KERN & Sohn GmbH
Ziegelei 1
E-Mail: info@kern-sohn.com
Phone: +49-[0]7433- 9933-0
Internet: www.kern-sohn.com
Operating manual
Electronic Crane Scales
Logbook
Regular maintenance and care
KERN HFC
Version 1.1
01/2015
GB
D-72336 Balingen
Fax: +49-[0]7433-9933-149
HFC-BA-e-1511
KERN HFC
Electronic Suspended balance
GB
Version 1.1 01/2015
Operating instructions / logbook
Contents
1. Technical data _________________________________________________ 4
1.1 Dimensions __________________________________________________________ 6
2. General Safety Instructions ______________________________________ 9
2.1 Duties of the owner-operator ___________________________________________ 9
2.2 Organizational measures ______________________________________________ 9
2.3 Environmental conditions ______________________________________________ 9
2.4 Pay attention to the instructions in the Operation Manual __________________ 10
2.5 Proper use __________________________________________________________ 10
2.6 Improper Use _______________________________________________________ 10
2.7 Warranty ___________________________________________________________ 10
2.8 Safe working ________________________________________________________ 11
2.9 Monitoring of Test Resources _________________________________________ 11
2.10 Testing upon acceptance _____________________________________________ 11
2.11 Initial Commissioning _________________________________________________ 11
2.12 Shutdown and storage ________________________________________________ 11
3. Appliance overview ____________________________________________ 12
3.1 Overview of display __________________________________________________ 13
3.2 Keyboard overview ___________________________________________________ 14
3.3 Label _______________________________________________________________ 15
4. Commissioning _______________________________________________ 16
4.1 Unpacking __________________________________________________________ 16
4.2 Scope of delivery ____________________________________________________ 16
4.3 Checking the original dimensions ______________________________________ 17
4.4 Battery / rechargeable battery operation ________________________________ 17
4.6 Suspending the balance ______________________________________________ 20
2 HFC-BA-e-1511
5. Operation ____________________________________________________ 21
5.1 Safety instructions ___________________________________________________ 21
5.2 Loading the suspended balance _______________________________________ 22
5.3 Turn on/off __________________________________________________________ 25
5.4 Set balance to zero __________________________________________________ 25
5.5 Taring ______________________________________________________________ 26
5.6 Weighing ___________________________________________________________ 26
5.7 Switch-over weighing unit _____________________________________________ 27
5.8 Hold weighing value (Data-HOLD function) ______________________________ 27
5.9 Peak value function __________________________________________________ 28
5.10 Weighing with tolerance range _________________________________________ 28
5.11 Totalization _________________________________________________________ 31
5.12 Gross / net invocation ________________________________________________ 32
5.13 Display background illumination _______________________________________ 33
5.14 Automatic shutdown fu ncti on __________________________________________ 34
6. Menu ________________________________________________________ 35
6.1 Navigation in the menu: _______________________________________________ 35
6.2 Overview: ___________________________________________________________ 36
7. Adjustment / linearization _______________________________________ 38
7.1 Adjustment __________________________________________________________ 38
7.2 Linearization ________________________________________________________ 41
8. Cleaning, Maintenance and Disposal ______________________________ 43
8.1 Cleaning and Disposal ________________________________________________ 43
8.2 Regular maintenance and care ________________________________________ 44
8.3 Checklist „regular maintenance“, (see chapter 8.2) _______________________ 45
9. Enclosure ____________________________________________________ 47
9.1 Checklist „Enhanced maintenance“ (General revision) ____________________ 47
HFC-BA-e-1511 3
1. Technical data
KERN HFC 1T-4 HFC 3T-3
Readability (d) 0.5 kg 1 kg
Weighing range (max) 1000 kg 3000 kg
Taring range (subtractive) 999.5 kg 2999 kg
Reproducibility 0.5 kg 1 kg
Linearity ± 1 kg ± 2 kg
Recommended adjustment
weight, not added (class)
Stabilization time 2 s
Warm-up time 10 min
Units kg, lb, N
Auto off 10 min
Allowable ambient
temperature
