EC-Konformitätserklärung EC-Declaration of -Conformity
EC- Déclaration de conformité EC-Declaración de Conformidad
EC-Dichiarazione di conformità EC-Conformiteitverklaring
EC- Declaração de conformidade EC- Prohlášení o shode
EC-Deklaracja zgodnościEC-Заявлениеосоответствии
Electronic Scale: KERN CFS
8 CFS/CCS-BA-e-1220
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 balcance”, i.e. the
material to be weighed is manually and carefully placed in the centre of the
weighing pan.. 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 weighings. In the event that small quantities are
removed or added to the material to be weighed, incorrect weighing results can be
displayed due to the “stability compensation“. (Example: Slowly draining fluids from
a container on the balance.)
Do not leave permanent load on the weighing pan. 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
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
CFS/CCS-BA-e-1220 9
Carefully read this operation manual before setup and
commissioning, even if you are already familiar with KERN balances.
All language versions contain a non-binding translation.
The original German is binding.
Keep all parts of the original packaging for a possibly required
return.
Only use original packaging for returning.
Prior to dispatch disconnect all cables and remove loose/mobile
parts.
Reattach possibly supplied transport securing devices.
Secure all parts such as the glass wind screen, the weighing
platform, power unit etc. against shifting and damage.
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
4.2 Personnel training
The appliance may only be operated and maintained by trained personnel.
5 Transport and storage
5.1 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the
appliance itself when unpacking for possible visible damage.
5.2 Packaging / return transport
10 CFS/CCS-BA-e-1220
6 Unpacking, Setup and Commissioning
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.
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.
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/installation
Carefully remove the balance from the packaging, remove plastic cover and setup
balance at the intended workstation.
Level balance with foot screws until the air bubble of the water balance is in the
prescribed circle.
When using as counting system balance and weighing bridge must be levelled.
CFS/CCS-BA-e-1220 11
Ensure that transport guard has been removed
(only existing in 6 kg models)
1
6.3 Transport Securing
To loosen the transport guard screw out transport screw [1] anticlockwise.
For transportation carefully screw-in transport screw clockwise till to the stopper
In factory the counting system KERN CCS is preconfigured in a way that no
more changes will be necessary.
When connecting a weighing bridge (not preconfigured by KERN) the
following must be observed:
Connect weighing bridge with a suitable cable via the second-balance
interface.
Allocation of the interface connection see chapter 16.
Configure weighing bridge, see chapter 14
Adjust balance / weighing bridge, see chapter 7
Here the weight of your goods is displayed in [kg].
6.4.2 Display average piece weight
Here the average reference weight of a sample is displayed in [g]. This value is
either numerically entered by user or calculated by weighing on balance.
18 CFS/CCS-BA-e-1220
The arrows [] above the symbols show:
Tolerance control in counting mode
Tolerance control in weighing mode
+
Goods to be weighed above tolerance limit
TOL
Goods to be weighed within tolerance range
-
Goods to be weighed below tolerance limit
6.4.3 Display quantity
Here the current piece quantity (PCS = pieces) or in totalizing mode the sum
Sum of the placed parts is displayed, see chapter 10
Voltage has dropped below prescribed minimum. Connect mains
adapter to load the rechargeable battery.
green:
Battery is completely discharged
yellow:
Battery very low. Connect mains adapter as soon as possible to load the
rechargeable battery.
6.6 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.
6.7 Rechargeable battery operation (optional)
The rechargeable battery is charged via the delivered power cable.
Before the first use, the rechargeable battery should be charged by connecting it to
the mains power cable for at least 15 hours. The operation time of the rechargeable
battery is approx. 70 hours. When connecting a second balance, the operation time
will be reduced. The charging period for total charge is c. 12 hours
To save the rechargeable battery, in the menu (see chap.12.2) the automatic
switch-off function [„“ „„] can be activated, switch-off time selectable
after 0, 3, 5, 15, 30 minutes.
If an arrow appears on the weight display above the battery symbol or
"bat lo" when turning on the balance, this is an indication that the capacity of the
rechargeable battery will soon be exhausted. The balance will be ready to operate
for about another 10 hrs., then it will switch off automatically. Connect the power
cable as soon as possible to load the rechargeable battery.
The LED display informs you during loading about the loading status of the
rechargeable battery.
6.8 Connection of peripheral devices
Before connecting or disconnecting of additional devices (printer, PC) to the data
interface, 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.
6.9 Initial Commissioning
In order to obtain exact results with the electronic balances, your balance must
have reached the operating temperature (see warming up time chap. 1).
During this warming up time the balance must be connected to the power supply
(mains, accumulator or battery).
