KERN PCD Series 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 instructions
Precision balance
KERN PCD
Version 1.5
09/2016
GB
PCD-BA-e-1615

2 PCD-BA-e-1615
GB
KERN PCD
Version 1.509/2016
Operating instructions
Precision balance
Contents
1Technical data................................................................................................ 4
2Basic Information (General).......................................................................... 7
2.1 Proper use.................................................................................................................................. 7
2.2 Improper Use.............................................................................................................................. 7
2.3 Warranty..................................................................................................................................... 7
2.4 Monitoring of Test Resources..................................................................................................... 7
3Basic Safety Precautions.............................................................................. 8
3.1 Pay attention to the instructions in the Operation Manual .......................................................... 8
3.2 Personnel training....................................................................................................................... 8
4Transport and storage................................................................................... 8
4.1 Testing upon acceptance ........................................................................................................... 8
4.2 Packaging / return transport....................................................................................................... 8
5Unpacking, Setup and Commissioning ....................................................... 9
5.1 Installation Site, Location of Use ................................................................................................ 9
5.2 Unpacking/installation................................................................................................................. 9
5.3 Mains connection...................................................................................................................... 12
5.4 Operation using a rechargeable battery (optional) ................................................................... 12
5.5 Connection of peripheral devices ............................................................................................. 13
5.6 Initial Commissioning................................................................................................................ 13
5.7 Linearisation ............................................................................................................................. 14
5.8 Adjustment................................................................................................................................ 16
5.9 Adjustment................................................................................................................................ 17
6Operating elements ..................................................................................... 18
6.1 Overview of display................................................................................................................... 18
6.2 Keyboard overview ................................................................................................................... 18
7Basic Operation........................................................................................... 19
7.1 Start-up..................................................................................................................................... 19
7.2 Switching Off............................................................................................................................. 19
7.3 Weighing................................................................................................................................... 19
7.4 Taring........................................................................................................................................ 20
7.5 Pre-Tare function...................................................................................................................... 21
7.6 Plus/minus weighings............................................................................................................... 21
7.7 Parts counting........................................................................................................................... 22
7.8 Net-total weighing..................................................................................................................... 23
7.9 Percent determination .............................................................................................................. 24

PCD-BA-e-1615 3
8Menu ............................................................................................................. 25
8.1 Navigation in the menu............................................................................................................. 25
8.2 Menu overview.......................................................................................................................... 28
8.3 Description of individual menu items........................................................................................ 30
8.3.1 Weighing Units ......................................................................................................................... 30
8.3.2 Dosing and Zero-tracking......................................................................................................... 31
8.3.3 Selection of adjustment weight................................................................................................. 32
8.3.4 Filterfunction............................................................................................................................. 33
8.3.5 Display background illumination............................................................................................... 34
8.3.6 Animal weighing function.......................................................................................................... 35
8.3.7 Foot switch................................................................................................................................ 36
8.3.8 Reset to factory setting............................................................................................................. 36
8.4 Interface parameters ................................................................................................................ 37
8.4.1 Data transfer mode................................................................................................................... 37
8.4.2 Printout ..................................................................................................................................... 38
8.4.3 Printout example....................................................................................................................... 39
8.4.4 Baud rate.................................................................................................................................. 39
9Data output RS 232 C .................................................................................. 40
9.1 Technical data .......................................................................................................................... 40
9.2 Pin allocation of balance output bushing:................................................................................. 40
9.3 Explanation of the data transfer................................................................................................ 41
9.4 Output on bar code printer........................................................................................................ 43
10 Service, maintenance, disposal.................................................................. 44
10.1 Cleaning.................................................................................................................................... 44
10.2 Service, maintenance............................................................................................................... 44
10.3 Disposal.................................................................................................................................... 44
11 Instant help................................................................................................... 45
12 Declaration of -Conformity.......................................................................... 46

