KERN & SOHN KFE-TM User Manual

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KERN & Sohn GmbH

Ziegelei 1 D-72336 Balingen E-Mail: info@kern-sohn.com

Phone: +49-[0]7433- 9933-0 Fax: +49-[0]7433-9933-149 Internet: www.kern-sohn.com

Operating and Installation Instructions Display Unit

KERN KFE-TM

Version 1.3

06/2013 GB

KFE-TM-BA_IA-e-1313

KERN KFE-TM

Version 1.3 06/2013

Operating and installation instructions Display unit

Contents

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

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

2.1 Keyboard overview .................................................................................................... 6

2.1.1 Numerical input via the navigation buttons ........................................................................ 7

2.2 Overview of display .................................................................................................... 7

3 Basic Information (General) ............................................................................. 8

3.1 Proper use ................................................................................................................. 8

3.2 Improper Use ............................................................................................................. 8

3.3 Warranty .................................................................................................................... 8

3.4 Monitoring of Test Resources .................................................................................... 9

4 Basic Safety Precautions .................................................................................. 9

4.1 Pay attention to the instructions in the Operation Manual .......................................... 9

4.2 Personnel training ...................................................................................................... 9

5 Transport and storage ...................................................................................... 9

5.1 Testing upon acceptance ........................................................................................... 9

5.2 Packaging / return transport ...................................................................................... 9

6 Unpacking and installation ............................................................................. 10

6.1 Installation Site, Location of Use ...............................................................................10

6.2 Unpacking and installation ........................................................................................10

6.3 Scope of delivery / serial accessories: ......................................................................10

6.4 Transit Securing .......................................................................................................11

6.5 Mains connection ......................................................................................................11

6.6 Storage battery operation (optional) ..........................................................................11

6.7 Adjustment................................................................................................................12

6.8 Linearization .............................................................................................................15

6.9 Verification ................................................................................................................16

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7 Operation ......................................................................................................... 18

7.1 Start-up .....................................................................................................................18

7.2 Switching Off ............................................................................................................18

7.3 Zeroing .....................................................................................................................18

7.4 Simple weighing ........................................................................................................18

7.5 Weighing with taring .................................................................................................19

7.6 Weighing with tolerance range .................................................................................19

7.7 Manual totalizing .......................................................................................................22

7.8 Automatic adding-up .................................................................................................24

7.9 Animal weighing ........................................................................................................25

8 Menu ................................................................................................................. 26

8.1 Navigation in the menu .............................................................................................26

8.2 Overview ...................................................................................................................26

9 Service, maintenance, disposal ..................................................................... 28

9.1 Cleaning ...................................................................................................................28

9.2 Service, maintenance ...............................................................................................28

9.3 Disposal ....................................................................................................................28

9.4 Error messages ........................................................................................................29

10 Instant help ................................................................................................... 30

11 Installing display unit / weighing bridge .................................................... 31

11.1 Technical data ..........................................................................................................31

11.2 Weighing system design ...........................................................................................31

11.3 How to connect the platform .....................................................................................32

11.4 Configure display unit ...............................................................................................33

12 Enclosure Declaration of conformity / Type approval / Test certificate . 36

KFE-TM-BA_IA-e-1313 3

1 Technical data

KERN

KFE-TM

Display

6-digit

Solution verifiable

6.000 e

Verification class

III

Weighing ranges

Divisions

1,2,5,…10, n

Display

LCD 22 mm digits with back lighting

DMS weighing cells

80-100 . Max. 4 items per 350 ;

Sensitivity 2-3 mV/V

Electric Supply

Input voltage 220 V – 240 V, 50 Hz

Mains adapter secundary voltage 12V, 500 mA

Rechargeable battery (optional)

6 x 1.5 V, 4 Ah

Service life – background illumination OFF 45 h

Loading time 12 h

Admissible ambient temperature

-10°C – 40°C

Net weight

1.9 kg

Protection type

IP 65 as per DIN EN 60529

Dimensions:

