KERN & Sohn GmbH
Ziegelei 1
E-Mail: info@kern-sohn.com
Phone: +49-[0]7433- 9933-0
Internet: www.kern-sohn.com
Operating and Installation
Digital weighing transmitter
KERN YKV-01/02
Version 1.1
2019-04
Instructions
GB
D-72336 Balingen
Fax: +49-[0]7433-9933-149
YKV-01-02-BA_IA-e-1911
KERN YKV
Digital weighing transmitter
GB
Version 1.1 2019-04
Operating and installa t ion instructions
Contents
1 Technical data ................................................................................................ 4
2 Declaration of conformity ............................................................................. 5
3 Appliance overview ....................................................................................... 6
4 Basic Information (Gen eral) .......................................................................... 7
4.1 Proper use .................................................................................................................................. 7
4.2 Improper Use .............................................................................................................................. 7
4.3 Warranty ..................................................................................................................................... 7
4.4 Monitoring of Test Resources .................................................................................................... 8
5 Basic Safety Precaut io ns .............................................................................. 8
5.1 Pay attention to the instructions in the Operation Manual.......................................................... 8
5.2 Personnel training ....................................................................................................................... 8
6 Transport and storage ................................................................................... 8
6.1 Testing upon acceptance ........................................................................................................... 8
6.2 Packaging / return transport ....................................................................................................... 8
7 Unpacking and placing .................................................................................. 9
7.1 Installation Site, Location of Use ................................................................................................ 9
7.2 Unpacking and checking ............................................................................................................ 9
7.3 Transport Securing ..................................................................................................................... 9
7.4 Installation Weighing transmitter - Platform.............................................................................. 10
7.4.1 Weighing system design........................................................................................................... 10
7.4.2 How to connect the platform ..................................................................................................... 11
7.5 Connect weighing transmitter to PC ......................................................................................... 12
8 Configuration ............................................................................................... 13
9 Adjustment ................................................................................................... 14
10 Linearization / firs t adjustm ent ................................................................... 15
10.1 Carrying out the linearization .................................................................................................... 16
10.2 Performance of a single point adjustment ................................................................................ 17
11 Configuration using the KERN Balance Connectio n software ................ 18
12 Connection to your system ......................................................................... 20
12.1 USB .......................................................................................................................................... 20
12.2 Bluetooth .................................................................................................................................. 20
12.3 RS232 ....................................................................................................................................... 21
12.4 Ethernet .................................................................................................................................... 22
12.5 WLAN ....................................................................................................................................... 22
13 Carrying out measurements ....................................................................... 24
2 YKV-01-02-BA_IA-e-1911
13.1 Using your own software .......................................................................................................... 24
13.1.1 Request weighing data ......................................................................................................... 24
13.1.2 Zeroing and taring ................................................................................................................ 24
13.2 Using the BalanceConnection software ................................................................................... 24
13.2.1 Functions .............................................................................................................................. 27
YKV-01-02-BA_IA-e-1911 3
1 Technical data
KERN (type) TYKV-01-A TYKV-02-A
Model YKV-01 YKV-02
Net weight (kg) 1.1 1.1
Dimensions of the
housing (B x D x H) mm
Permissible
ambient condition
Housing material Synthetic material
Humidity of air 80 % relative (not condensing)
Input voltage Mains
adapter
Input tension
Device
Interfaces USB-Host/Master
100 x 127 x 28 mm 100 x 127 x 28 mm
- 10° C to +40° C
100 V - 240 V, 50 / 60 Hz
5 V, 500 mA
USB-Host/Master
(Standard)
WLAN/WiFi-Module
(factory option)
RS 232 (standard) RS 232 (standard)
Bluetooth 4.0
(factory option)
(Standard)
WLAN/WiFi-Module
(factory option)
Bluetooth 4.0
(factory option)
- Ethernet (Standard)
4 YKV-01-02-BA_IA-e-1911
2 Declaration of conform ity
The current EC/EU Conformity declaration can be found online in:
www.kern-sohn.com/ce
YKV-01-02-BA_IA-e-1911 5
3 Appliance overview
Example YKV-02-A:
Pos. Description
1 USB 2.0 type B
2 RS232
3 Ethernet
4 Connection to the load cell
6 YKV-01-02-BA_IA-e-1911
4 Basic Information (General)
4.1 Proper use
The digital weighing transmitter acquired by you is used in combination with a
platform 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.
