN KFB-TM:

To disable the access lock, destroy the seal and actuate the adjustment switch. Position of the adjustment switch see chap. 6.11.

KERN KFN-TM:

In order to unlock the access, the seal must be destroyed and both contacts of the printed circuit board [K2] must be short-circuited by a jumper, see chap. 6.11.

PO CHK

Weighing with tolerance range, see chap. 7.7

SET H

SET LO

PCS H Not documented

PCS L Not documented

BEEP

Available settings / explanation

Upper limit value, input see chap. 7.7

Lower limit value, input see chap. 7.7

KFB/KFN-TM-BA_IA-e-1220 39

P1 COM

MODE

CONT

Continuous data output

ST1

One output for stable weighing value

STC

Continuous data output of stable weighing values

PR1

Output after pressing

PR2

Manual totalizing, see chap. 7.8

added to the summation memory and issued.

AUTO

ASK

For remote control commands, see chap. 10.4

baud

Available Baudrate: 600, 1200, 2400, 4800, 9600

7E1

7 bits, even parity

7 bits, odd parity

8 bits, no parity

PtYPE

Standard printer setting

Not documented

Lab

Prt

Interface parameter

Press and the weighing value will be

For automatic totalizing see chap. 7.9 This function is used to issue and add individual weighing values automatically to the summation memory on unloading of weighing scale.

7o1 8n1 tPUP LP50

Lab x

Details see following table 1

Prt x

40 KFB/KFN-TM-BA_IA-e-1220

P2 mode

SiGr

Single-range balance

COUNT

Display internal resolution

DECI

Position of the decimal dot

Div.

Readability [d] / verification value[s]

CAP

Balance capacity [Max]

noLin

Adjustment, see chap. 6.9

LinEr

Linearisation, see chap. 6.10

GrA

Not documented

dUAL 1

Dual range balance

scales will remain in 2nd range.

COUNT

Display internal resolution

DECI

Position of the decimal dot

Readability [d] / verification value [e]

1. weighing range

Readability [d] / verification value [e]

2. weighing range

Weighing scale capacity [max]

1. Weighing range

Weighing scale capacity [max]

2. Weighing range

noLin

Adjustment, see chap. 6.9

LinEr

For linearization, see chap. 6.10

GrA

Not documented

dUAL 2

Multi-interval balance

changed during loading and unloading.

COUNT

Display internal resolution

DECI

Position of the decimal dot

Readability [d] / verification value [e]

1. weighing range

Readability [d] / verification value [e]

2. weighing range

Weighing scale capacity [max]

1. Weighing range

Weighing scale capacity [max]

2. Weighing range

noLin

Adjustment, see chap. 0

LinEr

Linearisation, see chap. 6.10

GrA

Not documented

P3 OTH

Keyboard lock enabled

off

Keyboard lock disabled

Animal weighing enabled

off

Animal weighing disabled

P4 tAr

Confirm input by .

Konfigurationsdaten

CAL

Balance with two weighing ranges and different maximum load and weighing ranges and interval sizes but only one loadsupporting pan, whereby each range extends from zero to the respective maximum capacity. When load is removed, weighing

div 1

div.

div 2

CAP 1

CAP

CAP 2

CAL

Weighing scales with one weighing range subdivided into partial weighing ranges, each providing a different scale interval. The scale interval depends on the applied load and is automatically

div 1

div.

div 2

CAP 1

CAP

CAP 2

CAL

LOCK

s. Kap. 7.10 / 7.11

ANM

Restricted taring range

KFB/KFN-TM-BA_IA-e-1220 41

Press , the current setting will be displayed. Using the

navigation buttons (see chap. 2.1.1) select the desired setting, the active digit is flashing.

NT:

0.666 kg

GS:

0.222 kg

NT:

TOTAL:

0.222 kg

NT:

0.666 kg

GS:

0.222 kg

NT:

TOTAL:

0.222 kg

0.444 kg

NT:

0.666 kg

GS:

0.222 kg

NT:

TOTAL:

0.222 kg

0.666 kg

GS:

0.888 kg

NT:

0.666 kg

GS:

0.222 kg

NT:

TOTAL:

0.222 kg

0.888 kg

NO:

TOTAL:

1.000 kg

NO:

TOTAL:

1.222 kg

NO:

TOTAL:

1.444 kg

NO:

TOTAL:

1.666 kg

GS / GW

Gross weight

Net weight

Tare weight

Number weighing processes

TOTAL

Total of all individual weighings

Tab. 1. Printout examples

Lab

0 1 2 3

GS: 0.888 kg

GS:

NO: GS:

GS:

11/11/11

0.888 kg

TW: GW:

TW: GW::

NT: TW: GW::

0.222 kg

0.888 kg

0.222 kg

0.888 kg

0.222 kg

0.888 kg

0.222 kg

0.888 kg

0.666 kg

0.222 kg

0.888 kg

0.666 kg

0.222 kg

0.888 kg

TOTAL:

GS: TOTAL:

0.222 kg

0.444 kg

0.666 kg

0.888 kg

0.222 kg

1.000 kg

0.222 kg

1.222 kg

TW: GW:

NT: TW: GW:

0.666 kg

0.888 kg

0.666 kg

0.888 kg

0.666 kg

0.888 kg

0.666 kg

0.888 kg

0.222 kg

0.666 kg

0.888 kg

0.222 kg

0.666 kg

0.888 kg

GS:

0.888 kg

NT: TW: GW::

0.666 kg

0.222 kg

0.888 kg

0.666 kg

0.222 kg

0.888 kg

GS: TOTAL:

0.222 kg

1.444 kg

0.222 kg

1.666 kg

NT: TW: GW:

0.222 kg

0.666 kg

0.888 kg

0.222 kg

0.666 kg

0.888 kg

42 KFB/KFN-TM-BA_IA-e-1220

Value outside the A/D changer

9 Service, maintenance, disposal

9.1 Clean

• Before cleaning, disconnect the appliance from the operating voltage.

