KERN PCB 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
[email protected]
Operating instructions
Precision balance
KERN PCB
Type TPCB-A
Version 1.3
2022-08
GB
TPCB_A-BA-e-2213

1 TPCB_A-BA-e-2213
GB
KERN PCB
Version 1.3 2022-08
Operating instructions
Precision balance
Content
1Technical data...................................................................................................... 4
2Declaration of conformity ..................................................................................... 7
3Appliance overview.............................................................................................. 8
3.1 Components.................................................................................................. 8
3.2 Operating elements....................................................................................... 9
3.2.1 Keyboard overview........................................................................................... 9
3.2.2 Numeric entry..................................................................................................10
3.2.3 Overview of displays .......................................................................................10
4Basic Information (General)............................................................................... 11
4.1 Proper use................................................................................................... 11
4.2 Improper Use............................................................................................... 11
4.3 Warranty...................................................................................................... 11
4.4 Monitoring of Test Resources...................................................................... 12
5Basic Safety Precautions................................................................................... 12
5.1 Pay attention to the instructions in the Operation Manual ........................... 12
5.2 Personnel training........................................................................................ 12
6Transport and storage........................................................................................ 12
6.1 Testing upon acceptance ............................................................................ 12
6.2 Packaging / return transport........................................................................ 12
7Unpacking, Installation and Commissioning....................................................... 13
7.1 Installation Site, Location of Use................................................................. 13
7.2 Unpacking and checking ............................................................................. 14
7.3 Assembling, Installation and Levelling......................................................... 14
7.4 Mains connection......................................................................................... 14
7.5 Battery operation (optional) ......................................................................... 15
7.6 Rechargeable battery operation (optional) .................................................. 16
7.6.1 Load rechargeable battery ..............................................................................16
7.7 Connection of peripheral devices ................................................................ 17

TPCB_A-BA-e-2213 2
7.8 Initial Commissioning................................................................................... 17
7.9 Adjustment .................................................................................................. 17
7.9.1 External adjustment <CalExt > ................................................................18
7.9.2 External adjustment with user-defined adjustment weight < caleud >.......19
7.9.3 Gravitational constant adjustment location < graadj >..............................21
7.9.4 Gravitational constant adjustment location < grause >..............................22
8Basic Operation ................................................................................................. 23
8.1 Turn on/off................................................................................................... 23
8.2 Simple weighing .......................................................................................... 23
8.3 Zeroing........................................................................................................ 24
8.4 Taring.......................................................................................................... 24
8.5 Switch-over weighing unit............................................................................ 25
8.6 Underfloor weighing..................................................................................... 26
9Operating concept.............................................................................................. 27
10 Application <Weighing>.................................................................................. 29
10.1 Application-specific settings..................................................................... 29
10.2 Description of individual functions............................................................ 30
10.2.1 Take over the placed weight as PRE-TARE value...........................................30
10.2.2 Enter the known tare weight numerically < PtaremanuAl >................31
10.2.3 Data-Hold function < hold >.............................................................................31
10.2.4 Percent weighing.............................................................................................32
10.2.5 Weighing with multiplication factor...................................................................33
10.2.6 Molar weighing mode......................................................................................34
10.3 Quick change key - .................................................................................. 35
10.3.1 Weighing Units................................................................................................35
10.3.2 Application units..............................................................................................36
11 Application <Counting>................................................................................... 37
11.1 Application-specific settings..................................................................... 37
11.2 Using the application................................................................................ 38
11.2.1 Piece counting.................................................................................................38
11.2.2 Check counting ...............................................................................................40
12 Application <Checkweighing>......................................................................... 43
12.1 Application-specific settings..................................................................... 43
12.2 Using the application................................................................................ 44
12.2.1 Target weighing...............................................................................................44
12.2.2 Checkweighing................................................................................................47
13 Menu............................................................................................................... 49

3 TPCB_A-BA-e-2213
13.1 Navigation in the menu............................................................................. 49
13.2 Application menu...................................................................................... 49
13.3 Setup menu.............................................................................................. 50
13.3.1 Overview < setup>..........................................................................................50
14 Communication with peripheral devices via KUP connection......................... 54
14.1 KERN Communications Protocol (KERN Interface Protocol)................... 55
14.2 Issue functions......................................................................................... 56
14.2.1 Add-up mode < sum >...................................................................................56
14.2.2 Data output after pressing the PRINT button < manual >...........................58
14.2.3 Automatic data output < auto >...................................................................59
14.2.4 Continuous data output < cont >.................................................................59
14.3 Data format .............................................................................................. 60
15 Servicing, maintenance, disposal ................................................................... 61
15.1 Cleaning................................................................................................... 61
15.2 Servicing, maintenance............................................................................ 61
15.3 Disposal ................................................................................................... 61
16 Instant help for troubleshooting....................................................................... 62
17 Error messages .............................................................................................. 63