4.2 Impro per Us e
Do not use weighing system (YKV and platform) 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 device.
(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. The weighing
system could be damaged.
Never operate the weighing system in explosive environment. The serial version is
not explosion protected.
Changes to the weighing system's design are not permitted. This may lead to
incorrect weighing results, safety-related faults and destruction of the weighing
system.
The weighing system may only be operated in accordance with the described default
settings. Other areas of use must be released by KERN in writing.
4.3 Warranty
Warranty claims shall be voi ded i n cas e
• 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
YKV-01-02-BA_IA-e-1911 7
4.4 Monitoring of Test Resources
In the framework of quality assurance the measuring-related properties of the
weighing system 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 digital
weighing platforms 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 Pers onnel training
The appliance may only be operated and maintained by trained personnel.
6 T ransport and storage
6.1 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the
appliance itself when unpa c kin g for po s sible visible damage.
6.2 Packaging / return t ransp ort
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.
8 YKV-01-02-BA_IA-e-1911
• Weighing transmitter
in the downloads area on http://www.kern-sohn.com
7 Unpacking and placing
7.1 Installation Site, Location of Use
The weighing system is designed to achieve reliable weighing results under normal
conditions of use.
You will work accurately and fast, if you select the right location for your weighing
system.
On the installation site observe the following:
• Place the weighing system on a firm, le vel sur fa ce;
• Avoid extreme heat as well as temperature fluctuation caused by installing
next to a radiator or in the direct sunlight;
• Protect the weighing system against direct draughts due to open windows and
doors;
• Avoid jarring during weighing;
• Protect the weighing system against high air humi dit y, vapours and dust;
• Do not expose the weighing system 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 weighed items or wei ghing c ontainer.
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.
7.2 Unpacking and checking
Take the weighing transmitter out of the packaging, remove the packaging material
and install at the designated workstation. Check if that there has been no damage
and that all packing items are present.
Scope of delivery / serial accessories:
• Net adapter EU/UK/US
• USB A to USB B cable
• These installation instructions
• Software KERN BalanceConnection
7.3 Transport Securing
Please note: if the YKV is used together with platform with transportation lock, this
transportation lock must be released prior to use.
YKV-01-02-BA_IA-e-1911 9
7.4 Installation Weighing transmitter - Platform
Installation / configuration of a weighing system must be carried out by a well
acquainted specialist with the workings of weighing balances.
7.4.1 Weighing s ystem design
The digital weighing transmitter is suitable for connection to any analogue load cell in
compliance with the required specifications.
The following data must be established before selecting a load cell:
• Weighing balance capacity
This usually corresponds to the heaviest load to be weighed.
• Preload
This corresponds to the total weight of all parts that are to be placed on the
weighing cell such as upper part of pl atf orm , weighing pan etc.
• Total zero s etting range
This is composed of the start-up zero setting range (± 2%) and the zero
setting range available to the user via the ZERO-function (2%). The total
zero setting range equal s there f or e 4 % of the s cale’s capacity.
The addition of w eighi ng s cal e s capa city, preload and the total zer o set ti ng
range give the required capacity for the weighing cell.
To avoid overloading of the weighing cell, include an additional safety
margin.
10 YKV-01-02-BA_IA-e-1911
• For power supply we recommend to connect the YKV to the PC.
the YKV.
7.4.2 How to connect the platfor m
Connection to power supply via USB
Weld the individual w i res of the loa d cell cabl e to the pri nte d cir c ui t boar d.
Example of application:
For this purpose connect the USB coupl ing of the YKV to the PC.
• If another interface is used, power has to be supplied via the
external power pack.
For this purpose connect the power pack to the USB coupling of
Prior to starting the assembly work, disconnect the digital weighing
transmitter from the mains.