• Do not use aggressive detergents (solvents or similar).

9.2 Service, maintenance

The appliance may only be opened by trained service technicians who are authorized by KERN. Before opening, disconnect from power supply.

9.3 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.

9.4 Error messages

Error

message

Description Possible causes

- - - - -

Maximum load exceeded

- - ol - -

Err 1

Err 2

Err 4 Zeroing range exceeded due

Err 5 Keyboard error

Err 6

Incorrect data input

Incorrect time entry

to switching-on balance or

pressing (normally 4% max)

range

• Unload weighing system or reduce preload.

• Follow format “yy:mm:dd“

• Follow format “hh:mm:ss“

• Object on the weighing plate

• Overload when zeroing

• Weighing plate not installed

• Damaged weighing cell

Err 9 Stability display does not

appear

KFB/KFN-TM-BA_IA-e-1220 43

• Damaged electronics

• Check the environmental

conditions.

Err 10 Communication error

Err 15 Gravitation error

Err 17 Taring range exceeded

Fai l h /

Fai l l

Err P

Ba lo /

Lo ba

Should other error messages occur, switch balance off and then on again. If the error message remains inform manufacturer.

Adjustment error

Printer error

Battery very low

• No data

• Range 0.9 ~ 1.0

• Reduce load

• Repeat adjustment.

• Check communication parameters

• Recharge battery

44 KFB/KFN-TM-BA_IA-e-1220

Pin 5 signal earth

10 Da t a out put RS 2 32C

You can print weighing data automatically via the RS 232C interface or manually by

pressing 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. For a detailed description of interface parameters see chap. 8, menu block „P1 COM“ or ‚“P2 COM“

10.1 Technic al da ta

Connection 9 pin d-subminiature bushing

Pin 2 input

Pin 3 output

Baud rate 600/1200/2400/4800/9600 may be selected

Parity 8 bits, no parity / 7 bits, even parity / 7 bits, odd parity

KFB/KFN-TM-BA_IA-e-1220 45

Stable value

Instable value

Gross weight

Net weight

<lf>

Space line

<lf>

Space line

ST, GS 1.000kg

****************************

10.2 Printer mode

Printout examples (KERN YKB-01N):

• Weighing

• Counting

10.3 Output log

Weighing mode

10.4 Remote control instructions

PCS 100 ****************************

HEADER1: ST=STABLE， US=UNSTABLE

HEADER2: NT=NET， GS=GROSS

Command Significance

T <CR><LF> Taring

Z <CR><LF> Zeroing

W <CR><LF> Send all weighing details

S <CR><LF> Send stable weight value

P <CR><LF> Piece counting

46 KFB/KFN-TM-BA_IA-e-1220

The displayed weight does not glow.

• Mains power supply interrupted (mains cable defective).

• Power supply interrupted.

• (Rechargeable) batteries are inserted incorrectly or

empty

• No (rechargeable) batteries inserted.

The displayed weight is

• Table/floor vibrations

• Weighing pan has contact with other objects.

possible)

The weighing result is obviously incorrect

• Adjustment is no longer correct.

• Great fluctuations in temperature.

possible)

11 Instant help

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

Help:

Fault Possible cause

• The display unit is not switched on.

permanently changing

Should other error messages occur, switch display unit off and then on again. If the error message remains inform manufacturer.

• Draught/air movement

• Electromagnetic fields / static charging (choose

different location/switch off interfering device if

• The display of the balance is not at zero

• Warm-up time was ignored.

• Electromagnetic fields / static charging (choose

different location/switch off interfering device if

KFB/KFN-TM-BA_IA-e-1220 47

12 Installing displa y unit / weighi ng bridge

• Installation / configuration of a weighing system must be carried out

12.1 Technic al da ta

Supply voltage: 5 V/150mA

Max. signal voltage 0-10 mV

Zeroing range 0-2 mV

Sensitivity 2-3 mV/V

Resistance parameter 80 - 100 Ω, max 4 items per 350 Ω load cell

by a well acquainted specialist with the workings of weighing balances.

12.2 Weighing system design

The display unit is suitable for connection to any analogue platform in compliance with the required specifications. The following data must be established before selecting a weighing cell:

• Weighing balance capacity

This usually corresponds to the heaviest load to be weighed.

• Preload

This corresponds to the total weight of all parts that are to be placed on the weighing cell such as upper part of platform, weighing pan etc.

• Total zero setting range

This is composed of the start-up zero setting range (± 2%) and the zero setting range available to the user via the ZERO-key (2%). The total zero setting range equals therefore 4 % of the scale’s capacity.

The addition of weighing scales capacity, preload and the total zero setting range give the required capacity for the weighing cell. To avoid overloading of the weighing cell, include an additional safety margin.

• Smallest desired display division

• Verifiability, if required

The application of the display unit as a verified weighing system requires that you short-circuit the two contacts [K1] of the circuit board, using a jumper; for position see chap. 6.11. Remove the jumper for weighing systems not able to be verified.

48 KFB/KFN-TM-BA_IA-e-1220

12.3 How to connect the platform

 Disconnect the display unit from the power supply.  Solder the individual leads of the load cell cable onto the circuit board. See

diagram below.

 Please see diagram below for plug allocation.

 Use the connecting cable to connect the platform to the display unit, see chap. 2,

item [7]. Tighten the coupling ring.

KFB/KFN-TM-BA_IA-e-1220 49

12.4 Configure displ ay unit

12.4.1 Verified weighing systems (contacts of circuit board [K1] short-circuited by means of jumper)

For menu overview see chap. 8.2. In verified weighing systems the menu item for calibration „P2 mode“ is blocked.

