KERN KFB-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 devices
KERN KFB/KFN-TM
Version 2.4
04/2016
GB
KFB/KFN-TM-BA_IA-e-1624

2 KFB/KFN-TM-BA_IA-e-1624
GB
KERN KFB/KFN-TM
Version 2.404/2016
Operating and installation instructions
Display units
Contents
1Technical data................................................................................................ 4
2Appliance overview ....................................................................................... 5
2.1 Keyboard overview..................................................................................................................... 7
2.1.1 Numerical input via the navigation buttons................................................................................. 8
2.2 Overview of display .................................................................................................................... 9
3Basic Information (General)........................................................................ 10
3.1 Proper use................................................................................................................................ 10
3.2 Improper Use............................................................................................................................ 10
3.3 Warranty................................................................................................................................... 10
3.4 Monitoring of Test Resources .................................................................................................. 11
4Basic Safety Precautions............................................................................ 11
4.1 Pay attention to the instructions in the Operation Manual........................................................ 11
4.2 Personnel training..................................................................................................................... 11
5Transport and storage................................................................................. 11
5.1 Testing upon acceptance ......................................................................................................... 11
5.2 Packaging / return transport..................................................................................................... 11
6Unpacking and placing................................................................................ 12
6.1 Installation Site, Location of Use.............................................................................................. 12
6.2 Unpacking................................................................................................................................. 12
6.3 Scope of delivery / serial accessories:..................................................................................... 12
6.4 Transportation lock (illustration example)................................................................................. 13
6.5 Error message.......................................................................................................................... 13
6.6 Placing...................................................................................................................................... 14
6.7 Mains connection...................................................................................................................... 15
6.8 Storage battery operation (optional)......................................................................................... 15
6.9 Adjustment................................................................................................................................ 16
6.9.1 Verified weighing systems........................................................................................................ 16
6.9.2 Non verifiable weighing systems.............................................................................................. 19
6.10 Linearization ............................................................................................................................. 20
6.10.1 Verified weighing systems:................................................................................................... 20
6.10.2 Non-verified weighing systems ............................................................................................ 21
6.11 Verification................................................................................................................................ 22

KFB/KFN-TM-BA_IA-e-1624 3
7Operation...................................................................................................... 25
7.1 Start-up..................................................................................................................................... 25
7.2 Switching Off ............................................................................................................................ 25
7.3 Zeroing ..................................................................................................................................... 25
7.4 Simple weighing ....................................................................................................................... 25
7.5 Switch-over weighing unit (only not verifiable weighing systems) ........................................... 26
7.6 Weighing with tare.................................................................................................................... 27
7.7 Weighing with tolerance range................................................................................................. 28
7.7.1 Tolerance check for target weight ............................................................................................ 29
7.7.2 Tolerance check for target quantity.......................................................................................... 31
7.8 Manual totalizing....................................................................................................................... 33
7.9 Automatic adding-up................................................................................................................. 35
7.10 Parts counting........................................................................................................................... 36
7.11 Animal weighing ....................................................................................................................... 37
7.12 Lock keyboard.......................................................................................................................... 38
7.13 Display background illumination............................................................................................... 38
7.14 Automatic switch-off function „AUTO OFF“.............................................................................. 39
8Menu ............................................................................................................. 40
8.1 Overview non verifiable weighing systems (contacts of circuit board [K1] not short-circuited) 41
8.2 Overview verified weighing systems (contacts of circuit board [K1] short-circuited by means of
jumper) 44
9Service, maintenance, disposal.................................................................. 47
9.1 Clean ........................................................................................................................................ 47
9.2 Service, maintenance............................................................................................................... 47
9.3 Disposal.................................................................................................................................... 47
9.4 Error messages ........................................................................................................................ 47
10 Data output RS 232C ................................................................................... 49
10.1 Technical data .......................................................................................................................... 49
10.2 Printer mode............................................................................................................................. 49
10.3 Output log (continuous output)................................................................................................. 50
10.4 Remote control instructions...................................................................................................... 50
11 Instant help................................................................................................... 51
12 Installing display unit / weighing bridge.................................................... 52
12.1 Technical data .......................................................................................................................... 52
12.2 Weighing system design........................................................................................................... 52
12.3 How to connect the platform..................................................................................................... 53
12.4 Configure display unit............................................................................................................... 54
12.4.1 Verified weighing systems (contacts of circuit board [K1] short-circuited by means of
jumper) 54
12.4.2 Non verifiable weighing systems (contacts of circuit board [K1] not short-circuited ).......... 60
13 Declaration of Conformity / Test Certificate.............................................. 64

