KERN KXS-TM User manual

KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: [e-mail]
Phone: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Operating and Installation
Instructions Display Unit
KERN KXS/KXG-TM
Version 2.2
2017-12
GB
KXS/KXG-TM-BA_IA-e-1722

2 KXS/KXG-TM-BA_IA-e-1722
GB
KERN KXS/KXG-TM
Version 2.2 2017-12
Operating and installation instructions
Display unit
Contents
1Technical data ................................................................................................... 5
2Appliance overview........................................................................................... 6
2.1 Keyboard overview .................................................................................................... 7
2.1.1 Models KXS-TM: ................................................................................................................ 7
2.1.2 Models KXG-TM: ............................................................................................................... 8
2.2 Overview of display ...................................................................................................10
3Basic Information (General) ........................................................................... 12
3.1 Proper use ................................................................................................................12
3.2 Improper Use ............................................................................................................12
3.3 Warranty ...................................................................................................................12
3.4 Monitoring of Test Resources ...................................................................................13
4Basic Safety Precautions................................................................................ 13
4.1 Pay attention to the instructions in the Operation Manual .........................................13
4.2 Personnel training .....................................................................................................13
5Transport and storage .................................................................................... 13
5.1 Testing upon acceptance ..........................................................................................13
5.2 Packaging / return transport ......................................................................................13
6Unpacking and placing................................................................................... 14
6.1 Installation Site, Location of Use ...............................................................................14
6.2 Unpacking and placing ..............................................................................................14
6.3 Scope of delivery / serial accessories: ......................................................................14
6.4 Transport Securing ...................................................................................................15
6.5 Placing ......................................................................................................................15
6.6 Mains connection ......................................................................................................15
6.7 Rechargeable battery operation (Factory option) ......................................................15
6.8 Adjustment ................................................................................................................16
6.9 Verification ................................................................................................................16
7Basic Operation............................................................................................... 18
7.1 Start-up .....................................................................................................................18
7.2 Switching Off ............................................................................................................18
7.3 Zeroing .....................................................................................................................18
7.4 Simple weighing ........................................................................................................18
7.5 Switch-over weighing unit .........................................................................................19
7.6 Weighing with tare ....................................................................................................19
7.6.1 Taring ............................................................................................................................... 19
7.6.2 Delete tare ....................................................................................................................... 19
7.6.3 Numerical input of tare (PRE-TARE) ............................................................................... 20
7.7 Gross/Net call-up ......................................................................................................20

KXS/KXG-TM-BA_IA-e-1722 3
8Applications:.................................................................................................... 21
8.1 Parts counting ...........................................................................................................21
8.2 Totalization ...............................................................................................................23
9Menu................................................................................................................. 27
10 Indicator settings (menu block "01 FnC") ................................................. 28
10.1 Backlighting of the display (function "FnC 01") ..........................................................31
10.2 Automatic power cut "Auto power off (function „FnC 02“) ..........................................32
10.3 Weighing with tolerance range (function "FnC 03 „) ..................................................33
10.4 Resetting to factory settings (function "FnC 04 „) ......................................................37
10.5 Automatic zero-adjusting/ stability and response settings (function "FnC 05“) ..........38
10.6 Data Hold functions (function "FnC 06“) ....................................................................40
10.6.1 Animal weighing function ............................................................................................. 41
10.7 Automatic reference optimisation with the unit count (function „FnC 07“) ..................46
10.8 Automatic storage of zero point (function "FnC 10“) ..................................................47
10.9 Function of the F-key (function „FnC 12“) ..................................................................48
10.10 Auto Zero ..............................................................................................................49
11 External adjustment "Unverified weighing systems „ (menu block "02
EC”) 50
12 Settings RS 232 (menu block "03 rS1”)..................................................... 53
12.1 Baud rate (function "rS1 01“) ....................................................................................56
12.2 Parity (function "rS1 02“) ...........................................................................................57
12.3 Output format (function "rS1 03“) ..............................................................................58
12.4 Output format (function „rS1 04“) ..............................................................................60
12.5 Continuous output rate (function „rS1 05“) ................................................................61
12.6 Automatic data output with zero display (function "rS1 06“) ......................................62
12.7Condition for data output (function "rS1 08”) .............................................................63
12.8 6/ 7-digit data format (function "rS1 09”) ...................................................................64
12.9 Set the date/ time (function "rS1 10“) ........................................................................65
13 Instruction mode.......................................................................................... 68
14 Data output format....................................................................................... 70
14.1 7-digit data format (first decimal place not included) .................................................70
14.2 6-digit data format (first decimal place not included) .................................................70
15 Bluetooth (Factory option).......................................................................... 71
16 Servicing, maintenance, disposal .............................................................. 75
16.1 Clean ........................................................................................................................75
16.2 Servicing, maintenance .............................................................................................75
16.3 Disposal ....................................................................................................................75
16.4 Error messages ........................................................................................................75
17 Instant help................................................................................................... 76
18 Installation display appliance/ load cell..................................................... 77
18.1 Weighing system design ...........................................................................................77
18.2 Attach the load cell ...................................................................................................78
18.3 Attach RS232 ...........................................................................................................79