TPCB_A-BA-e-2213 4
1 Technical data
KERN
PCB 200-3
PCB 300-2
PCB 300-3
Item no./ Type
TPCB 200-3-A
TPCB 300-2-A
TPCB 360-3-A
Readability (d)
0.001 g
0.01 g
0.001 g
Weighing range (max)
200 g
300 g
360 g
Reproducibility
0.001 g
0.01 g
0.001 g
Linearity
±0.005 g
±0.02 g
± 0.005 g
Smallest part weight for
piece counting - under lab
conditions*
2 mg
20 mg
2 mg
Smallest part weight for
piece counting - under
normal conditions**
20 mg
200 mg
20 mg
Adjustment points
50 g; 100 g; 200 g
100 g; 200 g; 300 g
100 g; 200 g; 350 g
Recommended
adjustment weight (not
supplied)
200 g (F1)
300 g (M1)
200 g (F1)
Stabilization time (typical)
3 sec.
Warm-up time
120 min
Weighing Units
kg, g, gn, dwt, tl (Tw), tl (HK), ozt, tl (Singap, Malays), ct, mo, lb, oz
Humidity of air
max. 80% rel. (non-condensing)
Allowable ambient
temperature
5 °C ... + 35 °C
Input voltage Appliance
6V, 1A
Input voltage Mains
adapter
100 V - 240 V AC, 50 Hz
Batteries (option)
4 x 1,5V AA oder 9 V Block
Rechargeable battery
operation (optional)
Operating period 48 h (background illumination OFF)
Operating period 24 h (background illumination ON)
Loading time approx. 8 hrs.
Auto-Off (battery,
rechargeable battery)
selectable off, 30s, 1, 2, 5, 30, 60 min
Dimensions housing
(W x D x H) [mm]
350 x 390 x 120
Weighing pan
Ø 82 mm,
plastic,
conductive lacquered
Ø 105 mm,
stainless steal
Ø 82 mm,
plastic,
conductive lacquered
Net weight (kg)
1
Interfaces
RS-232 (optional), USB device (optional), wi-fi (optional) via KUP
Underfloor weighing
device
yes (hook supplied)

5 TPCB_A-BA-e-2213
KERN
PCB 1000-2
PCB 2000-1
PCB 3000-2
Item no./ Type
TPCB 1200-2-A
TPCB 2000-1-A
TPCB 3600-2-A
Readability (d)
0.01 g
0.1 g
0.01 g
Weighing range (max)
1 200 g
2 000 g
3 600 g
Reproducibility
0.01 g
0.1 g
0.01 g
Linearity
±0.03 g
± 0.2 g
±0.05 g
Smallest part weight for
piece counting - under lab
conditions*
20 mg
200 mg
20 mg
Smallest part weight for
piece counting - under
normal conditions**
200 mg
2 g
200 mg
Adjustment points
300 g; 600 g; 1,2 kg
500 g /1 kg / 2 kg
1 kg; 2 kg; 3,5 kg
Recommended adjusting
weight (not supplied)
1.2 kg (F1)
2 kg (M1)
2 kg (F1)
Warm-up time
120 min
30 min
120 min
Stabilization time (typical)
3 sec.
Weighing Units
kg, g, gn, dwt, tl (Tw), tl (HK), ozt, tl (Singap, Malays), ct, mo, lb, oz
Humidity of air
max. 80% rel. (non-condensing)
Allowable ambient
temperature
5 °C ... + 35 °C
Input voltage Appliance
6V, 1A
Input voltage Mains
adapter
100 V - 240 V AC, 50 Hz
Batteries (option)
4 x 1,5V AA or 9 V block
Rechargeable battery
operation (optional)
Operating period 48 h (background illumination OFF)
Operating period 24 h (background illumination ON)
Loading time approx. 8 hrs.
Auto-Off (battery,
rechargeable battery)
selectable off, 30s, 1, 2, 5, 30, 60 min
Dimensions caisse
(l x L x h) [mm]
350 x 390 x 120
Weighing plate [mm]
130 x 130, stainless steel
Net weight (kg)
1.4
Interfaces
RS-232 (optional), USB device (optional), wi-fi (optional) via KUP
Underfloor weighing
device
yes (hook supplied)