The accuracy of the balance depends on the local acceleration of gravity.
Strictly observe hints in chapter Adjustment.
24 CFS/CCS-BA-e-1220
Information about test weights you will find in the internet under
http://www.kern-sohn.com
In order to avoid errors at the piece quantity determination, both balances
must be adjusted with the same acceleration due to gravity.
In case of non-compliance counting errors will result!
Operation
Display
Switch-on balance and during the selftest press
.
Use the numeric keys to enter password:
Input the standard password „0000“
Confirm input by .
When using as counting system, the bulk material
balance as well as the reference balance must be
adjusted. The adjustment process must be carried
out on both balances.
Select bulk material or reference balance via .
The appeared [] displays the current balance.
Acknowledge with .
7 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 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.
Procedure when adjusting:
Observe stable environmental conditions. A warming up time (see chapter 1) is
required for stabilization. Ensure that there are no objects on the weighing pan.
select the weighing unit [kg or lb], which shall be
used for adjustment. The appeared [] displays the
current weighing unit.
Acknowledge with .
Ensure that there are no objects on the weighing
pan. After successful standstill control press the
button.
The weight value of the adjustment weight appears.
Acknowledge with .
Place the adjusting weight carefully in the centre of
the weighing plate and press to confirm.
or
Enter the desired value of the adjustment weight
using numeric keyboard and acknowledge with
.
In order to achieve high-quality weighing results in
the sense of the measuring technology, it is
recommended to select the nominal value as high
as possible.
We recommend 80 % max.
Place the adjusting weight carefully in the centre of
the weighing plate and press to confirm.
After the adjustment the balance will carry out a
self-test. Remove adjusting weight during selftest,
balance will return into weighing mode
automatically.
In case of an adjustment error or incorrect adjusting
weight the display will show an error message
(), repeat adjustment process.
26 CFS/CCS-BA-e-1220
Operation
Display
Switch-on balance and during the selftest press .
Use the numeric keys to enter password:
Enter sandard password „0000“
Confirm input by .
When using as counting system, the bulk material
balance as well as the reference balance must be
adjusted. The adjustment process must be carried out
on both balances.
With select reference balance („LoCAL“). The
appeared [] displays the current balance.
Acknowledge with .
If necessary, at balance zero display using select
the weighing unit [kg or lb], which shall be used for
adjustment. The appeared [] displays the current
weighing unit.
Acknowledge with .
Ensure that there are no objects on the weighing pan.
After successful standstill control press the button.
Place the required adjusting weight carefully in the
centre of the weighing plate and press to confirm.
After the adjustment the balance will carry out a self-test.
Remove adjusting weight during selftest, balance will
return into weighing mode automatically.
In case of an adjustment error or incorrect adjusting
weight the display will show an error message
(), repeat adjustment process.
7.2 Adjustment reference balance CFS 50K-3 models
CFS/CCS-BA-e-1220 27
Operation
Display
Switch-on balance and during the selftest press .
Use the number keys to enter password:
standard password „0000“
Confirm input by .
Use to select bulk material scales („remote“).
The appeared [] displays the current balance.
Acknowledge with .
If necessary, at balance zero display using
select the weighing unit [kg or lb], which shall be used
for adjustment. The appeared [] displays the current
weighing unit.
Acknowledge with .
Ensure that there are no objects on the weighing pan.
After successful standstill control press the button.
Enter value of the necessary adjustment weight using
numeric keyboard and acknowledge with .
In order to achieve high-quality weighing results in the
sense of the measuring technology, it is recommended
to select the nominal value as high as possible.
We recommend 80 % max.
Place the required adjusting weight carefully in the
centre of the weighing plate and press to confirm.
After the adjustment the balance will carry out a self-test.
Remove adjusting weight during selftest, balance will
return into weighing mode automatically.
In case of an adjustment error or incorrect adjusting
weight the display will show an error message
(), repeat adjustment process.
Switch-on balance and during the selftest press .
Use the numeric keys to enter password:
Default password "0000"
Confirm input by .
Use to select bulk material scales („ Remote“).
The appeared [] displays the current balance.
Acknowledge with .
If necessary, at balance zero display using select
the weighing unit [kg or lb], which shall be used for
adjustment. The appeared [] displays the current
weighing unit.
Acknowledge with .
Ensure that there are no objects on the weighing pan.
After successful standstill control press the button.
Enter value of the necessary adjustment weight using
numeric keyboard and acknowledge with .
In order to achieve high-quality weighing results in the
sense of the measuring technology, it is recommended
to select the nominal value as high as possible.
We recommend 80 % max.
Place the required adjusting weight carefully in the
centre of the weighing plate and press to confirm.