4 KXS/KXG-TM-BA_IA-e-1722
19 Service menu ............................................................................................... 80
19.1 Configure weighing system / menu block ..............................................82
19.1.1 Unverified weighing systems (function „CSP 01”) ....................................................... 83
19.1.2 Verified balancing systems (function "CSP 02“) .......................................................... 87
19.1.3 Set the buffeting point (function „CSP 03“) ................................................................. 91
19.2 Linearization/ menu block .....................................................................93
19.3 Adjustment of "verified weighing systems / menu block " ...................97
19.4 Amend the local gravitation zone/ menu block .................................... 100
19.5 Appliance settings/ menu block ..................................................... 101
19.5.1 Parameter „adjustment to site conditions“ (function „CFn 01”) ................................. 102
19.5.2 Configuration „verified/ unverified“ (function „CFn 02“) ............................................. 105
19.5.3 Resetting to zero when switched on (function "CFn 04“) .......................................... 106
19.5.4 Amend the DATA Hold function of verified weighing system (function „CFn 05“) .... 107
19.5.5 Auto zero (verified weighing systems)/ function "CFn 06“ ........................................ 109
19.5.6 Parts counting on / off „CFn 07“ ................................................................................ 110
20 Declaration of Conformity......................................................................... 111

KXS/KXG-TM-BA_IA-e-1722 5
1 Technical data
KERN KXS-TM KXG-TM
Display 6-digit
Solution verifiable Single (Max.) 10,000 e
Dual (Max.) 5,000 e
Resolution non-verifiable 30,000 d
Verification class III
Weighing ranges Max. 2
Weighing Units g, kg
Divisions 1,2,5,…10, n
Display LCD 55 mm digits with back lighting
DMS weighing cells Max. 8 x 350 Ω
Electric Supply Input voltage 110-230 V AC
Built-in power supply unit
Rechargeable battery
optional
Factory option
6 V, 4.5 Ah
Operating time (backlight on) 40 h
Operating time (backlight off) 80 h
Loading time 12 h
Admissible
ambient temperature -10°C – 40°C
Humidity of air < 85 % relative (not condensing)
Net weight 2500 g 2000 g
Dimensions Width x Depth
x Height,
(mm)
232 x 170 x 80
Interfaces
Factory option
RS232:
KXS-A04
RS485:
KXS-A01
Bluetooth:
KXS-A02
Protection type IP 68 according to DIN 60529

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2 Appliance overview
1
Wireless
2
Status of rechargeable battery
3
Wall bracket
4
Locking screw
5
Display
6
Keyboard
7
Electric Supply
8
RS 232 / RS485 (Factory option)
9
Connection to the load cell

KXS/KXG-TM-BA_IA-e-1722 7
2.1 Keyboard overview
2.1.1 Models KXS-TM:
Button Description Function
ON/OFF button 1. Turn on/off
F-key • Functional button (allocation see chap. 10.1
FNC-03)
BG/ NET key • Gross weight  switch over to net weight
UNIT-key • Weighing unit
TARE button • Taring
• Confirm entry
ZERO key • Zeroing
M+/ PRINT key • Functional button (allocation see chap. 10.1
FNC-02)

8 KXS/KXG-TM-BA_IA-e-1722
2.1.1.1 Navigation keys and their function in the menu
 • Increase flashing digit
• Scroll forward in menu
 • Decrease flashing digit
• Scroll backwards in menu
 • Digit selection to the right
• Take over selected setting
 Digit selection to the left
2.1.2 Models KXG-TM:
Button Description Function
ON/OFF button • Turn on/off
F-key • Functional button (allocation see chap. 10.1
FNC-03)