4 KFB/KFN-TM-BA_IA-e-1624
1 Technical data
KERN KFB-TM KFN-TM
Display 5 ½ - digit
Resolution (verified) 6000
Single (Max.) 6.000 e
Dual (Max.) 3.000 e
Resolution (non-verified) 30.000
Weighing ranges 2
Divisions 1,2,5,…10n
Weighing Units kg
Functions Weighing with tolerance range, Totalizing, Animal
weighing
Display LCD 52 mm digits with back lighting
DMS weighing cells 80-100 Ω. Max. 4 item per 350 Ω;
Sensitivity 2-3 mV/V
Range calibration We recommend ≥ 50 % max.
Data output RS232
Electric Supply Input voltage 220 V – 240 V, 50 Hz
Power pack secondary voltage 12V, 500mA
Housing 250 x 160 x 58 266 x 165 x 96
Admissible
ambient temperature 0°C – 40°C (non-verified)
-10°C – 40°C (verified)
Net weight 1.5 kg 2 kg
Rechargeable battery
(optional)
Operating / charge time 35 h / 12 h 90 h / 12 h
RS 232 interface Standard Option
Tripod KERN BFS-07, option
Support base
incl. wall bracket Standard
IP protection - IP 67 as per DIN 60529 (rechargeable battery
operation only)

KFB/KFN-TM-BA_IA-e-1624 5
2 Appliance overview
KFB-TM: Synthetic finish
1. Status of rechargeable battery
2. Keyboard
3. Weight display
4. Tolerance margin, see chap. 7.7
5. Weighing unit
6. RS-232
7. Input connection load cell cable
8. Guide rail support base / stand
9. End stop support base / stand
10. Mains adapter connection
11. Adjustment switch

6 KFB/KFN-TM-BA_IA-e-1624
KFN-TM: Stainless steel finish
1. Status of rechargeable battery
2. Keyboard
3. Weight display
4. For tolerance mark see chap. 7.7
5. Weighing unit
6. Input connection load cell cable
7. Mains adapter connection

KFB/KFN-TM-BA_IA-e-1624 7
2.1 Keyboard overview
Key Function
•Turn on/off
•Zeroing
Navigation button •Confirm entry
•Taring
Navigation key •At numeric input increase flashing digit
•Scroll forward in menu
•Display sum total
Navigation key •Digit selection to the right
•Add weighing value to summation memory
Navigation key •Digit selection to the left
•Calculate weighing data via interface
C •Delete
•Change between gross and net weight
ESC •Back to menu/weighing mode
•Call up animal weighing function
•Call up weighing with tolerance range
•Delete total added memory

8 KFB/KFN-TM-BA_IA-e-1624
2.1.1 Numerical input via the navigation buttons
Press and current setting will be displayed. The first digit will be flashing
and is ready for changing.
If you do not wish to change the first digit, press and the second digit will
start flashing.
Each time you press , the display will move to the subsequent digit, after the
last digit the display will return to the first digit.
To change the selected (flashing) digit, press repeatedly until the desired
value is displayed. Then press to access further digits and change them by
.
Complete your entry by .

KFB/KFN-TM-BA_IA-e-1624 9
2.2 Overview of display
Display Significance
Weighing range 1
Weighing range 2
Battery very low
STABLE Stability display
ZERO Zero indicator
GROSS Gross weight
NET Net weight
AUTO Automatic add-up enabled
Kg Weighing unit
M+ Totalisation
LED
+ / / -
Indicators for weighing with tolerance range

10 KFB/KFN-TM-BA_IA-e-1624
3 Basic Information (General)
3.1 Proper use
The display unit acquired by you is used in combination with a weighing plate 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 display unit for dynamic weighings. In the event that small quantities are
removed or added to the material to be weighed, incorrect weighing results can be
displayed due to the “stability compensation“ 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