Couplings from left to right described as follows:
E+ S+ OUT+ OUT- S- E- Shield
The strain relief of the load cell cable is between 4 mm and 8 mm.
YKV-01-02-BA_IA-e-1911 11
USB
WLAN/WiFi
Bluetooth 4.0
Ethernet
-
Standard
7.5 Connect weighing transmitter to PC
Weighing data can de edited to conne ct ed ne tworks or PCs via the interfaces. In
reverse order, control comm a nd s and dat a in put s may be made via the connected
devices (such as PC).
Every interface has to be configured according to the peripheral device and the
desired function.
For data transfer a transfer software is required. Our optionally available transfer
software Balance Connection SCD 4.0 gives you a lot of possibilities for transfer and
recording.
Available interfaces:
Standard Standard
Factory option Factory option
YKV-01 YKV-02
RS232
Standard Standard
Factory option Factory option
12 YKV-01-02-BA_IA-e-1911
balance
balance
JDC 60.00 kg
JDC A
JDD 0.05 kg
JDD A
JDO 60.45 kg
JDO A
JDA 60.00 kg
JDA A
8 Configuration
Description Sent to
Define maximum load (exp.: 60 kg) and unit
(exp.: kg)
Resolution (decimal digits and readability)
Exp.: 0.05 kg
Determine overload (exp. 60.45 kg):
Define Adjustment weight (Bsp.: 60.00 kg)
Further linearization points can be defined with the JDL command.
• Please observe the sequen ce; the same uni t m ust be u se d for all
parameters.
Answer of
• The configuration can als o be carr ied out u si ng the Bal an c eC on ne c ti on
software. Please refer to the corresponding chapter down below.
YKV-01-02-BA_IA-e-1911 13
Observe stable enviro nment al c on di ti on s. Stabi l i sati on r equi r e s a cert ain
9 Adjustment
As the acceleration value due to gravity is not the same at every location on earth,
every digital weighing pl atfor m mu st be coor d i nate d - in compl i a n ce w i th the
underlying phy sical wei ghi ng pr i n cipl e - 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 accur at e mea suri n g valu es it is also
recommended to adjust the digital weighing platform in weighing operation.
• Prepare the required adjustment weight. The adjustment weight to be
used depends on the capacity of the weighing system. Carry out
adjustment as near as possible to the weighing system’s maximum
weight. Info about test weights can be found on the Internet at:
http://www.kern-sohn.com.
•
warm-up time.
• Make sure that the balance data are input cor r ectly
14 YKV-01-02-BA_IA-e-1911
• A linearization is absolutely necessary after changing the weighing
• After linearization, calibration is recommended.
10 Linearization / first adjustment
The linearity indicates the largest deviation of the weight display of a balance to the
value of the respective test weight for plus and minus over the entire weighing range.
If a linearity deviation is detected during test equipment monitoring, this can be
improved by linearization.
parameters with JDC, JDD, etc.
• For scales with a resolution> 15,000 division steps, it is recommended to
carry out a linearization.
• For scales with a resolution of <15,000 division s, an sin gl e-point
adjustment is recommended. Only with display devices.
• The linearization may only be carried out by a specialist with profound
knowledge in the handling of balances.
• The test weights to be used must be adapted to the specifications of the
balance.
• Observe stable environmental condit ions. A warm-up time for
stabilization is required.
YKV-01-02-BA_IA-e-1911 15
Send the max. capacity of the scale JDC.
Balance sends a confirmat ion.
JDC 60 kg
JDC A
Send the readability of the scale JDD.
Balance sends a confirmat ion.
JDD 0.02 kg
JDD A
Send the max. overload of the scale JDO.
Balance sends a confirmat ion.
JDO 60 kg
JDO A
Optional: Send more linearization points
JDL x (x = 0 to 7)
JDL 0 30 kg
JDL 1 60 kg
JDL A
JDL A
JALZ
JALZ
JALZ A 60 kg
• Put on the indicated load.
• Continue linearization JALL
JALL
JALL B 30 kg
• Put on the indicated load.