Ambient humidity (max ) 80 %
Input Voltage
Battery
Rechargeable battery NiMH
1000 kg (M3) 3000 kg (M3)
5…+35 °C
Power supply unit 100 – 240 V, 50 / 60 Hz
Device 9 V, 800 mA
3 x 1.5 V AA
Service life (background illumination OFF) 40 h
Service life (background illumination OFF) 30 h
Loading time 12 h
Display Digit height 2.3 cm
Housing material Steel
Net weight 2500 g
Rechargeable battery NiMH, 7.2V, 1200mA
Remote control (standard
equipment)
Remote control
Input Voltage
4 HFC-BA-e-1511
Service life (background lighting on) 25 h
Service life (background illumination OFF) 35 h
Loading time 8 h
Mains adapter: 100 – 240 V, 50 / 60 Hz
The appliance: 12 V, 500 mA
KERN HFC 5T-3 HFC 10T-3
Readability (d) 2 kg 5 kg
Weighing range (max) 5000 kg 10000 kg
Taring range (subtractive) 4998 kg 9995 kg
Reproducibility 2 kg 5 kg
Linearity ± 4 kg ± 10 kg
Recommended adjustment
weight, not added (class)
Stabilization time 2 s
Warm-up time 10 min
Units kg, lb, N
Auto off 10 min
Allowable ambient
temperature
Ambient humidity (max ) 80 %
Input Voltage
Battery
Rechargeable battery NiMH
3000 kg (M3) 10000 kg (M3)
5…+35 °C
Power supply unit 100 – 240 V, 50 / 60 Hz
Device 9 V, 800 mA
3 x 1.5 V AA
Service life (background illumination OFF) 40 h
Service life (background illumination OFF) 30 h
Loading time 12 h
Display Digit height 2.3 cm
Housing material Steel
Net weight 4400 g 5500 g
Rechargeable battery NiMH, 7.2V, 1200mA
Remote control (standard
equipment)
Remote control
Input Voltage
HFC-BA-e-1511 5
Service life (background lighting on) 25 h
Service life (background illumination OFF) 35 h
Loading time 8 h
Mains adapter: 100 – 240 V, 50 / 60 Hz
Appliance: 12 V, 500 mA
1.1 Dimensions
Balance 0.6 t / 1 t
Balance 3 t
6 HFC-BA-e-1511
Balance 5 t
Balance 10 t
HFC-BA-e-1511 7
Holding strap terminal
8 HFC-BA-e-1511
2. General Safety Instructions
2.1 Duties of the owner-operator Follow national accident prevention regulations and all operator health a nd
safety at work and operating regulations.
Observe all safety regulations of the crane manufacturer.
The balance may only be used for the proposed purpose. Any type of use which
is not specified in these operating instructions, will be considered as improper
use. The customer is solely responsible for material damage and injury of persons
resulting from an improper use, Messrs. KERN & Sohn will not be liable under
any circumstance.
Messrs . KERN & Sohn cannot be held liable, if the suspended balance is
modified or used improperly and if damage is resulting from such use.
Carry out service and repair to suspended balance (see chap. 8.3), crane and
lifting tackle at regular intervals.
Log the test result and keep it in the logbook.
2.2 Organizational measures
Only trained and instructed staff may operate the balance.
Make sure that the operating instructions are kept nearby the operation site of the
suspended balance.
Assembly, commissioning and maintenance should only be carried out by trained
specialists.
Weight-bearing components must not be replaced
2.3 Environmental conditions
Never operate suspended balance in spaces exposed to explosion hazards. The
serial version is not explosion protected.
Operate the suspended balance only under environmental conditions as specified
in these operating instructions (especially in chapter 1 „Technical data“).
Do not expose the suspended balance to strong humidity. 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.
Do not use suspended balance in environments exposed to corrosion hazards.
Protect the suspended balance against high humidity, vapours and dust.
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.
HFC-BA-e-1511 9
2.4 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.
2.5 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 suspended on the load receptor only vertically, manually,
carefully and without jerks. As soon as a stable weighing value is reached the
weighing value can be read.
Use the suspended balance only for lifting and weighing of freely movable loads.
Danger of injury due to improper use. Not allowed are e.g.:
- Exceeding the allowed nominal load of crane, suspended balance or any
type of load attachment devices
- Conveying persons,
- Pulling loads over an inclined surface,
- Tearing-off, pulling or towing loads.
Modifications or reconstructions of the suspended balance or of the crane are not
allowed.
2.6 Improper Use
Do not use balance 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“. (Example: Slowly draining fluids from a
container suspended on the balance.) Do not leave permanent load suspended on
the balance. This may damage the measuring system as well as safety-relevant
parts.
The balance may only be used according to the described conditions. Other areas of
use must be released by KERN in writing.