KXS/KXG-TM-BA_IA-e-1722 9
BG/ NET key • Gross weight  switch over to net weight
UNIT-key • Weighing unit
TARE button • Taring
• Confirm entry
ZERO key • Zeroing
M+/ PRINT key • Functional button (allocation see chap. 10.1
FNC-02)
2.1.2.1 Navigation keys and their function in the menu
 • Increase flashing digit
• Scroll forward in menu
 • Decrease flashing digit
• Scroll backwards in menu
 • Digit selection to the right
• Take over selected setting
 Digit selection to the left

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2.2 Overview of display
HI / OK / LO Indicators for weighing with tolerance range
Kg Current selected unit of weight „kilograms“
Lb Current selected unit of weight „pound“
Pcs Indicator for counting
Zero indicator
Net The displayed weighing value is a net weighing value
Status of rechargeable battery

KXS/KXG-TM-BA_IA-e-1722 11
Non verified weighing systems:
Indicator [

] next to symbol displays:

1 that the weight value is stable
GROSS

2 that the displayed weighing value is a gross weight value
3
that the balance is set to unit counting mode
PRE-
TARE
4
that a PRE-TARE value is stored
HOLD
5
that the indicated weight value is held in the display, until it is
deleted.
M+

6 that data are stored in an accumulative memory
7
That the current selected unit of weight is „oz“.
Verified weighing systems:
Indicator [

] next to symbol displays:

1 that the weight value is stable
GROSS
2
that the displayed weighing value is a gross weight value
3
that the balance is set to unit counting mode
PRE-
TARE

4 that a PRE-TARE value is stored

5 Display of the current weighing range of the connected
platform
6
M+
7
that data are stored in an accumulative memory

12 KXS/KXG-TM-BA_IA-e-1722
3 Basic Information (General)
3.1 Proper use
The display unit acquired by you is used in combination with a load cell and serves to
determine the weighing value of material to be weighed. It is intended to be used as
a “non-automatic weighing system”, i.e. the material to be weighed is manually and
carefully placed in the centre of the weighing plate. As soon as a stable weighing
value is reached the weighing value can be read.
3.2 Improper Use
Do not use weighing system for dynamic weighing. In the event that small quantities
are removed or added to the material to be weighed, incorrect weighing results can
be displayed due to the “stability compensation“ in the display unit. (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 weighing
plate, minus a possibly existing tare load, must be strictly avoided. Both, the weighing
plate and the display unit may be damaged during this process.
Never operate display unit in explosive environment. The serial version is not
explosion protected.
Changes to the display unit's design are not permitted. This may lead to incorrect
weighing results, safety-related faults and destruction of the display unit.
The display unit may only be operated in accordance with the described default
settings. 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

KXS/KXG-TM-BA_IA-e-1722 13
3.4 Monitoring of Test Resources
In the framework of quality assurance the measuring-related properties of the display
unit 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 display units’ test substances and the test weights required for this. In
KERN’s accredited DKD calibration laboratory test weights and display units may be
calibrated (return to the national standard) fast and at moderate cost.
4 Basic Safety Precautions
4.1 Pay attention to the instructions in the Operation Manual
 Carefully read this operation manual before setup and
commissioning, even if you are already familiar with KERN balances.
 All language versions contain a non-binding translation.
The original German is binding.
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
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.

14 KXS/KXG-TM-BA_IA-e-1722
6 Unpacking and placing
6.1 Installation Site, Location of Use
The display units are designed in a way that reliable weighing results are achieved in
common conditions of use.
Precise and fast work is achieved by selecting the right place for your display unit
and your weighing plate.
On the installation site observe the following:
• Place the weighing system 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 display unit and the weighing plate against direct draft from open
windows or doors.
• Avoid jarring during weighing;
• Protect the display unit and the weighing plate against high humidity, vapours
and dust.
• Do not expose the display unit 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 and placing
Take the display unit carefully out of its packaging, remove the plastic jacket and
install it at the designated work space. Mount the display unit in a way that facilitates
operation and where it is easy to see.
6.3 Scope of delivery / serial accessories:
• For display unit, see chapter 2
• Plug for connection to load cell
• Operating manual

KXS/KXG-TM-BA_IA-e-1722 15
6.4 Transport Securing
Remove the transportation safety device at the four marked positions:
Transport Securing
6.5 Placing
Mount the display unit in a way that facilitates operation and where it is easy to see.
In order to raise the display, the display device can be mounted on an
optional stand.
6.6 Mains connection
Power is supplied via the external power supply unit.
Insert the mains plug into the wall socket.
Once connected, the instrument performs a self check. If the zero display
shows the device is ready for use.
6.7 Rechargeable battery operation (Factory option)
Charge the battery for at least 12 hours before initial use.
The battery symbol indicates the current charge level of the batteries. If the symbol
flashes, the capacity of the battery will soon be exhausted. The weighing scale
will remain ready for operation for a few more hours before switching off in order to
save battery. Fully charge the battery pack.