KERN KFB-TM:

To disable the access lock, destroy the seal and actuate the adjustment switch. Position of the adjustment switch see chap. 6.11

KERN KFN-TM:

To override the blocked access you will have to destroy the seal before calling up the menu and to short-circuit the two contacts on the circuit board [K2], using a jumper (See chap. 6.11).

Call up menu:

 Switch-on balance and during the selftest press .

 Press , , subsequently, the first menu block

„PO CHK“ will be displayed.

 Press repeatedly until „P2 mode“ will be displayed.  Operate the adjustment switch (models KFB-TM).

 Press and use to select the weighing scales type.

Single-range balance

Dual range balance

Multi-interval balance



50 KFB/KFN-TM-BA_IA-e-1220

Example single range scales (d = 10 g, max. 30 kg)

 Confirm selected weighing scales type by pressing ; the

first menu item „COUNT“ will be shown.

1. Display internal resolution

 Press , the internal resolution will be shown.

 Return to menu by .

 Press to select the next menu item.

2. Position decimal point

 Press , the currently set position of the decimal dot is

displayed.

 Press to select the desired setting.

Options 0, 0.0, 0.00, 0.000, 0.0000.

Confirm input by .

 Press to select the next menu item.

3. Readability

 Press and current setting will be displayed.

Select desired setting by . Options 1, 2, 5, 10, 20, 50.

Confirm entry by .

 Press to select the next menu item.

KFB/KFN-TM-BA_IA-e-1220 51

6.10.1 for linearisation

4. Capacity

 Press , the current setting will be displayed.

Using the navigation buttons (see chap. 2.1.1) select the desired setting, the active digit is flashing.

Confirm input by .

 Press to select the next menu item.

5. Adjustment / linearization Adjustment or linearization is required after entering configuration data. For carrying out adjustment see chap. 6.9.1/step 6 or chap.

52 KFB/KFN-TM-BA_IA-e-1220

Example dual range scales (d = 2 / 5 g, max. 6 / 15 kg)

 Confirm selected weighing scales type by ; the first

menu item „COUNT“ will be shown.

1. Display internal resolution

 Press , the internal resolution will be shown.

 Return to menu by .

 Press to select the next menu item.

2. Position decimal point

 Press , the currently set position of the decimal dot is

displayed.

 Use to select the desired setting.

Options 0, 0.0, 0.00, 0.000, 0.0000.

Confirm input by .

 Press to select the next menu item.

KFB/KFN-TM-BA_IA-e-1220 53

3. Readability

 Press , the display used to enter readability/verification

value for first weighing range will appear.

 Press , the current setting will be displayed.

 Select desired setting with and acknowledge by .

 Press to enter the next menu item for

readability/verification value for second weighing range.

 Press and current setting will be displayed.

 Select desired setting with and acknowledge by .

 Press , the unit will return to the menu

 Press to select the next menu item.

54 KFB/KFN-TM-BA_IA-e-1220

6.10.1 for linearisation

4. Capacity

 Press and the display for entering the capacity for the

first weighing range will appear.

 Press and current setting will be displayed.

 Select desired setting with and acknowledge by .

 Press to select the next menu item used to enter the

capacity for the second weighing range.

 Press and current setting will be displayed.

 Select desired setting with and acknowledge by .

 Press , the unit will return to the menu

 Use toselect next menu item.

5. Adjustment / linearization Adjustment or linearization is required after entering configuration data. For carrying out adjustment see chap. 6.9.1/step 6 or chap.

 Acknowledge using , the current setting is displayed.

 Acknowledge by , select desired setting with

= Adjustment

= Linearisation



KFB/KFN-TM-BA_IA-e-1220 55

 Press repeatedly to exit menu.

12.4.2 Non verifiable weighing systems (contacts of circuit board [K1] not short-circuited )

+ For menu overview see chap. 8.1.

Call up menu

 Switch-on balance and during the selftest press .

 Press , , subsequently , the first menu block

„PO CHK“ will be displayed.

 Press repeatedly until „CAL“ will be displayed.

 Press , the first menu item „COUNT“ will be displayed.

Navigation in the menu

 With help of , the individual menu items can be

selected one after the other.

 Confirm selected menu item by pressing . The current

setting will be displayed.

 To change to the available settings, press the navigations

keys as described in chap. 2.1.1.

 Either save by pressing or cancel by pressing .

56 KFB/KFN-TM-BA_IA-e-1220

Parameter selection

1. Display internal resolution

 Press , the internal resolution will be shown.

 Return to menu by .

 Use to select another menu item.

2. Position decimal point

 Press , the currently set position of the decimal dot is

displayed.

To make changes using the navigation keys (See chap.

2.1.1), select the desired setting. Options 0, 0.0, 0.00,

0.000, 0.0000.

Confirm input by .

 Use to select another menu item.

3. Weighing scales type, capacity and readability

 Press and current setting will be displayed.

 Select desired setting by .

„off“ Single-range balance „on“ Dual range balance

 Press to confirm, the display for entering readability (for

dual range scales for the first weighing range) appears.

 Press , the current setting will be displayed.

KFB/KFN-TM-BA_IA-e-1220 57

the current setting will be shown (such as max. =

 Select desired setting with and acknowledge by .

 Press , the display for entering capacity will appear (at

dual range balance for the first range).

 Press ,

2000kg).

 Using the navigation buttons (see chap. 2.1.1) select the

desired setting, the active digit is flashing.

 Acknowledge with .

In a single-range balance the entry of capacity / readability

is finished.

either in single-range balance

 Press , the unit will return to the menu Press to call

up next menu item „CAL“.

