KERN CPE User manual

KERN & Sohn GmbH www.kern-sohn.com
Ziegelei 1
72336 Balingen-Frommern
Germany
+0049-[0]7433-9933-0
+0049-[0]7433-9933-149
[e-mail]
User manual
Counting scales
KERN CPE
Type TPCE-A
Version 1.0
2021-06
GB
TCPE_A-BA-e-2110

TCPE_A-BA-e-2110 2
GB
KERN CPE
Ver. 1.0 2021-06
User manual
Counting scales
Contents
1Technical specification......................................................................................... 4
2Declaration of Conformity..................................................................................... 5
3Device overview................................................................................................... 6
3.1 Parts.............................................................................................................. 6
3.2 Display........................................................................................................... 7
3.3 Keyboard....................................................................................................... 8
4Basic instructions (general information)............................................................... 9
4.1 Intended use.................................................................................................. 9
4.2 Non-intended use.......................................................................................... 9
4.3 Guarantee ..................................................................................................... 9
4.4 Testing equipment supervision.................................................................... 10
5Basic safety instructions..................................................................................... 10
5.1 Compliance with the instructions included in the user manual .................... 10
5.2 Personnel training........................................................................................ 10
6Transport and storage........................................................................................ 10
6.1 Checking during reception........................................................................... 10
6.2 Packaging / return transport........................................................................ 10
7Unpacking, positioning and start-up................................................................... 11
7.1 Installation place, operation place............................................................... 11
7.2 Unpacking and check.................................................................................. 11
7.3 Integration, setting and leveling................................................................... 12
7.4 Power supply............................................................................................... 13
7.5 Rechargeable battery operation.................................................................. 14
7.5.1 Battery charging.................................................................................... 15
7.6 Connecting peripherals................................................................................ 15
7.7 First start ..................................................................................................... 15
7.8 Adjustment .................................................................................................. 16

3 TCPE_A-BA-e-2110
8Operation........................................................................................................... 17
8.1 Switching on/off........................................................................................... 17
8.2 Zeroing........................................................................................................ 17
8.3 Ordinary weighing........................................................................................ 17
8.4 Weighing with tare....................................................................................... 18
9Counting the number of pieces.......................................................................... 18
9.1 Determination of a single piece average weight by weighing...................... 19
9.2 Introducing the average weight of a single piece as the numerical value.... 20
10 Test weighing.................................................................................................. 21
10.1 Test weighing........................................................................................... 21
10.2 Check counting ........................................................................................ 24
11 Summing......................................................................................................... 27
12 Setup menu .................................................................................................... 28
13 RS-232 interface............................................................................................. 29
13.1 Technical specification............................................................................. 29
13.2 Printer mode / protocol templates (KERN YKB-01N)............................... 30
13.3 Printout protocol (continuous data transmission) ..................................... 30
14 Maintenance, service and disposal................................................................. 31
14.1 Cleaning................................................................................................... 31
14.2 Maintenance and service ......................................................................... 31
14.3 Disposal ................................................................................................... 31
15 Error messages .............................................................................................. 31
16 Help for any minor failures.............................................................................. 32