4 PCD-BA-e-1615
1 Technical data
KERN PCD 250-3 PCD 300-3
Readability (d) 0.001 g 0.001 g
Weighing range (max) 250 g 350 g
Taring range (subtractive) 250 g 350 g
Reproducibility 0.002 g 0.002 g
Linearity ±0.005 g ±0.005 g
Minimum unit weight at
piece counting 0.002 g 0.002 g
Warm-up time 2 hours 2 hours
Reference quantities at
piece counting 5, 10, 20, 25, 50 5, 10, 20, 25, 50
Weighing Units Details „Weighing units“ see chpt. 8.3.1
Recom. adjustment weight, not
added (class)
Details about „Selection of
adjustment weight“ see chap.
8.3.3
250 g (F1) 350 g (F1)
Stabilization time (typical) 3 sec. 4 sec.
Operating temperature + 5° C .... + 35° C
Humidity of air max. 80 % (not condensing)
Dimensions, completely assembled
(W x D x H) mm 165 x 245 x 142 165 x 245 x 142
Windshield rectangular mm inside: 146x146x70
outside: 158x158x63 inside: 146x146x80 outside: 157x157x80
Dimensions Display housing 140 x 75 x 46
Weighing plate mm Ø 10.5
Weight kg (net) 1.1
Electric Supply 220V-240V AC, 50 Hz / 9 V, 300 mA
Battery operation 9 V compound battery (optional)
Rechargeable battery (optional)
Operating time 24 h with display background illumination
Operating time 48 h without display background
illumination
loading time 8 h
Interface RS232

PCD-BA-e-1615 5
KERN PCD 2500-2 PCD 3000-2
Readability (d) 0.01 g 0.01 g
Weighing range (max) 2500 g 3.5 kg
Taring range (subtractive) 2500 g 3.5kg
Reproducibility 0.02 g 0.02 g
Linearity ±0.05 g ±0.05 g
Minimum unit weight at
piece counting 0.02 g 0.02 g
Warm-up time 2 hours 2 hours
Reference quantities at
piece counting 5, 10, 20, 25, 50
Weighing Units Details „Weighing units“ see chpt. 8.3.1
Recom. adjustment weight, not
added (class)
Details about „Selection of
adjustment weight“ see chap.
8.3.3
2500 g (F1) 3 kg (F1)
Stabilization time (typical) 3 sec.
Operating temperature + 5° C .... + 35° C
Humidity of air max. 80 % (not condensing)
Dimensions, completely assembled
(W x D x H) mm 165 x 280 x 73
Dimensions Display housing 140 x 75 x 46
Weighing plate mm 160x160
Weight kg (net) 1.6 1.9
Electric Supply 220V-240V AC, 50 Hz / 9 V, 300 mA
Battery operation 9 V compound battery (optional)
Rechargeable battery (optional)
Operating time 24 h with display background illumination
Operating time 48 h without display background
illumination
loading time 8 h
Interface RS232

6 PCD-BA-e-1615
KERN PCD 6K-4 PCD 10K0.1 PCD 10K3
Readability (d) 0.1 g 0.1 g 1 g
Weighing range (max) 6000 g 10 kg 10 kg
Taring range (subtractive) 6000 g 10 kg 10 kg
Reproducibility 0.1 g 0.1 g 1 g
Linearity ±0.3 g ±0.3 g ±3 g
Minimum unit weight at
piece counting 0.2 g 0.2 g 2 g
Warm-up time 2 hours 2 hours 30 min.
Reference quantities at
piece counting 5, 10, 20, 25, 50
Weighing Units Details „Weighing units“ see chpt. 8.3.1
Recom. adjustment weight, not
added (class)
Details about „Selection of
adjustment weight“ see chap.
8.3.3
6000 g (F1) 10 kg (F1) 10 kg (M1)
Stabilization time (typical) 3 sec.
Operating temperature + 5° C .... + 35° C
Humidity of air max. 80 % (not condensing)
Dimensions, completely assembled
(W x D x H) mm 165 x 280 x 73
Dimensions Display housing 140 x 75 x 46
Weighing plate mm 160x160
Weight kg (net) 1.6 1.6 1.6
Electric Supply 220V-240V AC, 50 Hz / 9 V, 300 mA
Battery operation 9 V compound battery (optional)
Rechargeable battery (optional)
Operating time 24 h with display background illumination
Operating time 48 h without display background
illumination
loading time 8 h
Interface RS232

PCD-BA-e-1615 7
2 Basic Information (General)
2.1 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.
2.2 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“. (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.
2.3 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 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
2.4 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.