In a dual range balance enter readability/verification value

and capacity of the second weighing range.

 Press , the display for entering the capacity of the

second weighing range will appear.

 Press , the current setting will be displayed.

 Using the navigation buttons (see chap. 2.1.1) select the

desired setting, the active digit is flashing.

 Confirm input by .

58 KFB/KFN-TM-BA_IA-e-1220

6.10.2 for linearisation



 Press , the display for entering the readability of the

second weighing range will appear.

 Press , the current setting will be displayed.

 Select desired setting with and acknowledge by .

 Press , the unit will return to the menu

 Press to call next menu item.

4. Adjustment or linearisation Adjustment or linearisation is required after entering configuration data. For carrying out adjustment see chap. 6.9.2/step 4 or chap.

 Acknowledge using , the current setting is displayed.

 Press to confirm, press to select the desired

setting noLin = Adjustment LineAr = Linearisation

KFB/KFN-TM-BA_IA-e-1220 59

KERN & Sohn GmbH

D-72322 Balingen-Frommern

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

Konformitätserklärung

Wir erklären hiermit, dass das Produkt, auf das sich diese Erklärung bezieht, mit den nachstehenden Normen übereinstimmt.

Declaration of conformity

We hereby declare that the product to which this declaration refers conforms to the following standards.

Prohlášení o shode

Tímto prohlašujeme, že výrobek, kterého se toto prohlášení týká, je 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 responsabilité que le produit, auquel se rapporte la présente déclaration, est conforme aux normes citées ci-après.

Dichiarazione di conformità

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.

EU Directive

Standards

2004/108/EC

EN55022: 2006 A1:2007

EN55024: 1998+A1:2001+A2:2003

2006/95/EC

EN 60950-1:2006 EN 60065:2002+A1:2006

2005/32/EC

Date: 13.10.2011

Signature:

KERN & Sohn GmbH

Management

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

13 De c laration of Conformity / Type Approval Certificate /

Test Certificate

Postbox 4052 E-Mail: info@kern-sohn.de

Fax: 0049-[0]7433-9933-149 Internet: www.kern-sohn.de

Declaration of confor m ity

EC Declaration of Conformity 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

Electronic Balance: KERN KFB-TM, KFN-TM, BFB, BFN, IFB, NFB, SFB, UFA, UFB, UFN

EN61000-3-3:1995+A1:2001+A2:2005

60 KFB/KFN-TM-BA_IA-e-1220

VAT No. DK 12275110

EC Type-Approval Certificate

No. DK 0199.202 Revision 1

KFN-TM / KFB-TM / BFB / IFB / SFB / UFB / UFN / NFB / BFN / NFN

NON-AUTOMATIC WEIGHING INSTRUMENT

Issued by DELTA Danish Electronics, Light & Acoustics

EU - Notified Body No. 0199 In accordance with the requirements for the non-automatic weighing instrument of

EC Council Directive 2009/23/EC. Issued to Kern & Sohn GmbH

Ziegelei 1 D 72336 Balingen-Frommern GERMANY

In respect of Non-automatic weighing instrument designated KFN-TM / KFB-TM / BFB /

IFB / SFB / UFB / UFN / NFB / BFN / NFN with variants of modules of load

receptors, load cells and peripheral equipment. Accuracy class III and IIII Maximum capacity, Max: From 1 kg up to 199 950 kg Verification scale interval: e = Max / n Maximum number of verification scale intervals: n = 6000 for single-interval

and n = 2×3000 for multi-range and multi-interval (however, dependent on

environment and the composition of the modules). Variants of modules and conditions for the composition of the modules are set

out in the annex. The conformity with the essential requirements in annex 1 of the Directive is met by the ap-

plication of the European Standard EN 45501:1992/AC:1993 and WELMEC 2.1:2001.

Note: This certificate is a revised edition which replaces previous revisions.

The principal characteristics and approval conditions are set out in the descriptive annex to this certificate.

The annex comprises 14 pages.

DELTA

Danish Electronics, Light & Acoustics

Venlighedsvej 4 2970 Hørsholm Denmark

Tel. (+45) 72 19 40 00 Fax (+45) 72 19 40 01 www.delta.dk

Issued on 2011-12-19 Valid until 2019-12-07 Signatory: J. Hovgård

Annex page 1 of 14 Certificate of EU type-approval no. DK 0199.202 rev.1

Descriptive annex

Contents Page

1. Name and type of instrument and modules 2

2. Description of the construction and function 2

2.1 Construction 2

2.2 Functions 3

3. Technical data 4

3.1 Indicator 4

3.2 Load receptors, load cells and load receptor supports 5

3.3 Composition of modules 6

3.4 Documents 6

4. Interfaces and peripheral equipment 6

4.1 Interfaces 6

4.2 Peripheral equipment 6

5. Approval conditions 6

5.1 Measurement functions other than non-automatic functions 6

5.2 Counting operation is not approved for NAWI 6

5.3 Totalised weight is not a legal value. 6

5.4 Compatibility of modules 7

6. Special conditions for verification 7

6.1 Composition of modules 7

7. Securing and location of seals and verification marks 7

7.1 Securing and sealing 7

7.2 Verification marks 7

8. Location of CE mark of conformity and inscriptions 8

8.1 Indicator 8

9. Pictures 9

10. Composition of modules - illustrated 14

Issued by DELTA

Annex page 2 of 14 Certificate of EU type-approval no. DK 0199.202 rev.1

1. Name and type of instrument and modules

The weighing instrument is designated KFN-TM / KFB-TM / BFB / IFB / SFB / UFB / UFN / NFB / BFN / NFN. It is a system of modules consisting of an electronic indicator, connected to a separate load receptor and peripheral equipment such as printers or other devices, as appropriate. The instrument is a Class III or IIII, self-indicating weighing instrument with single-interval, multi-range or multi-interval, an external AC mains adapter, and an internal rechargeable battery (optional).