2.7 Warranty
Warranty claims shall be voided in case
Our conditions in the operation manual are ignored
The appliance is used outside the des cr i bed uses
The appliance is modified or opened
Mechanical damage and damage caused by media, liquids,
Natural wear and tear
The appliance is improperly set up or incorrectly electrically connected
The measuring system is overloaded
10 HFC-BA-e-1511
2.8 Saf e working
Do not stand under swinging loads, see chap. 5.1.
Position the crane in a way that the load is lifted vertically.
When working with the crane and suspended balance wear personal safety
equipment (helmet, safety shoes etc.).
2.9 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.
2.10 Testing upon acceptance
Inspect packaging immediately upon receipt and inspect device when unpacking
(see chap. 4.1.) in the event of any evident damage.
2.11 Initial Commissioning
In order to obtain exact results w i th the electr o ni c balanc es, your bal a nc e 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, accumulator or battery).
The accuracy of the balance depends on the local acceleration of gravity.
Strictly observe hints in chapter Adjustment.
For checking original dimensions, s. chap. 4.3
2.12 Shutdown and storage
Remove suspended balance from crane and remove all attachment devices from
the suspended balance.
Do not store suspended balance outdoors.
HFC-BA-e-1511 11
1
Anchor eyelet
5
Keyboard
2
ON/OFF switch
6
Antenna
3
Display
7
Hand loop
4
Battery charge
3. Appliance overview
12 HFC-BA-e-1511
status
Lifting tackle not included in scope of delivery.
Standardised attachment devices are to be used to attach
loads.
lb
3.1 Overview of display
Display Significance
Rechargeable battery capacity
M+ Totalization
STABLE Stability display
ZERO Zero indicator
Net The displayed weighing value is a net weighing value
kg
Radio link display unit
Indicators for weighing with tolerance range
N Weighing Units
balance
HFC-BA-e-1511 13
3.2 Keyboar d ove rview
Button Description of function
• Turn on/off balance
• Taring
• Scroll up/down menu
• For numeric entry increase value of digit
• Zeroing
• Confirm
• Switch-over weighing unit
• Exit menu / back to weighing mode.
• Totalization
• Select digits for numeric entry
• Change-over button between gross and net w ei g ht
• Delete total added memory
• Delete on numeric entry
• Fixing weight display see chap. 5.8
• Displaying peak load value see chap. 5.9
14 HFC-BA-e-1511
3.3 Label
(example)
Do not stand or go under suspended loads.
Do not use on building site.
Keep an eye on suspended loads.
Do not exceed nominal rated load of balance.
The product conforms to the requirements of the
German Equipment and Product Safety Act.
HFC-BA-e-1511 15
Thanks for your comprehension.
Your KERN Quality assurance team
• Suspended balance, see chap. 3.0
4. Commissioning
+ Always observe chapter 2 „General Safety Instructions“!
4.1 Unpacking
Once delivered and unpacked, suspended balances will
not be taken back.
SAFETY
INSTRUCTIONS
for protection against
break
4.2 Scope of delivery
Remove balance and accessories from packaging, remove packaging material.
Verify that there has been no damage and that all packing items are present.
The crane scales have been sealed by Messrs. KERN.
Removal from packaging is also sealed.
+ Broken seal obliges to purchase.
Fig.: Seal
• Holding strap terminal see chap. 3.0
• Rechargeable batteries (3 x 1.5V AA)
• Operating instructions / logbook
16 HFC-BA-e-1511
4.3 Checking the original dimensions
Enter the original dimensions shown on the production data sheet in the grey
boxes of checklist chap. 8.3.
Check original dimension of suspended balance; for implementation see chap.
8.3 „Regular Maintenance“
Enter all data (date, tester, results) in the first line under „Inspection before first
use“ in the checklist (see chapter 8.3)
If the dimensions of your first safety inspection do not match those
of KERN, the balance must not be put into operation. In this case
CAUTION
4.4 Battery / rechargeable battery operation Battery operation:
When batteries are empty, will appear on the balance’s display
please contact a service partner authorised by Messrs. KERN.
Press and replace bat t eri es .
Open battery compartment, replace batteries and close battery compartment again.
In order to save the battery, the balance switches automatically off after 4 minutes
without weighing. This auto-off function can be deactivated in the menu, see chap. 6.
When the suspended balance is out of operation for a longer period, remove the
batteries.
Unscrew battery / rechargeable battery
compartment in the direction of the
arrow.
Replace batteries and relock battery /
rechargeable battery compartment.
HFC-BA-e-1511 17
Accu operation:
When the rechargeable battery is empty, appears on the balance’s display.
Turn off balance and connect power supply unit; battery is charged.
Once the battery has been fully charged the display will show the symbol.
