Kern PLE User manual
KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
email: info@kern-sohn.com
Operating Manual
Precision balance
KERN PLE
Version 1.2
01/2008
GB
Phone: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
PLE-BA-e-0812
GB
KERN PLE
Version 1.2 01/2008
Operating Manual
Electronic Precision Balance
Table of Contents
1 TECHNICAL DATA............................................................................................. 5
1.1 Dimensions ............................................................................................................................... 6
2 DECLARATION OF CONFORMITY ................................................................... 7
3 BASIC INFORMATION (GENERAL) .................................................................. 8
3.1 Proper use................................................................................................................................. 8
3.2 Improper Use ............................................................................................................................ 8
3.3 Warranty .................................................................................................................................... 8
3.4 Monitoring of Test Resources................................................................................................. 8
4 BASIC SAFETY PRECAUTIONS ....................................................................... 9
4.1 Pay attention to the instructions in the Operation Manual .................................................. 9
4.2 Personnel training.................................................................................................................... 9
5 TRANSPORT AND STORAGE........................................................................... 9
5.1 Testing upon acceptance ........................................................................................................ 9
5.2 Packaging.................................................................................................................................. 9
6 UNPACKING, SETUP AND COMMISSIONING ................................................. 9
6.1 Installation Site, Location of Use............................................................................................ 9
6.2 Unpacking ............................................................................................................................... 10
6.2.1 Remove the transportation lock ........................................................................................... 10
6.2.2 Placing.................................................................................................................................. 11
6.2.3 Scope of delivery.................................................................................................................. 11
6.3 Mains connection ................................................................................................................... 12
6.4 Battery power supply............................................................................................................. 12
6.4.1 Battery charging status display ............................................................................................ 12
6.5 Connection of peripheral devices......................................................................................... 12
6.6 Initial Commissioning ............................................................................................................ 12
6.6.1 Switching on/off.................................................................................................................... 13
6.6.2 Stability display .................................................................................................................... 13
6.6.3 Balance zero display ............................................................................................................13
7 ADJUSTMENT.................................................................................................. 13
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8 OPERATING ELEMENTS................................................................................. 15
8.1 Backlit display ........................................................................................................................ 15
8.2 Keyboard overview................................................................................................................. 15
8.3 Overview of display................................................................................................................ 16
9 THE MENU........................................................................................................ 17
9.1 List of Menu Functions ..........................................................................................................17
9.2 Navigation in the menu..........................................................................................................18
10 BASIC OPERATION ..................................................................................... 19
10.1 Switching on/off ..................................................................................................................... 19
10.1.1 Stability display ................................................................................................................ 19
10.1.2 Balance zero display........................................................................................................ 19
10.2 Simple weighing ..................................................................................................................... 19
10.3 Weighing with taring .............................................................................................................. 19
10.3.1 Taring............................................................................................................................... 19
10.3.2 Delete tare ....................................................................................................................... 20
10.3.3 Numerical input of tare (PRE-TARE)............................................................................... 20
10.4 Standard weighing unit..........................................................................................................21
10.5 Temporary weighing unit switching (P4.2Funi) .................................................................. 22
11 MENU FUNCTION "P1 READ" BASIC SETTINGS ..................................... 23
11.1 Filter settings .......................................................................................................................... 23
