KERN CPB 15K0.5 User manual

GB KERN CPB
Version 1.1 5/2006
Operating Manual
Counting balance
Contents
1Technical data_________________________________________________ 32
2Declaration of conformity _______________________________________ 33
3Device overview _______________________________________________ 34
3.1 Overview of display ______________________________________________ 35
3.1.1 Display weight _______________________________________________________ 35
3.1.2 Display reference weight _______________________________________________ 35
3.1.3 Display quantity ______________________________________________________ 35
3.2 Keyboard overview_______________________________________________ 36
4Basic Information (General)______________________________________ 37
4.1 Proper use______________________________________________________ 37
4.2 Improper Use ___________________________________________________ 37
4.3 Warranty _______________________________________________________ 37
4.4 Monitoring of Test Resources______________________________________ 38
5Basic Safety Precautions________________________________________ 38
5.1 Pay attention to the instructions in the Operation Manual_______________ 38
5.2 Personnel training _______________________________________________ 38
6Transport and storage __________________________________________ 38
6.1 Testing upon acceptance _________________________________________ 38
6.2 Packaging ______________________________________________________ 38
7Unpacking, Setup and Commissioning ____________________________ 39
7.1 Installation Site, Location of Use ___________________________________ 39
7.2 Unpacking ______________________________________________________ 39
7.2.1 Setup ______________________________________________________________ 39
7.2.2 Scope of delivery _____________________________________________________ 40
7.3 Mains connection ________________________________________________ 40
7.4 Battery power supply_____________________________________________ 40
7.5 Connection of peripheral devices___________________________________ 40
7.6 Initial Commissioning ____________________________________________ 40
7.7 Adjustment with external weight ___________________________________ 41
8Weighing _____________________________________________________ 43
8.1 Switch on/off and set zero_________________________________________ 43
8.2 Simple weighing _________________________________________________ 43

CPB-BA-defsi-0611 31
8.3 Weighing with taring _____________________________________________ 44
8.3.1 Determination of the tare weight by weighing________________________________ 44
8.3.2 Numeric entering of tara weight __________________________________________ 45
9Parts counting_________________________________________________ 46
9.1 Determination of the reference weight by weighing ____________________ 46
9.2 Numeric entering of the reference weight ____________________________ 47
9.3 Automatic reference optimization___________________________________ 47
9.4 Tolerance check for pieces counting ________________________________ 48
9.5 Manual total memory _____________________________________________ 48
9.6 Automatic total memory___________________________________________ 49
10 Menu_______________________________________________________ 50
10.1 Navigation in the menu ___________________________________________ 50
10.2 Menu overview __________________________________________________ 52
11 Display background illumination________________________________ 53
12 Data output RS 232 C _________________________________________ 54
12.1 Technical data___________________________________________________ 54
12.2 Pin allocation of the balance output socket (front view) ________________ 54
12.3 Data format _____________________________________________________ 54
13 Service, maintenance, disposal_________________________________ 55
13.1 Cleaning _______________________________________________________ 55
13.2 Service, maintenance_____________________________________________ 55
13.3 Disposal________________________________________________________ 55
14 Instant help _________________________________________________ 56

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32
1 Technical data
KERN CPB 3K0.1 CPB 6K0.2 CPB 15K0.5 CPB 30 K1
Readability (d) 0,1 g 0,2 g 0,5 g 1 g
Weighing range (max) 3 kg 6 kg 15 kg 30 kg
Reproducibility 0,1 g 0,2 g 0,5 g 1 g
Linearity ± 0,4 g ± 0,8 g ± 1,5 g ± 3 g
Stabilization time 2 sec. 2 sec. 2 sec. 2 sec.
Recommended adjusting
weight (not supplied) 3 kg (M1) 5 kg (M1) 10 kg (M1) 20 kg (M1)
Weighing unit g g kg kg
Minimum piece weight 0,05 g 0,1 g 0,25 g 0,5 g
Reference quantity freely selectable
Net weight (kg) 4.1 kg
Permissible ambient condi-
tion -10° C to 40° C
Humidity of air max. 80 % relative (not condensing)
Weighing plate, stainless
steel 225 x 275 mm
Dimensions of the housing
(B x D x H) 315 x 355 x 110 mm
Protection type IP54
Mains connection Mains adaptor 230 V, 50/60 Hz ; 9 V DC balance, 800 mA
Battery Operating time ca. 70 hrs. / Charging time ca. 12 hrs.