After the adjustment the balance will carry out a self-test.
Remove adjusting weight during selftest, balance will
return into weighing mode automatically.
In case of an adjustment error or incorrect adjusting
weight the display will show an error message
(), repeat adjustment process.
7.4 Adjustment bulk material scales CFS 50K-3 models
Not pre-configured by KERN
CFS/CCS-BA-e-1220 29
Operation
Display
Switch-on balance and during the selftest press
.
With the numerical keys input the password „ 9999“:
Confirm with .
„tECH LoCAL“ is displayed, should it not be
displayed, with select „tECH LoCAL“.
Acknowledge with .
The appeared [] displays the current balance.
8 Linearisation
Linearity shows the greatest deviation of a weight display on the scale to the value
of the respective test weight according to plus and minus over the entire weighing
range.
If linearity deviation is discovered during a testing instrument control, you can
improve this by means of linearization.
Carrying out linearization is restricted to specialist staff possessing well
acquainted with the workings of weighing scales.
The test weights to be used must be adapted to the weighing scale’s
specifications; see chapter 3.4 “testing instruments control”.
Observe stable environmental conditions. Stabilisation requires a certain
warm-up time.
After successful linearisation you will have to carry out calibration;
select the weighing unit [kg or lb], which shall be
used for linearisation. The appeared [] displays
the current weighing unit.
Acknowledge with .
Ensure that there are no objects on the weighing
pan. After successful standstill control press the
button.
The weighing value of the first weight will be
displayed.
Place weight 1 carefully in the centre of the
weighing plate, wait for the stability display and
confirm by .
(example)
The weighing value of the second weight will be
displayed.
Remove weight 1
Place weight 2 carefully in the centre of the
weighing plate, wait for the stability display and
confirm by .
(example)
After the adjustment the balance will carry out a
self-test. Remove adjusting weight during selftest,
balance will return into weighing mode
automatically.
In case of fault or a wrong weight an error message
() will appear, then repeat the
linearization procedure.
Max
Display
Weight 1
Weight
Display
Weight 2
Weight
6 kg
„A 2 kg“
2 kg
„A 6 kg“
6 kg
15 kg
„A 5 kg“
5 kg
„A 15 kg“
15 kg
30 kg
„A 10 kg“
10 kg
„A 30 kg“
30 kg
8.1.1 Table Linearization points
CFS/CCS-BA-e-1220 31
Operation
Display
Switch-on balance and during the selftest press
.
With the numerical keys enter the password „
9999“:
Confirm input with .
„tECH LoCAL“ is displayed, should it not be
displayed, with select „tECH LoCAL“.
Acknowledge with .
The appeared [] displays the current balance.
If necessary, at balance zero display using
select the weighing unit [kg or lb], which shall be
used for adjustment. The appeared [] displays the
current weighing unit.
Acknowledge with .
Ensure that there are no objects on the weighing
pan. After successful standstill control press the
button.
„LoAd 1“ will be displayed
15 kg adjustment weight placed carefully in the
centre of the weighing plate, wait for stability display
and confirm with .
„LoAd 2“ will be displayed,
30 kg adjustment weight placed carefully in the
centre of the weighing plate, wait for stability display
and confirm with .
8.2 Linearisation CFS 50K-3 models
32 CFS/CCS-BA-e-1220
„LoAd 3“ will be displayed
50 kg adjustment weight placed carefully in the
centre of the weighing plate, wait for stability display
and confirm with .
After the adjustment the balance will carry out a self-
test. Remove adjusting weight during selftest,
balance will return into weighing mode automatically.
In case of fault or a wrong weight an error message
() will appear, then repeat the
linearization procedure.
to switch-on actuate forward the switch-on/switch-out on the right lower side of
the balance. The balance will carry out a self-test As soon as the weight display
appears, the balance is ready for weighing.
To switch off press the on/off switch on the right bottom side of the balance at
the back in the CFS 50K-3 models also press forwards.
9.2 Zeroing
Resetting to zero corrects the influence of light soiling on the weighing plate. The
resetting range of the balance was adjusted to ± 2% max. by factory.
Further adjustments are possible in the menu, see chapter 13.
When using as counting system the zeroing range of both balances can be set in
the menu, see chapter 13.
Manual
Unload the balance
Press the ZERO button, the balance begins to reset to zero.
The [] symbol over a appears.
Automatic
In the menu the automatic zero point correction can be switched off or the amount
can be changed, see chapter 13.
9.3 Switch over balance/weighing bridge
For piece counting a weighing bridge can be connected via the second balance
interface. In the counting system KERN CCS the quantity counting is made on the
bulk material balance KERN KFP. The reference balance KERN CFS permits due
to its high resolution a very precise determination of the average piece weight.