8 PCD-BA-e-1615
3 Basic Safety Precautions
3.1 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.
3.2 Personnel training
The appliance may only be operated and maintained by trained personnel.
4 Transport and storage
4.1 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the
appliance itself when unpacking for possible visible damage.
4.2 Packaging / return transport
Keep all parts of the original packaging for a possibly
required return.
Only use original packaging for returning.
Prior to dispatch disconnect all cables and remove
loose/mobile parts.
Reattach possibly supplied transport securing devices.
Secure all parts such as the glass wind screen, the
weighing platform, power unit etc. against shifting and
damage.

PCD-BA-e-1615 9
5 Unpacking, Setup and Commissioning
5.1 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.
On the installation site observe the following:
•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 and weighing container.
•Do not operate in areas with hazard of explosive material or in potentially
explosive atmospheres due to materials such as gasses, steams, mists or dusts.
•Keep away chemicals (such as liquids or gasses), which could attack and
damage the balance inside or from outside.
•Keep IP protection of the device.
•If electro-magnetic fields or static charge occur, or if the power supply is unstable
major deviations on the display (incorrect weighing results) are possible. In that
case, the location must be changed.
5.2 Unpacking/installation
Carefully remove the balance from the packaging, remove plastic cover and setup
balance at the intended workstation.
Scope of delivery / serial accessories
•Balance
•Weighing plate
•Mains adapter
•Protective cover
•Operating instructions
•Windshield (only models PCD 400-3)

10 PCD-BA-e-1615
Mount the display unit in a way that facilitates operation and where it is easy to see.
1. Display unit assembled
For disassembly remove the assembly sheet by loosening the marked screws.
After that the display unit can be placed freely.
2. Display unit freely placed

PCD-BA-e-1615 11
3. Using with tripod (optional)
In order to raise the display, the display unit can be assembled to an optionally
available tripod (KERN PCD-A03).
Assembly see installation instructions of the tripod.
or
The balance must be installed in a way that the weighing plate is exactly in horizontal
position.
Level balance with foot screws until the air bubble of the
water balance is in the prescribed circle.

12 PCD-BA-e-1615
5.3 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.
5.4 Operation using a rechargeable battery (optional)
Lift-off the battery cover on the lower side of the balance. Connect 9 V compound
battery.
Replace the battery compartment cover.
For battery operation the balance has an automatic switch-off function which can be
activated or deactivated in the menu.
In weighing mode keep the PRINT key pressed until “Unit“ appears.
Press MODE key repeatedly until „AF“ appears.
Use the SET key to confirm.
Use the MODE key to choose between the two following settings:
„AF on“:
In order to save the battery, the balance switches automatically
off after 3 minutes without weighing.
„AF off“:
Switch-off function deactivated.
Use the SET key to confirm selection. The balance returns to weighing mode.

PCD-BA-e-1615 13
The empty battery is indicated on the display by “LO“. Press ON/OFF-key and
replace the battery immediately.
If the balance is not used for a longer time, take out the batteries and store them
separately. Leaking battery liquid could damage the balance.
If there exists an optional rechargeable battery, it has to be connected in the battery
compartment via a separate plug-in socket. Now the mains adapter delivered with
the rechargeable battery must be applied.
5.5 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.
5.6 Initial Commissioning
In order to obtain exact results with the electronic balances, the 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.
Connection of rechargeable battery
Connection of battery

14 PCD-BA-e-1615
5.7 Linearisation
(only models PCD 250-3, PCD 2500-2)
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 weighing scales.
•The test weights to be used must be adapted to the weighing scale’s
specifications; see chapter 3.4 “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 3.4 “Testing instruments control”
Tab. 1: Adjustment points
Adjustment
weight
PCD 250-3 PCD 300-3 PCD 2500-2 PCD 3000-2
1.
50 g
50 g
500 g
500 g
2.
100 g
150 g
1000 g
1500 g
3.
150 g
250 g
1500 g
2500 g
4.
200 g
300 g
2000 g
3000 g
5.
250 g
350 g
2500 g
3500 g
Adjustment
weight
PCD 6K-4 PCD 10K0.1 PCD 10K3
1.
-
-
-
2.
-
-
-
3.
-
-
-
4.
-
-
-
5.
-
-
-
Operation Display
How to carry out linearization:
Switch on balance
Press repeatedly until UNIT is
displayed