Insert rechargeable battery:
Unscrew battery compartment in arrow
direction.
Remove batteries including battery
mount from the device.
18 HFC-BA-e-1511
Connect cable of balance to battery
cable as shown on image.
Insert battery in the centre.
Ensure that the cables are not kinked.
Relock battery compartment.
HFC-BA-e-1511 19
4.6 Suspending the balance
Condition
The crane needs a safety bracket (1) that the unloaded suspended balance cannot
fall down.
If the safety bracket is missing or damaged, please contact the crane manufacturer in
order to receive a hook with this safety equipment.
Suspend the suspended balance on the lower hook of a crane and close the
safety bracket.
The crane scale’s upper eyelet should rest in the saddle (2).
20 HFC-BA-e-1511
Check all parts (hook, carbines, rings, rope slings,
If faults can be seen on the safety bracket of the crane
hook or if it is missing completely, the scales must not
shock, torsion and oscillating (e.g. caused
(example)
Do not exceed nominal rated load of crane, suspended
balance or any kind of attachment device on the
5. Operation
5.1 Safety instructions
DANGER
Risk of injury due to falling loads!
Take great care when operating the crane and follow the
general rules for crane operation.
cables, chains etc.) for excessive wear or damage
be used.
Work only with appropriate speed
Always avoid vibrations and horizontal forces. Avoid
any kind of
by inclined suspending)
Do not use the suspended balance for conveying loads.
Do not stand or go under suspended loads.
Do not use on building site.
Keep an eye on suspended loads.
suspended balance.
HFC-BA-e-1511 21
5.2 Loading the suspended balance
For good weighing results observe the following, illustrations see next page:
Only use load attachment devices which guarantee a one-spot suspension and
where the scales can be suspended freely.
Do not use too large load attachment devices which do not guarantee any one-
spot suspension.
Do not use multiple suspensions.
Do not pull or push the load or the loaded balance.
Do not pull the hook horizontally.
Loading the balance
1. Position the hook of the suspended balance over the load.
2. Move downwards the suspended balance until the load can be suspended on the
hook of the balance. Reduce the speed when the respective height is going to be
reached.
3. Attach load to attachment device. Ensure that all safety-relevant devices are
functional (e.g. the safety latch is closed). If the load is fixed by slings, ensure that
the slings rest completely on the saddle of the balance ho ok.
4. Lift-off the load slowly.
When the load is fixed by slings, ensure that the load is well balanced on both
sides and that the slings are correctly positioned.
22 HFC-BA-e-1511
+ Always use suitable lifting tackles
Only use attachment devices
which guarantee a one-point
suspension and where the
balance can be suspended
freely.
Do not use too large attachment
devices which cannot guarantee
a one-point suspension.
HFC-BA-e-1511 23
Do not push or pull
Do not pull the hook horizontally
Do not use multiple suspensions
24 HFC-BA-e-1511
5.3 Turn on/off Start-up
Press on the display unit; the unit will carry out a self-test. As soon as the
weight display appears, the instrument will be ready to weigh.
Press , too, on suspended balance.
If „Err 10“ appears in the weight display no radio
communication with the balance could be established. Either
the suspended balance is not yet switched on or the
rechargeable battery has not been sufficiently loaded.
Use to turn on suspended balance or to load batt er y.
„Err 10“ disappears and the zero display will appear. The
balance is now in weighing mode and ready for operation.
Switching Off
Press at the display unit, the display disappears.
5.4 Set balance to zero In order to obtain optimal weighing results, reset to zero the balance before weighing.
Manual:
Unload the balance
Press , zero display as well as indicator ZERO will appear.
Resetting to zero is only possible when the displayed weight value is within the
default zero setting range (See chap 6 “P1 ref0rAnG“) and the balance is not
moving, that is, the stability display “STABLE“ must be displayed.
Automatic:
Automatic zero tracking can be turned off in menu (See chap. 6 /
function “ P1 ref0AUto“ ) or the range for zero tracking can be modified.
When this function is enabled, the zero point will be corrected automatically provided
there is no load on the balance.
HFC-BA-e-1511 25
5.5 Taring
Attach initial load.
Press , zero display appears. The weight of the container is now internally
saved.
Weigh the material, the net weight will be indicated.
After removing the preload weight appears as negative display.
To delete the tare value, remove load from suspended balance and press .
5.6 Weighing
Load the suspended balance.
The weight value will be displayed at once.
Overload warning
Overloading exceeding the stated maximum load (max) of the balance, minus a possibly
existing tare load, must be strictly avoided. This could cause damage to the balance.