TCPE_A-BA-e-2110 4
1 Technical specification
KERN CPE 6K-3 CPE 15K-3 CPE 30K-3
Product number / type TCPE 6K-3-A TCPE 15K-3-A TCPE 30K-3-A
Interval (d) 0.2 g 1 g 0.0005 kg
Weighing range (Max)
3000 g
6000 g
15 kg
Reproducibility
2 g
2 g
Linearity ±0,8 g ±3 g ±0,0015 kg
Minimum piece weight
when counting the number of
pieces in laboratory condi-
tions*
100 mg 250 mg 500 mg
Minimum piece weight
when counting the number of
pieces in standard condi-
tions**
1 g 2.5 g 5 g
Adjustment points 2/4/6 kg 5/10/15 kg 10/20/30 kg
Recommended
adjustment weight
(not delivered) 5 kg (F2) 10 kg (F2); 2 kg (F2) 20 kg (F2); 5 kg (F2)
Weight units
g
g
kg
Settling time (standard)
2 s
Heating time 120 min
Air humidity
max. 80%, relative (non-condensing)
Permissible
ambient temperature 0°C to +40°C
Input voltage
of the device
5 V, 1 A
Input voltage of
the power supply 100–240 VAC; 50/60 Hz
Battery (optional) 3.7 V / 4 Ah
Rechargeable
battery operation
operating time 80 h (illumination off)
operating time 50 h (illumination on)
charging time ca. 5 h
housing dimensions [mm] 320 × 340 × 110 (width × depth × height)
Scale plate,
stainless steel [mm] 300 × 230 × 18 300 × 230 × 18
Net weight [kg] 2.9
Interface RS-232
* Minimum piece weight when counting the number of pieces in laboratory conditions:
There are optimum ambient conditions to count pieces with high resolution
No diversification of the counted pieces’ weight
**Minimum piece weight when counting the number of pieces in standard conditions:
There are unsteady ambient conditions (wind gusts, vibrations)
There is diversification of the counted pieces’ weight

5 TCPE_A-BA-e-2110
Dimensions:
2 Declaration of Conformity
The valid Declaration of Conformity EC/UE is available at:
www.kern-sohn.com/ce

TCPE_A-BA-e-2110 6
3 Device overview
3.1 Parts
Item Name
1 Scale plate
2 Display
3 Keyboard
4 RS-232 interface
5 Battery charge indicator
6 Leveler
7 Leveling screw foot
8 Power supply socket

7 TCPE_A-BA-e-2110
3.2 Display
Weight Weight of a single
piece Number of pieces
Battery charge indicator
Symbol Description
Battery charging indicator
Discharged battery
Tolerance symbols for check weighing, see chapter 10.1
Stabilization indicator
ZERO Zero indicator
NET Net weight value indicator
g Weight unit “gram”
kg Weight unit “kilogram”
pcs Unit of the application “Counting the number of pieces”

TCPE_A-BA-e-2110 8
3.3 Keyboard
Button Name Function in the operating
mode Menu function
Numerical buttons –
Deleting –
Decimal point –
M Button Summing
Displaying the “total”
value –
PRINT
button Weight data transfer via the interface
Displaying the configura-
tion menu
(by pressing and holding
the button)
Activating/deactivating
the test weighing mode –
ON/OFF
button Switching on/off –
Button Determination of a single
piece average weight by
weighing
Selection confirmation / re-
turn to the weighing mode
REF but-
ton
Introducing the known
weight of a single piece
in the numerical value –
TARE
button Taring Selecting the menu item
ZERO
button Zeroing Setting change

9 TCPE_A-BA-e-2110
4 Basic instructions (general information)
4.1 Intended use
The scale you bought is intended for weighing the weighed material. It should be con-
sidered a “non-automatic scale”, e.g. the weighed material should be carefully placed
manually on the scale plate center. The weight can be read after it has stabilized.
4.2 Non-intended use
The scale is not intended for dynamic weighing, e.g. for removing or adding small
amounts of the weighed material. The scale’s “stabilizing and compensating” mecha-
nism can result in displaying erroneous weighing results! (Example: slow outflow of the
liquid from the container placed on the scale.)
Do not subjectthe plate to long-term load. This may damage the weighing mechanism.
Avoid any scale impact and overload higher than the stipulated maximum load (Max),
deducting the tare from the existing load. This could damage the scale.
Never operate the scale in explosive atmospheres. The standard version is not explo-
sion-proof.
Never introduce any structural modifications to the scale. This may result in displaying
erroneous weighing results, violating the technical safety conditions, and also in scale
damage.
The scale should always be operated in line with the provided guidelines. Other oper-
ation ranges / areas require a written consent of KERN.
4.3 Guarantee
The warranty expires:
•if you fail to follow our guidelines included in the user manual;
•if you fail to use the device in line with the intended use;
•if you introduce any modifications or open the device;
•if the device gets damaged mechanically or damaged by the utilities, liquids and
ordinary wear and tear;
•if the device is not set correctly or the electrical system is not as required;
•if the weighing mechanism gets overloaded.

TCPE_A-BA-e-2110 10
4.4 Testing equipment supervision
Within the quality assurance system, you must check the technical measurement prop-
erties of the scale and possibly of the available reference weight regularly. To thataim,
the responsible user should define a relevant cycle, as well as the type and scope of
such an inspection. The information on the supervision of the testing equipment, i.e.
scales, and the required reference weights, can be found on the home page of KERN
(www.kern-sohn.com). The reference weights and scales can be calibrated fast and
for a low cost in the KERN calibration laboratory (against the national reference) ap-
proved by DKD (Deutsche Kalibrierdienst).
5 Basic safety instructions
5.1 Compliance with the instructions included in the user manual
Before you set and start the device, read this user manual thoroughly
even if you are familiar with KERN scales.
All language versions contain non-binding translation.
Only the original document in German is binding.
5.2 Personnel training
The device can be operated and maintained solely by trained workers.
6 Transport and storage
6.1 Checking during reception
Immediately after you have received the shipment, please check if it is free from any
visible outer damage. The same applies for the unpacked device.
6.2 Packaging / return transport
Please keep all th
e parts of the original packaging in case you had to
send it back to us.
Always use the original packaging for the return transport.
Before you dispatch the device, disconnect any connected cables as
well as loose/moving parts.
Reinstall any transport locks, if present.

Protect all the parts, e.g. wind breaker, scale plate, power supply etc.
from slipping and damage.

11 TCPE_A-BA-e-2110
7 Unpacking, positioning and start-up
7.1 Installation place, operation place
The scales are designed to ensure reliable weighing results in standard operating con-
ditions.
The choice of a correct scale location ensures its accurate and fast operation.
This is why you should follow the following rules when selecting the installa-
tion place:
•Place the scale on stable, flat surface.
•Avoid extreme temperatures and temperature fluctuations, occurring e.g. when
you place it at the radiator or in a place exposed to direct sun rays.
•Protect the scale from the direct draft present at open windows and doors.
•Avoid impact when weighing.
•Protect the scale from high humidity of air, vapours and dust.
•Do not expose it to long-term heavy moisture. Any forbidden condensation of
the air moisture on thedevice may occur when a cold device is placed in a much
hotter environment. In such circumstances, leave the device not connected to
the mains for 2 hours to adapt to the ambient temperature.
•Avoid static discharge from the weighed material and scale container.
If there are any electromagnetic fields, static discharge and unstable power supply,
high readout deviations (erroneous weighing results) may occur. In such circum-
stances, change the location.
7.2 Unpacking and check
Remove the device and accessories from the packaging, remove the packaging ma-
terial and place the device in the target location. Check if all components included in
the delivery are present and not damaged.
Scope of delivery / standard accessories:
•Scale, see chapter 3.1
•Power supply
•User manual
•Dust cover

TCPE_A-BA-e-2110 12
7.3 Integration, setting and leveling
Remove transport protection.
Install the scale plates as shown in the drawing.
Place the scale on smooth surface.
Level the scale using the leveling feet. The air bubble in the leveler must be pre-
sent in the marked area.
Check leveling at regular intervals.

13 TCPE_A-BA-e-2110
7.4 Power supply
Check if the scale voltage is set correctly. The scale can be connected to
the mains only when the voltage specified on the scale (sticker) and the
local voltage are identical.
Always use the original power supply by KERN. Using any other products
requires KERN consent.
Important information:
Before you start the device, check the power cord for damage.
The power cord must not have any contact with liquids.
The plug must be always readily available.

TCPE_A-BA-e-2110 14
7.5 Rechargeable battery operation
PLEASE
NOTE!
The rechargeable battery and the charger are compatible. Al-
ways use the power supply delivered with the scale.
Do not use the scale when charging.