• Continue linearization JALL
JALL
JALL A
Save linearization JAS
JAS
JAS A
10.1 Carrying out the linearization
For adjustment connect the weighing transmitter to the PC via the USB-interface as
described in chap. 7.4.
Linearization can be initiated using the commands JALZ, JALL as well as JAS in
the KCP protocol.
Sent to
balance
Received from
balance
Unload the weighing plate
Start linearization
The linearization is thus successfully completed. If errors occur, repeat linearization.
16 YKV-01-02-BA_IA-e-1911
Sending the command to adjust the zero point
upon
JAGZ
JAGZ A
Loading the balance with the adjustment load
Send the command to import the adjustment
The balance sends a confirm ati on JAGL A.
JAGL
JAGL A
Save the adjustment usin g the comm an d JAS.
JAS
JAS A
10.2 Performance of a single point adjustment
For adjustment conne ct the weighing transmitter to the PC via the USB-interface as
described in chap. 7.4.
Adjustment can be initiated using the commands JAGZ, JAGL as well as JAS in the
KCP protocol.
Sent to
balance
Answer of
balance
Unload weighing plate
JAGZ.
The balance sends a confirm ati on JAGZ A
15.00 kg
specifying the adjustment weight to be placed
load JAGL.
Now the process of adjustment is su c ces sf ully completed. Should err or s oc cur,
repeat adjustment.
Observe the sequence :
• JZ – JL – JS
o Before and after changing the weighing parameters, perform a
linearization, only then does the one-point adjustment work.
YKV-01-02-BA_IA-e-1911 17
11 Configuration using the KERN Bal ance Conne c t ion software
The BalanceConnection software (expert mode) includes a dialog for configuring the
device. You can download the BalanceConnection software from the following URL:
http://balanceconnection.kern-sohn.com/dl
You can find the manual at:
http://balanceconnection.kern-sohn.com/manual.pdf
18 YKV-01-02-BA_IA-e-1911
To configure the device with the BalanceConnection software, please follow the
instructions below (according to the instructions of the software):
1) Switch to expert mode.
2) Select the desired device from the list.
3) Connect the correct port to the selected device
4) Start the configuration dialog via the following button:
5) Complete the desired parameters and press the "Apply" button.
YKV-01-02-BA_IA-e-1911 19
KCP (KERN Communications Protocol):
balances and
other appliances, which allows all of the relevant parameters and functions to
be called up and controlled. KERN devices that have KCP can use it to
connect easily to computers, industrial control systems and other digital
systems.
12 Connection to your system
Using and configuration of the digital weighing transmitter are made by the KCP
communication log via the installed interfaces. KCP is described in the interface
specification KCP-ZB (online available). The following sections describe how to
connect the weighing platform to your system using your preferred communications
interface.
KCP is a standardized set of interface commands for KERN
12.1 USB
Connect the device to the host computer using the enclosed USB cable. It will be
recognized as a virtual COM port and will be assigned a corresponding numbered
connection.
Example (Microsoft Windows Device Manager):
In modern devices the USB driver required for the weighing transmitter has already
been pre-installed. If the system is not recognized automatically, you can obtain the
correct driver from th e downloads area at http://www.kern-sohn.com.
12.2 Bluetooth
The weighing transmitter is optionally available with Bluetooth Low Energy (BLE)
and will then be visible to Bluetooth Master devices using its serial number.
To access this, please use an appropriate software programme / app which supports
Bluetooth Low Energy (BLE). Applications exclusively using Bluetooth Classic (BLC)
will not work.
20 YKV-01-02-BA_IA-e-1911
Data bits:
8
12.3 RS232
Use a suitable cable to connect the weighing transmitter to the interface of the
computer. The fault-free operation is ensured either by the corresponding KERNinterface cable (KERN 572-926) or directly via the RS232-interface of the PC.
