PCD 25002 - Kitchen scales Kern - Free user manual and instructions

Product type	Electronic precision balance
Brand	Kern
Model	PCD 25002
Maximum capacity	2500 g
Readability	0.01 g
Reproducibility	0.02 g
Linearity	±0.05 g
Dimensions (L x D x H)	165 x 280 x 73 mm
Net weight	1.6 kg
Power supply	220-240 V AC, 50 Hz (mains adapter) or 9 V battery
Battery life	Approx. 24 h with backlight, 48 h without backlight
Platform	160 x 160 mm
Interface	RS232
Weighing units	g, oz, ozt, tlh, tlt, gn, dwt, mom, tol, ct, FFA
Functions	Weighing, taring, pre-tare, piece counting, total net weight, percentage determination, animal weighing, check weighing
Stability filter	3 adjustable levels
Display backlight	Yes, adjustable (on/off/auto)
Operating temperature	+5°C to +35°C
Max. humidity	80 % non-condensing
Cleaning	Damp cloth with mild soap, avoid harsh chemicals
Warranty	Valid according to conditions (see manual)

Frequently Asked Questions - PCD 25002 Kern

How to turn on the balance?

Press the ON/OFF key. The balance performs a self-test then displays zero. It is then ready to weigh.

How to tare a container?

Place the empty container on the platform, then press the TARE key. The display returns to zero, and the weight of the container is stored as tare.

What to do if the display shows 'LO'?

'LO' means the battery is low. Replace the 9V battery or plug in the mains adapter. If not used for an extended period, remove the battery to prevent leakage.

How to count pieces with this balance?

First tare the container. Press MODE until a reference (5, 10, 25, or 50) flashes. Place the corresponding number of pieces on the platform, then press SET. The balance is now in counting mode.

Why does the weighing result constantly change?

This may be due to air currents, vibrations, or electromagnetic fields. Ensure the balance is on a stable surface and away from drafts. You can also adjust the stability filter in the menu (StAbiL).

How to adjust the display backlight?

In weighing mode, press and hold PRINT until 'Unit' appears. Press MODE several times until 'bl'. Confirm with SET, then choose 'on', 'off', or 'CH' (automatic turn-off after 10 seconds of stability). Confirm with SET.

How to perform adjustment (calibration)?

Press and hold MODE until 'CAL' appears. Place the recommended calibration weight in the center of the platform, then press SET. After a moment, 'CAL F' is displayed and the balance returns to weighing mode. See the manual for recommended weights.

What to do if error message 'Er 1' appears during counting?

'Er 1' indicates that the weight of the reference pieces is below the minimum required weight. Use heavier pieces or increase the number of reference pieces. Consult the technical specifications for the minimum weight per piece.

How to use the animal weighing function?

In the menu, set 'ANL' to the desired duration (3, 5, 10, or 15 seconds). Place the animal on the balance and press SET. The balance calculates an average over the set time and displays a stable result.

How to transfer data to a PC?

Connect the balance to the PC via the RS232 port. Set the interface parameters (baud rate, transfer mode) in the menu under 'Pr'. Use a suitable cable (max 2 m) and a terminal software to receive data.

USER MANUAL PCD 25002 Kern

Further language versions you will find online under www.kern-sohn.com/manuals

Pin 2: Transmit data
Pin 3:Receive data
Pin 5: Signal ground

1 Technical data 4
2 Basic Information (General) 7
2.1 Proper use 7
2.2 Improper Use 7
2.3 Warranty 7
2.4 Monitoring of Test Resources 7
3 Basic Safety Precautions 8
3.1 Pay attention to the instructions in the Operation Manual 8
3.2 Personnel training 8
4 Transport and storage 8
4.1 Testing upon acceptance 8
4.2 Packaging / return transport 8
5 Unpacking, 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
6 Operating elements 18
6.1 Overview of display 18
6.2 Keyboard overview 18
7 Basic 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

8 Menu 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

9 Data 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

11 Instant help 45

10.1 Cleaning 44
10.2 Service, maintenance 44
10.3 Disposal 44
12 Declaration of -Conformity 46

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)	250 g (F1)	350 g (F1)
Details about „Selection of adjustment weight“ see chap. 8.3.3
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
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)	2500 g (F1)	3 kg (F1)
Details about „Selection of adjustment weight“ see chap. 8.3.3
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

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)	6000 g (F1)	10 kg (F1)	10 kg (M1)
Details about „Selection of adjustment weight“ see chap. 8.3.3
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

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.