The indicators consist of analogue to digital conversion circuitry, microprocessor control circuitry, power supply, keyboard, non-volatile memory for storage of calibration and setup data, and a weight display contained within a single enclosure.

The modules appear from the sections 3.1, 3.2.1 and 3.2.2; the principle of the composition of the modules is set out in the sections 6.1 and 10.

2. Description of the construction and function

2.1 Construction

2.1.1 Indicator

The indicator is specified in section 3.1.

Enclosures and keyboard

The indicators are housed in an enclosure made of either ABS plastic (model KFB-TM / BFB / IFB / UFB / NFB) or stainless steel (Model KFN-TM / SFB / UFN / BFN / NFN).

The front panels of the indicator comprise:

• An LCD display with appropriate state indicators and 5½ digits.

• A keyboard containing 6 keys used to enter commands or data into the weight indicator, plus a key

for turning the indicator on/off. Each key is identified with a name and/or pictograph.

Electronics

The instruments use a single printed circuit board, which contains all of the instrument circuitry. The metrological circuitry for the models of weight indicator is identical.

All instrument calibration and metrological setup data are contained in non-volatile memory. The power supply accepts an input voltage of 9 - 12 VDC from the external power adapter, with input

from 230 VAC 50 Hz. The indicator produces a load cell excitation voltage of 5 VDC.

2.1.2 Load receptors, load cells and load receptor supports

Set out in section 3.2.

2.1.3 Interfaces and peripheral equipment

Set out in section 4.

Issued by DELTA

Annex page 3 of 14 Certificate of EU type-approval no. DK 0199.202 rev.1

2.2 Functions

The weight indicating instruments are microcontroller based electronic weight indicators that require the external connection of strain gauge load cell(s). The weight information appears in the digital display located on the front panel and may be transmitted to peripheral equipment for recording, processing or display.

The primary functions provided are detailed below.

2.2.1 Display range

The weight indicators will display weight from –Max to Max (gross weight) within the limits of the display capacity.

2.2.2 Zero-setting

Pressing the “ZERO” key causes a new zero reference to be established and ZERO annunciator to turn on indicating the display is at the centre of zero.

Semi-automatic zero-setting range: ±2% of Max. Automatic zero-tracking range: ±2% of Max. Initial zero-setting range: ±10% of Max.

Zero-setting is only possible when the load receptor is not in motion.

2.2.3 Zero-tracking

The indicators are equipped with a zero-tracking feature which operates over a range of 4% of Max and only when the indicator is at gross zero and there is no motion in the weight display.

2.2.4 Tare

The instrument models are provided with a semi-automatic subtractive tare feature activated using the “TARE” key.

When the tare func tio n is a ctiv e , the “G/N” key will toggle the display between showing Net and Gross value.

2.2.5 Printing

A printer may be connected to the optional serial data port. The weight indicator will transmit the current to the printer when the “PRINT” key is pressed.

The printing will not take place if the load receptor is not stable, if the gross weight is less than zero, or if the weight exceeds Max.

2.2.6 Weighing unstable samples

The indicator has a function for weighing unstable samples. It is turned on/off by pressing the “ZERO” and “TARE” keys simultaneously.

2.2.7 Display test

A self-test routine is initiated by pressing the on/off key to turn the instrument off, then pressing it again to turn the instrument on. The test routine turns on and off all of the display segments and light indicators to verify that the display is fully functional.

Issued by DELTA

Annex page 4 of 14 Certificate of EU type-approval no. DK 0199.202 rev.1

2.2.8 Real time clock

If it is available in the instrument, the real time clock can be activated to get printout with day and time information.

2.2.9 Operator information messages

The weight indicator has a number of general and diagnostic messages which are described in detail in the user’s guide.

2.2.10 Software version

The software revision level is displayed during the power-up sequence of the instrument. The approved software version is 1.07 and 1.08.

The software version 1.08 includes possibility of multi-range.

2.2.11 Totalisation

The indicator can be configured with a totalisation function, adding actual weight display values to the memory when pressing “M+” key if the equilibrium is stable.

Pressing “MR” key displays the total accumulated weight. Pressing “M+” and “MR” key will clear the totalised value.

2.2.12 Battery operation

The indicator can be operated from an internal rechargeable battery, if this option is installed.

3. Technical data

The KFN-TM / KFB-TM / BFB / IFB / SFB / UFB / UFN / NFB / BFN / NFN weighing instruments are composed of separate modules, which are set out as follows:

3.1 Indicator

The indicators have the following characteristics: Type: KFN-TM / KFB-TM / BFB / IFB / SFB / UFB / UFN / NFB

/ BFN / NFN Accuracy class: III and IIII Weighing range: Single-interval, multi-range (2 ranges) or multi-interval (2

partial intervals) Maximum number of Verification Scale Intervals: ≤ 6000 (class III), ≤ 1000 (class IIII) for single-interval

≤ 3000 (class III), ≤ 1000 (class IIII) for multi-range and

multi-interval Maximum tare effect: -Max within display limits Fractional fa ctor: p'i = 0.5 Minimum input voltage per VSI: 1 µV Excitation voltage: 5 VDC Circuit for remote sense: present on the model with 7-terminal connector Minimum input impedance: 87 ohm Maximum input impedance: 1600 ohm Mains power supply: 9 - 12 VDC / 230 VAC, 50 Hz using external adapter Operational temperature: -10 °C to +40 °C

Issued by DELTA

Annex page 5 of 14 Certificate of EU type-approval no. DK 0199.202 rev.1

Peripheral interface: Set out in section 4

3.1.1 Connecting cable between the indicator and load cell / junction box for load cell(s)

3.1.1.1 4-wire system

Cable between indicator and load cell(s): 4 wires (no sense), shielded Maximum length: the certified length of the load cell cable, which

shall be connected directly to the indicator.