11.2 Median Filter ........................................................................................................................... 24
11.3 Auto-Zero – Automatic Zeroing ............................................................................................ 25
11.4 Tare function........................................................................................................................... 26
12 MENU FUNCTION "P5 OTHR" - FURTHER USEFUL FUNCTIONS........... 27
12.1 Display background illumination.......................................................................................... 27
12.2 Intensity of backlighting ........................................................................................................ 28
12.3 Acoustic signal when button is pressed ............................................................................. 29
12.4 AUTO-OFF - Automatic switching-off .................................................................................. 30
12.5 Rechargeable battery charging options .............................................................................. 31
13 MENU FUNCTION "P4 FUNC" - OPERATING MODES.............................. 32
13.1 Settings for Function P4.1 FFun "ALL" ............................................................................... 33
13.2 Quantities (Function P4.3 PcS) ............................................................................................. 35
13.3 Weighing with tolerance range (Function P4.4 HiLo)......................................................... 38
13.4 Percentage calculation (Functions P4.5 PrcA/ P4.6 Prcb) ................................................. 40
13.4.1 Calculation of reference weight by weighing (P4.5 PrcA) ............................................... 40
13.4.2 Numerical input of the reference weight (P4.6 Prcb)....................................................... 41
13.5 Automatic Taring (Function P4.7 AtAr ................................................................................. 42
13.6 Peak value function (P4.8 toP) .............................................................................................. 43
13.7 Totalising of display values (Function P4.9 Add) ............................................................... 44
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13.7.1 Call-up of last saved display value .................................................................................. 46
13.8 Animal weighing function (P4.A AnLS)................................................................................ 47
13.9 PRE-TARE memory (P4.b tArE) ............................................................................................ 48
14 DATA OUTPUT RS 232 C............................................................................. 50
14.1 Pin allocation of the balance output plug (front view) ....................................................... 50
14.2 Menu function "P2 Prnt" - RS 232C Parameter .................................................................. 51
14.2.1 Navigation in the menu .................................................................................................... 51
14.2.2 Setting for data output type "P2.1 Pr_n".......................................................................... 52
14.2.3 Input of minimum weight "P2.2 S_Lo" ............................................................................. 53
14.2.4 Setting for Baud rate "P2.3" bAud” .................................................................................. 54
14.2.5 Parameters for RS232 interface "P2.4 S_rS" .................................................................. 54
14.3 Communication protocol / remote control commands ...................................................... 55
14.3.1 Response messages from balance ................................................................................. 55
14.4 Manual output ......................................................................................................................... 56
14.5 Continuous output ................................................................................................................. 57
15 ERROR MESSAGES..................................................................................... 58
16 SERVICE, MAINTENANCE, DISPOSAL ...................................................... 58
16.1 Cleaning .................................................................................................................................. 58
16.2 Service, maintenance............................................................................................................. 58
16.3 Disposal................................................................................................................................... 58
17 INSTANT HELP............................................................................................. 59
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1 Technical Data
KERN PLE 200-3 PLE 2000-2
Weighing range (max) 200 g 2000 g
Readability (d) 0.001 g 0.01 g
Reproducibility 0.002 g 0.02 g
Linearity ± 0.003 g ± 0.03 g
Recommended adjustment weight,
not added (class)
Minimum unit weight at
piece counting
Warm-up time 2 hours
Reference quantities at
piece counting
Weighing unit g, ct
Stabilization time (typical) 3 sec.
Electric Supply Mains adapter 220-240 V AC 50 Hz
Rechargeable batteries (standard) 6 x NIMH R6 (AA), service life with
background lighting approx.35 h/charging time
approx.10 h
Operating temperature + 15° C …. + 30° C
Humidity of air max. 90 % (not condensing)
200 g (F1) 2 kg (F1)
> 1 mg
10, 20, 50, freely selectable
Usable weighing space 150 x 138 x 60 mm
Weight kg (net) 1.7kg
Interface RS 232C
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1.1 Dimensions PLE 200-3:
PLE 2000-2:
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2 Declaration of conformity
KERN & Sohn GmbH
D-72322 Balingen-Frommern
Postbox 4052
email: info@kern-sohn.de
Phone: 0049-[0]7433- 9933-0
Fax: 0049-[0]7433-9933-149
Internet: www.kern-sohn.de
Declaration of conformity
EC-Konformitätserklärung EC-Declaration of -Conformity
Déclaration de conformité EC-Declaración de Conformidad
ECEC-Dichiarazione di conformità EC-Conformiteitverklaring
EC- Declaração de conformidade EC- Prohlášení o shode
EC-Deklaracja zgodności EC-Заявление о соответствии
D
GB
CZ
E
F
I
NL
P
PL
RUS
Konformitätserklärung
Declaration of
conformity
Prohlášení o
shode
Declaración de
conformidad
Déclaration de
conformité
Dichiarazione di
conformità
Conformiteitverklaring
Declaração de
conformidade
Deklaracja
zgodności
Заявление о
соответствии
Wir erklären hiermit, dass das Produkt, auf das sich diese Erklärung bezieht,
mit den nachstehenden Normen übereinstimmt.