Exceeding the maximum load is indicated by the display „ol“ . Unload balance or reduc e
preload.
26 HFC-BA-e-1511
5.7 Switch-over weighing unit
To switch over the weight value to the units enabled in the menu press the UNIT-key
repeatedly (See chap. 6, “F2unt“).
Example, when in the menu all units are set to “on”:
Every time the UNIT-key is pressed, the next weighing unit will be displayed.
kg lb N.
The indicator above N shows weight in Newton.
5.8 Hold weighing value (Data-HOLD function)
Once a stable weight value has been established, this can be fixed until deleted
before the next weighing activity.
Menu setting “P4 HLdHoLd“, see chap. 6
Suspend the material to be weighed
Press to fix the current weight value.
The indicator HOLD appears.
The weighing value will be held in the display until it is deleted by .
HFC-BA-e-1511 27
5.9 Peak value function
This function displays the highest load value (peak value) of a weighing.
Menu setting of “P4 HLdPEAK“, see chap. 6
Attention:
Never exceed the maximum permitted load of the peak value on the
balance (!!Danger of breaking!!).
Suspend the material to be weighed
To start the peak load measuring cycle, press , the heaviest load of the last
weighing activity will be displayed.
The indicator appears above HOLD.
The peak load will be held on the display until deleted by pressing .
5.10 Weighing with tolerance range
To ensure that your weight value is within a defined tolerance range, you can define
an upper and a lower limit value of your choice using function “F4 chk“ (See chap. 6).
During tolerance tests such as portioning or sorting the unit will indicate exceeded or
undershot limits by emitting an optical or acoustic signal.
Audio signal:
The audio signal depends on the settings in menu “F0 offbeep“.
Options:
off
ok
ng
Audio signal turned off
The audio signal will be sounded if the load is within the specified tolerance.
The audio signal will be sounded if the load is outside the specified tolerance
28 HFC-BA-e-1511
Optical signal:
The optical signals provide the following information:
Load exceeds specified tolerance
Load within specified tolerance
Load below specified tolerance
Setting audio signal / tolerance limits:
1. Switch-on balance and during the selftest press .
The first function „F0 oF F“ is displ ayed.
2. To confirm, press , “bk“ will be displayed.
3. Select setting for “beeP“ by .
4. Confirm by , the current settings of the audio signal will be displayed.
5. Select the desired setting (off, ok, ng) by and confirm by pressing
,”bEEP“ will be displayed.
6. Press , the display will return to menu “F0 off“
7. Select functi on “F1H -L“ by and confirm by pressing . The display for
entering the upper limit value „SETHi“ will appear.
8. Confirm by , the enabled digit flashes.
To change the selected (flashing) digit, press repeatedly until the desired value is
displayed. The n select furth er digi ts by and amend them by .
9. Confirm by , “SETHi“ will be displayed.
HFC-BA-e-1511 29
10. Press , the display for entering the lower limit value „SETLo“ appears.
11. Confirm by , the enabled digit flashes.
12. Use and to enter lower limit; see step 8.
13. Confirm input by , “SETLo“ will be displayed.
14. Press repeatedly to exit menu. From here evaluation takes place
whether the goods to be weighed are within the two tolerance limits.
Start tolerance check: Tare when using a weighing container.
Put on goods to be weighed, tolerance control is started. The signal lights indicate
whether the load is within the two set limits.
Depending on the setting in the menu an audio signal may be sounded.
Load below specified
tolerance
The indicator [LO] will
appear
• The tolerance control is not active when the weight is under 20d.
• To delete limits, enter “0000 kg“.
Load within specified
tolerance
The indicator [OK]
appears
Load exceeds specified
tolerance
The indicator [HI] appears
30 HFC-BA-e-1511
5.11 Totalization
With this function the individual weighing values are totalized into the sum memory
by pressing .
Start adding-up procedure:
Hook-on the item to be weighed A.
Wait until the stability display “STABLE” appears, then press .
„n001“ followed by the weight value will be displayed. The weighing value is
added into the summation memory.
Remove the weighed good. More weighed goods can only be added when the
display ≤ zero.
Suspend the item to be weighed B.
Wait until the stability display appears, then press . The weighing value is
added into the summation memory. The number of added-up ite ms “ n002“ ,
followed by the total weight will be displayed for approx. 3 sec. After that the
current weighing value is displayed.
Add more weighed goods as described before.
Please note that the crane scales must be unloaded between the individual weighing
procedures.
This process may be repeated 99 times or till such time as the capacity of the
balance has been exhausted.