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2 Appliance overview

Front view:

1. Weight display

2. Keyboard

Rear view:

3. Wall bracket

4. Connection power supply (mains adapter)

5. Fastening screws

6. Connection platform

7. Position of seal / housing screw

KFE-TM-BA_IA-e-1313 5

2.1 Keyboard overview

Key

Function

Turn on/off

Zeroing

Navigation key

Confirm entry

Taring

Navigation key 

Scroll forward in menu At numeric input increase flashing digit

Add weighing value to summation memory Display sum total Delete total added memory

Change between gross  and net weight

Navigation key 

Digit selection to the right

Switch-over weighing unit

ESC

Back to menu/weighing mode

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2.1.1 Numerical input via the navigation buttons

Key

Function

Digit selection to the left

Delete

Digit selection to the right

Increase flashing digit

Terminate input

Display

Significance

Status indicatoren for weighing with tolerance range HI: Weighed goods over default tolerance OK: Weighed goods within default tolerance OK: Load below specified tolerance

ZERO

Indicator zero display

TARE

Indicator for saved tare value

NET

The displayed weighing value is a net weighing value

GROSS

The displayed weighing value is a gross weighing value

STABLE

Stability display

AUTO

Function for „Automatic totalizing“ is activated

ANIMAL

Animal weighing mode is activated

Charging status of rechargeable battery (optional)

2.2 Overview of display

KFE-TM-BA_IA-e-1313 7

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 plate. 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

 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.

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 Manual

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

KFE-TM-BA_IA-e-1313 9

6 Unpacking and installation

For display unit, see chapter 2 Mains adapter Operating instructions

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 and installation

Take the display unit carefully out of its packaging, remove the plastic jacket and install it at the designated work space. Mount the display unit in a way that facilitates operation and where it is easy to see.

6.3 Scope of delivery / serial accessories:

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6.4 Transit Securing

Voltage has dropped below prescribed minimum.

Battery very low.

Battery is completely discharged

Please note, if the display unit is used together with platform with transportation lock, this transportation lock must be released prior to use. See operating instructions attached to the respective platform.

6.5 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.

6.6 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. The appearance of the rechargeable battery symbol in the weight display indicates that the 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 rechargeable battery symbol shows the charge status of the rechargeable battery:

KFE-TM-BA_IA-e-1313 11

6.7 Adjustment

The adjustment is locked for verified balances.

In order to unlock the access, the seal must be destroyed and the jumper on the printed circuit board must be fitted (see chap. 6.9).

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.

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.kernsohn.com.

Observe stable environmental conditions. Stabilisation requires a

certain warm-up time.

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.

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Call-up menu

 In weighing mode press and at the same time and

the first menu block will appear.

 Press repeatedly until is displayed.

 Press , password query will appear.

 Press , , subsequently until the first menu item

is shown.

 Press repeatedly until is displayed.

 Confirm by .

 Press repeatedly until the currently balance typ will be

displayed.

= Singel range

= Dual range

= Multi interval



 Confirm by .

 Press repeatedly until

will be displayed.

 Confirm by and select by .

= Justierung

= Linearisierung



KFE-TM-BA_IA-e-1313 13

Procedure

 Confirm menu setting 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.

 Either use the displayed adjustment weight or change it with

, and (numerical input see chapter 2.1.1), the

active digit is flashing.

 Confirm by , „LoAd“ will be shown.

 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.

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6.8 Linearization

Carrying out linearization is restricted to specialist staff possessing well

acquainted with the workings of weighing scales.

The linearisation is locked for verified weighing systems.

In order to unlock the access, the seal must be destroyed and the jumper on the printed circuit board must be fitted (see chap. 6.9).

The test weights to be used must be adapted to the weighing scale’s

specifications; see chapter 3.4 “testing instruments control”.

Observe stable environmental conditions. Stabilisation requires a

certain warm-up time.