We hereby declare that the product to which this declaration refers conforms
with the following standards.
Tímto prohlašujeme, že výrobek, kterého se toto prohlášení týká, je v souladu
s níže uvedenými normami.
Manifestamos en la presente que el producto al que se refiere esta
declaración está de acuerdo con las normas siguientes
Nous déclarons avec cela responsabilité que le produit, auquel se rapporte la
présente déclaration, est conforme aux normes citées ci-après.
Dichiariamo con ciò che il prodotto al quale la presente dichiarazione si
riferisce è conforme alle norme di seguito citate.
Wij verklaren hiermede dat het product, waarop deze verklaring betrekking
heeft, met de hierna vermelde normen overeenstemt.
Declaramos por meio da presente que o produto no qual se refere esta
declaração, corresponde às normas seguintes.
Niniejszym oświadczamy, że produkt, którego niniejsze oświadczenie
dotyczy, jest zgodny z poniższymi normami.
Мы заявляем, что продукт, к которому относится данная декларация,
соответствует перечисленным ниже нормам.
Electronic Balance: KERN PLE
Mark applied EU Directive Standards Title
2004/108/EC EN 55022: 2000 EMC
Date: 27.11.2007 Signature:
Gottl. KERN & Sohn GmbH, Ziegelei 1, D-72336 Balingen, Tel. +49-[0]7433/9933-0,Fax +49-[0]7433/9933-149
PLE-BA-e-0812
2006/95/EC EN 61010-1: 2004 Low Voltage
Gottl. KERN & Sohn GmbH
Management
7
3 Basic Information (General)
3.1 Proper use
The balance you purchased is intended to determine the weighing value of material
to be weighed. It is intended to be used as a “non-automatic“ balance, i.e. the
material to be weighed is manually and carefully placed in the centre of the weighing
plate. As soon as a stable weighing value is reached the weighing value can be read.
3.2 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“ in the balance. (Example: Slowly
draining fluids from a container on the balance.)
Do not leave permanent load on the weighing plate. This may damage the measuring
system.
Impacts and overloading exceeding the stated maximum load (max) of the balance,
minus a possibly existing tare load, must be strictly avoided. Balance may be
damage by this.
Never operate balance in explosive environment. The serial version is not explosion
protected.
The structure of the balance may not be modified. This may lead to incorrect
weighing results, safety-related faults and destruction of the balance.
The balance may only be used according to the described conditions. Other areas of
use must be released by KERN in writing.
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
3.4 Monitoring of Test Resources
In the framework of quality assurance the measuring-related properties of the
balance and, if applicable, the testing weight, must be checked regularly. The
responsible user must define a suitable interval as well as type and scope of this test.
Information is available on KERN’s home page (www.kern-sohn.com with regard to
the monitoring of balance test substances and the test weights required for this. In
KERN’s accredited DKD calibration laboratory test weights and balances may be
calibrated (return to the national standard) fast and at moderate cost.
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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.
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
Keep all parts of the original packaging in case you need to return the appliance.
Only use original packaging for returning.
Before sending, disconnect all connected cables and loose/movable parts.
Attach possibly existing transport safeguards. Secure all parts, e.g. weighing plate,
power unit etc., to prevent slipping and damage.
6 Unpacking, Setup and Commissioning
6.1 Installation Site, Location of Use
The balances are designed in a way that reliable weighing results are achieved in
common conditions of use.
You will work accurately and fast, if you select the right location for your balance.