HFC-BA-e-1511 31
Display total number “Total“:
When zero is displayed, press and the number of added-up ite ms, fol l owed
by the total weight will be displayed for 3 sec.
Delete accumulative memory:
When zero is displayed, press and the number of added-up ite ms, fol l owed
by the total weight will be displayed for 3 sec. During this display press .
The data in the summation memory are deleted, the indicator „M+“ extinguishes.
5.12 Gross / net invocation
By repeated pressing of , change between gross and net display values.
32 HFC-BA-e-1511
5.13 Display background illumination
Switch-on balance and during the selftest press . “F0 off“ will be displayed.
Press , “bk“ will be displayed.
Press again and the current setting for the background lighting of the display
will be shown.
Press to select the desired setting.
bk on Continuous backgr oun d lig ht ing
bk of Background illumination off
bk Auto Automatic background illumination on when weighing pate is
loaded or key pressed.
Save input by
Back to weighing mode press several times.
HFC-BA-e-1511 33
5.14 Automatic shutdown function
The unit is automatically switched off within the preset time when the display unit or
the weighing bridge are not operated.
Switch-on balance and during the selftest press . “ F0 off“ will be displayed.
Press , “bk“ will be displayed.
Press repeatedly until the aut om ati c switch-off function shows “oFF“.
Press , the current setting will be displayed.
Press to select the desired setting.
off 0 Automatic switch-off function is disabled
off 3 Balance will be switched off 3 minutes later
off 5 Balance will be switched off 5 minutes later
off 15 Balance will be switched off 15 minutes later
off 30 Balance will be switched off 30 minutes later
Save input by
Press back to weighing mode several times.
34 HFC-BA-e-1511
current setting will be displayed.
6. Menu
6.1 Navigation in the menu:
Call up menu
Select menu item
Select setting
Change settings
Confirm setting
Exit menu / Return to
weighing mode
Switch-on balance and during the selftest press .
The first function „F0 off“ is di spl ayed.
With help of , the individual menu items can be
selected one after the other.
Confirm selected menu item by pressing . The
Switch into the available settings using .
Press , balance returns to menu
Press repeatedly.
HFC-BA-e-1511 35
Available
settings
Acoustic signal for weighing with tolerance range switched
off
F3 Com
Pn
6.2 Overview:
Function
F0 oFF
F1 H-L
F2 Unt
Description
bk bk on Background illumination on
bk oF Background illumination off
bk AU Background illumination switches on automatically
when loaded or a button is pressed
bEEP
oFF
ok Audio sound when load is within tolerance limits
nG Audio sound when load is beyond tolerance limits
oFF 0 Autom. shutdown disabled
3/5/15/30 Autom. switch-o ff, opti ons incl ude 3, 5, 15, 30 minute s.
SEtHi
SEtLo
Upper limit value “tolerance weighing “; input see chap.
5.10
Lower limit “tolerance weighing”, input see chap. 5.10
On / off lb Set weighing unit to “on”, which you wish to switch-
over to by in weighing mode; see chap. 5.7.
On / off N
Not documented
CH 1
F4 CH
CH 8
ProG
Service menu
Press , when display shows “ProG“ and the password query “Pn“ will
appear.
Press , , one after the other and the firs t men u block
“P1 rEF“ will be displayed.
Communication channel remote control
36 HFC-BA-e-1511
off
0.5 d
2 d
4 d
P0
P10
P20
P50
P100
P0
P2
P4
P10
P20
P2 CAL
div 1
Readability [d] 1. Weighing range
div2
Readability [d] 2. Weighing range
cap 1 Balance capacity [max] 1.
Weighing range
cap 2 Balance capacity [max] 2.
Weighing range
div 1
Readability [d] 1. Weighing range
div2
Readability [d] 2. Weighing range
cap 1 Balance capacity [max] 1.
Weighing range
cap 2 Balance capacity [max] 2.
Weighing range
commo
Adjustment procedure see chap. 7.1
LinE0
Linearization proced ur e see chap. 7. 2
P1 rEF
AZn
0AUto
0rAnG
SiGrA
Single range
scale
dU rA
Dual range
scale
Automatic zero correction (auto-zero) on
change of display,
Digit options include
Load range where the display after
switching-on the balance is automatically set
to zero.
Options include 0, 10, 20, 30, 50, 100 %
Load range where the display is set to zero
by pressing .
Options include 0, 2, 4, 10 , 20%.
0.5d, 2 d, 4 d..
dESC Position of the decimal dot
inC Readability (d)
CAP Capacity (max)
CAL Adjustment procedure see chap. 7
dESC Position of the decimal dot
inC
CAP
CAL Adjustment procedure see chap. 7
dU in
Multi-interval
dESC Position of the decimal dot
inC
scale
CAP
CAL
P3 inP 12345 Display internal resolution
Modifications may only be carried out by a specialist with competent knowledge.
Adjustment or linearization is required after each configuration; see chap. 7.1 or 7.2.
Hold Data-HOLD function see chap. 5.8
P 4 HLd
PEAK Peak value function see chap. 5.9
HFC-BA-e-1511 37
is required for stabilization.
7. Adjustment / linearization
7.1 Adjustment
As the acceleration value due to gravity is not the same at every location on earth,
each balance 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 balance 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 balance
periodically in weighing operation.
• Provide the required adjustment weight, see chap. 1. “Techn. data“.
Preparation:
The weight to be used depends on the capacity of the scale. Carry out
adjustment as near to maximum load as possible. Info about test weights can
be found on the Internet at: http://www.kern-sohn.com
• Observe stable environmental conditions. A warming up time (see chapter 1)
Turn off balance and attach suitable lifting tackle.
Turn on balance with the lifting tackle attached and press
during self-test. The first function „F0 off“ is dis played.
Press repeatedly until „ProG“ will be displayed.
Press , when display shows “ProG“ and the password
query “Pn“ will appear.
Press subsequently , , and the first menu
block “P1 rEF“ will be displayed.
38 HFC-BA-e-1511
Commo
Adjustment
Press to call up “P2 CAL“.
Press and select the set balances type by .
SiGrA Single-range balance
dU rA Dual range balance
dU in Multi-interval balance
Acknowledge by .
Press repeatedly until „CAL“ will be displayed.
Confirm by and select required setting by
LinE0 Linearization
HFC-BA-e-1511 39
appear briefly (Ignore error message), then
How to carry out adjustment:
Confirm adjustment func ti on “Co m mo“ by .
“ULoAd“ will be displayed. Make sure that no loads
apart from the lifting tackle are attached to the hook.
Wait for stability display, then press .
Either use the displayed adjustment weight or change
by and , the currently enabled digit is
flashing.
To change the selected (flashing) digit, press
repeatedly until the desired value is displayed. Then
select further digits by and amend them by
.
(example)
Confirm by , „LoAd“ will be shown.
Attach adjustment weight. Wait for stability display,
then press .
After successful adjustment „Pass“ will be displayed.
Afterwards the balance will carry out a self-test.
“Err19“ will
the balance will change automatically into weighing
mode and the total weight will be displayed.
Adjustment has now been completed successfully.
(example)
In case of an adjustment error or incorrect adjustment value the error message
“fail“ will be displayed and you must repeat the adjustment procedure.
40 HFC-BA-e-1511
As soon as “LoAd 2“ is displayed attach second adjustment
7.2 Linearization
Linearity shows the greatest deviation of a weight display on the scale to the value of
the respective test weight according to plus and minus over the entire weighing
range.
If linearity deviation is discovered during a monitoring of test resources, you can
improve this by means of linearization.
• Carrying out linearization is restricted to specialist staff possessing well
acquainted with the workings of balances.
• The test weights to be used must be adapted to the balance’s
specifications; see chapter 2.9 “Testing instruments control”.
• Observe stable environmental conditions. Stabilisation requires a certain
warm-up time.
• After successful linearization you will have to carry out calibration; see
chapter 2.9 “Testing instruments control”
Preparation:
Call up linearization function “LinE0“; see chap. 7.1
How to carry out linearization:
Confirm „LinE0“ by .
“LoAd0“ will be displayed. Make sure that no loads apart
from the lifting tackle are attached to the hook.
Wait for stability display, then press .
As soon as “LoAd 1“ is displayed attach first adjustment
weight (1/3 max).
Wait for stability display „STABLE“, then press .
weight (2/3 max).
HFC-BA-e-1511 41
Wait for stability display „STABLE“, then press .
As soon as “LoAd 3“ is displayed attach third adjustment
weight (max).
Wait for stability display, then press .
After successful adjustment „Pass“ will be displayed.
Afterwards the balance will carry out a self-test.
“Err19“ will appear briefly (Ignore error message), then the
balance will change automatically into weighing mode and
the total weight will be displayed.
Linearization has now been completed successfully.
(example)
42 HFC-BA-e-1511
Risk of injury and risk of material damage!
8. Cleaning, Maintenance and Disposal
The suspended balance is part of the lifting gear!
For a safe operation please observe the following:
Danger
Have carried out a regular maintenance by trained specialized
staff
Carry out regular maintenance and servicing, see chap. 8.3.
Have the parts exchanged only by trained specialized staff.
If there arose discrepancies with the safety checklist, the balance
must not more be put into operation.
Do not repair the suspended balance yourself. Repair may only be
carried out by service partners authorized by Messrs. KERN.
8.1 Cleaning and Disposal
Damage to suspended balance!
Do not use industrial solutions or chemicals
CAUTION
(e.g. acid embrittlement).
Clean the keyboard and the display with a soft cloth soaked in mild window
cleaning agent.
Disposal of packaging and appliance must be carried out by operator according to
valid national or regional law of the location where the appliance is used.
HFC-BA-e-1511 43
Prior to each usage
Check for fault-free oper at ion of the attachment devices
processes
weighing processes
8.2 Regular maintenance and care
The regular 3-month maintenance may only be carried out by an expert with
competent knowledge of working with suspended balances. Thereby the national
regulations for prevention of accidents as well as the working, operation and
safety regulations of the owner-operator.
To check the dimensions only use suitable test devices.
The regular 12-month maintenance must only be carried out by trained
specialized staff (KERN customer service).
The results of the maintenance must be written down in the checklist (chap. 8.3).
The additional results of the extended maintenance have to be entered in the
checklist (chapter 9.1).
The load suspension device is to be cleaned before inspection, see chap. 8.1.
Regular maintenance:
Initial start-up,
every 3 months or
definitely after
12 500 weighing
processes
Every 12 m onths or
in any case after
50 000 weighing
Every 10 years or
anyway after 500 000
Note
For inspection of wear and tear please refer to the drawing (See chap. 8.3) below.
Rejection criteria: Load carrying devices may no longer be used when e.g.
Check all dimensions, see checklist chap. 8.3
Check the suspended balance and the used attachment device
for wear and tear, such as e.g. plastic deformation, mechanical
damage (unevenness), notches, striation, cracks, corrosion and
torsions.
Remove balance from use immediately if a reading exceeds the
permitted deviation from the original reading (see checklist, chap.
8.3) or any other fault is identified.
If the enhanced maintenance has to be carried out by trained staff
(KERN customer service). At this general revision all load carrying
parts must be checked for gaps with magnetic powder.
Replace entire suspended balance
+ Deviations during the tests defined for maintenance were discovered.
+ The type or load rating plate is missing.
+ Load suspension devices known to have been overloaded or subject to other
harmful influences may no longer be used and/or may be re-used only after
inspection.
44 HFC-BA-e-1511
8.3 Checklist „regular maintenance“, (see chapter 8.2)
Original dimensions suspended
Serial no. ……………………………
balance
(You can find these data in the
documentation enclosed with the
balance. Please keep this document
always available.
Capacity ……………………………
Lifting eyes clearance k [mm]
Date ………………………………… Tester ………………………………………
HFC-BA-e-1511 45
Clearance k Date Tester
Max. admitted variation
Revision prior to first use
3 months / 12,500 x
6 months / 25,000 x
9 months / 37,500 x
12 months / 50,000 x
15 months / 62,500 x
18 months / 75,000 x
21 months / 87,500 x
24 months / 100,000 x
27 months / 112,500 x
30 months / 125,000 x
1%
33 months / 137,500 x
36 months / 150,000 x
39 months / 162,500 x
21 months / 87,500 x
42 months / 175,000 x
45 months / 187,500 x
48 months / 200 000
51 months / 212,500 x
54 months / 225,000 x
57 months / 237,500 x
60 months / 250 000x
All load carrying parts have to be exchanged by a service
partner authorised by KERN.
bold letters = this maintenance work has to be carried out by a service partner
authorized by KERN.
46 HFC-BA-e-1511
9. Enclosure
9.1 Checklist „Enhanced maintenance“ (General revision)
The enhanced maintenanc e has t o be carried out by a service partner authorized by
KERN.
Model ……………………..………………..
Suspended balance
Serial no. …………………….……………..
Magnetic
Interval
12 months / 50,000 x
24 months / 100,000 x
36 months / 150,000 x
particle testing
for cracks
lifting eyes
Date Name Signature
48 months / 200,000 x
60 months / 250,000 x
72 months / 300,000 x
84 months / 350,000 x
96 months / 400,000 x
108 months /450000 x
120 months /500000 x
Replace suspended balance completely
HFC-BA-e-1511 47
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