KERN FTB User manual

Operating Instructions
Electronic Platform Balance
KERN FTB
Version 1.0 03/03
KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
Tel: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
E-Mail: [email protected]

2
1keypad
2scale specifications
3display
4weighing pan
5adjustable feet
6power supply:
6a: power cord(scale w/o battery)
6b: AC adapter (scale with battery)
8RS 3 C interface
10 spirit level ( only on certified scales )
11 hole for antitheft device
12 model plate
13 power cord or jack for AC adapter
14 maximum loads (ranges 1/ )
15 minimum loads (ranges 1/ )
16 verification scale interval (certified scale)
(ranges 1/ )
17 max. resolutions (ranges 1/ )
18 dynamic weighing symbol
19 net symbol when weighing with tare
20 weighing unit
21 stability detector
22 changed resolution (only certified scales)
23 certification brackets (certified scales e =10d)
25 weighing range display
26 battery discharge status
Rear of scale Scale specifications (example)
Display
Max1: 3kg Min1: 0g e1: 1g d1: 1g
Max : 6kg Min : 40g e : g d : g
1714 15 16
Overview
813 1112 10

3
Contents
1 Putting into service ....................................................................................................................... 4
1.1 Unpacking and checking contents .................................................................................................. 4
1. Safety and environmental protection ................................................................................................ 4
1.3 Positioning and leveling the scale ................................................................................................... 5
1.4 Connecting to power supply ............................................................................................................ 6
1.5 Battery operation ............................................................................................................................. 6
1.6 Monitoring the test substances ........................................................................................................ 7
1.7 Verification ....................................................................................................................................... 7
2 Weighing ....................................................................................................................................... 8
.1 Switching on and off and zeroing .................................................................................................... 8
. Simple weighing .............................................................................................................................. 8
.3 Weighing with tare ........................................................................................................................... 8
.4 Recording weighing results .............................................................................................................. 9
.5 Special functions (master mode) ..................................................................................................... 9
3 Master ode .............................................................................................................................. 10
3.1 Overview and operation ................................................................................................................ 10
3. Adjustment (CAL) ........................................................................................................................ 10
3.3 Scale calibration (adjustment) ...................................................................................................... 11
3.4 Scale settings ............................................................................................................................... 14
3.5 Interface configuration .................................................................................................................. 15
3.6 Printing master mode settings ...................................................................................................... 17
3.7 Saving settings and exiting master mode ..................................................................................... 17
3.8 Making a typical setting in master mode ......................................................................................17
4 Other i portant infor ation ...................................................................................................... 18
4.1 Error messages ............................................................................................................................ 18
4. Cleaning instructions .................................................................................................................... 19
4.3 Declaration of conformity ............................................................................................................ 0
4.4 GEO-value table ...........................................................................................................................
4.5 Technical data .............................................................................................................................. 3
4.6 Interface commands .................................................................................................................... 5

4
1Putting into service
Please read through these operating instructions carefully and adhere to them at all times. If you discover
that materials are missing or that the wrong ones have been supplied, or if you have any other problems
with your scale, please refer to the dealer or salesperson concerned.
1.1 Unpacking and checking contents
 Remove the scale and accessories from the packaging.
 Check for completeness. The basic scope of supply comprises:
 scale
 weighing pan
 AC adapter (only for models with integrated battery)
 operating instructions (this booklet)
 any special accessories as per packing list
1.2 Safety and environ ental protection
 Do not use the scale in hazardous areas (unless it is clearlyidenti-
fied as being approved for these areas).
 For service in wet areas or dusty environ ents, or if wet cleaning
is necessary, scales with IP 65 ingress protection must be used.
But even these scales must not be used in environments where
there is a risk of corrosion. The scales must never be drenched or
immersed in a liquid.
 If the power cord is damaged, the scale must no longer beoperat-
ed. Therefore check the cable regularly and ensure that a free space
of about 3 cm is left at the rear of the scale, so that the cable is not
kinked too severely.
 Never tamper with the retaining screws for the load plate support
underneath the weighing pan.
 When the weighing pan is removed, never insert a solid object
underneath the load plate support.
 It is not permitted to open the scale by removing the screws in its
base.
 Only use approved accessories and peripherals.
IP 65
ca. 3cm

5
 Handle the scale carefully; it is a precision instrument. Blows on the
weighing pan must be avoided, and heavy overloads must not be
placed on it.
 Important instructions when using FTB scales in the food sector:
those parts of the scale can come into contact with food products
have smooth surfaces and are easy to clean. The materials used do
not splinter and are free from contaminants. In food processing areas
it is recommended that a protective cover is used. This must be
cleaned regularly, just like the scale itself. Damaged or heavily
contaminated protective covers must be replaced immediately.
 When the scale is finally taken out of service, observe the current
environmental regulations. If the scale is equipped with a battery,
this contains heavy metals and therefore must not be treated as
normal refuse! Local regulations for disposing of environmentally
hazardous substances must be complied with.
1.3 Positioning and leveling the scale
The correct location is a decisive factor in ensuring accurate weighing
results.
 Choose a stable and vibration-free location . Place the scale on a
surface that is as horizontal as possible and strong enough to bear
its weight when fully loaded.
 Check the ambient conditions (Section 4.5).
 Avoid:
 direct sunlight
 strong drafts (e.g. from fans or air conditioning systems)
 excessive temperature fluctuations.
 Turn the adjustable feet so that the scale is horizontal. If a spirit level
is fitted, the bubble must be located within the inner circle.
Major changes in geographical location:
Every scale is set by the manufacturer to suit the local gravitational
conditions (geographical adjustment value) in the geographical zone
to which the instrument is supplied. If a major change of geographical
location takes place, this setting must be adjusted by a service
technician or a new setting made. Certified scales must in addition be
recalibrated in accordance with national certification regulations.

6
1.4 Connecting to power supply
 Before connecting the power supply plug or AC adapter (AccuPac
version), verify that the voltage stated on the model plate is the
same as the local power line voltage.
 Connect the power cord plug or the AC adapter plug to the supply,
then connect the AC adapter (AccuPac version) via the jack at the
rear of the scale.
Powering up the scale initiates a display test in which all the segments
and then the software version are briefly displayed. Once the decimal
zero appears in the display, the scale is ready to operate.
1.5 Battery operation
Scales with a built-in battery (AccuPac) can under normal operating
conditions work independently of the AC power line for about 0 hours
(MonoBloc version) or about 30 hours (strain gauge version).
Immediately the AC power supply is interrupted (by withdrawing the
power cord plug or if there is a power failure), the scale switchesauto-
matically to battery operation. Once the AC power supply is restored,
the scale reverts automatically to AC operation.
The battery symbol indicates the current discharge status of the
battery (1 segment corresponding to about 5% capacity). If the
symbol flashes, the battery must be recharged.
A discharged battery requires at least 8 hours until it is recharged.
During the charging process work with the scale can continue, but
under these conditions a longer charging time is needed.
The battery is protected against overcharging, and the scale can
therefore remain permanently connected with the AC power line
without any problems.
=000Ð

7
The metrology features of the balance and any possible available adjusting weight must be
checked at regular intervals within the scope of quality assurance. For this purpose, the
answerable user must define a suitable interval as well as the nature and scope of this check.
Information is available on KERNs home page (www.kern-sohn.com) with regard to the
monitoring of balance test substances and the test weights required for this. Test weights and
balances can be adjusted quickly and at a reasonable price in KERNs accredited DKD
calibration laboratory (return to national normal).
General:
According to the EU guideline 90/384/EEC balances must be verified officially if they are to be used
as follows (legally regulated area):
a) For commercial transactions if the price of goods is determined by weighing
b) For the production of medines in pharmacies as well as for analyses in the medical
and pharmaceutical laboratory
c) For official purposes
d) For the production of finished packages
In case of doubt, please contact your local office of weights and measures.
Verification information
An EU qualification approval is available for those balances marked as appropriate for verification in
the technical data. In the event that the balance is applied in an area subject to verification as described
above, it must be officially verified and re-verified at regular intervals.
Re-verification of a balance is carried out in compliance with the respective legal provisions of the
states. The term of verification validity for balances in Germany, for example, is normally years.
The legal provisions of the country of use are to be observed.
1.6
Monitoring
the
test
substances1.6
Monitoring
the
test
substances1.6
Monitoring
th
e
test
substances
1.7 Verification
1.6 Monitoring the test substances

8
2Weighing
This section describes how to switch the scale on and off, zero and tare it, weigh materials and record the
results.
2.1 Switching on and off and zeroing
 Briefly pressing the key switches the scale on or off.
The scale carries out a display test (Section 1.4). Once the weight
display appears, the scale is ready to operate and automatically
zeroed.
Note: When necessary, the scale can be zeroed at any time with
the key.
2.2 Si ple weighing
 Place the object to be weighed on the scale.
 Wait until the stability detector (a small ring in the bottom left corner
of the display) disappears, then ...
 ... read the indicated weight.
2.3 Weighing with tare
 Place the e pty weighing container or packaging on the scale.
 Press the key briefly to tare the scale. The zero display and the
NET (net weight) symbol appear. Note: If the automatic tare
function has been activated in master mode (Section 3.4), there is
no need to press the key.
NET
=000Ð
=000Ð
 "416Ð
"420Ð

9
Place the material to be weighed in the container, then ...
 ... read the indicated net weight.
2.4 Recording weighing results
 Press the key to send the current weighing result to the peripheral
device (printer, computer) via the interface. Factory default configures
interface 1 for connection to a printer.
Please refer to Section 3.5 for instructions on configuring the
interface(s).
2.5 Special functions ( aster ode)
In addition to simple weighing functions, the scale also has additional
options and settings that can be activated in master mode Sec-
tion3).
NET
ç216Ð
MAStEr

10
3Master mode
Inmaster mode the scale settings can be changed and the various functions activated  to adapt the scale
for individual weighing needs.
3.1 Overview and operation
As the acceleration value due to gravity is not the same at every location on earth, each balance
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 balance has not already been adjusted
to the location in the factory). This adjustment process must be carried out during the initial start-
up, after change in location and variation of surrounding temperature. It is also recommendable to
adjust the balance periodically during weighing operation in order to obtain exact measured values.
Calibration
CAL
Settings
SCALE
Interface 1
1FACE1 1FACE 2
Print
LiSt
End
ENd
NAStEr
J
J
J J J J J
J
J
JJJJJ
Section 3.3 Section 3.4 Section 3.5 not docu-
mented
Section 3.6 Section 3.7
Weigh ode
=000Ð
Interface 2
J
*
Hold down key (about 5 seconds)
Briefly press key (YES). * Confirm the MASTER display
within 3 seconds to enter master mode.
Briefly press key (NO)
J
J
J
3.2 Adjust ent (CAL)

11
CAL
15000
1%000Ð
3.3.1 Calibration (adusting of non verifiable balances
This aster ode block is not available with certified scales.
 Remove the load from the weighing pan and then press the
key to start the calibration procedure.
 The flashing display shows the calibration weight. If desired, the
key can be used to select other calibration weights.
 Place the indicated calibration weight on the scale and confirm
with .
Note: The calibration procedure can be canceled at any time with
the key.
 Wait until the calibration has been successfully completed
(confirmed by the message done in the display) and the scale
reverts to weighing mode.
3.3 Scale calibration (adjust ent)
3.3.2 Calibration (adjusting of verifiable balances
 Switch off the scale.
 Remove the scale bottom plate by undoing the Torx TX 0 retaining screws .
Important: In order to remove the bottom plate it is necessary to break the certi ication seal affixed
to it! Once this seal has been destroyed, the scale must be recerti ied by an accredited
organization, and a new certi ication seal must be a ixed be ore the instrument may
be used as a certi ied scale again!
 Hold down the service switch (pushbutton) on the analogprint(indicated by an arrow in the drawings
below, while at the same time switching on the scale. Keep the service switch pressed in until Service
appears in the display.

12
1. Display Service
Press the key (within 0 sec)
2. Display RMP
Press the key
3. Display SNR
Press the key
4. Display METROLO
Press the key
5. Display RANGE
Press the key
6. Display GEO (adjustment by means of GEO value
The GEO value can be set in this block and the balance also adapted to the local gravity ratios
without adjusting weights.
Case a)You are familiar with the GEO values.
In this case, adjustment can be carried out without adjusting weights.Once the key
has been pressed, the current GEO value will be displayed. Press the key. in order to
alter the GEO value. The next value is displayed every time the key is pressed (adjustment
range: 0 - 31). See the GEO value chart in chapter 4.4 for the appropriate value.
Confirm the selected GEO value using the key . END will appear on the display
screen and adjustment is now completed. Press the key to save the alterations.
Store will appear on the display screen.Use the key to confirm. Following this the
balance will return to weighing mode. Please note: The GEO value may not be re-
adjusted following this adjustment by means of GEO value, as this would cause the set
adjusting values to become invalid.
Case b)You are NOT familiar with the GEO values.
In this case adjustment must be made using adjusting weights (see item 8).
Press the key .

13
7. Display LIN
Press the key
8. Display CAL (adjustment by means of adjusting weights
 Press the key. SET PL will appear on the display screen.
Press the key in ordfer to start the calibration procedure.
 You will subsequently be asked to adjust your weighing system at a certain value
 In the event that you do not wish to make the adjustment using this value
(e.g. because you do not have sufficient weights at your disposal, keep pressing the key
until the desired adjusting weight appears on the display screen (the adjusting weight is
reduced each time the key is pressed).
Note: It is recommended in general to adjust the balance when ully loaded
 Apply the selected adjusting weight and use the key to confirm.
Successful completion of adjustment is confirmed when done appears on the display screen.
END will appear automatically on the display screen (now see item 9).
9. Display END
Remove the adjusting weights from the weighing plate!
Press the key order to save the alterations.
Store will appear on the display screen.
Press the key to confirm.
Following this the balance will return to weighing mode.
After you exit from the service mode, the scale must be switched off and then
back on again!

14
3.4 Scale settings
The second master mode block contains a total of 11subblocks for
setting the scale and activating its functions.
Function/Display Settings Re arks
Depends on model, example:
0.01kg/0.0 kg/.../0.005kg
Certified scales: changed
settings indicated with * and
with no weighing unit. Afterre-
start the standard setting (see
certification label) is active.
The symbol l<>l 1/  appears
when set for weighing ranges:
Example: 15kg scale:
1. Range 0  6kg
Resolution g
. Range 6  15 kg
Resolution 5 g
In order to switch from the nd
range back to the 1st range, the
load must first be removed from the
scale or it must be zeroed.
g1), kg1), oz1), lb1) Factory setting as per model plate.
Not available for certified scales.
Automatic zero correction
Off
Corrects the scale zero auto-
matically. Not available for certi-
fied scales.
Automatic tare function
Off 1)
Tares the scale automatically
Off ( No)1)
If function is activated (Yes =
Off
On in battery operation = back-
Resolution
rESolu
Weighing unit
Unit
On 1)
A -2ErO
On
A - tArE
On ( Yes)
PWrOFF
On 1)
b.Light
SCALE
lit for about 5 seconds.
Auto memory function
as soon as the empty weighing
container is placed on the pan
(T flashes in the display).
Automatic shutoff
factory setting for scales with
battery), the scale switches off
automatically after some 3 min-
utes ofinactivity.
Backlighting
Off 1)
Last tare and zero are saved
On
rEStArt
when scale switched off. Not avail-
able for certified scales.
1) factory setting
(continued on next page)

15
Med1)
Low
High
nor al environ ent
very tranquil environment (imme-
diate stop for display)
high vibration levels
Vibration adapter
VibrAt
Univer1)
Dosing
Dynamic
nor al weighing sa ples
dispensing (e.g. of liquid or pow-
ders)
restless load, e.g. animals
Weighing process adapter
ProcES
Resets all SCALE settings to
the factory settings.
Confirm reset by pressing o r
cancel with .
Note: To reset the adjustments,
the prompt Std On must be con-
firmed with .
Reset
rESEt
Exit the SCALE block. Press to exit the SCALE
block, or to make further
settings.
End settings.
End SC
1) factory setting
Function/Display Settings Re arks
IFACE1
3.5 Interface configuration
The scale interfaces can be configured in this block.
Function/Display Settings Re arks
Mode Print (printer) 1) 5)
Cycle (series weighing) ) 5)
Dialog (computer) 3) 4) 5)
 nd Display
2400 bd, 7b even, Xon/Xoff
400 bd, 7b even, Xon/Xoff
9600 bd, 8b no parity, Xon/Xoff
9600 bd, 8b no parity, Xon/Xoff
Transmission protocol HONOFF 1 )
No
Xon/Xoff protocol
no protocol
Bits and parity 7 Even 1)
7 No P
8 No P
7 Odd
7 data bits with even parity
7 data bits with no parity
8 data bits with no parity
7 data bits with odd parity
ModE Com 1
ProtoKCom 1
PAritY Com 1
(continued on next page)

16
Data transfer rate
300, 600, 1 00, 2400 1),
4800, 9600, 19 00 baud
Data and formatting to be
transferred
Header (On 1)/Off) 6)
Gross (On 1) /Off)
Net (On 1)/Off)
Tare (On 1)
/Off)
4 LinF (On 1)
/Off)
F Feed (On/Off 1))
Ln for (Single 1)
/Multi)
Report heading
gross weight
net weight
tare
4 e pty lines
form feed
Single = 1 result per line,
Multi = all results on 1 line
Reset Resets all settings of selected
interface to factory settings.
Reset with key (confirming
Std On query by pressing
again) or cancel with .
End settings Exit the interface block. Press to exit interface block
or to make further settings.
bAUd Com 1
dEFStrCom 1
rESEt Com 1
End IF1 Com 1
1) Factory setting
) Data printout when weight changes.
3) The Dialog mode is used for bidirectional communication of the
scale with an external device (e.g. a computer). Further informa-
tion is given in Section 4.6.
5) If this operating mode is selected, the associated default settings
(see Remarks column) are automatically adopted.
6) This setting specifies whether a record header is to appear on the
printouts. This consists of up to 5 lines, each with a maximum of
4 characters (e.g. company name and address). The record
header is created and formatted by means of SICS commands via
the interface (see Section 4.6). A typical record with a header is
shown opposite.
Function/Display Settings Re arks

17
3.6 Printing aster ode settings
In this block all master mode settings can be recorded with a printer.
 Press key to print out the settings.
3.7 Saving settings and exiting aster ode
In the last master mode block you can save your settings and revert to
weighing mode.
 Press the key to exit master mode.
Press the key to save the settings or the
key to cancel them. The scale then reverts to weighing mode.
3.8 Making a typical setting in aster ode
You want to set the readability resolution) at 0.01kg.
Hold down the key for about 5 seconds to access master mode,
and confirm that you really want this by briefly pressing (Yes)
within 3 seconds.
 Skip the first master mode block CAL (Calibration, not available
with certified scales) by pressing (No).
 Activate the block for scale settings (Scale) and then the subblock
for resolution (Resolution) by pressing (Yes) twice.
 Press (No) repeatedly until the desired resolution (0.1kg)
is displayed, then confirm by pressing (Yes).
 Answer the prompt End with (Yes) as you do not want to
make more settings. If you press (No), however, you can make
further settings.
 Answer the prompt Store? (Save in memory) with (Yes).
The scale reverts to weighing mode and operates with the new
settings. If you reply with (No), the changes will not be saved.
LiSt
ENd
StorE ?
MAStEr
CAL
SCALE
rESOLU
=01 Ð
ENd
StorE ?
=00Ð

18
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Err 6
Err 53
4Other important information
This section gives information on error messages and instructions for cleaning your scale. It also includes
the declaration of conformity and technical data.
4.1 Error essages
Overload
Reduce the load on the scale or the preload.
Underload
Place weighing pan on the scale and ensure that it can move freely.
Weight reading does not stabilize.
1.Ensure a tranquil environment.
.Ensure that the weighing pan is free to move.
3.Change the setting of the vibration adapter (Section 3.4).
4.If necessary use the dynamic weighing function (Section 3.4).
Not possible to zero scale
Ensure that zeroing is only carried out in the permissible range and
not under overload or underload conditions.
No calibration/adjust ent
Disconnect the power cord plug and then plug it in again. (If operating
on the battery, switch the scale off and then on again.) If the error
message reappears, calibrate/adjust the scale (Section 3.3). If this
does not help, contact your dealer or local representative.
EAROM checksu error
Disconnect the power cord plug and then plug it in again. (If operating
on the battery, switch the scale off and then on again.) If the error
message reappears, contact your dealer or local representative.

19
4.2 Cleaning instructions
 Disconnect the scale from the power supply before cleaning it!
 Use a damp cloth (do not use acids, alkalis or strong solvents).
 Wet cleaning is only allowable on scales with IP65 ingresspro-
tection.
 If heavily contaminated, the weighing pan, protective cover (iffitt-
ed) and adjustable feet must be removed and cleaned separately.
 With the weighing pan removed, never use a solid object to clean
underneath the load plate support!
 Observe your organizations internal rules and industry-specific
regulations for cleaning intervals and permissible cleaning agents.

20
4.3 Declaration of confor ity
Konformitätserklärungen
Declaration of conformity for apparatus with CE mark
Konformitätserklärung für Geräte mit CE-Zeichen
Déclaration de conformité pour appareils portant la marque CE
Declaración de conformidad para aparatos con disitintivo CE
Dichiarazione di cofnromitá per apparecchi contrassegnati con la marcatura CE
English We hereby declare that the product to which this declaration refers conforms with
the following standards.
Deutsch Wir erklären hiermit, daß das Produkt, auf das sich diese Erklärung bezieht, mit den
nachstehenden Normen übereinstimmt.
Français Nous déclarons avec cela responsabilité que le produit, auquel se rapporte la
présente déclaration, est conforme aux normes citées ci-après.
Español Manifestamos en la presente que el producto al que se refiere esta declaración
est´´a de acuerdo con las normas siguientes
Italiano Dichiariamo con ciò che il prodotto al quale la presente dichiarazione si riferisce è
conforme alle norme di seguito citate.
Electronic Scale: KERN FTB/KERN FTC
ApprovalTest-
Mark applied EU Directive Standards certificate N°
73/ 3EEC Low EN 61010-01
Voltage
89/336/EEC EMC EN550 Emission Kl. B:
EN61000-3-
EN61000-3-3
EN5008 -1
90/384EEC EN45501 1) T6179 1)
^ Non automatic
weighing
Instruments 1)
[ [
[ [
[year]]
]]
][[
[[
[code]]
]]
]M 1)
1) applies only to certified balances
gilt nur für geeichte Waagen
valable uniquement pour les balances vérifiées
sólo aplicable a balanzas verficadas
la dichiarazione vale solo per le bilance omologate
Date: 21.03.2003 Signature:
Gottl. KERN & Sohn GmbH
Management
Gottl. KERN & Sohn GmbH, Ziegelei 1,D-72336 Balingen, Tel. +49-[0]7433/9933-0,Fax +49-[0]7433/9933-149