After successful linearization you will have to carry out calibration; see

chapter “testing instruments control”

Procedure:

 Call-up menu setting , see chap. 6.7.

 Acknowledge with .

Ensure that there are no objects on the weighing plate.



 Wait for stability display „STABLE“, then press . When

“LoAd 1“ is displayed, put the first adjustment weight (1/3

max) carefully in the centre of the weighing platform.

 Wait for stability display „STABLE“, then press . When

“LoAd 2“ is displayed, put the second adjustment weight

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

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.

KFE-TM-BA_IA-e-1313 15

 Wait for stability display „STABLE“, then press . When

“LoAd 3“ is displayed, put the third adjustment weight (1/3

max) carefully in the centre of the weighing platform.

 Wait for stability display „STABLE“, then press .

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

Remove adjusting weight during selftest, the appliance will return into weighing mode automatically.

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

Verification of the balance is invalid without the seal.

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

6.9 Verification

General introduction:

According to EU directive 90/384/EEC or 2009/23EG balances must be officially verified if they are used as follows (legally controlled area):

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

medical and pharmaceutical laboratory.

c) For official purposes d) For manufacturing final packages

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

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

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Position of seals and jumper

 Remove seal  Open display unit

 For adjustment / access

to the configuration

menu the jumper „CAL“

must be fitted.

Access to conductor plate:

KFE-TM-BA_IA-e-1313 17

7 Operation

Overload warning

Overloading exceeding the stated maximum load (max) of the device, minus a possibly existing tare load, must be strictly avoided. This could damage the instrument.

Exceeding maximum load is indicated by the display of “ol“, and an audio

sound. Unload weighing system or reduce preload.

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.

 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.

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7.5 Weighing with taring

Selectable mode

Description

bp 1

Acoustic signal switched off, only optical signal active [LO], [OK] or [HI]

bp 2

If load is within tolerance range, [ok] will be displayed and audio signal will be sounded.

bp 3

If the load is beyond the tolerance range [ok] will be shown and the audio signal will sound.

 Deposit weighing vessel. After successful stop check 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.  After removing the weighing container, the weight of the weighing container

appears as negative display.

 The taring process can be repeated any number of times, e.g. when adding

several components for a mixture (adding). The limit is reached when the whole weighing range is exhausted.

 To change between gross weight and net weight, press .  To delete the tare value, remove load from weighing plate and press .

7.6 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 controls such as dispensing, portioning or sorting the unit will indicate whether a value exceeds or falls short of limits with an optical [LO, OK, HI]

as well as an audio signal according to the setting in the menu block “F4

oFF_BEEP“; see chapter 8.2.

KFE-TM-BA_IA-e-1313 19

1. Call up menu

 In weighing mode press and at the same time and

the first menu block will appear.



2. Set limit values

 Keep on pressing until the display used for entering the

lower limit SET LO appears.

 Press and current setting will be displayed.

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

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

 Confirm input by .

 Select SET HI by pressing .

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

displayed.

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

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

 Confirm input by .

 Press and the unit will return to the menu

20 KFE-TM-BA_IA-e-1313

3. How to set tolerance weighing mode

 Press repeatedly until is displayed.

 Acknowledge with .

 Press repeatedly until BEEP is displayed.

 Press and current setting will be displayed.

 Select desired setting (bp 1, bp 2, bp 3) with and

confirm by pressing .

 Press repeatedly to exit menu. The weighing system is

in tolerance weighing mode, i.e. from here occurs the graduation if the weighed material is within the two tolerance limits.

4. Weighing with tolerance range

 Tare when using a weighing container  Put on goods to be weighed, tolerance control is started

Load below specified tolerance

Load within specified tolerance

Load exceeds specified tolerance

The indicator [LO] is displayed

The indicator [OK] is displayed

The indicator [HI] is displayed

The tolerance control is not active when the weight is under 20d. To delete limits, enter “00.000 kg“.