TPCB_A-BA-e-2213 6
KERN
PCB 6000-0
PCB 6000-1
PCB 10000-1
Item no./ Type
TPCB 6000-0-A
TPCB 6K-4-A
TPCB 10K-4-A
Readability (d)
1 g
0.1 g
0.1 g
Weighing range (max)
6 000 g
6 000 g
10 000 g
Reproducibility
1 g
0.1 g
0.1 g
Linearity
±2 g
±0.3 g
± 0.3 g
Smallest part weight for
piece counting - under lab
conditions*
2 g
200 mg
200 mg
Smallest part weight for
piece counting - under
normal conditions**
20 g
2 g
2 g
Adjustment points
1.5 kg; 3 kg; 6 kg
1.5 kg; 3 kg; 6 kg
2/5/10 kg
Recommended adjusting
weight (not supplied)
6 kg (M2)
6 kg (F2)
10 kg (F1)
Warm-up time
30 min
120 min
120 min
Stabilization time (typical)
3 sec.
Weighing Units
kg, g, gn, dwt, tl (Tw), tl (HK), ozt, tl (Singap, Malays), ct, mo, lb, oz
Humidity of air
max. 80% rel. (non-condensing)
Allowable ambient
temperature
5 °C ... + 35 °C
Input voltage Appliance
6V, 1A
Input voltage Mains
adapter
100 V - 240 V AC, 50 Hz
Batteries (option)
4 x 1,5V AA or 9 V block
Rechargeable battery
operation (optional)
Operating period 48 h (background illumination OFF)
Operating period 24 h (background illumination ON)
Loading time approx. 8 hrs.
Auto-Off (battery,
rechargeable battery)
selectable off, 30s, 1, 2, 5, 30, 60 min
Dimensions caisse
(l x L x h) [mm]
350 x 390 x 120
Weighing plate [mm]
150 x 170 stainless steel
Net weight (kg)
1,8
Interfaces
RS-232 (optional), USB device (optional), wi-fi (optional) via KUP
Underfloor weighing
device
yes (hook supplied)

7 TPCB_A-BA-e-2213
* Smallest component weight for part counting - under lab conditions:
➢There are ideal ambient conditions for high-resolution counting
➢The parts to be counted are not scattered
** Smallest component part for part counting –under normal conditions:
➢There are unsteady ambient conditions (draft, vibrations)
➢The parts to be counted are being scattered
2Declaration of conformity
The current EC/EU Conformity declaration can be found online in:
www.kern-sohn.com/ce

TPCB_A-BA-e-2213 8
3 Appliance overview
3.1 Components
Pos.
Designation
Pos
.
Designation
1
Weighing pan
7
Mains adapter connection
2
Windshield
8
KUP connection (KERN Universal Port)
3
Display
9
Footscrews
4
Keyboard
10
Underfloor weighing device
5
Bubble level
11
Transport lock (position depends on model)
6
Connection anti-theft device
(Kensington lock)
12
Battery compartment

9 TPCB_A-BA-e-2213
3.2 Operating elements
3.2.1 Keyboard overview
Button
Name
Function in Operating
mode
Function in Menu
ON/OFF-
button
➢Turn on/off
➢Background illumination
of the display on/off
➢Navigation key 
➢Menu level back
➢Exit menu / back to
weighing mode.
-key
➢Quick change button,
see chap. 10.3
➢Navigation key 
➢Select menu item
PRINT button
➢Calculate weighing data
via interface
➢Navigation key ➔
➢Activate menu item
➢Confirm selection
ZERO key
➢Zeroing
(Zeroing range 2%
maximum)
TARE-button
➢Taring
➢Invoke application menu
(press button long time)
➢Navigation key 
➢Select menu item

