KERN IFB-BA-e-1012 User manual

KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
email: [e-mail]
Phone: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Operating instructions
Platform scale
KERN IFB
Version 1.2
02/2010
GB
IFB-BA-e-1012

GB KERN IFB
Version 1.2 02/2010
Operating instructions platform scale
Table of Contents
1Technical Data................................................................................................... 4
2Appliance overview........................................................................................... 7
2.1 Keyboard overview.......................................................................................................8
2.1.1 Numeric input via navigation keys..................................................................................... 9
2.2 Overview of displays.....................................................................................................9
3Basic Information (General) ........................................................................... 10
3.1 Proper use..................................................................................................................10
3.2 Improper Use..............................................................................................................10
3.3 Warranty.....................................................................................................................10
3.4 Monitoring of Test Resources.....................................................................................10
4Basic Safety Precautions................................................................................ 11
4.1 Pay attention to the instructions in the Operation Manual..........................................11
4.2 Personnel training.......................................................................................................11
5Transportation & Storage............................................................................... 11
5.1 Testing upon acceptance ...........................................................................................11
5.2 Packaging / return transport.......................................................................................11
6Unpacking and implantation .......................................................................... 12
6.1 Installation Site, Location of Use................................................................................12
6.2 Unpacking/implantation..............................................................................................12
6.3 Mains connection........................................................................................................13
6.4 Adjustment..................................................................................................................13
6.5 Verification..................................................................................................................14
IFB-BA-e-1012
2

IFB-BA-e-1012 3
7Operation ......................................................................................................... 15
7.1 Start-up.......................................................................................................................16
7.2 Switching Off ..............................................................................................................16
7.3 Zeroing .......................................................................................................................16
7.4 Simple weighing .........................................................................................................16
7.5 Weighing with tare......................................................................................................17
7.6 Weighing with tolerance range...................................................................................17
7.7 Manual totalizing.........................................................................................................20
7.8 Automatic adding-up...................................................................................................22
7.9 Animal weighing .........................................................................................................23
7.10 Lock keyboard............................................................................................................23
7.11 Display background illumination.................................................................................23
7.12 Automatic switch-off function “AUTO OFF“ ...................................................................24
8Menu................................................................................................................. 25
9Service, maintenance, disposal ..................................................................... 27
9.1 Cleaning .....................................................................................................................27
9.2 Service, maintenance.................................................................................................27
9.3 Disposal......................................................................................................................27
9.4 Error messages..........................................................................................................27
10 Data output RS 232C ................................................................................... 28
10.1 Technical Data............................................................................................................28
10.2 Printer mode...............................................................................................................29
10.3 Continuous data output ..............................................................................................29
11 Instant help................................................................................................... 30

IFB-BA-e-1012
4
1 Technical Data
KERN IFB 6K1DM IFB 15K2DM IFB 15K2DLM
Readability (d) 1 g / 2 g 2 g / 5 g 2 g / 5 g
Weighing range (max) 3 kg / 6 kg 6 kg / 15 kg 6 kg / 15 kg
Minimum load (Min) 20 g 40 g 40 g
Verification value (e) 1 g / 2 g 2 g / 5 g 2 g / 5 g
Verification class III III III
Reproducibility 1 g / 2 g 2 g / 5 g 2 g / 5 g
Linearity ± 1 g / 2 g ± 2 g / 5 g ± 2 g / 5 g
Recommended
adjustment weight, not
added (class)
6 kg
(M1) 15 kg (M1) 15 kg (M1)
Warm-up time 10 minutes
Stabilization time (typical) 2 sec.
Weighing unit kg
Auto Off Available options 5, 15 min.
Ambient temperature -10°C – 40°C
Moist environment 0 % - 80 % (non-condensing)
Input voltage 220 V – 240 V, 50 Hz
Electric Supply Power pack secondary voltage 9V, 800mA
Dimensions display unit
(B x D x H) mm 250 x 160 x 58
Weighing surface mm 300 x 240 x 80 300 x 240 x 80 400 x 300 x 80
Weight kg (net) 6.5 6.5 11
Interface RS 232