KFE-TM-BA_IA-e-1313 21

7.7 Manual totalizing

Menu settings:

„F5 Prt“  „P prt“, see chap. 8.2 “P4 CHk“  „mode 1“, see chap. 11.4

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

Add up:

 Place weighing goods A.

Wait until the stability display STABLE appears, then press . The weighing value is saved.

 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 . The weighing value is added into the summation memory. 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.

 You can repeat this process 99 times until the capacity (max) of the weighing

system is exhausted.

Display of the saved weighing data:

 When zero is displayed press , the number of weighings followed by the total

weight will be displayed for 2 sec.

With this function the individual weighing values are totalized into the sum memory by pressing .

22 KFE-TM-BA_IA-e-1313

Delete weighing data:

 If you see a display of zero, press and the number of weighing, followed by

the total weight will be shown for 2 sec. Press during this display. The data in the summation memory are deleted.

KFE-TM-BA_IA-e-1313 23

7.8 Automatic adding-up

Menu settings:

„F5 Prt“  „P prt“, see chap. 8.2 “P4 CHk“  „mode 1“, see chap. 11.4

When function is activated, the indicator AUTO appears.

Add up:

 Place weighing goods A.

After the standstill control sounds a signal tone.

 Unload the weighing good, the weighing value is added into the summation

memory.

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. Unload the weighing good, the weighing value is added into the summation memory. 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.

 You can repeat this process 99 times until the capacity (max) of the weighing

system is exhausted.

After the audio sound was sounded you can remove the load or add to it. Display and delete weighing data see chap. 7.7.

This function is used to issue and add individual weighing values automatically to the summation memory on unloading of weighing scale without pressing .

24 KFE-TM-BA_IA-e-1313

7.9 Animal weighing

Menu setting:

 , see chap. 11.4

When function is activated, the indicator ANIMAL appears.

 Place goods to be weighed on balance.  When the load has somewhat calmed down, you will hear an audio sound. The

mean value achieved will be shown.

 Whilst averaging is taking place you can add or remove loads as the measuring

value will be constantly updated.

To disable the animal weighing function, return to weighing mode Select menu setting  , see chpt. 11.4.

The mean value function is suitable for weighing restless loads.

KFE-TM-BA_IA-e-1313 25

8 Menu

Call up menu

 In weighing mode press and at the same time

and the first menu block will appear.

Select menu block

 With help of , the individual menu blocks can be

selected one after the other.

Select setting

 Confirm selected menu item by pressing . The

current setting will be displayed.

Change settings

 To change to the available settings, press the

navigations keys as described in chpt. 2.1.1.

Acknowledge setting / exit the menu

 Either save by pressing or cancel by pressing .

Return to weighing mode

 Press repeatedly to exit menu.

Menu block

Menu item

Available settings / explanation

Weighing with tolerance range

SET Lo

Upper limit value, input see chapter 7.6 (factory setting 000.000)

SET Hi

Lower limit value, input see chapter 7.6 (factory setting 000.000)

to Clr

Not documented

to P-C

Not documented

to Prt

Not documented

Weighing Units

Factory setting „kg“, no further units available.

Date/time

SET dA

Set date Press and the currently set date (yy.mm.dd)

will be displayed. To make changes, press the navigation keys as explained in chpt. 2.1.1.

SET ti

Set time Press and the currently set time (hh.m.ss) will

be displayed. To make changes, press the navigation keys as explained in chpt. 2.1.1.

8.1 Navigation in the menu

8.2 Overview

26 KFE-TM-BA_IA-e-1313

Clock

Clk on

Display time switched on After 5 min without change of load the weight display passes to the time display.

Clk of*

Display of time OFF

bk on

Background lighting of display is switched on permanently

bk AU

Display background illumination off

bk off

Automatic background illumination on when weighing pate is loaded or key pressed.

bEEP see chpt

7.6

bp 1

Audio signal switched off during tolerance weighing

bp 2

If load is within tolerance, [ok] will be displayed and audio signal will be sounded

bp 3

If the load is beyond the tolerance range, [ok] will be shown and the audio signal will sound.