The second balance can be operated in the same manner like the first balance.
34 CFS/CCS-BA-e-1220
(1) Reference balance KERN
CFS
(2) Bulk material scales
Example: KERN KFP
(Counting system CCS)
(1) Reference balance KERN
CFS
(2) Bulk material scales
Example: KERN KFP
(Counting system CCS)
By pressing the display changes from one to the other balance.
In the display appears or .
The tare value will be rounded up according to the readability of the balance,
e.g. at a balance 60 kg max/5 g readability the input value of 103 g will be
displayed as -105 g.
9.4 Weighing with tare
A tare value can be entered for the reference as well as for the bulk material
balance. Before setting a tare values select active balance, s. chap. 9.3.
9.4.1 Taring
Deposit weighing vessel. After successful stop check press the TARE button.
The zero display and the symbol [] above NET will appear.
The weight of the container is now internally saved.
Weigh the material, the net weight will be indicated.
After removing the weighing container, the weight of the weighing container
appears as negative display.
To delete the tare value, remove load from weighing pan and press the TARE-
key.
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.
9.4.2 Numeric entering of tare weight
Unload and reset to zero the balance
Input known tare weight numerically with decimal point and press key TARE.
The entered weight will be stored as tare weight and displayed with negative
sign. The [] symbol over NET appears.
Put the filled weighing container on the balance, the net weight will be
displayed.
The tare value remains stored until it will be deleted by TARE.
36 CFS/CCS-BA-e-1220
Preparing:
When using as counting system select using the balance, on which will be
totalized. The appeared [] displays the current balance.
When totalizing in counting mode set the average piece weight.
(see chap. 10.1 or 10.2)
If necessary, tare the empty balance container.
Menu settings:
„F1 off“ „ACC“ „ON“ and „F2 Prt“ „P mode“ „Print“ „AuOFF“
(see chap. 13.2)
When using as counting system there can be totalized on the reference as
well as on the bulk material balance.
Before the totalizing process select the active balance, see chap. 9.3.
10 Totalization
The balance can totalize weight values or piece quantities.
When using in the counting system, no matter, if the weighed goods are on the
reference or on the bulk material balance.
With this function the individual weighing values are added into the summation
memory by pressing and edited, when an optional printer is connected.
CFS/CCS-BA-e-1220 37
Add up:
Place weighing goods A.
Wait until the stability display appears, then press . The weight value or the
number of items are stored and printed out.
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 or the
number of items are added in the summation memory and printed out. Total
weight, number of weighing procedures as well as total parts counting appear 2
sec.
Add more weighed goods as described before. Please note that the balance
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 the saved weighing data:
Press , the total weight, number of weighing procedures as well as total
number of items are displayed.
Total weight placed on
balance:
Number of weighing
procedures:
Total number of pieces:
Delete weighing data:
Press , the total weight, number of weighing procedures as well as total
number of items are displayed. During this display press . The data in the
summation memory are deleted.
38 CFS/CCS-BA-e-1220
10.1.2 Manual Adding CFS 50K-3 models
With this function the individual weighing values are added into the summation
memory by pressing and edited, when an optional printer is connected.
Add up:
Place weighing goods A.
Wait until the stability display appears, then press . The weight value or the
number of items are stored and printed out.
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 or the
number of items are added in the summation memory and printed out. Total
weight, number of weighing procedures as well as total parts counting appear 2
sec.
Add more weighed goods as described before.
Please note that the balance 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.
This operation can be repeated until 999999 or 199999 is shown on the display
CFS/CCS-BA-e-1220 39
Display of the saved weighing data:
Press , the total weight, number of weighing procedures as well as total
number of items are displayed.
Total weight placed on
balance:
Number of weighing
procedures:
(example)
Total number of pieces
Delete weighing data:
Press , the total weight, number of weighing procedures as well as total
number of items are displayed. During this display press . The data in the
summation memory are deleted.
40 CFS/CCS-BA-e-1220
1
2
3
4
5
6
7
8
Printout example:
1
LOCAL/REMOTE SCALE
Active balance, see chap. 9.3.
2
ID
User identification number, see chapter 13.2
3
NET
Currently placed net weight
4
U. W.
Average piece weight (Unit weight)
5
PCS
Currently placed number of pieces (Pieces)
6
TW
Placed total weight (Total weight)
7
TPC
Total number of pieces (Total pieces)
8
NO
Number weighing processes
LOCAL SCALE
ID: 123ABC
0.9997 kg NET
10 g U.W.