IFB-BA-e-1012 5
KERN IFB 30K5DM IFB 60K10DM IFB 60K10DLM
Readability (d) 5 g / 10 g 10 g / 20 g 10 g / 20 g
Weighing range (max) 15 kg / 30 kg 30 kg / 60 kg 30 kg / 60 kg
Minimum load (Min) 100 g 200 g 200 g
Verification value (e) 5 g / 10 g 10 g / 20 g 10 g / 20 g
Verification class III III III
Reproducibility 5 g / 10 g 10 g / 20 g 10 g / 20 g
Linearity ± 5 g / 10 g ± 10 g / 20 g ± 10 g / 20 g
Recommended
adjustment weight, not
added (class)
30 kg
(M1) 60 kg (M1) 60 kg (M1)
Warm-up time 10 minutes
Stabilization time (typical) 2 s
Weighing unit kg
Auto Off Available options 5, 15 min.
Ambient temperature -10°C – 40°C
Moist environment 0 % - 80 % (non-condensing)
Input voltage 220 V – 240 V, 50 Hz
Electric Supply Power pack secondary voltage 9V, 800mA
Dimensions display unit
(B x D x H) mm 250 x 160 x 58
Weighing surface mm 400 x 300 x 80 400 x 300 x 80 500 x 400 x 80
Weight kg (net) 11 11 18
Interface optional RS232

IFB-BA-e-1012
6
KERN IFB 150K20DM IFB 150K20DLM IFB 300K50DM
Readability (d) 20 g / 50 g 20 g / 50 g 50 g / 100 g
Weighing range (max) 60 kg / 150 kg 60 kg / 150 kg 150 kg / 300 kg
Minimum load (Min) 400 g 400 g 1000 g
Verification value (e) 20 g / 50 g 20 g / 50 g 50 g / 100 g
Verification class III III III
Reproducibility 20 g / 50 g 20 g / 50 g 50 g / 100 g
Linearity ± 20 g / 50 g ± 20 g / 50 g ± 50 g / 100 g
Recommended
adjustment weight, not
added (class)
150 kg
(M1) 150 kg (M1) 300 kg (M1)
Warm-up time 10 minutes
Stabilization time (typical) 2 s
Weighing unit kg
Auto Off Available options 5, 15 min.
Ambient temperature -10°C – 40°C
Moist environment 0 % - 80 % (non-condensing)
Input voltage 220 V – 240 V, 50 Hz
Electric Supply Power pack secondary voltage 9V, 800mA
Dimensions display unit
(B x D x H) mm 250 x 160 x 58
Weighing surface mm 500 x 400 x 80 650 x 500 x 80 650 x 500 x 80
Weight kg (net) 18 24 24
Interface optional RS232

2 Appliance overview
1. Battery status display
2. Keyboard
3. Weight display
4. Tolerance tag, see chpt. 7.6
5. Weighing unit
6. Levelling screw
7. Spirit level (underneath weighing platform)
IFB-BA-e-1012 7

2.1 Keyboard overview
Button Function
Turn on/off
•Zeroing
Navigation key •Confirm entry
Taring
Navigation key At numeric input increase flashing digit
Scroll forward in menu
•Display sum total
Navigation key •Digit selection to the right
•Add weighing value in summation memory
Navigation key •Digit selection to the left
•Calculate weighing data via interface
C •Delete
•Switch-over gross weight net weight
ESC •Back to menu/weighing mode
•Activate animal weighing function
•Activate weighing with tolerance limits
•Delete total added memory
IFB-BA-e-1012
8

2.1.1 Numeric input via navigation keys
Press current setting appears. The first digit is flashing and can be
changed.
If the first digit is not to be changed, press and the second digit will start
flashing. Each time you press , the display unit jumps to the subsequent
digit, returning to the first digit after the last digit has been pressed.
To change the selected (flashing) digit, press repeatedly until the desired
value appears. Then select by using additional digits and change these by using
Finish entry with .
2.2 Overview of displays
Display Significance
Rechargeable battery very low
STABLE Stability display
ZERO Zero display
GROSS Gross weight
NET Net weight
AUTO Automatic add-up enabled
Kg Weighing unit
M+ Adding
LED
+ / / - Indicators for weighing with tolerance limits
IFB-BA-e-1012 9

IFB-BA-e-1012
10
3 Basic Information (General)
3.1 Proper use
The balance you purchased is intended to determine the weighing value of material
to be weighed. It is intended to be used as a “non-automatic balance”, 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 balance for dynamic weighing. 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 balance. (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. Balance may be
damage by this.
Never operate balance in explosive environment. The serial version is not explosion
protected.
The structure of the balance may not be modified. This may lead to incorrect
weighing results, safety-related faults and destruction of the balance.
The balance may only be used according to the described conditions. Other areas of
use must be released by KERN in writing.
3.3 Warranty
Warranty claims shall be voided in case
•Our conditions in the operation manual are ignored
•The appliance is used outside the described uses
•The appliance is modified or opened
•Mechanical damage or damage by media, liquids, natural wear and tear
•The appliance is improperly set up or incorrectly electrically connected
•The measuring system is overloaded
3.4 Monitoring of Test Resources
In the framework of quality assurance the measuring-related properties of the
balance and, if applicable, the testing weight, must be checked regularly. The
responsible user must define a suitable interval as well as type and scope of this test.
Information is available on KERN’s home page (www.kern-sohn.com with regard to
the monitoring of balance test substances and the test weights required for this. In
KERN’s accredited DKD calibration laboratory test weights and balances may be
calibrated (return to the national standard) fast and at moderate cost.