P Prt

Manual totalizing, see chap. 7.7

P Cont

Not documented

Series

Not documented

ASK

Not documented

P cnt 2

Not documented

P Stab

A Not documented

P Auto

For automatic totalizing see chpt. 7.8.

Confirm selection by , after that the following menu items are available.

b9600

Not documented

Pr X

Lab X

Ty-tp

Ty 711

Lp 50

St on

Following tare ON

St off

Following tare OFF

Access to configuration menu see chap. 11.4

KFE-TM-BA_IA-e-1313 27

9 Service, maintenance, disposal

Before any maintenance, cleaning and repair work disconnect the appliance from the operating voltage.

9.1 Cleaning

 Keep IP protection.  Clean the stainless-steel parts with a soft cloth soaked with a cleaning agent

suitable for stainless steel.

 For stainless steel parts do not use any cleaning agents which contain sodium

hydroxide solution, acetic, hydrochloric, sulphuric or citric acid.

 Do not use metal brushes or cleaning sponges of steel wool, as this causes

superficial corrosion.

9.2 Service, maintenance

 The appliance may only be opened by trained service technicians who are

authorized by KERN.

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

control.

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.

28 KFE-TM-BA_IA-e-1313

9.4 Error messages

Error

message

Description

Possible causes

- - - - -

Maximum load exceeded

Unload weighing system or reduce

preload.

- - ol - -

Err 1

Incorrect data input

Follow format “yy:mm:dd“

Err 2

Incorrect time entry

Follow format “hh:mm:ss“

Err 4

Zeroing range exceeded due to switching-on balance or

pressing (normally 4% max)

Object on the weighing plate Overload when zeroing

Err 5

Keyboard error

Err 6

Value outside the A/D changer range

Weighing plate not installed Damaged weighing cell Damaged electronics

Err 9

Stability display does not appear

Check the environmental

conditions.

Err 17

Taring range exceeded

Reduce load

Fai l h / Fai l l

Adjustment error

Repeat adjustment.

Ba lo / Lo ba

Battery very low

Recharge battery

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

KFE-TM-BA_IA-e-1313 29

10 Instant help

Fault

Possible cause

The displayed weight does not glow.

The display unit is not switched on. 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 permanently changing

Draught/air movement Table/floor vibrations Weighing plate has contact with other objects. Electromagnetic fields / static charging (choose

different location/switch off interfering device if

possible)

The weighing result is obviously incorrect

The display of the balance is not at zero Adjustment is no longer correct. Great fluctuations in temperature. Warm-up time was ignored. Electromagnetic fields / static charging (choose

different location/switch off interfering device if

possible)

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:

30 KFE-TM-BA_IA-e-1313

11 Installing display unit / weighing bridge

Installation / configuration of the weighing system must be carried out by a well acquainted specialist with the workings of weighing balances.

Supply voltage:

5 V/150mA

Max. signal voltage

0  15 mV

Zeroing range

0  5 mV

Sensitivity

2-3 mV/V

Resistance parameter

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

11.1 Technical data

11.2 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

KFE-TM-BA_IA-e-1313 31

11.3 How to connect the platform

 Disconnect device from mains.  Pull load cell cable into the display unit through the screwable cable attachment.  Weld the individual wires of the load cell cable to the printed circuit board,

see fig. 1. Details can be seen in the technical data of the load cell.

Fig. 1

32 KFE-TM-BA_IA-e-1313

11.4 Configure display unit

Call-up configuration menu:

 In weighing mode press and at the same time and the first menu

block will appear.

 Press repeatedly until is displayed.

 Press , password query will appear.

 Press , , subsequently until the first menu item is

shown.

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.

 Switch into the available settings using .

 Either save by pressing or cancel by pressing .

Press repeatedly to exit menu.

KFE-TM-BA_IA-e-1313 33

Configuration menu overview:

Menu block Main menu

Menu item Submenu

Available settings / explanation

Not documented Single-range balance

Confirm by , after that the following menu items are available.