CPB-BA-defsi-0611 33
2 Declaration of conformityKERN & Sohn GmbH
D-72322 Balingen-Frommern
Postfach 4052
E-Mail: [email protected]
Tel: 0049-[0]7433- 9933-0
Fax: 0049-[0]7433-9933-149
Internet: www.kern-sohn.de
Declaration of conformity
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 marca CE
Dichiarazione di conformitá per apparecchi contrassegnati con la marcatura CE
English We hereby declare that the product to which this declaration refers conforms with the fol-
lowing standards.
Deutsch Wir erklären hiermit, daß das Produkt, auf das sich diese Erklärung bezieht, mit den nach-
stehenden 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 confor-
me alle norme di seguito citate.
Electronic Scale: KERN CPB
Mark applied EU Directive Standards
89/336/EEC EMC
73/23/EEC Low Voltage
EN 50081-1
EN 50082-1
EN 60950
Date: 27.12.2005 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

CPB-BA-defsi-0611
34
Connection
power adapter
RS 232 interface
Air bubble
3 Device overview
ON/OFF switch
Battery
comp.

CPB-BA-defsi-0611 35
3.1 Overview of display
Weight Reference weight Pieces
0.0 0 0
dddddddddd
3.1.1 Display weight
Here, the weight of your goods is displayed.
The arrows above the symbols show:
Battery very low
NET Net weight
Stability display
aZeroing display
kg Kilogram
3.1.2 Display reference weight
Here, the reference weight of a sample is displayed in [g]. This value is either entered
by user of calculated by balance.
The arrows above the symbols show:
Number of parts placed on balance
too small
PRESET Saved limit value
Reference weight placed on balance
too small
3.1.3 Display quantity
Here, all the parts placed on balance are immediately displayed by number.
The arrows above the symbols show:
M Data in memory

CPB-BA-defsi-0611
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3.2 Keyboard overview
Choice Function
•Number keys
•Delete key
•Addition in total memory
•Call up total memory
•Enter/display limit value for tolerance check
•Call up menu "Display background illumination"
•Output to external device (printer) or PC
•Enter reference weight through weighing
•Numeric entry reference weight
•Function /parameter selection
•Taring key
•Save
•Zeroing key
•Back to weighing mode

CPB-BA-defsi-0611 37
4 Basic Information (General)
4.1 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 mate-
rial 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.
4.2 Improper Use
Do not use balance for dynamic weighings. In the event that small quantities are re-
moved or added to the material to be weighed, incorrect weighing results can be dis-
played 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 balance,
minus a possibly existing tare load, must be strictly avoided. Balance may be dam-
age 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 weigh-
ing 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.
4.3 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 dammage or dammage 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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4.4 Monitoring of Test Resources
In the framework of quality assurance the measuring-related properties of the bal-
ance and, if applicable, the testing weight, must be checked regularly. The responsi-
ble user must define a suitable interval as well as type and scope of this test. Infor-
mation 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.
5 Basic Safety Precautions
5.1 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.
5.2 Personnel training
The appliance may only be operated and maintained by trained personnel.
6 Transport and storage
6.1 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the appli-
ance itself when unpacking for possible visible damage.
6.2 Packaging
Keep all parts of the original packaging in case you need to return the appliance.
Only use original packaging for returning.
Before sending, disconnect all connected cables and loose/movable parts.
Attach possibly existing transport safeguards. Secure all parts, e.g. weighing plate,
power unit etc., to prevent slipping and damage.

CPB-BA-defsi-0611 39
7 Unpacking, Setup and Commissioning
7.1 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.
Therefore, observe the following for the installation site:
•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, vapours and dust;
•Do not expose the device 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.
If electro-magnetic fields or static charge occur, or if the power supply is unstable
major deviations on the display (incorrect weighing results) are possible. In that case,
the location must be changed.
7.2 Unpacking
Carefully remove the balance from the packaging, remove plastic cover and setup
balance at the intended workstation.
7.2.1 Setup
Level balance with foot screws until the air bubble of the water balance is in the pre-
scribed circle.