100 PCS
TOTAL
_ _ _ _ _ _ _ _ _ _ _ _
4.400 kg TW
80 TPC
4 NO
CFS/CCS-BA-e-1220 41
Menu settings:
„F1 off“„ACC“ „ON“ and „F2 Prt“ „P mode“ „Print“ „AuON“,
(see chap. 13.2)
When using as counting system there can be totalized on the reference as
well as on the bulk material balance.
Before the totalizing process select the active balance, see chap. 9.3.
When using as counting system there can be totalized on the reference as
well as on the bulk material balance.
Before the totalizing process select the active balance, see chap. 9.3.
Add up:
Place weighing goods A.
After the standstill control sounds a signal tone. Unload the weighing good, the
weighing value is added into the summation memory and printed out.
Place goods to be weighed B.
After the standstill control sounds a signal tone. Unload the weighing good, the
weighing value is added into the summation memory and printed out.
Add more weighed goods as described before. Please note that the balance
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 and deletion of weighing data as well as print example (see chap.
10.1.1 and/or 10.1.2 (CFS 50K-3)
10.2 Automatic adding-up
With this function the individual weighing values are automatically added into the
summation memory when the balance is unloaded without pressing and edited,
when an optional printer is connected.
The average piece weight can only be determined by stable weighing
values.
If weighing values are under zero, the piece counter display shows a
negative number of items.
The precision of the average unit weight can be increased at any time
while units are being counter by inputting the displayed number of units
and confirming by or (in CFS 50K-3 models). After the reference
optimization sounds a signal tone. As the additional pieces increase the
base for the calculation, the reference also becomes more exact.
11 Counting
During piece counting parts can either be counted into a container or out of 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.
CFS/CCS-BA-e-1220 43
Set reference
Reset balance to zero or tare the empty weighing container if necessary.
Place on the weighing plate a known number (e.g. 10 items) of individual pieces
as a reference.
Wait for the stability display, than enter the number of individual items via the
numeric keypad.
Confirm within 5 sec by pressing .
The balance determines the average piece weight.
Count the items
Tare if necessary, place weighing good and read off the number of items.
When an optional printer is connected, the displayed value can be edited by
pressing (menu settings „P mode“ „Print“ „AuOFF“, chap. 13.2).
11.1 Determination of the average piece weight by weighing
If at the reference determination the placed weight or the placed piece number is
too small, in the display of the average piece weight the triangle symbol will appear
over [] or [].
To optimize the calculated average piece weight automatically, add further parts
whose number is smaller than that of the first reference determination. After the
reference optimization sounds a signal tone. For each reference optimization the
average piece weight is newly calculated. As the additional pieces increase the
base for the calculation, the reference also becomes more exact.
By pressing or (CFS 50K-3 models) recalculation can be avoided and
thus the reference weight locked.
Automatic reference optimization will be deactivated as soon as the number of
added parts exceeds the saved reference quantity.
46 CFS/CCS-BA-e-1220
(Display example)
Bulk material balance e.g. KERN
KFP
Reference balance KERN CFS
Here pieces of huge quantities will
be counted.
Due to its high resolution it is useful
for accurate determination of the
average piece weight.
Big parts (max > 3kg) are counted
on the weighing bridge.
Smallest parts (max < 3kg) are
counted on the precise KERN CFS.
If in the determination of the
average piece weight no such
high resolution is asked for as that
of the KERN CFS, the reference
formation can also be made in the
bulk material balance.
In order to avoid errors at the piece number determination, both balances
must be adjusted with the same acceleration due to gravity (see chap. 7). In
case of non-compliance counting errors will result!
11.4 Counting with counting system
Counting with bulk material balance:
1. On the reference balance KERN CFS set average piece weight, see chap. 11.1.
or chap. 11.2.
2. Switch over balance with (s. chap. 9.3)
3. Put empty vessel on the weighing plate of the bulk material balance KERN KFP
and tare.
4. Fill counted quantity in the vessel on the bulk material balance. The piece
number is shown in the display.
CFS/CCS-BA-e-1220 47
Operation
Display
Press , the active tolerance weighing mode is
indicated.
If necessary select with or (CFS 50K-3
models) „Tolerance control weighing mode“
[ ].
Press the key TARE, which shows the currently set
upper threshold.
Using numeric keyboard enter desired value or
delete using .
Press the key TARE which shows the currently set
lower threshold.
Using numeric keyboard enter desired value or
delete using .
12 Weighing to a certain target weight /target quantity and
tolerance control
The balance allows weighing of goods to a certain target weight (net weight) or
target piece number within defined tolerances. With this function one can also
check if the weighing good is within a defined tolerance range. Tolerance control is
possible in weighing or target mode.