TPCB_A-BA-e-2213 10
3.2.2 Numeric entry
Button
Designation
Function
Navigation key ➔
Select cipher
Confirm entry. Press button repeatedly for every
digit. Wait until the numeric input window
extinguishes.
Navigation key 
Reduce flashing cipher (0 –9)
Navigation key 
Increase flashing cipher (0 –9)
3.2.3 Overview of displays
Position
Display
Description
1
Stability display
2
>0<
Zero display
3
Minus display
4
Tolerance marks for check weighing
5
Rechargeable battery charge indicator
6
Units display / Pcs/ %
options g, kg, lb, gn, dwt, oz, ozt
or
Application icon [Pcs] for piece counting
or [%] for determination of percentage
7
WIFI-symbol
8
Data transfer running
9
AP
Autoprint enabled
-
G
Display gross weight value
-
NET
Display net weight value
-

Weighing data can be found in the sum
memory
LO
OK
HI

11 TPCB_A-BA-e-2213
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
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.
4.2 Improper Use
Our balances are non-automatic balances and not provided for use in dynamic
weighing processes. However, the balances can also be used for dynamic weighing
processes after verifying their individual operative range, and here especially the
accuracy requirements of the application.
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 the 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.
4.3 Warranty
Warranty claims shall be voided in case:
•Our conditions in the operation manual are ignored
•The appliance is used beyond the described uses
•The appliance is modified or opened
•Mechanical damage and damage by media, liquids, natural wear and tear
•The appliance is improperly set up or incorrectly electrically connected
•The measuring system is overloaded

TPCB_A-BA-e-2213 12
4.4 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.
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 staff.
6 Transport and storage
6.1 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the
appliance itself when unpacking for possible visible damage.
6.2 Packaging / return transport
Keep all parts of the original packaging for a possibly required return.
Only use original packaging for returning.
Prior to dispatch disconnect all cables and remove loose/mobile parts.
Reattach possibly supplied transport securing devices.
Secure all parts such as the wind screen, the weighing platform, power
unit etc. against shifting and damage.

13 TPCB_A-BA-e-2213
7 Unpacking, Installation 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.
•Do not operate in areas with hazard of explosive material or in potentially
explosive atmospheres due to materials such as gasses, steams, mists or
dusts.
•Keep away chemicals (such as liquids or gasses), which could attack and
damage the balance inside or from outside.
•Keep IP protection of the device.
•In the event of the occurrence of electromagnetic fields, static charges (e.g.,
when weighing / counting plastic parts) and unstable power supply, large
display deviations (incorrect weighing results, as well as damage to the scale)
are possible. In that case, the location must be changed.

TPCB_A-BA-e-2213 14
7.2 Unpacking and checking
Remove device and accessories from packaging, remove packaging material and
install the device at the planned work place. Check if that there has been no damage
and that all items of delivery scope are present.
Scope of delivery / serial accessories:
•Balance, see chap. 3.1
•Mains adapter
•Operating instructions
•Protective hood
•Flush-mounted hook
7.3 Assembling, Installation and Levelling
Remove the transport lock on the underside of the scale.
Install weighing plate and wind shield if necessary.
Ensure that the balance is installed in a level position.
Level balance with foot screws until the air bubble of the water balance is in the
prescribed circle.
Check levelling regularly
7.4 Mains connection
Select a country-specific power plug and insert it in the mains adapter.
Check, whether the voltage acceptance on the scales is set correctly.
Do not connect the scales to the power mains unless the information on
the scales (sticker) matches the local mains voltage.
Only use KERN original mains adapter. Using other makes requires
consent by KERN.
Important:
➢Before starting your weighing balance, check the mains cable for
damage.
➢Ensure that the power unit does not come into contact with liquids.
➢Ensure access to mains plug at all times.

15 TPCB_A-BA-e-2213
7.5 Battery operation (optional)
When the batteries are exhausted, in the display will appear <Lo Bat>.
Rotate the balance carefully in a way that the bottom of the balance is freely
accessible.
Open the battery compartment and exchange the batteries.
Ensure correct polarisation.
Close again the lid.
•To save the battery, in menu (see chap. 13.3.1.) the automatic switch-off
function <Autoff>can be activated.
•If the balance is not used for a longer time, take out the battery and store
it separately. Leaking battery liquid could damage the balance.