3.1.1.2 6-wire system

Only to be used for indicator model with a 7-terminal connector for load cell. Cable between indicator and junction box: 6 wires, shielded

Maximum length: 227 m / mm²

3.2 Load receptors, load cells and load receptor supports

Removable platforms shall be equipped with level indicators.

3.2.1 General acceptance of modules

Any load cell(s) may be used for instruments under this certificate of type approval provided the following conditions are met:

1) A test certificate (EN 45501) or OIML Certificate of Conformity (R60) respectively issued

for the load cell by a Notified Body responsible for type examination under the Directive 2009/23/EC.

2) The certifica te cont ains t he load cel l ty pes and the necessary load cell data requ ir e d for the

manufacturer’s declaration of compatibility of modules (WELMEC 2, Issue 5, 2009), and any particular installation requirements). A load cell marked NH is allowed only if humidity testing to EN 45501 has been conducted on this load cell.

3) The compatibility of load cells and indicator is established by the manufacturer by means of

the compatibility of modules form, contained in the above WELMEC 2 document, or the like, at the time of EC verification or declaration of EC conformity of type.

4) The load transmission must conform to one of the examples shown in the WELMEC 2.4

Guide for load cells.

3.2.2 Platforms, weigh bridge platforms

Construction in brief All-steel or steel-reinforced concrete construction, surface or pit

mounted Reduction ratio 1 Junction box Mounted in or on the platform Load cells Load cell according to section 3.2.1 Drawings Various

3.2.3 Bin, tank, hopper and non-standard systems

Construction in brief Load cell assemblies each consisting of a load cell stand assembly to

support one of the mounting feet bin, tank or hopper Reduction ratio 1 Junction box Mounted on dead structure Load cell Load cell according to section 3.2.1

Issued by DELTA

Annex page 6 of 14 Certificate of EU type-approval no. DK 0199.202 rev.1

Drawings Various

3.3 Composition of modules

In case of composition of modules, EN 45501 paragraph 3.5 and 4.12 shall be satisfied.

3.4 Documents

The documents filed at DELTA (reference No. A530648) are valid for the weighing instruments described here.

4. Interfaces and peripheral equipment

4.1 Interfaces

The interfaces are characterised “Protective interfaces” according to paragraph 8.4 in the Directive.

4.1.1 Load cell input

A 5-terminal connector or 7-terminal connector for the load cell is positioned on the back of the enclosure.

4.1.2 Other interfaces

The indicator may be equipped with one or more of the following protective interfaces located on the main board or on separate interface boards.

• RS-232C

• Analogue output (0 - 10V / 4 - 20 mA)

• Digital output

• Blue tooth

The interfaces do not have to be secured.

4.2 Peripheral equipment

Connection between the indicator and peripheral equipment is allowed by screened cable. The instrument may be connected to any simple peripheral device with a CE mark of conformity.

5. Approval conditions

5.1 Measur ement functions other than non-automatic functi o ns

Measurement functions tha t will enable the use of the instr ument as an automatic weighing instrument are not covered by this type approval.

5.2 Counting operation is no t appro ved for NAWI

The count shown as result of the counting function is not covered by this NAWI approval.

5.3 Totalis ed weight is not a legal value.

When using the totalisation function creating a sum of several weighing results, this sum is only informative, as it is not a legal value.

Issued by DELTA

Annex page 7 of 14 Certificate of EU type-approval no. DK 0199.202 rev.1

5.4 Compatib ility of modules

In case of composition of modules, WELMEC 2 (Issue 5) 2009, paragraph 11 shall be satisfied.

6. Special conditions for verification

6.1 Composition of modules

The environmental conditions should be taken into consideration by the composition of modules for a complete weighing instrument, for example instruments with load receptors placed outdoors and having no special protection against the weather.

The composition of modules shall agree with section 5.4. An example of a declaration of conformity document is shown in section 10.

7. Securing and location of seals and verification marks

7.1 Securing and sealing

Seals shall bear the verification mark of a notified body or alternative mark of the manufacturer according to ANNEX II, section 2.3 of the Directive 2009/23/EC.

7.1.1 Indicator

Access to the configuration and calibration facility requires that a calibration jumper is installed on the main board.

Sealing of the cover of the enclosure - to prevent access to the calibration jumper and to secure the electronics against dismantling/adjustment - is accomplished with a brittle plastic sticker. The sticker is placed so access to one of the screws of the enclosure is prohib ite d (se e fig u re 3, 4 & 5).

7.1.2 Indicator - load cell connector - load receptor

Securing of the indicator, load receptor and load cell combined is done in one of the following ways:

• Sealing of the load cell connector with the indicator by a lead wire seal

• Inserting the serial number of the load receptor as part of the principal inscriptions contained on the

indicator identi fi c a tion label

• The load receptor bears the serial number of the indicator on its data plate.

7.1.3 Peripheral interfaces

All peripheral interfaces are “protective”; they neither allow manipulation with weighing data or legal setup, nor change of the performance of the weighing instrument in any way that would alter the legality of the weighing.

7.2 Verific ation marks

7.2.1 Indicator

A green M-sticker shall be placed next to the CE mark on the inscription plate. The sticker with verification marks may be placed on or next to the inscription plate or on the front of

the indicator.

Issued by DELTA

Annex page 8 of 14 Certificate of EU type-approval no. DK 0199.202 rev.1

7.2.2 Printers used for legal transactions

Printers covered by this type approval and other printers according to section 4.2, w hich have been subject to the conformity assessm ent proce dur e, shall not bear a separate green M-sticker in order to be used for legal transactions.