Position decimal point available selection 0, 0.0, 0.00, 0.000,

0.0000

Readability/verification value selectable 1, 2, 5, 10, 20, 50

Balance capacity (max)

Adjust weighing system according to configuration.

Adjustment, see chap. 6.7

For linearisation see chapter 6.8

34 KFE-TM-BA_IA-e-1313

Dual range balance

Confirm by , after that the following menu items are available.

Position decimal point available selection 0, 0.0, 0.00, 0.000, 0.0000

Readability / verification value for

1. Weighing range Selectable 1, 2, 5, 10, 20,

Readability / verification value for

2. Weighing range Selectable 1, 2, 5, 10, 20,

50 Balance capacity (Max) 1st weighing

range

Balance capacity (Max) 2nd weighing range

Adjust weighing system according to configuration.

Adjustment, see chap. 6.7

For linearisation see chap. 6.8

KFE-TM-BA_IA-e-1313 35

Multi-interval balance

Confirm by , after that the following menu items are available.

Position decimal point available selection 0, 0.0, 0.00, 0.000, 0.0000

Readability / verification value for

1. Weighing range Selectable 1, 2, 5, 10, 20,

Readability / verification value for

2. Weighing range Selectable 1, 2, 5, 10, 20,

Balance capacity (Max) 1st weighing range

Balance capacity (Max) 2nd weighing range

Adjust weighing system according to configuration.

Adjustment, see chap. 6.7

For linearisation see chapter 6.8

Not documented

Internal A/D converter value

Reset to default setting

Not documented

Weighing mode (tolerance weighing, totalizing)

Animal weighing mode

Not documented

12 Enclosure Declaration of conformity / Type approval /

Test certificate

36 KFE-TM-BA_IA-e-1313

KERN & Sohn GmbH

D-72322 Balingen-Frommern Postfach 4052 E-Mail: info@kern-sohn.de

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

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 with 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 conformitá

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

Conformiteitverklaring

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

Declaração de conformidade

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

Deklaracja

zgodności

Niniejszym oświadczamy, że produkt, którego niniejsze oświadczenie dotyczy,

jest zgodny z poniższymi normami.

RUS

Заявление о

соответствии

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

соответствует перечисленным ниже нормам.

EU Directive

Standards

2004/108/EC

EN55022: 2006 A1:2007 EN61000-3-3:1995+A1:2001+A2:2005 EN55024: 1998+A1:2001+A2:2003

2006/95/EC

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

Signatur

Signature

Datum

Date

08.04.2013

Ort der Ausstellung

Place of issue

72336 Balingen

Albert Sauter KERN & Sohn GmbH

Geschäftsführer

Managing director

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

Declaration of conformity

EG-Konformitätserklärung EC-Declaration of -Conformity EC- Déclaration de conformité EC-Declaración de Conformidad EC-Dichiarazione di conformità EC-Conformiteitverklaring EC- Declaração de conformidade EC- Prohlášení o shode EC-Deklaracja zgodności EC-Заявление о соответствии

Electronic Balance: KERN KFF-T; KFE-TM; SFE

KFE-TM-BA_IA-e-1313 37

Annex page 1 of 12 EC type-approval certificate no. DK 0199.312

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 2

3. Technical data 4

3.1 Indicator 4

3.2 Load receptors, load cells and load receptor supports 5

3.3 Composition of modules 5

3.4 Documents 5

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 Totalised weight is not a legal value. 6

5.3 Compatibility of modules 6

6. Special conditions for verification 6

6.1 Composition of modules 6

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 7

8.1 Indicator 7

9. Pictures 9

10. Composition of modules - illustrated 12

Issued by DELTA

Annex page 2 of 12 EC type-approval certificate no. DK 0199.312

1. Name and type of instrument and modules

The weighing instrument is designated KFA.. / KFE.. / KFC... 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 KFA-TM / KFC-TM) or stainless steel (Model KFE-TM).