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7.2.2 Scope of delivery
Serial accessories:
•Balance
•Weighing plate
•Mains power supply
•Protective cover
•Internal battery
•Operating Manual
7.3 Mains connection
Power is supplied via the external mains power supply. The stated voltage value
must be the same as the local voltage. Only use original KERN mains power sup-
plies. Using other makes requires consent by KERN.
7.4 Battery power supply
The optionally supplied battery is charged with the supplied power supply.
Before the first use, the battery should be charged by connecting it to the mains
power supply for at least 15 hours. The operating time of the battery is about. 70h.
Charging time until complete recharging ca. 12h.
AUTO-OFF function after 15 min to protect the battery.
If an arrow shows in the weight display [T]above the battery symbol
the capacity of the battery will soon be exhausted. The balance will be ready to oper-
ate for about another 10 hrs., then it will switch off automatically. Connect the power
adaptor as soon as possible to change the battery.
The LED display below the parts counting window informs you about the charge
status of the battery.
red: Battery is almost discharged
green: Battery is completely discharged
yellow:Battery should be charged over a longer period (over night)
7.5 Connection of peripheral devices
Before connecting or disconnecting of additional devices (printer, PC) to the data in-
terface, always disconnect the balance from the power supply.
With your balance, only use accessories and peripheral devices by KERN, as they
are ideally tuned to your balance.
7.6 Initial Commissioning
A warming up time of 5 minutes after switching on stabilizes the measuring values.
The accuracy of the balance depends on the local acceleration of gravity.
Strictly observe hints in chapter Adjustment.

CPB-BA-defsi-0611 41
7.7 Adjustment with external weight
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 for the first commissioning, after each
change of location as well as in case of fluctuating environment temperature. To re-
ceive accurate measuring values it is also recommended to adjust the balance peri-
odically in weighing operation.
Procedure when adjusting:
Observe stable environmental conditions. A warming up time of ca. 10 minutes is
required for stabilization. Ensure that there are no objects on the weighing plate.
Operation Display
Activate function "[F1 CAL], see chapt. 10
F1 CAL
Ensure that there are no objects on the
weighing plate.
VnLQAD
Zero point will be saved.
SEL15HG
The balance will suggest a weigh-
ing value for adjusting weight.
However, you may enter a value of
your choice via the number keys.
Confirm weighing value
LQAD 15 HG
Carefully place adjusting weight in
the centre of the weighing plate

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Wait until the stability display shows:
Adjustment process is started.
The process of adjustment is completed.
Remove adjusting weight, balance will return
into weighing mode automatically. In case of
an adjustment error or incorrect adjusting
weight the display will show an error mes-
sage; repeat adjustment process.
LQAD 15 HG
SPAn PASS
000000
999999
0.0

CPB-BA-defsi-0611 43
8 Weighing
8.1 Switch on/off and set zero
Operation Display
1. Switch on balance
Press ON/OFF switch and hold briefly (at
the bottom right side of the balance)
The balance will carry out a self-test
As soon as the weight display shows "0"
in all the three display windows your bal-
ance is ready to weigh.
z0
d
NET
a
Weight
2. Zeroing
z0
d
NET
a
Weight
d
The zero display and the arrow above
the „→0←“ symbol are displayed.
8.2 Simple weighing
Operation Display
Place goods onto weighing plate
Read weighing result
d
NET
25z0
a
Weight
If weighing values are stable the arrow
will be displayed above the - symbol.
If the goods are heavier than the weigh-
ing range, the display will show "QL"
(=Overload), and a whistle is sounded.

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8.3 Weighing with taring
The dead weight of any weighing container may be tared away by pressing a button,
so that the following weighings show the net weight of the goods to be weighed.
8.3.1 Determination of the tare weight by weighing
Operation Display
Place empty tare container on the weigh-
ing plate. The total weight of the con-
tainer is displayed.
d
NET
25z0
a
Weight
Reset display to "0":
z0
d
NET
a
d
Weight
The weight of the container is now inter-
nally saved. Zero display and the arrow
above the "NET" symbol are displayed.
Place the goods to be weighed into the
tare container.
Read the weight of the goods on the
display.
d
NET
1757.0
a
d
Weight
The taring process can be repeated any number of times, e.g. when adding several
components for a mixture (adding).
Reset display to "0":
z0
d
NET
a
d
Weight
The total weight of the container is tared
away.