8. Location of CE mark of conformity and inscriptions

8.1 Indicator

8.1.1 CE mark

A sticker with the CE mark of conformity and year of production is located on the identification plate which is located on the enclosure of the weight indicator.

8.1.2 Inscriptions

Manufacturer’s tradem ark and/or name and the type designation is located on the front panel overlay. On the front panel of the weight indicator:

• Manufacturer’s name and/or logo

Indelibly printed on a brittle plastic sticker located on the front panel overlay:

• Max, Min, e =, accuracy class

On the inscription plate:

• Model no., serial no., type-approval certificate no., accuracy class, temperature range, electrical

data and other inscriptions.

8.1.2.1 Load receptors

On a data plate:

• Manufacturer's name, type, serial number, capacity

Left to the manufacturer’s choice as provided in section 7.1.2:

• Serial no. of the indicator

Issued by DELTA

Annex page 9 of 14 Certificate of EU type-approval no. DK 0199.202 rev.1

9. Pictures

Figure 1a KFN-TM / SFB / UFN / BFN / NFN indicator without fro n t layout.

Figure 1b Front layout of KFN-TM indicator.

Issued by DELTA

Annex page 10 of 14 Certificate of EU type-approval no. DK 0199.202 rev.1

Figure 2a KFB-TM / BFB / IFB / UFB / NFB indicator without front layout.

Figure 2b Front layout of KFB-TM indicator.

Issued by DELTA

Annex page 11 of 14

After remove the label, you will find VOID on housing, or

Certificate of EU type-approval no. DK 0199.202 rev.1

a self destroyable sticker/seal shall be used.

Figure 3 Sealing of KFN-TM / SFB / UFN / BFN / NFN.

(method A)

Issued by DELTA

Annex page 12 of 14 Certificate of EU type-approval no. DK 0199.202 rev.1

Issued by DELTA

Figure 4 Sealing of KFN-TM / SFB / UFN / BFN / NFN.

(method B)

Annex page 13 of 14 Certificate of EU type-approval no. DK 0199.202 rev.1

Issued by DELTA

Figure 5 Sealing of KFB-TM / BFB / IFB / UFB / NFB.

Annex page 14 of 14 Certificate of EU type-approval no. DK 0199.202 rev.1

10. Composition of modules - illustrated

Issued by DELTA

TEST CERTIFICATE

No. DK0199-R76-11.04

Instrument type KFN-TM / KFB-TM

Test item device Non-automatic Weighing Indicator

Issued by DELTA Danish Electronics, Light & Acoustics

In accordance with Paragraph 8.1 of the European Standard on metrological aspects

Fractional factor (pi) 0.5 (refer to 3.5.4 of the standard).

Issued to Kern & Sohn GmbH

Manufacturer Kern & Sohn GmbH

In respect of A family of indicators tested as a module of a weighing instrument.

Characteristics Suitable as a non-automatic weighing instrument with the following

Description and The A/D device is described and documented in the annex to documentation this certificate.

Remarks Summary of tests involved: See test report no. DANAK-

This test certificate cannot be quoted in an EU type approval certificate without permission from the holder of the certificate mentioned above.

The annex comprises 7 pages.

Issued on 2011-03-16 Signatory: J. Hovgård

EU - Notified Body No. 0199

of non-automatic weighing instruments EN 45501:1992.

Ziegelei 1 D 72336 Balingen-Frommern GERMANY

characteristics:

Self indicating with single-interval, multi-interval or

multi-range Accuracy class III or IIII Verification scale interval: e

= Maxi/ni

Maximum number of verification scale intervals: n = 6000 for single-interval

n = 2×3000 for multi-interval and

multi-range,

however limited to 1000 for Class IIII Min. input voltage per VSI: 1 µV The essential characteristics are described in the annex.

1910568, DANAK-1910388 and NMi 709226.

DELTA

Danish Electronics,

Light & Acoustics

Venlighedsvej 4

2970 Hørsholm

Denmark

Tel. (+45) 72 19 40 00

Fax (+45) 72 19 40 01

www.delta.dk

VAT No. DK 12275110

Annex page 1 of 7 Annex to Test Certificate No. DK0199-R76-11.04

1. Name and type of instrument

The indicators KFN-TM / KFB-TM are a family of weighing indicators suitable to be incorporated in non-automatic weighing instruments, class III or class IIII, with single-interval, multi-interval or multi-range.

2. Description of the construction and function

2.1 Construction

The electronic indicator consists of a single circuit board, SMD populated on both sides as the A/Dinterface circuits, the microprocessor and the voltage regulation are placed on one side and the LCD display on the other side.

The LCD-display has indication for: Stable, zero, gross, net, tare, and weight unit (kg, g, t), and 5½ digits with a height of 52 mm.

The enclosure is made of stainless steel for the KFN-TM indicator or of ABS plastics for KFB-TM.

The front of the enclosure has an on/off key plus 6 keys for operating the functions of the indicator.

All instrument calibration and metrological setup data are stored in the non-volatile memory.

The indicators are power supplied with 9 - 12 VDC - normally supplied by external 230 VAC to 9 - 12 VDC adapter. An optional internal battery can be factory installed.

As part of the indicators EMC protection ferrites shall be placed as follows:

• Externally around the DC supply cable near its connection to the indicator (min. 1 turn).

• Internal on cable between power plug and main board (4 turns).

• Internal on cable between load cell connector and main board (min. 2 turns).

Software

The software version is displayed during the start-up of the indicator. The tested software version is 1.07.

Sealing

The configuration and calibration data can only be changed if the calibration jumper is installed on the circuit board.