Reaching the target value is indicated by an acoustic (if activated in menu) and an
optic signal (tolerance mark ).
12.1 Tolerance control in weighing mode
48 CFS/CCS-BA-e-1220
Press , tolerance control is started. The symbol over appears.
Place the weighing goods and with help of the tolerance mark check if the net
weight of the weighed goods is under, within or over the specified tolerance.
Display of tolerance mark , if weighing goods are under the specified tolerance:
Display of tolerance mark , if weighing goods within the specified tolerance:
Display of tolerance mark , if weighing goods above the specified tolerance:
The information if the goods to be weighed are within the tolerance limits, can
additionally be given by an acoustic signal (menu item „„ see chap. 13.2)
Press , tolerance control is started. The symbol over appears.
Place the weighing goods and with help of the tolerance mark check if the net
weight of the weighed goods is under, within or over the specified tolerance.
Display of tolerance mark , if weighing goods are under the specified tolerance:
Display of tolerance mark , if weighing goods within the specified tolerance:
Display of tolerance mark , if weighing goods above the specified tolerance:
Modelle CFS 50K-3 models:
50 CFS/CCS-BA-e-1220
The information if the goods to be weighed are within the tolerance limits, can
additionally be given by an acoustic signal (menu item „„ see chap. 13.2)
For tolerance control, also only one limit value can be set.
If both limit values are deleted, the tolerance control is deactivated.
Operation
Display
Press , the active tolerance weighing mode is
indicated.
If necessary select with . or (CFS 50K-3
models) „Tolerance control counting mode“
[ ].
Press , the currently set upper limit value is
displayed.
Using numeric keyboard enter desired value e.g. 50
items or delete using .
Press , the currently set lower limit value is
displayed.
Using numeric keyboard enter desired value e.g. 40
items or delete using .
12.2 Tolerance control in counting mode
CFS/CCS-BA-e-1220 51
Press , tolerance control is started. The symbol over appears.
Determine the average piece weight (see chap. 11.1 or 11.2), place the weighing
goods and check using the tolerance mark , if the number of the placed pieces
is under, within or above the specified tolerance.
Display of tolerance mark , if weighing goods are under the specified tolerance
Display of tolerance mark , if weighing goods within the specified tolerance
Display of tolerance mark , if weighing goods above the specified tolerance:
The information if the goods to be weighed are within the tolerance limits, can
additionally be given by an acoustic signal (menu item „„ see chap. 13.2)
For tolerance control, also only one limit value can be set.
If both limit values are deleted, the tolerance control is deactivated.
Press , tolerance control is started. The symbol over appears.
Determine the average piece weight (see chap. 11.1 or 11.2), place the weighing
goods and check using the tolerance mark , if the number of the placed pieces
is under, within or above the specified tolerance.
Display of tolerance mark , if weighing goods are under the specified tolerance
Display of tolerance mark , if weighing goods within the specified tolerance
Display of tolerance mark , if weighing goods above the specified tolerance:
CFS 50K-3 models:
CFS/CCS-BA-e-1220 53
The information if the goods to be weighed are within the tolerance limits, can
additionally be given by an acoustic signal (menu item „„ see chap. 13.2)
For tolerance control, also only one limit value can be set.
If both limit values are deleted, the tolerance control is deactivated.
Operation
Windows
If necessary set balance to zero using
.
Tare, as required.
If it’s used as counting system, observe if bulk material or counting balance shall
be tared. Select using bulk material or reference balance accordingly by .
The appeared [] displays the current balance.
Or place the weighing container and tare with (see chap. 9.4.1) or enter tare
value numerically (see chapter 9.4.2).
Tare values can only be saved when they are situated in the admitted taring
range (factory setting > 2 % max).
At values < 2 % max, reset balance with .
12.2.1 Delete limit values:
When entering upper and lower threshold, press key and confirm with .
12.3 Store data
The balance has over 100 indirect memories and 5 direct memories (only CFS
50K-3 models) for frequently used tare values, average unit weights and additional
texts. These data can be accessed by calling up the corresponding number of a
certain article.
If used as a counting system select reference balance using .
Determine the average piece weight or by weighing (see chap. 11.1) or enter via
numeric keyboard (see chap. 11.2).
Input memory location, for example, PLU 27
press
Via numeric keys "2" and "7" enter memory
location "27".
Press , the currently stored additional text
will appear. The first digit is flashing.
Delete additional text with if necessary.
Enter the additional text as follows (max. 12
characters, e.g. "KERN 1234 AB").
For input of numbers, actuate shortly the numeric button
For input of letters press the numeric button and keep it pressed until the desired letter is
displayed. The characters according to keyboard assignation run through.