CPB-BA-defsi-0611 45
Add more components into the weighing
container (adding).
Now read off the weight of the added
item to be weighed on the display.
d
NET
1997.0
a
d
Weight
NOTE:
The balance is able to only store one taring value at a time.
When the balance is unloaded the saved taring value is displayed with negative
sign. Remove all items from the weighing plate in order to delete the stored tare
value and subsequently press the TARE key.
The taring process can be repeated any number of times. The limit is reached
when the whole weighing range is exhausted.
8.3.2 Numeric entering of tara weight
Operation Display
Remove all items from the weighing
plate.
z0
d
NET
a
Weight
Enter your tara weight via number keys.
Confirm
d
NET
-25z0
a
d
Weight
The tara weight is displayed as negative
value
Put on tare container & goods to be
weighed The net weight of the goods to be weighed is displayed.
d
NET
1757.0
a
d
Weight

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9 Parts counting
With parts counting you can either count parts into a container or remove parts from
a container. To count a greater number of parts the average weight per part has to
be determined with a small quantity (reference quantity). The larger the reference
quantity, the higher the counting exactness. High reference must be selected for
small parts or parts with considerably different sizes.
9.1 Determination of the reference weight by weighing
Operation Display
Set your balance at zero
z0
d
NET
a
Weight
Tare the weighing container:
z0
d
NET
a
d
Weight
Determine the reference unit:
Place a known number of parts on the
balance as reference weight
If the "Weight" display is stable, enter
the number of parts via number keys.
Confirm within 5 sec:
The reference weight has been deter-
mined
The reference quantity is displayed in the
"Quantity" display
5z0
d
NET
a
Weight
10
d
Piece weight
PRESET
Piece weight
PRESET
5.00001
10
d
Pcs

CPB-BA-defsi-0611 47
Count the items:
Now you can place the parts to be counted onto the weighing plate. All quantity pa-
rameters of your goods to be weighed are displayed:
Weight placed on balance:
5z0
d
NET
a
Weight
Reference weight:
Piece weight
PRESET
5.00001
Quantity placed on balance:
10
Pcs
9.2 Numeric entering of the reference weight
If you know the reference weight/piece you can enter this via number keys.
Determine reference weight:
Enter reference weight via number keys
Confirm within 5 sec:
5.00
Piece weight
PRESET
Count the items:
Now you can place the parts to be counted onto the weighing plate. All quantity pa-
rameters of your goods to be weighed are displayed:
Weight placed on balance:
5z0
d
NET
a
Weight
Reference weight:
Piece weight
PRESET
5.00
Quantity placed on balance:
10
Pcs
9.3 Automatic reference optimization
To optimize the reference weight, automatically add further parts whose number is
smaller than that of the saved reference quantity. An acoustic signal is sounded when
reference optimization is carried out. Automatic reference optimization will be deacti-
vated as soon as the number of added parts exceeds the saved reference quantity.

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9.4 Tolerance check for pieces counting
An acoustic signal is sounded as soon as the number of parts placed on the balance
reaches or exceeds a pre-set limit.
Determine limit value:
Enter limit value via number keys
Confirm within 5 sec:
5.00
Piece weight
PRESET
d
The arrow above the PRESET symbol
shows a saved limit value.
Delete limit value:
Enter limit value "0" and confirm
9.5 Manual total memory
This function allows you to execute several weighing procedure. After that, the total
parts counting and the number of weighing procedures will be displayed.
Activate function „F4 AV QFF“, see chapt.10
1. Weighing:
•Select a reference weight
•If you are using a weighing container
use the TARE key for taring
•Enter the desired quantity for the first
weighing
•Add weighing value into the memory
•Unload your balance
5.00
Piece weight
PRESET
10
Pcs
d
The arrow above the M symbol indicates
a saved value.

CPB-BA-defsi-0611 49
2. Weighing:
•Enter desired quantity for the second weighing
•Add weighing value into the memory
Add and weigh more parts if needed as described above. Please note that the bal-
ance must be unloaded between the individual weighing procedures.
This process can be repeated 99 times or until the weighing range of the balance is
exhausted.
Display of you saved weighing data:
Total weight, number of weighing procedures as well as total parts counting appear
2 sec. If you connect a printer you can also print the data be pressing the PRINT
key.
Total weight placed on
balance:
50z0
d
NET
a
Weight
Number of weighing
procedures:
Piece weight
PRESET
5
Total parts counting placed on
balance:
100
Pcs
d
To delete you saved weighing data:
+
9.6 Automatic total memory
Execution see chapt. 9.5; the individual weighing values are automatically added into
total memory without pressing the M+ key.
Activate function „F4 AV Qn“, see chapt. 10