16 KXS/KXG-TM-BA_IA-e-1722
6.8 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.
How to carry out adjustment:
 Unverified weighing systems, see chapter 11
 Verified weighing systems, see chapter 19.3
6.9 Verification
General introduction:
According to EU directive 90/384/EEC or 2009/23EG balances must be officially
verified if they are used as follows (legally controlled area):
a) For commercial transactions if the price of goods is determined by weighing.
b) For the production of medicines in pharmacies as well as for analyses in the
medical and pharmaceutical laboratory.
c) For official purposes
d) For manufacturing final packages
In cases of doubt, please contact your local trade in standard.
Verification notes:
An EU type approval exists for the appliance described in its technical data as
verifiable. If the appliance is used where obligation to verify exists as described
above, it must be verified and re-verified at regular intervals.
Re-verification of an appliance is carried out according to the respective national
regulations. Normally the validity for verification in Germany is e.g. 2 years.
The legal regulation of the country where the balance is used must be observed!
Verification of the device is invalid without the seals.
The seal marks / verification wire attached on verified appliances point out
that the appliance may only be opened and serviced by trained and
authorised specialist staff. If the sealing (paper seal/ verification wire) is
damaged, the verification validity expires. Please observe all national laws
and legal regulations. In Germany a re-verification will be necessary.

KXS/KXG-TM-BA_IA-e-1722 17
Sealing:

18 KXS/KXG-TM-BA_IA-e-1722
7 Basic Operation
7.1 Start-up
 Press on/ off key, the equipment completes a self check. As soon as the weight
display appears, the instrument will be ready to weigh.
7.2 Switching Off
 Press the on/ off key approx. 3 seconds, the display will turn off.
7.3 Zeroing
Resetting to zero corrects the influence of light soiling on the weighing plate.
Manual
 To unload the weighing system
 Press the ZERO button, the zero display and the indicator will appear.
Automatic
 The automatic zero tracking menu, can be switched on or off, function "FNC 13"
see chapter 10.10.
When the balance is cleared the zero point is corrected automatically.
7.4 Simple weighing
 Place goods to be weighed on balance.
 Wait until the indicator  over the stability display appears.
 Read weighing result.

KXS/KXG-TM-BA_IA-e-1722 19
7.5 Switch-over weighing unit
 Press the UNIT-key
The weight gauge changes between „kg“and "g".
7.6 Weighing with tare
After taring no numeric input of a tare weight can follow.
After the numeric input of a tare weight, the system can only be tared if
„tare weight > PRE TARE value“
7.6.1 Taring
 Deposit weighing vessel. Wait for stability display, then press the TARE button
Zero display and indicator net 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.
 The taring process can be repeated any number of times, e.g. when adding
several components for a mixture (adding). The limit is reached when the whole
weighing range is exhausted.
 With the BG/ NET key you can switch between gross weight and net weight, see
chapter 7.7.
7.6.2 Delete tare
 Unload balance and press the TARE key.
The NET indicator turns off, the zero display shows.

20 KXS/KXG-TM-BA_IA-e-1722
7.6.3 Numerical input of tare (PRE-TARE)
The known dead weight of a weighing container can be tared off by entering its
weight as pre-tare deduction in order to ensure the net weight of the goods to be
weighed in subsequent weighings is always displayed.
 Press the TARE- key, the active position flashes.
 Enter the known tare weight, e.g. 2 kg and acknowledge with TARE button.
Numerical input, see chap. 2.1.1.
The entered weight will be stored as tare weight and displayed with negative
sign. The indicator over PRE-TARE will appear.
 Put the filled weighing container on the balance, the net weight will be displayed.
 The tare value remains stored until it is deleted with the TARE key.
7.7 Gross/Net call-up
By repeated pressing of the BG/ NET key you can change between the gross and net
indicator values.
At the indicator „gross weight“ the indicator appearsabove LARGE.
In the „Net weight“ display the indicator appears next to NET.