CFS/CCS-BA-e-1220 55
1
- / \ 2
A B C
3
D E F
4
G H I
5
J K L
6
M N O
7
P Q R S
8
T U V
9
W X Y Z
0
_ [ ]
_ = Space
Overview data input / data output:
Use to move number selection to the left, the respective active position flashes.
Use to move the number selection to the right, the respective active position flashes.
Confirm input by . The data are stored under the entered PLU-number; the data can
be called-up at any time by calling the respective PLU-number.
56 CFS/CCS-BA-e-1220
Operation
Windows
If necessary set balance to zero using
.
Tare, as required.
If it’s used as counting system, observe if bulk material or counting balance shall
be tared. Select bulk material or reference balance accordingly by .
The appeared [] displays the current balance.
Or place the weighing container and tare with (see chap. 9.4.1) or enter tare
value numerically (see chapter 9.4.2).
Tare values can only be saved when they are situated in the admitted taring
range (factory setting > 2 % max).
At values < 2 % max, reset balance with .
If used as a counting system select reference balance using .
Determine the average piece weight or by weighing (see chap. 11.1) or enter via
numeric keyboard (see chap. 11.2).
Press button for approx. 3 seconds.
Via numeric keys "2" and "7" enter memory
location "27".
Press , the currently stored additional
text will appear. The first digit is flashing.
Delete additional text with if
necessary.
Enter the additional text as follows (max.
12 characters, e.g. "KERN 1234 AB").
CFS 50K-3 models:
Buttons ~ :
CFS/CCS-BA-e-1220 57
For input of numbers, actuate shortly the numeric button
For input of letters press the numeric button and keep it pressed until the desired
letter is displayed. The characters according to keyboard assignation run through.
1
- / \
2
A B C
3
D E F
4
G H I
5
J K L
6
M N O
7
P Q R S
8
T U V
9
W X Y Z
0
_ [ ]
_ = Space
Overview data input / data output:
Confirm input by .
The data are stored under the entered PLU-number; data can be called-up at any
time by calling the respective PLU-number (see chap. 12.3.2) .
The stored unit weight is displayed.
58 CFS/CCS-BA-e-1220
Operation
Windows
When using as counting system select
using the balance, on which the tare
value is stored. The appeared [] displays
the current balance.
Press
Via numeric keys "2" and "7" enter memory
location "27".
Press anew, the memory location
and the stored additional text are displayed
for 1 s. If the data shall be displayed longer
time, keep pressed.
The display changes into the counting
mode, the stored tare value e.g. 100 g and
the average piece weight e.g. 10g /pce. are
displayed.
Shows the current user identification number,
max. 6 digits
Shows the current balance identification number,
max. 6 digits
Details
s.Chap. 14
password-protected
Menu block
Main menu
Menu item
Submenu
Available
Settings
Explanation
Signal tone switched off
Signal tone on, if weighing value
within tolerance limits
Signal tone on, if weighing value
outside tolerance limits
Display background illumination
on
Background illumination switches
on automatically when loaded or a
button is pressed
Display background illumination
off
Auto-off function, balance will
switch off automatically after the
set time.
Selectable 0/3/5/15/30 minutes.
CFS 50K-3 models:
66 CFS/CCS-BA-e-1220
Data output of stable weighing
values after pressing
Automatic data output of stable
weighing values after unloading
the balance
Continuous data output of all
weighing data, (totalizing
deactivated)
Continuous data output only
weight value.
Baud rate 600
Baud rate 1200
Baud rate 2400
Baud rate 4800
Baud rate 9600
8 bits, no parity
7 bits, even parity
7 bits, odd parity
Standard printer setting
Not documented
Shows the current user identification number,
max. 6 digits
Shows the current balance identification number,
max. 6 digits
Details
s.Chap. 14
password-protected
CFS/CCS-BA-e-1220 67
Changes should only be carried out by trained specialized personnel.
Navigation in menu see chap. 13.1
Supply voltage:
5 VDC
Max. signal voltage
0-20 mV
Zeroing range
0-5 mv
Sensitivity
> 0.02 μv
Resistance parameter
87 O Min., 4 x 350 Ω load cell
Connection
4 poles
Max. cable length
6 meter
Connection plug
9 pin d-subminiature bushing
14 Configuration bulk material balance / technical parameters
In factory the balance KERN CFS or the counting system KERN CCS are
preconfigured in a way that normally no more changes will be necessary.
But if there are special conditions of use or if as bulk material balance an other
weighing bridge (not preconfigured by KERN) is connected, in the menu block
"" the required settings can be made.
Technical data
68 CFS/CCS-BA-e-1220
Call up menu
Switch-on balance and during the selftest press .