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 Transportation & Storage
5.1 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the
appliance itself when unpacking for possible visible damage.
5.2 Packaging / return transport
Keep all parts of the original packaging for a possibly
required return.
Only use original packaging for returning.
Prior to dispatch disconnect all cables and remove
loose/mobile parts.
Reattach possibly supplied transport securing devices.
Secure all parts such as glass wind screen, weighing
platform, power unit etc. against shifting and damage.
IFB-BA-e-1012 11

IFB-BA-e-1012
12
6 Unpacking and implantation
6.1 Installation Site, Location of Use
The balances are designed in a way that reliable weighing results are achieved in
common conditions of use.
You will work accurately and fast, if you select the right location for your balance.
On the installation site observe the following:
•Place the balance on a firm, level surface;
•Avoid extreme heat as well as temperature fluctuation caused by installing
next to a radiator or in the direct sunlight;
•Protect the balance against direct draughts due to open windows and doors;
•Avoid jarring during weighing;
•Protect the balance against high humidity, vapors and dust;
•Do not expose the balance to strong humidity for extended periods. 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.
•Being of protection type IP 67 as per DIN EN 60529, the weighing scale is
suitable for short-term use in wet conditions.
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/implantation
Take the balance carefully out of the package, remove the plastic cover and
place it in the designated work area.
Scope of delivery / serial accessories:
•Balance, see chpt. 2
•Mains power supply
•Operating instructions

Accurate weighing results require a weighing bridge with perfect horizontal alignment.
During initial installation and after each change of work area it is necessary to level
the weighing bridge.
As the spirit level is underneath the weighing platform it has to be removed.
Level balance with foot screws until the air bubble of the water balance is in the
prescribed circle.
6.3 Mains connection
Power is supplied via the external mains adapter. The stated voltage value must be
the same as the local voltage. Only use original KERN mains adapters. Using other
makes requires consent by KERN.
6.4 Adjustment
As the acceleration value due to gravity is not the same at every location on earth,
the 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 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 balance periodically in
weighing operation.
•Access to menu block “P2 CAL” is locked in verified scales.
Access to menu requires breaking of seal and activation of verification
switch (See chpt 6.5 ).
The instrument will have to be reverified by a bureau of standards and a
new seal attached if a seal was broken before applications subject to
verification can be recommenced.
Please follow verification instructions (See chpt. 6.5).
•The weight to be used depends on the capacity of the scale. Carry out
adjustment as near as possible to the scale’s maximum weight. Info
about test weights can be found on the Internet at: http://www.kern-
sohn.com
•Observe stable environmental conditions. Warm-up time required for
stabilisation.
IFB-BA-e-1012 13

Switch on instrument and press during self-test.
Press , , in turn and the first menu block “PO
CHK“ will appear.
Press repeatedly until “P2 CAL“ appears.
Press and the first menu item “COUNT“ will appear
At verified scales, press first the adjustment switch.
Press repeatedly until “CAL“ appears.
Press .
Wait for stability display, then press . Ensure that there
are no objects on the weighing plate.
The currently set adjustment weight will be displayed.
Change by pressing the navigation keys (See chpt 2.1.1);
select desired setting; currently enabled digit will be flashing.
Acknowledge by .
Carefully place adjusting weight in the centre of the weighing
plate. Wait for stability display, then press .
After successful adjustment the appliance automatically
returns to weighing mode.
•An adjusting error or incorrect adjusting weight will be indicated by the error
message, repeat adjustment procedure.
IFB-BA-e-1012
14

6.5 Verification
General introduction:
According to EU directive 90/384/EEC balances must be 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 Qualification Approval is in existence for verified weighing systems. If a
balance is used where obligation to verify exists as described above, it must officially
verified and re-verified in regular intervals.
Reverification is carried out according to relevant national statutory regulations. The
validity for verification of balances in Germany is e.g. 2 years.
The legal regulation of the country where the balance is used must be observed!
•Verification of the weighing system is invalid without the "seal".
Notes on verified weighing systems
Position for seals and verification switches
1. Self-destructing seal
2. Verification switch
3. Cover verification switch
4. Self-destructing seal
IFB-BA-e-1012 15