Therefore, observe the following for the installation site:
• Place the balance on a firm, level surface;
• Avoid extreme heat as well as temperature fluctuation caused by installing
next to a radiator or in the direct sunlight;
• Protect the balance against direct draughts due to open windows and doors;
• Avoid jarring during weighing;
• Protect the balance against high humidity, vapours and dust;
• Do not expose the device to extreme dampness for longer periods of time.
Non-permitted condensation (condensation of air humidity on the appliance)
may occur if a cold appliance is taken to a considerably warmer environment.
In this case, acclimatize the disconnected appliance for ca. 2 hours at room
temperature.
• Avoid static charge of goods to be weighed or weighing container.
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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
Carefully remove the balance from the packaging, remove plastic cover and setup
balance at the intended workstation.
6.2.1 Remove the transportation lock
PLE 200-3
PLE 2000-2
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6.2.2 Placing
PLE 200-3
PLE 2000-2
Level balance with foot screws until the air bubble of the water balance is in the
prescribed circle.
6.2.3 Scope of delivery
Serial accessories:
• Balance
• Weighing plate
• Mains power supply
• Wind protection
• Rechargeable battery
• Operating Manual
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6.3 Mains connection
Power is supplied via the external mains adapter. The stated voltage value must be
the same as the local voltage.
Only use original KERN mains adapters. Using other makes requires consent by
KERN.
6.4 Battery power supply
The balance is fitted with rechargeable NiMH R6 (AA) batteries and plug-in power
pack as standard.
Use the provided power pack for battery charging.
During initial operation it is very important to charge the batteries for c. 12 hours.
Afterwards discharge the batteries completely 3 times (watch display message and
automatic disconnection) and recharge. If this is done, the life of the batteries will be
increased and the nominal capacity of the batteries reached.
For operation with rechargeable batteries the balance has some functions which can
be activated or deactivated in the menu; see Section 12.4.
If the AUTO-OFF function is activated, the balance switches off automatically to save
the rechargeable batteries after 5 minutes without load change.
If the symbol or “bat lo" appears in the display when switching on the balance, this
means that the capacity of the rechargeable batteries will soon be exhausted, charge
the rechargeable batteries as soon as possible.
This symbol will pop up every 2 seconds during the charging process.
6.4.1 Battery charging status display
⇒ Press simultaneously +
6.5 Connection of peripheral devices
Before connecting or disconnecting of additional devices (printer, PC) to the data
interface, always disconnect the balance from the power supply.
With your balance, only use accessories and peripheral devices by KERN, as they
are ideally tuned to your balance.
6.6 Initial Commissioning
In order to obtain exact results with the electronic balances, your balance must have
reached the operating temperature (see warming up time chap. 1).
During this warming up time the balance must be connected to the power supply
(mains, accumulator or battery).
The accuracy of the balance depends on the local acceleration of gravity.
Strictly observe hints in chapter Adjustment.
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6.6.1 Switching on/off
Start-up Press the ON/OFF button for approx. 0.5 sec.
The balance will carry out a self-test The balance is ready for
weighing when the weight display appears.
Switching Off Press the ON/OFF button for approx. 0.5 sec.
-OFF- appears briefly before the display disappears.
6.6.2 Stability display
The appearance of the stability symbol [ ] on the display indicates that the
weighing plate is in a stable state. If the status is instable the [ ] display
disappears.
6.6.3 Balance zero display
Should the balance not display exactly zero despite empty scale pan, press the
button. The balance starts with resetting to zero [ a ] .
7 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.
Procedure when adjusting:
Calibration should be carried out by using a recommended calibration weight.
(See chpt. 1 “Technical specifications“):
Observe stable environmental conditions. A warm-up time of 2 hours is necessary for
stabilisation.
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⇒ +
⇒
⇒
⇒
⇒
The weight value of the required adjustment weight will pop up:
Place the required calibration weight carefully in the centre of the weighing plate and
press the PRINT key. CAL appears on the display, adjustment is automatically
started.
Once the adjustment has been completed, unLoAd will appear in the display
Take away adjustment weight
• Return to weighing mode
Press the button repeatedly until the "SAVE"? inquiry appears.