The first menu block is displayed.
Press repeatedly or (in CFS 50K-3 models) press
again until is displayed.
Confirm with TARE. The request to enter the password
appears.
Or as standard password enter four times zero "0000" or the
stored password (input see parameter ). Any other
password can be overwritten with "9999".
Confirm with TARE
Use to select the balance which should be configured
(bulk material/reference balance).
The appeared [] displays the current balance.
Confirm with TARE.
Use UNIT to select the weighing unit [kg or lb], where the
adjustment shall be made.
The appeared [] displays the current weighing unit.
Confirm with TARE , the first menu item is displayed.
Menu settings:
CFS/CCS-BA-e-1220 69
Navigation in the menu
With help of , the individual menu items can be selected
one after the other.
Confirm selected menu item by pressing . The current
setting will be displayed.
Switch into the available settings using .
Either save by pressing or cancel by pressing .
Parameter selection
Display internal resolution
Balance capacity.
Settings only possible on the bulk material balance.
Press , the currently set position of the decimal dot is
displayed.
Select desired setting with and acknowledge by .
The currently set capacity is displayed.
For changes delete display using and enter the desired
value via the numeric keyboard. Confirm input by .
The currently set readability is displayed, for changes see step
3 "Readability".
Readability
Display at selection
reference balance
Press , the currently set readability is displayed.
When using as counting system, the weighing bridge must be connected with a
suitable cable via the second-balance interface.
16 RS 232C interface
The balance is typically equipped with a RS 232C interface. The weighing data can
be output depending on the setting in the menu either automatically or by pressing
(or in CFS 50K-3) via the interface.
This data exchange is asynchronous using ASCII - Code.
The following conditions must be met to provide successful communication
between the weighing balance and the printer.
Use a suitable cable to connect the weighing balance to the interface of the
printer. Faultless operation requires an adequate KERN interface cable.
Communication parameters (baud rate, bits and parity) of balance and
printer must match. Detailed description of the interface parameters see
chap. 13.2, Menu block "".
Add and print weighing data in the summation memory
MR
Call-up data from memory
MC
Delete memory
U123.456
Save the average piece weight 123.456 [g] or [lb]
S123
Input number of pieces e.g. 123 pieces
SL
Switch over to reference balance
SR
Switch over to bulk material scales
\L
Selection reference or bulk material balance
\I
User identification number
\S
Balance identification number
\N
Net weight
\G
Gross weight
\U
Average piece weight
T
Tare value
\P
Counting
\C
Total number of pieces
\W
Total weight
\M
Number weighing processes
\B
Insert space line
16.3 Remote control instructions
All inputs finish with <CR><LF> (carriage return / line feed).
At wrong inputs the command will be preceded by "ER", e.g. order "NN<CR><LF>",
error message "ER NN<CR><LF>".
16.3.1 Control commands
16.3.2 Printing commands
78 CFS/CCS-BA-e-1220
17 Service, maintenance, disposal
17.1 Clean
Before cleaning, disconnect the appliance from the operating voltage.
Please do not use aggressive cleaning agents (solvents or similar agents), but a
cloth dampened with mild soap suds. Take care that the device is not penetrated by
fluids and polish it with a dry soft cloth.
Loose residue sample/powder can be removed carefully with a brush or manual
vacuum cleaner.
Spilled weighing goods must be removed immediately.
17.2 Service, maintenance
The appliance may only be opened by trained service technicians who are
authorized by KERN.
Before opening, disconnect from power supply.
17.3 Disposal
Disposal of packaging and appliance must be carried out by operator according to
valid national or regional law of the location where the appliance is used.
CFS/CCS-BA-e-1220 79
Fault
Possible cause
The displayed weight does
not glow.
The balance is not switched on.
The mains supply connection has been interrupted
(mains cable not plugged in/faulty).
Power supply interrupted.
(Rechargeable) batteries are inserted incorrectly or
empty
No (rechargeable) batteries inserted.
The displayed weight is
permanently changing
Draught/air movement
Table/floor vibrations
Weighing pan has contact with other objects.
Electromagnetic fields / static charging (choose
different location/switch off interfering device if
possible)
The weighing result is
obviously incorrect
The display of the balance is not at zero
Adjustment is no longer correct.
Great fluctuations in temperature.
Warm-up time was ignored.
Electromagnetic fields / static charging (choose
different location/switch off interfering device if
possible)
18 Instant help
In case of an error in the program process, briefly turn off the balance and
disconnect from power supply. The weighing process must then be restarted from
the beginning.
80 CFS/CCS-BA-e-1220
Error message
Description
Possible causes
Zeroing range exceeded
due to switching-on balance