Enter default values:
Baud rate 9600
Parity none
Stop bits 1
YKV-01-02-BA_IA-e-1911 21
A
Select operating mode "apsta"
B
Enter WLAN-network name and the corresponding password
C
Save settings and restart target software (reboot button)
Should settings have been made on the device, make sure that afterwards the
12.4 Ethernet
In standard configuration the weighing transmitter uses the DHCP log to intrude into
the network.
For inquiry of the configuration allocated via DHCP, as well as to the specific/static
configuration of the IP-address, subnet-mask or the gateway, the KCP-commands
JNEx can be used.
12.5 WLAN
After switching-on without config ur at ion, the YKV cr eates fi rst a WLAN a c cess
point named "AI-Thinker_xxxxxx.
Connect YKV to the computer via this access point.
In a webbrowser enter the IP-address 192.168.4.1 of the YKV. The
configuration website will appear. The stati c IP wi l l be assigned via the KCPcommands.
(s. fig.:)
D
Separate connection to the PC (access point) and disconnect power supply
of the YKV.
power supply to the YKV is disconnected.
Only then the settings will be imported.
Update (reboot-button) and saving (s ave-button) are not sufficient.
22 YKV-01-02-BA_IA-e-1911
E
Invoke the configuration website and c heck the IP-address.
F
(s. fig.:)
• Reconnect YKV to the power supply,
• Restore connection to the PC (access point),
•
G
(s. fig.:)
Close the configuration website, connect the PC to the sele cte d network
Open the target software (e.g. KERN Balance Connection) and enter the
IP-address and port 23.
For inquiry of the configuration allocated via DHCP, as well as to the specific/static
configuration of the IP-address, subnet-mask or the gateway, the KCP-commands
JNWx can be used.
YKV-01-02-BA_IA-e-1911 23
13 Carrying out measurements
13.1 Using your own softwar e
Measurements may be requested using various KCP protocol commands.
13.1.1 Request weighing data
Central commands for the request are:
• „S“: Transmit the next stable value
• „SI“: Transmit the curr ent val ue
• „SIR“: Transmit the current net weighing data continuously
13.1.2 Zeroing and t aring
The device can be zeroed and tared using the following commands:
• „Z“: Zeroing the display on the balance
• „T“: Taring the balance
• „TA“: Setting or requesting the current tare value
13.2 Using the BalanceConnection software
The enclosed "KERN BalanceConnection" software includes an example
configuration for working with the KDP weighing platform. The example configuration
switches the balance to continuous transmission, displays the current weight value
on-screen and includes the most important commands (adjustment, zeroing, taring,
printing).
To activate the example configuration, please select the "KDP" model from the list of
models.
After confirmation the software loads the example configuration and restarts.
You will see the following items (two windows):
24 YKV-01-02-BA_IA-e-1911
1) Main window BalanceConnection:
2) On-screen display window with three areas:
a. Main functions
b. Current measuring value
c. Table listing weight values, which can be requested using "PRINT".
YKV-01-02-BA_IA-e-1911 25
In the example configuration the weighing platform sends data constantly. The
If you only want to keep the current value, then please use the operation "Save
value" to accept the value. In the output method, the package type must be set
Important:
In the standard configuration COM1 is selected as the interface. Please adjust this on
your balance. For access through Ethernet, WLAN or Bluetooth, please enter the
relevant port in the software.
For details on changing the configuration please refer to the instructions for the
BalanceConnectio n sof tware.
weight values would normally all be forwarded to the output methods.
to manual trigger.
26 YKV-01-02-BA_IA-e-1911
13.2.1 Functions
In the example configuration the following functions are pre-configured:
Zeroing (->0<-):
The display on the balance is set to zero, the full weighing range is available.
Taring (TARE):
The current weight value is adopted as the tare value. The new net value is
displayed.
PRE-TARE:
You can define a tare value (please specify in and with the weighing unit).
PRINT:
The current weight displayed on the balance is adopted as a value into the
assigned output methods.
Adjustment (CAL):
Adjustment of the platform is illustrated in the example configuration by a
sequence of commands, which corresponds to the adjustment procedure in the
chapter 8. Please follow the instruction displayed on the screen.
YKV-01-02-BA_IA-e-1911 27
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