Always replace the battery with the one of the same type or of
the type recommended by the manufacturer.
The battery is not protected against all the environmental im-
pacts. Exposing the battery to specific environmental condi-
tions may result in its fire or explosion. It may result in serious
injuries or material losses.
Protect the battery from fire and heat.
Do not allowthe battery to have anycontact with liquids, chem-
icals or salts.
Do not expose the battery to high pressure or microwave radi-
ation.
Do not modify any batteries, charger and do not tamper them.
Do not use any faulty, damaged or deformed battery.

Do not connect the electrical contacts of the battery and do not
use any metal items to short circuit them.

The electrolyte may be released by the damaged battery. Any
contactof theelectrolytewiththe skinoreyesmay irritatethem.
When you place or
replace batteries, always pay attention to
the correct polarity (see the information in the battery compart-
ment).

When the power supply is connected, the battery operation
mode is switched off. Always remove the battery for weighing
in the power supply mode longer than 48 h! (Overheating dan-
ger).
If you detect any odour emitted by the battery, its heating, dis-
colouration or deformation, disconnect it immediately from the
power supply and, whenever possible, from the scale.

15 TCPE_A-BA-e-2110
7.5.1 Battery charging
The rechargeable battery is charged using the supplied power cord.
Before first use, charge the battery for at least 5 hours using the power cord.
The battery symbol < > displayed on the screen means that the battery capacity will
soon run down. The device may operate ca. 1 hour longer and then it will be switched
off automatically. When the scale operates further without charging, a blinking <B-
ERR> symbol will be displayed.
Charge the battery using the provided power supply.
When charging, LED indicator at the bottom, to the left of the weight indicator, indicates
the battery charging status.
red: The battery is being charged
green: The battery is fully charged
7.6 Connecting peripherals
Before you connect or disconnect any extra devices (printer, computer) to/from the
data interface, the scale should always be disconnected from the mains.
Use solely accessories and peripherals supplied by KERN with the scale, being per-
fectly compatible with it.
7.7 First start
To get accurate weighing results using electronic scales, ensure the scales achieves
the appropriate operating temperature (see “Heating time”, chapter 1). During theheat-
ing time, the scale must be connected to the power source (the socket, rechargeable
battery or batteries).
The scale accuracy depends on the local standard gravity.
Always follow the guidelines in the “Adjustment” chapter.

TCPE_A-BA-e-2110 16
7.8 Adjustment
As the standard gravity value is not the same in every spot on Earth, every display with
the scale plate connected should be adjusted, in line with the weighing rules resulting
from the laws of physics, to the standard gravity in the scale location (provided the
scale system has not already been subject to factory adjustment in its location). Such
an adjustment process should be carried out during the first start, following every loca-
tion change and also in the case of any ambient temperature fluctuations. To ensure
achieving accurate measurement date, it is also recommended to carry out regular
display adjustment also in the weighing mode.
•Prepare the required adjustment weight, see chapter 1.
Whenever possible, adjust using the adjustment weight with the weight simi-
lar to the maximum load of the scale (the adjustment weight is recom-
mended, see chapter 1). The adjustment may also be carried out using
weights with other nominal values or tolerance classes, but this is not optimal
from the measurement technique perspective. The adjustment weight preci-
sion must correspond to the interval [d] of the scale, though preferably it
should be a bit higher. For information concerning reference weights, see
online at: http://www.kern-sohn.com
•
Ensure stable environmental conditions. The heating time is required for the
stabilization (see chapter 1).
•Ensure there are no objects on the scale plate.
What to do:
Switch the scale on and when the autotest is carried out, press and hold the
button until the <ZERO ONE CAL> is displayed.
Release the button . <----- ONE CAL> and then the blinking symbol of the first
adjustment point will be displayed.
Using the ZERO button, select the required adjustment weight, see chapter 1
“Adjustment points” or “Recommended adjustment weight”.
Place the adjustment weight and confirm by pressing .
Wait until < > is displayed.
Remove the adjustment weight.
Press . After the successful adjustment, the scale will switch to the weighing
mode again automatically.
If there is any adjustment error or if an incorrect adjustment weight is used, the
error message is displayed. Repeat the adjustment process.

17 TCPE_A-BA-e-2110
8 Operation
8.1 Switching on/off
Switching on:
Press the ON/OFF button.
Once the displays is lit, the scale autotest will be carried out.
Wait until the weight is displayed, the scale is ready for use.
Switching off:
Press the ON/OFF button, the display will go off.
8.2 Zeroing
Zeroing corrects the effect of small pollutants on the scale plate.
Remove the load from the scale.
Press ZERO, the zero indications and <ZERO> symbol will be displayed.
8.3 Ordinary weighing
Check the zero indication, whenever required zero by pressing the ZERO button.
Place the weighed material.
Wait until the stabilization indicator is displayed .
Read out the weighing result.
Overload warning
Always avoid any device overload higher than the stipulated maximum
load (Max
), deducting the tare from the existing load. This could damage
the device.
The exceeded maximum load is indicated with --ol--. Reduce the scale
load or reduce the initial load.


TCPE_A-BA-e-2110 18
8.4 Weighing with tare
The empty weight ofany container used for weighing can be tared, pressing the button
which results in displaying the net weight of the weighed material during consecutive
weighing processes.
Place the scale container on the scale plate.
Wait until the stabilization indicator is displayed , and press TARE. The con-
tainer weight is saved in the scale memory. The zero indicator and the “NET”
symbol will be displayed.
“NET” indicates all displayed weight values are net values.
Place the weighed material.
Wait until the stabilization indicator is displayed .
Read out the net weight.
•After the load is removed from the
scale, the tare weight is displayed as a
negative value.
•
To delete the saved tare value, remove the load from the scale plate and
press TARE button.
•Thetaringprocesscanbe repeatedanynumberof times,e.g.when weigh-
ingseveralmixtureingredients(makingupthe weight).The limitisreached
when the complete taring scope is used.
9 Counting the number of pieces
Before it is possible to count pieces using thescale, you should determine the average
weight of an individualpiece (unit weight), theso-called reference value. Todo it,place
the specific number of pieces which the counting the number of pieces will be carried
out for. The scale will determine the total weight which will be divided by the number
of pieces, the so-called reference piece number. Next, based on the calculated mean
weight of an individual piece, the number of pieces will be counted.
•The higher number of the reference pieces, the higher the accuracyof count-
ing the number of pieces.
•For small or highly diverse
pieces, the reference value must be sufficiently
high.
•For the minimum weight of the counted pieces, see the “Technical specifica-
tion” table.
•The function is available starting from weight values above 20 d.
•Whenever required, when adding consecutive pieces with the number lower
than the placed reference load, the reference weight will be recalculated by
the scale. Such a reference value optimisation is indicated by an audible sig-
nal.

19 TCPE_A-BA-e-2110
9.1 Determination of a single piece average weight by weighing
Zero the scale or, whenever required, tare the empty scale container.
Place the known number of individual pieces as a reference load.
Use numerical buttons to enter the number of reference pieces and confirm by
pressing . The “SAMP” symbol will be displayed for a while. The mean weight
of an individual piece will be determined by the scale and then the piece quan-
tity will be displayed.
Remove the reference load. The scale is in the counting mode and counts all
pieces present on the scale plate.
Deleting the mean amount of a single piece:
Press .

TCPE_A-BA-e-2110 20
9.2 Introducing the average weight of a single piece as the numerical value
Zero the scale or, whenever required, tare the empty scale container.
Using numerical buttons, enter the known average weight of a single piece, e.g.
10 g, and confirm by pressing REF.
The scale is in the counting mode and counts all pieces present on the scale
plate.
Deleting the mean amount of a single piece:
Press .