TPCB_A-BA-e-2213 16
7.6 Rechargeable battery operation (optional)
ATTENTION
The rechargeable battery and the battery match with each
other. Only use the delivered mains adapter.
Do not use the balance during the loading process.
The rechargeable can only be replaced by the same or by a
type recommended by the manufacturer.
Therechargeablebatteryisnotprotectedagainstallenvironmental
influences. Iftherechargeablebatteryisexposedto certain
environmentalinfluences, itmayset onfire orexplode.Personsmay
be injuredormaterialdamagemayoccur.
Protecttherechargeable batteryagainstfireandheat.
Do notbringtherechargeablebattery in contactwith fluids,chemical
substancesorsalt.
Do notexposetherechargeablebatterytohighpressureor
microwaves.
Under no circumstancestherechargeablebatteriesandthecharging
unitmaybemodified ormanipulated.
Do notuse adefective,damagedordeformed rechargeablebattery.
Do notconnectorshort-circuittheelectricalcontactsofthe
rechargeablebattery withmetallicobjects.
Liquidmaysquirtoutfromadamagedrechargeablebattery.Ifthe
liquidgetsinto contactwith theskinortheeyes,the skinandtheeyes
maybe irritated.
Ensurethecorrectpolarity wheninsertingor changingthe
rechargeablebattery (see instructionsinthebattery compartment)
Therechargeablebatteryoperation isoverridden when themains
adapterisconnected.For weighing inmainsoperation >48hrs.the
rechargeablebatteriesmustberemoved!(Dangerofoverheating).
If the rechargeable battery starts to smell, being hot, changing
the colour or being deformed, it must be immediately unplugged
from mains supply and from the balance if possible.
7.6.1 Load rechargeable battery
The rechargeable battery pack (Option) is charged using the mains cable supplied.
Before the first use, the rechargeable battery package should be charged by
connecting it to the mains power cable for at least 15 hours.
To save the rechargeable battery, in menu (see chap.13.3.1.) the automatic switch-
off function <Autoff> can be activated.
If the capacity of the rechargeable batteries is exhausted, <Lo Bat> appears in the
display. Connect the power cable as soon as possible to load the rechargeable
battery. Charging time until complete recharging is approx. 8 h.

17 TPCB_A-BA-e-2213
7.7 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.
7.8 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,
rechargeable accumulator or battery).
The accuracy of the balance depends on the local acceleration of gravity.
Strictly observe hints in chapter Adjustment.
7.9 Adjustment
As the acceleration value due to gravity is not the same at every location on earth,
each display unit with connected weighing plate 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 weighing system 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 display unit periodically in weighing operation.
•Arrange the required adjustment weight, see chap. 1.
Carry out adjustment as near as possible to the highest load of the balance
(recommended adjustment weight see chap. 1). Weights of different nominal
values or tolerance classes may be used for adjustment but are not optimal
for technical measuring. The accuracy of the adjustment weight must
correspond approximately to or, if possible, be better than, the readability [d]
of the balance. Info about test weights can be found on the Internet at:
http://www.kern-sohn.com
•Observe stable environmental conditions. A warm up time (see chapter 1) is
required for stabilization.
•Ensure that there are no objects on the weighing pan.

TPCB_A-BA-e-2213 18
7.9.1 External adjustment < CalExt >
Press and hold the TARE and ON/OFF buttons
simultaneously to enter the setup menu.
Wait until the first menu item <Cal > is displayed.
Confirm by ➔button, <CalExt > will be displayed.
Confirm by pressing the ➔-button, the first selectable
adjustment weight is displayed.
Use the navigation keys  to select the desired
adjustment weight, see chap. 1 „Adjustment points“ or
„Recommended adjustment weight“ Numerical input, see
chap. 3.2.2
Prepare the required adjustment weight.
Acknowledge selection by ➔-button. <Zero >,<Pt ld>
followed by the weight value of the adjustment weight to be
placed will be displayed.

19 TPCB_A-BA-e-2213
Place the adjustment weight and confirm with ➔-button,
< wait > followed by < > will be displayed.
Once <reMvld > is displayed, remove the adjustment
weight.
After successful adjustment the balance automatically
returns to weighing mode.
In case of an adjustment error (e.g. objects on the weighing
plate) the display will show the error message <wrong >.
Switch off balance and repeat the adjustment process.
7.9.2 External adjustment with user-defined adjustment weight < caleud >
Press and hold the TARE and ON/OFF buttons
simultaneously to enter the setup menu.
Wait until the first menu item <Cal > is displayed.
Confirm by ➔button, <CalExt > will be displayed.
Use the navigation keys to select <caleud >.
Acknowledge by ➔-button. The numeric input window
for the weight value of the adjustment weight appears.
The active digit is flashing.
Provide adjustment weight.
Enter weight value, numeric input see chap. 3.2.2