7 Operation
7.1 Start-up
Press , and the instrument will carry out a self-test . The instrument is
ready for weighing when a weight display appears.
7.2 Switching Off
Press until the display disappears.
7.3 Zeroing
Resetting to zero corrects the influence of light soiling on the weighing plate.
Resetting range ± 2 % max.
The instrument comprises an automatic zero setting function, however, the
instrument can be reset to zero whenever needed as described below.
Remove load from weighing system
Press , and the zero display as well as the ZERO indicator will appear.
7.4 Simple weighing
Place goods to be weighed on balance.
Wait for stability display STABLE.
Read weighing result.
Overload warning
Overloading exceeding the stated maximum load (max) of the device, minus a
possibly existing tare load, must be strictly avoided. The instrument may be
damaged by overloading.
Exceeding of maximum load is indicated by “----“ as well as a signal sound.
Remove load from weighing system or reduce preload.
IFB-BA-e-1012
16

7.5 Weighing with tare
Deposit weighing vessel. After successful stop check press the button.
The zero display and the indicator NET appear.
The weight of the container is now internally saved.
Weigh the material, the net weight will be indicated.
The weight of the weighing container will be displayed as a minus number after
removing the weighing container.
The tare procedure can be repeated as many times as necessary, for example
with initial weighing of several components for a mix (add-on weighing). The limit
is reached when the total weighing range capacity is full.
Switch between gross weight and net weight by pressing the key.
To delete the tare value, remove load from weighing plate and press .
7.6 Weighing with tolerance range
You may determine an upper and lower limit for weighing with tolerance limits in
order to ensure that the weighed load remains exactly within the fixed tolerance
limits.
During tolerance checks such as dispensing, portioning and sorting, the instrument
will indicate any lower deviation or exceeding of limits with the help of a visual signal
or audio sound.
Acoustic signal:
The audio sound depends on the setting of the menu block “BEEP“.
Options:
•no Acoustic signal turned off
•ok Acoustic signal sounds when load is within tolerance
limits
•ng Acoustic signal sounds when load is beyond tolerance
limits
IFB-BA-e-1012 17

Optical signal:
Three colour pilot lamps indicate whether load is within the two tolerance limits.
The signal lamps provide the following information:
+ Goods to be weighed above tolerance limit Red signal lamp
glowing
Goods to be weighed within tolerance range Green signal lamp
glowing
- Goods to be weighed below tolerance limit Red signal lamp
glowing
Settings for tolerance weighing may be set either by calling up menu block “P0 CHK“
(See chpt. 8) or by applying the faster option of pressing the key combination
Settings
Press and at the same time in weighing mode. 
Press ; the display used for entering the lower limit SET L
appears.
Press ; current setting appears.
Use the navigation keys (See chpt. 2.1.1) for entering the
lower limit, e. g. 1000 kg; the currently active digit will be
flashing.
Confirm input by .
Select SET H using
IFB-BA-e-1012
18

Press , the current setting for the upper limit will be
shown.
Use the navigation keys (See chpt. 2.1.1) to set the upper
limit, e. g. 1100 kg; the currently active digit will be flashing.
Confirm input by .
Select BEEP by .
Press , the current setting for the audio sound will be
shown.
Use (no, ok, ng) to select the desired setting.
Confirm input by .
Press and the weighing system will go into tolerance
weighing mode. From here evaluation takes place whether
the goods to be weighed are within the two tolerance limits.
Weighing with tolerance range
Tare, if using a weighing container.
Put on goods to be weighed, tolerance control is started
•The tolerance control is not active when the weight is under 20d.
•To delete limits enter a value of “00.000 kg“.
IFB-BA-e-1012 19

7.7 Manual totalizing
With this function the individual weighing values are added into the summation
memory by pressing and edited, when an optional printer is connected.
•Menu settings:
„P1 COM“ „MODE“ „PR2““, see chap. 8
•The totalisation function is not active when the weight is under 20d.
Add up:
Place goods to be weighed A.
Wait until the stability display STABLE appears, then press . The weight value
will be saved and a printout received if an optional printer is connected.
Remove the weighed good. More weighed goods can only be added when the
display = zero.
Place goods to be weighed B.
Wait until the stability display appears, then press . The weight value will be
added to the summation memory and possibly printed. The number of weighing
processes followed by the total weight will be shown for 2 sec.
Add more weighed goods as described before.
Please note that the weighing system must be unloaded between the individual
weighing procedures.
This process can be repeated until the capacity of the weighing system is
exhausted.
Display of the saved weighing data:
Press and the number of weighings followed by the total weight will be
shown for 2 sec. To receive a printout, press during this display.
IFB-BA-e-1012
20