Confirm the inquiry by pressing the button to save the changes and to return to
Weighing mode.
-or-
press the button to return to Weighing mode without saving.
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8 Operating elements
8.1 Backlit display
Very contrastful display which can also be red in the darkness.
8.2 Keyboard overview
Key Function in Operating mode
• Switch machine on/off
• Function key
• Set balance to zero
• Data output
• Tare balance
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8.3 Overview of display
No. Display Description
1. FIL
2. bAud
3. HiLo
4. rEPL
5. StAb
6. Auto
7. t1
8. toP
9. Add
10. AnLs
11.
tArE
Filter setting
RS 232 interface speed
+/- tolerance with respect to reference weight
Automatic display printout
Printing will be started as soon as the stability
display appears
Monitoring weight display at 0
Automatic cutout
Maximum weight storage
Totalising symbol
Symbol for animal weighing function
Symbol for PRE-TARE function (pre-tare
deduction)
12. →0←
13. [ ]
14. PCS
15. g (kg)
16.
17. Net
18.
19.
20.
Balance zero display
Stability display
Symbol for "Piece-counting" mode
Symbol for "Weighing" mode
Battery very low.
Tara symbol
+/- tolerance with respect to reference weight entry
of lower limit or weight below tolerance
+/- tolerance with respect to reference weight within
prescribed limits
+/- tolerance with respect to reference weight entry
of upper limit or weight above tolerance
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9 The menu
The individual elements of the Menu system (Main menu, Submenu and Settings) are
displayed with a P Number and an abbreviation.
The number abbreviations for the menus can be found in the List of Menu Functions
below.
9.1 List of Menu Functions
P1 rEAd [Basic settings, see chap. 11]
P1.1 FiL | 2 Filter settings
P1.2 Auto | YES Auto Zero
P1.3 tArA | no Tare function
P1.4 Fnnd | no Median Filter
P2 Prnt [RS 232 Parameter, see chap. 14.2]
P2.1 Pr_n | StAb Setting data output type
P2.2 S_Lo | Entering minimum weight
P2.3 bAud | 9600 Setting baud rate
P2.4 S_rS | 8d1SnP Setting transmission parameter
P3 Unit [Weighing units, see chap. 10.4]
P3.1 StUn | kg Setting standard weighing unit
P4 Func [Operating modes, see chap. 13]
P4.1 FFun | ALL selection enabled operating modes
P4.2 Funi | No Weighing units switch-over
P4.3 PcS | No Parts counting
P4.4 HiLo | No Tolerance weighing
P4.5 PrcA | No Percentage weighing (by means of weighing)
P4.6 Prcb | No Percentage weighing (by manual entry)
P4.7 AtAr | No Automatic taring
P4.8 toP | No Peak value function
P4.9 thêm vào No Adding
P4.A AnLS | No Animal weighing
P4.b tArE | No PRE-TARE
P5 othr [Further useful functions, see chap. 12]
P5.1 bL | Auto Display background illumination
P5.2 bLbt | 50 Intensity of backlighting
P5.3 bEEP | YES Key sound
P5.4 t1 | no AUTO-OFF
P5.5 CHr6 | no Rechargeable battery charging function
switch-off
P6 CAL [Adjustment, see chap. 7]
P6.1 St_u | not documented
P6.2 uCAL | Adjustment
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9.2 Navigation in the menu
Keyboard overview in menu:
Key Function in Menu
+
+
Storing / jumping back to weighing mode
Any changes made in the balance memory will only be saved when the storing
process is complete.
• Access to Main menu
• Numeric entering of tara weight
• Scroll back
• Menu selection
• Changing parameter value
• Increase in the numerical value of a figure by "1"
• Submenu/Parameter call-up
• Shift and select number to be changed to the right
• Confirm/save settings
• Quit function without changing the settings
• Back to menu
To achieve this, press the key several times until “SAVE“? appears.
Any changes carried out are stored by pressing the key.
To cancel changes, press the key.
Afterwards the balance automatically jumps back to weighing mode.
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