2.2 Function

The devices are a microprocessor based electronic weighing indicators for connection of strain gauge load cells.

List of devices:

• Self test

• Determination and indication of stable equilibrium

• Initial zero-setting ± 10% of Max

• Semi-automatic zero-setting ± 2% of Max

• Automatic zero-tracking ± 2% of Max

Issued by DELTA

Annex page 2 of 7 Annex to Test Certificate No. DK0199-R76-11.04

•

Indication of zero

• Semi-automatic subtractive tare

• Acting upon significant fault

• Weighing unstable samples

• Real time clock (optional)

3. Technical data

3.1 Indicator

Type KFN-TM / KFB-TM

Accuracy class III or IIII

Weighing range Single-interval, multi-interval or multi-range

Maximum number of verification scale intervals (n) 6000 for single-interval

2×3000 for multi-interval and multi-range, however limited to 1000 for Class IIII

Minimum input voltage per VSI 1 µV

Maximum capacity of interval or range (Max

Verification scale interval, e

= Maxi / ni

Initial zero-setting range: ± 10 % of Max

Maximum tare effect: 100 % of Max

Fractional factor (pi) 0.5

Excitation voltage 5 VDC

Circuit for remote sense Active, (see below)

Minimum input impedance 87 ohm

Maximum input impedance 1600 ohm

Connecting cable to load cell(s): See Section 3.1.1

Supply voltage: 9 - 12 VDC

Operating temperature range Min / Max = -10 °C / +40 °C

Peripheral interface(s) See Section 4

): ni × ei

230 VAC using external Vac/2Vdc adapter

3.1.1 Connecting cable between the indicator and the junction box for load cell(s), if any

3.1.1.1 4-wire system

Line 4 wires, shielded Maximum length The certified length of the load cell cable, which shall be con-

nected directly to the indicator.

3.1.1.2 6-wire system

Line 6 wires, shielded

Maximum length 227 m/mm Maximum resistance per wire 3.8 ohm

Issued by DELTA

Annex page 3 of 7 Annex to Test Certificate No. DK0199-R76-11.04

4. Interfaces

4.1 Load cell interface

Refer to section 3.1.1.

Any load cell(s) can be used for instruments under this certificate provided the following conditions are met:

• There is a respective test certificate (EN 45501) or an OIML Certificate of Conformity (R60)

issued for the load cell by a Notified Body responsible for type examination under the Directive 2009/23/EC.

• The certificate contains the load cell types and the necessary load cell data required for the

manufacturer’s declaration of compatibility of modules (WELMEC 2, Issue 5, 2009, section

11), and any particular installation requirements. A load cell marked NH is allowed only if humidity testing to EN 45501 has been performed.

• The compatibility of load cells and indicator is established by the manufacturer by means of

the compatibility of modules form, contained in the above WELMEC 2 document, or the like, at the time of EC verification or declaration of EC conformity of type.

• The load transmission must conform to one of the examples shown in the WELMEC 2.4 Guide

for load cells.

4.2 Peripheral interfaces

The indicator may be equipped with one or more of the following protective interfaces that have not to be secured.

• RS-232C

• Analogue output (0 - 10 V / 4 - 20 mA)

• Digital output

• Blue Tooth

The peripheral interfaces are characterised “Protective interfaces” according to paragraph 8.4 in the Directive.

5. Conditions for use

Legal use of the indicator for automatic weighing or as counting device is not allowed with reference to this test certificate.

Issued by DELTA

Annex page 4 of 7 Annex to Test Certificate No. DK0199-R76-11.04

6. Location of seals and inscriptions

Seals shall bear the verification mark of a notified body or alternative mark of the manufacturer according to ANNEX II, section 2.3 of the Directive 2009/23/EC. The seals shall be placed so that the enclosure can not be opened.

Location of CE mark of conformity:

The CE mark of conformity is placed on the overlay on the rear side of the device.

Inscription on the overlay:

Type, accuracy class, Temp. -10 °C / +40 °C, Certificate No. DK0199-R76-11.04.

Other inscriptions on the overlay:

Manufacturer’s name and/or logo, Part No, Supply voltage.

7. Tests

The indicator has been tested according to EN 45501 and WELMEC 2.1 Guide for testing of indicators.

Examination / tests

Temperature tests: 20 / 40 / -10 / 5 / 20 (tested at minimum input-voltage sensitivity)

Temperature effect on no-load indication (tested at minimum input-voltage sensitivity)

Stability of equilibrium

Repeatability

Warm-up time

Voltage variations

Short time power reductions

Electrical bursts

Electrostatic discharges

Immunity to radiated electromagnetic fields

Damp heat, steady state

Span stability

Checklist

Maximum load cell cable length and impedance of cable to load cell

Load cell interface measurements with interruptions of the sense circuit

The test item fulfilled the maximum permissible errors at all tests.

Issued by DELTA

Annex page 5 of 7 Annex to Test Certificate No. DK0199-R76-11.04

8. Documentation

Contents of the technical documentation held by the notified body:

8.1 Product specification

• Manuals and descriptions

• Drawings

• Etc.

8.2 Examination report

OIML R76 report no. DANAK-1910568, DANAK-1910388 and NMi 709226.

8.3 Test results

Report no. DANAK-1910568, DANAK-1910388 and NMi 709226.

Issued by DELTA

Annex page 6 of 7 Annex to Test Certificate No. DK0199-R76-11.04

9. Pictures

Figure 1 Sealing of KFN-TM.

a self destroyable sticker/seal shall be used.

After remove the label, you will find VOID on housing, or

Issued by DELTA

Annex page 7 of 7 Annex to Test Certificate No. DK0199-R76-11.04

Issued by DELTA

Figure 2 Sealing of KFB-TM.

KERN & SOHN FA 6T-3M User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual