KERN ITB User manual

KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: [email protected]
Tel: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Operating instruction
Platform scale
KERN ITB
Version 2.1
11/2007
GB
ITB-BA-e-0721
ME-Nr.: 22017071

Table of contentsITB-BA-e-0720
3User manual ME-Nr. 22017071 01/07
Table of contents
Page
1 Introduction .....................................................................................4
1.1 Safety instructions .............................................................................4
1.2 Description ......................................................................................5
1.3 Putting into operation ........................................................................9
2 Operation ......................................................................................11
2.1 Switching on and off .......................................................................11
2.2 Zeroing / Zero point correction ..........................................................11
2.3 Simple weighing .............................................................................11
2.4 Weighing with tare ..........................................................................12
2.5 Dynamic weighing ..........................................................................13
2.6 Printing results ...............................................................................13
2.7 Cleaning ........................................................................................14
3 Settings in the menu ......................................................................15
3.1 Operating the menu ........................................................................15
3.2 Overview .......................................................................................17
3.3 Scale settings (SCALE) ....................................................................19
3.4 Application settings (APPLICATION) ..................................................22
3.5 Terminal settings (TERMINAL) ..........................................................22
3.6 Configuring interfaces (COMMUNICATION) .........................................25
3.7 Diagnosis and printing out of the menu settings (DIAGNOS) ................29
4 Interface description ......................................................................30
4.1 SICS interface commands ................................................................30
4.2 TOLEDO Continuous mode ..............................................................33
5 Event and error messages ..............................................................35
6 Technical data and accessories ......................................................37
6.1 Technical data ................................................................................37
7 Appendix ......................................................................................39
7.1 Table of Geo Values ........................................................................39
7.2 Sample protocols ............................................................................42
8 Index ............................................................................................43

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Introduction
User manual ME-Nr. 22017071 01/07
1 Introduction
1.1 Safety instructions
DANGER!
Electric shock hazard!
▲Always pull out the mains plug before any work on the device.
DANGER!
Electric shock hazard if the mains cable is damaged!
▲Check the mains cable for damage regularly and replace it immediately if it is dam-
aged.
▲On the rear side of the device, maintain a clearance of at least 3 cm in order to
prevent the mains cable bending too much.
CAUTION!
Do not use ITB-balances in hazardous areas!
Our product range includes special devices for hazardous areas.
CAUTION!
Use only scales with Protection Class IP65, if:
•the scale is used in wet areas
•wet cleaning is necessary
•the scale is used in a dusty environment
Even with Protection Class IP65, the scale must not be used in environments with cor-
rosion risk.
▲Never flood the scale or immerse it in liquid.

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5User manual ME-Nr. 22017071 01/07
CAUTION!
On no account open the device!
The warranty is void if this stipulation is ignored. The device may only be opened by
authorized persons.
Note Use with foodstuffs
Parts coming into contact with foodstuffs have smooth surfaces and are easy to clean.
The materials used do not splinter and are free of harmful substances.
With foodstuffs, it is recommended to use the supplied protective cover.
➜Clean the protective cover regularly and carefully.
➜Replace damaged or very dirty protective cover immediately.
1.2 Description
The power supply is carried out via a built-in power supply device or an external bat-
tery.
One of the following options can also be ordered:
•Additional interface RS232
•Ethernet interface
•OptionBox for AccuPac
Disposal
➜Observe the valid environmental regulations when disposing of the scale.
If the device has a rechargeable battery:
The battery contains heavy metals and therefore must not be disposed of with normal
waste.
➜Observe the local regulations for disposing of environmentally hazardous materi-
als.

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Introduction
User manual ME-Nr. 22017071 01/07
1.2.1 Overview
1Display
2Specifications, rating
plate
3Keys
1Power supply
connection
2Weighing platform
connection
3Optional interface
4RS232 interface
4321

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1.2.2 Display
1Active interface
2Weighing range display
3Battery charge level; only present on scales with a battery
4Symbol for displaying net values
5Symbol for dynamic weighing
6Weight units
77-segment display, 7 digits, with decimal point
8Stability monitor (goes out when a stable weight value is reached)
9Sign
10 Identification for changed or calculated weight values, e. g. higher resolution,
minimum weight not reached

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Introduction
User manual ME-Nr. 22017071 01/07
1.2.3 Keypad
Main functions
Additional functions
Key Function in operating mode Function in the menu
Switching device on / off, abort To the last menu item –End-
Setting scale to zero Scrolling back
Taring scale Scrolling forward
Transfer key
Long key press: Calling up menu
Activating menu item
Accepting selected setting
Key Function
Switching weight unit
Clear key

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1.3 Putting into operation
1.3.1 Connecting the power supply
CAUTION!
Before connecting the scale to the mains, check whether the voltage value printed on
the rating plate corresponds with the local mains voltage.
▲Never connect the device if the voltage value printed on the rating plate is different
to the local mains voltage.
➜Plug the mains plug into the socket.
After connection, the device performs a self-test. When the zero display appears,
the device is ready to weigh.
➜Calibrate the device in order to obtain the greatest possible precision, see
Section 3.3.1.
Note The battery’s charging capacity can be reduced under continuous mains operation.
➜To maintain the charging capacity, after a maximum of 4 weeks discharge the bat-
tery completely before recharging it.
1.3.2 Monitoring the test substances
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).
Terminals with AccuPac can work independently from the mains for approximately
30 hours in normal operation. A prerequisite for this is that the background lighting
is switched off and that no peripheral devices are connected.
The battery symbol indicates the present charging level of the battery. 1 segment cor-
responds to approx. 25 % capacity. When the symbol flashes the battery must be
charged (min. 4 hours). The charging period is extended if work is continued during
charging. The battery is protected against overcharging.

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Introduction
User manual ME-Nr. 22017071 01/07
1.3.3 Adjustment
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):
•For commercial transactions if the price of goods is determined by weighing
•For the production of medines in pharmacies as well as for analyses in the medical
and pharmaceutical laboratory
•For official purposes
•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 pro-
visions of the states. The term of verification validity for balances in Germany, for
example, is normally 2 years.
The legal provisions of the country of use are to be observed.

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Operation
User manual ME-Nr. 22017071 01/07
2 Operation
2.1 Switching on and off
Switching on ➜Press .
The scale conducts a display test. When the weight display appears, the scale is
ready to weigh.
Switching off ➜Press .
Before the display goes out, -OFF- appears briefly.
2.2 Zeroing / Zero point correction
Zeroing corrects the influence of slight changes on the load plate.
Manual 1. Unload scale.
2. Press .
The zero display appears.
Automatic In the case of scales that cannot be certified, the automatic zero point correction can
be deactivated in the menu or the amount can be changed.
As standard, the zero point of the scale is automatically corrected when the scale is
unloaded.
2.3 Simple weighing
1. Place weighing sample on scale.
2. Wait until the stability monitor goes out.
3. Read weighing result.

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2.4 Weighing with tare
2.4.1 Taring
➜Place the empty container on the scale and press .
The zero display and the symbol NET appear.
The tare weight remains saved until it is cleared.
2.4.2 Clearing the tare
➜Unload scale and press .
The symbol NET goes out, the zero display appears.
or
➜Press .
The symbol NET goes out, the gross weight appears in the display.
If A.CL-tr is activated in the menu, the tare weight is automatically cleared as soon
as the scale is unloaded.
2.4.3 Automatic taring
Prerequisite
A-tArE is activated in the menu, the symbol Tflashes in the display.
➜Place the container or packaging material on the scale.
The packaging weight is automatically saved as the tare weight, the zero display
and the symbol NET appear.
2.4.4 Chain tare
Prerequisite
The tare function CHAIn.tr is activated in the menu.
With this function it is possible to tare several times if, for example, cardboard is
placed between individual layers in a container.
1. Place the first container or packaging material on the scale and press .
The packaging weight is automatically saved as the tare weight, the zero display
and the symbol NET appear.
2. Weigh the weighing sample and read/print out the result.
3. Place the second container or packaging material on the scale and press
again.
The total weight on the scale is saved as the new tare weight. The zero display
appears.
4. Weigh the weighing sample in the second container and read/print the result.
5. Repeat the last two steps for other containers.

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Operation
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2.5 Dynamic weighing
With the dynamic weighing function, it is possible to weigh restless weighing samples
such as live animals. If this function is activated, the symbol appears in the dis-
play.
With dynamic weighing, the scale calculates the mean value from 56 weighing oper-
ations within 4 seconds.
With manual start Prerequisite
AVErAGE -> MAnuAL is selected in the menu.
The weighing sample must be heavier than 5 scale divisions.
1. Place the weighing sample on the scale and wait until it has stabilized.
2. Press to start dynamic weighing.
During dynamic weighing, horizontal segments appear in the display, and the
dynamic result is then displayed with the symbol *.
3. Unload the scale to be able to start a new dynamic weighing operation.
With automatic start Prerequisite
AVErAGE -> AUtO is selected in the menu.
The weighing sample must be heavier than 5 scale divisions.
1. Place the weighing sample on the scale.
The scale starts the dynamic weighing automatically.
During dynamic weighing, horizontal segments appear in the display, and the
dynamic result is then displayed with the symbol *.
2. Unload the scale to be able to perform a new dynamic weighing operation.
2.6 Printing results
If a printer or computer is connected to the scale, the weighing results can be printed
out or sent to a computer.
➜Press .
The display contents are printed out and transferred to the computer. See
Section 7.2 for sample protocols.

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2.7 Cleaning
CAUTION!
Electric shock hazard!
▲Before cleaning with a damp cloth, pull out the mains plug to disconnect the unit
from the power supply.
Other cleaning information:
•Use damp cloths.
•Do not use any acids, alkalis or strong solvents.
•Do not clean using a high-pressure cleaning unit or under running water.
•Follow all the relevant instructions regarding cleaning intervals and permissible
cleaning agents.

Settings in the menuITB-BA-e-0720
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3 Settings in the menu
Settings can be changed and functions can be activated in the menu. This enables
adaptation to individual weighing requirements.
The menu consists of 6 main blocks containing various submenus on several levels.
3.1 Operating the menu
3.1.1 Calling up the menu and entering the password
The menu differentiates between 2 operating levels: Operator and Supervisor. The
Supervisor level can be protected by a password. When the device is delivered, both
levels are accessible without a password.
Operator menu 1. Press and keep it pressed until COdE appears.
2. Press again.
The menu item tErMINL appears. Only the submenu dEVICE is accessible.
Supervisor menu 1. Press and keep it pressed until COdE appears.
2. Enter the password and confirm with .
The first menu item SCALE appears.
Note No supervisor password has been defined when the device is first delivered. Therefore
respond to the password inquiry with when you call up the menu for the first time.
If a password has still not been entered after a few seconds, the scale returns to weigh-
ing mode.
Emergency password for Supervisor access to the menu
If a password has been issued for Supervisor access to the menu and you have for-
gotten it, you can still enter the menu:
➜Press 3 times and confirm with .

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Settings in the menu
User manual ME-Nr. 22017071 01/07
3.1.2 Selecting and setting parameters
Scrolling on one level ➜Scroll forward: Press .
➜Scroll back: Press .
Activating menu items/
accepting selection
➜Press .
Exiting menu 1. Press .
The last menu item END appears.
2. Press .
The inquiry SAVE appears.
3. Confirm inquiry with to save the settings and return to weighing mode.
-or-
➜Press to discard changes and return to weighing mode.
SCALE APPLIC tErMINL COMMUNI dIAGNOS End
CAL dISPLAY tArE
SLEEP PWr.OFF b.LIGHt MOdE
COM 1 ...
PriNtEr PArAMEt
dEVICE ACCESS
COdE
rESEt COM 2
...
rSt. COMX

Settings in the menuITB-BA-e-0720
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3.2 Overview
Level 1 Level 2 Level 3 Level 4 Level 5 Level 6 Page
SCALE CAL 19
dISPLAY UNIt1 g, kg, oz, lb, t 21
UNIt2 g, kg, oz, lb, t
rESOLU
UNt.rOLL ON, OFF
tArE A-tArE ON, OFF 21
ChAIn.tr ON, OFF
A.CL-tr ON, OFF
ZErO AZM OFF; 0.5 d; 1 d; 2 d; 5 d; 10 d 21
rEStArt ON/OFF 21
FILtEr VibrAt LOW, MEd, HIGH, 21
PrOCESS UNIVEr, dOSING
StABILI FASt, StAndrd, PrECISE
rESEt SUrE? 22
APPLIC AVErAGE OFF, AUtO, MAnuAL 22
rESEt SUrE? 22
tERMINL dEVICE SLEEP OFF, 1 min, 3 min, 5 min 22
PWr OFF YES, NO
b.LIGHt ON, OFF
ACCESS SUPErVI 24
rESEt SUrE? 24
COMMUNI COM 1/COM 2 MOdE Print 25
A.Print
CONtINU
dIALOG
CONt.OLd
dIAL.OLd
dt-b GrOSS ON, OFF
tArE ON, OFF
nEt ON, OFF
dt-G GrOSS ON, OFF
tArE ON, OFF
nEt ON, OFF

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Settings in the menu
User manual ME-Nr. 22017071 01/07
COnt-Wt
2nd.dISP
PriNtEr tEmPLat StdArd, tEMPLt1,
tEMPLt2
25
ASCi.Fmt LINE.FMt MULtI SIN-
GLE
LENGtH 1 ... 100
SEPArAt , ;...
Add LF 0 ... 9
PArAMEt bAUd 300 ... 38400 25
PAritY 7 nonE, 8 nonE, 7 odd,
8 odd, 7 EVEN, 8 EVEN
H.SHAKE NO, XONXOFF, nEt 422,
nEt 485
NEt.Addr 0 ... 31
ChECSuM ON, OFF
Vcc ON, OFF
rSt.COMx SUrE? 26
COMMUNI OPtION EtH.NEt IP.AddrS, SUbNEt, GAtEWAY 26
USb USb tESt 26
diGitAL IN 1 ... 4OFF, ZErO, tArE, Print,
CLEAr, Unit
26
OUT 1... 4OFF, StAbLE, bEL.Min,
AbV.Min, UndErLd,
OVErLd, StAr
dEF.PrN tEmPLt1/
tEMPLt2
LINE 1 ...
LINE 20
NOt.USEd,HEAdEr, GrOSS,
tArE, nEt, StArLN,
CrLF, F FEEd
27
dIAGNOS tESt SC ExtErN 28
KboArd
dISPLAY
SNr
LiSt
rESEt.AL SUrE?
Level 1 Level 2 Level 3 Level 4 Level 5 Level 6 Page

Settings in the menuITB-BA-e-0720
19User manual ME-Nr. 22017071 01/07
3.3 Scale settings (SCALE)
3.3.1 CAL – calibration (adjustment)
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.
This menu item is not available for certified scales without internal calibration weight.
Adjusting of non verifiable balances
Adjusting of verifiable balances
•Switch off the scale.
•Remove the scale bottom plate by undoing the Torx TX20 retaining screws .Impor-
tant: In order to remove the bottom plate it is necessary to break the certification
seal affixed to it! Once this seal has been destroyed, the scale must be recertified
by an accredited organization, and a new certification seal must be affixed before
the instrument may be used as a certified 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 "Scale" appears in the display.
External For scales without an internal calibration weight:
1. Unload scale.
2. Activate menu item CAL with . The scale determines the zero point.
–0- appears in the display. The calibration weight to be placed on the scale then
flashes in the display.
3. If necessary, change the weight value displayed with .
4. Place the calibration weight on the scale and confirm with .
The scale calibrates with the calibration weight loaded. After calibration is com-
pleted, -donE- appears briefly in the display, and the scale automatically returns
to weighing mode.

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Settings in the menu
User manual ME-Nr. 22017071 01/07
Small platform model Large platform model
1.Display "Scale":Press the -key (within 20sec)
2.Display "Metrolo":Press the -key
3.Display "ramp":Press the -key
4.Display "SNR":Press the -key
5.Display "SCAL.bld":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 grav-
ity ratios without adjusting weights.
Case a)You are familiar with the GEO values.
Once the -key has been pressed, the current GEO value will be displayed.
Press the or -key, in order to alter the GEO value. . The next value is dis-
played every time the key is pressed (adjustment range: 0 - 31). See the GEO value
chart in chapter 7.1.1 for the appropriate value.
Confirm the selected GEO value using the -key.
Please note: The GEO value may not be readjusted 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.
7.Display "LIN-CAL:" Press the -key.
8.Display "CAL:" Press the -key.
Press the -key. The scale determines the zero point. -preload- appears in the dis-
play. The calibration weight to be placed on the scale then flashes in the display.
If necessary, change the weight value displayed with
Place the calibration weight on the scale and confirm with
The scale calibrates with the calibration weight loaded. After calibration is completed,
-done- appeats briefly in the display.