The front panels of the indicator comprise of

- LCD display with backlight having appropriate state indicators and 6 digits (22 mm high)

- keyboard containing 5 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.

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.

Issued by DELTA

Annex page 3 of 12 EC type-approval certificate no. DK 0199.312

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 function is active the “G/N” (BG) 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 Check weighing

The indicator can be set to check the actual weight against a high and a low limit by the user pressing “Unit” and “M+” key simultaneously and then setting the appropriate parameters.

2.2.7 Weighing unstable samples

The indicator has a special mode for weighing unstable samples. As this mode is a configuration mode switching between this mode and normal weighing mode is not possible, when the indicator is sealed.

2.2.8 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 12 EC type-approval certificate no. DK 0199.312

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 1.00.

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 or automatic, if the equilibrium is stable.

The totalised value is a calculated value and shall be marked as such when printed.

2.2.12 Battery operation

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

3. Technical data

The KFA.. / KFE.. / KFC.. weighing instruments are composed of separate modules, which are set out as follows:

3.1 Indicator

The indicators have the following characteristics:

Type: KFA-TM / KFE-TM / KFC-TM 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 factor: 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: 350 ohm Maximum input impedance: 1200 ohm Mains power supply: 9 - 12 VDC / 230 VAC, 50 Hz using external adapter Operational temperature: -10 °C to +40 °C Peripheral interface: Set out in section 4

Issued by DELTA

Annex page 5 of 12 EC type-approval certificate no. DK 0199.312

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.

3.2 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 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), 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 Load cell 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 Load cell Load cell according to section 3.2.1 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. A530976) are valid for the weighing instruments described here.

Issued by DELTA

Annex page 6 of 12 EC type-approval certificate no. DK 0199.312

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

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 Measurement functions other than non-automatic functions

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

5.2 Totalised 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.

5.3 Compatibility 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 5.3.

An example of a declaration of conformity document is shown in section 10.

Issued by DELTA

Annex page 7 of 12 EC type-approval certificate no. DK 0199.312

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 prohibited (see figure 2, 4 and 6).

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 identification 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 Verification 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.

7.2.2 Printers used for legal transactions

Printers covered by this type approval and other printers according to section 4.2, which have been subject to the conformity assessment procedure, 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.

Issued by DELTA

Annex page 8 of 12 EC type-approval certificate no. DK 0199.312

8.1.2 Inscriptions

Manufacturer’s trademark and/or name and the type designation is located on the front panel overlay.

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

• Max, Min, e =, accuracy class

On the inscription plate:

• Manufacturer’s name and/or logo, 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 choice as provided in section 7.1.2:

• Serial no. of the indicator

Issued by DELTA

Annex page 9 of 12 EC type-approval certificate no. DK 0199.312

9. Pictures

Figure 1a KFA-TM indicator without finalisation of front.

Figure 1b Finalisation of front for KFA-TM.

Issued by DELTA

Figure 2 Sealing of KFA-TM indicator.

Annex page 10 of 12 EC type-approval certificate no. DK 0199.312

Figure 3a KFE-TM indicator without finalisation of front.

Figure 3b Finalisation of front for KFE-TM.

Issued by DELTA

Figure 4 Sealing of KFE-TM indicator.

Annex page 11 of 12 EC type-approval certificate no. DK 0199.312

Figure 5a KFC-TM indicator without finalisation of front.

Figure 5b Finalisation of front for KFC-TM.

Figure 6 Sealing of KFC-TM indicator.

Issued by DELTA

Annex page 12 of 12 EC type-approval certificate no. DK 0199.312

10. Composition of modules - illustrated

Issued by DELTA

Annex page 1 of 7 Annex to Test Certificate No. DK0199-R76-11.10

1. Name and type of instrument

The indicators KFA-TM / KFE-TM / KFC-TM are a family of weighing indicators suitable to be incorporated in a non-automatic weighing instruments, class III or class IIII, single-interval, dual-range or dual-interval.