PCD-BA-e-1615 15
Press repeatedly until LinEAr is
displayed
Ensure that there are no objects on the
weighing pan.
Start linearisation with . The value of the
first adjustment weight will be displayed.
(example)
Place adjustment weight and acknowledge by
. The scales will change to zero display.
Take away adjustment weight. After a short
time the value of the second adjustment weight
appears in the display.
(example)
Place second adjustment weight and
acknowledge by . The scales will change
to zero display.
Take away adjustment weight. After a short
time the value of the third adjustment weight
appears in the display.
(example)
Place third adjustment weight and
acknowledge by . The scales will change
to zero display.
Take away adjustment weight. After a short
time the value of the forth adjustment weight
appears in the display.
(example)
Place forth adjustment weight and
acknowledge by . The scales will change
to zero display.
Take away adjustment weight. After a short
time the value of the fifth adjustment weight
appears in the display.
(example)

16 PCD-BA-e-1615
Place fifth adjustment weight and acknowledge
by . The scales will change to zero
display.
Take away adjustment weight. After a short
time CAL F is displayed.
Finally the balance will switch off automatically. Now the linearization is concluded
successfully.
In case of an adjustment error or incorrect adjusting weight the display will show an
error message; repeat linearization process.
5.8 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.

PCD-BA-e-1615 17
5.9 Adjustment
The adjustment should be made with the recommended adjustment weight (see
chap. 1 "Technical data"). Adjustment is also possible with the weights of other
nominal values (see table 1), but not the optimum for measuring technique.
Procedure when adjusting:
Observe stable environmental conditions. A warming up time (see chapter 1) is
required for stabilization.
Turn on balance by pressing the ON/OFF key.
Press the MODE key and keep it pressed, in the display appears shortly
„CAL“. After that the exact size appears flashing in the display
(see chapter. 8.3.3) of the adjustment weight.
Now set the adjusting weight in the centre of the weighing plate.
Press the SET key. Short time later there appears „CAL F“, then the automatic
return to the weighing mode. In the display there appears the value of the
adjustment weight.
An error during adjustment or the use of an incorrect adjusting weight will
result in an error message „CAL E“. Repeat adjustment.
Keep the adjustment close to the balance. Daily control of the weighing exactness is
recommended for quality-relevant applications.

18 PCD-BA-e-1615
6 Operating elements
6.1 Overview of display
6.2 Keyboard overview
Key Description Function
PRINT button •Calculate weighing data via interface
•Call up menu (keep key pressed until UNIT appears)
SET button •Confirm settings in the menu
•Save and exit menu
MODE button
•How to select menu items
•Change settings in the menu
•Adjustment
TARE button •Taring
ON/OFF button •Turn on/off

PCD-BA-e-1615 19
7 Basic Operation
7.1 Start-up
ON
OFF
Press ON button.
The balance will carry out a self-test As soon as the
weight display appears, the balance is ready for
weighing.
7.2 Switching Off
ON
OFF
Press OFF button, the display disappears
7.3 Weighing
Place goods to be weighed on balance.
Wait for standstill control, after the standstill control, the
weighing unit appears right hand in the display
(e.g. g or kg)
Read weighing result.
If the material to be weighed is heavier than the
weighing range, the display will show "Error"
(=Overload).

20 PCD-BA-e-1615
7.4 Taring
Place an empty weighing container, the weight of the
weighing container will be displayed.
TA R E
Press the TARE button, the zero display disappears.
The tare weight is saved until it is deleted.
Weigh the material, the net weight will be indicated.
The taring process can be repeated any number of times,
e.g. when adding several components for a mixture
(adding). The limit is reached when the whole weighing
range is exhausted.
After removing the weighing container, the weight of the
weighing container appears as negative display.
The tare weight is saved until it is deleted.
Delete tare
TA R E
Unload the balance and press the TARE button, the zero
display appears.