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.

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)

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

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.

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.

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.

Connection of rechargeable battery
Connection of battery

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.

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	0.000g
Press PRINT repeatedly until UNIT is displayed	UNIT
Press repeatedly until LinEAr is displayed	LINEAR
Ensure that there are no objects on the weighing pan.
Start linearisation with SET/M. The value of the first adjustment weight will be displayed.	50.000g example)
Place adjustment weight and acknowledge by SET/M. The scales will change to zero display.	0g
Take away adjustment weight. After a short time the value of the second adjustment weight appears in the display.	100.000g example)
Place second adjustment weight and acknowledge by SET/M. The scales will change to zero display.	0g
Take away adjustment weight. After a short time the value of the third adjustment weight appears in the display.	150.000g example)
Place third adjustment weight and acknowledge by SET/M. The scales will change to zero display.	0g
Take away adjustment weight. After a short time the value of the forth adjustment weight appears in the display.	200.000g example)
Place forth adjustment weight and acknowledge by SET/M. The scales will change to zero display.	0g
Take away adjustment weight. After a short time the value of the fifth adjustment weight appears in the display.	250.000g example)
→ Place fifth adjustment weight and acknowledge by the scales will change to zero display.	0g
→ Take away adjustment weight. After a short time CAL F is displayed.	CAL F
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.

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.

6 Operating elements

6.1 Overview of display

6.2 Keyboard overview

Key	Description	Function
PRINT	PRINT button	Calculate weighing data via interfaceCall up menu (keep key pressed until UNIT appears)
SET/M	SET button	Confirm settings in the menuSave and exit menu
MODE/CAL	MODE button	How to select menu itemsChange settings in the menuAdjustment
TARE	TARE button	Taring
ON/OFF	ON/OFF button	Turn on/off

7 Basic Operation

7.1 Start-up

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

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).

7.4 Taring

Place an empty weighing container, the weight of the weighing container will be displayed.

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

Unload the balance and press the TARE button, the zero display appears.

7.5 Pre-Tare function

Using this function the weight of a tire vessel is stored. Even after turning off/on the weighing balance will continue working with the saved tire value.

In weighing mode put tare vessel on the weighing plate
Press repeatedly the MODE key until „PtArE“ flashing appears.
Use SET key to store the current weight on the weighing plate as a PRE-TARE value.

Delete PRE-TARE value

Unload the balance and set the TARE button to zero
Press repeatedly the MODE key until „PtArE“ flashing appears.
Use the SET key to confirm. The PRE-TARE value is deleted, the zero display appears.

7.6 Plus/minus weighings

For example unit weight control, fabrication control etc.

Put the nominal weight on the weighing plate and tare using the TARE button.
Remove the nominal weight
Put the test objects subsequently on the weighing plate, the respective deviation from the nominal weight is displayed with the respective sign to ^+ and -

According to the same procedure also packages with the same weight can be produced, referring to a nominal weight.

Back to weighing mode by pressing the TARE button.

7.7 Parts counting

During piece counting parts can either be counted into a container or out of a container. To count a greater number of parts the average weight per part has to be determined with a small quantity (reference quantity).

The larger the reference quantity, the higher the counting exactness. High reference must be selected for small parts or parts with considerably different sizes.

The larger the reference quantity, the more accurate the parts counting.

The process has four steps:

Tare the weighing container

Determine the reference unit

Original weighing of reference weight

Count the items

i

In weighing mode press MODE key shortly. Reference piece number 5^PCS_ appears flashing.
By pressing the MODE button several times other reference quantities 5, 10, 20, 25 and 50 can be called up. Place as many pieces to count on the weighing plate as the set reference quantity requires.
Use the SET key to confirm. The balance is now in parts counting mode counting all units on the weighing plate.

• Back to weighing mode by pressing the MODE button.
• Error message „Er 1“
• Piece below minimum weight of piece (See chpt. 1 "Technical specifications"): Press MODE key and restart reference determination.
• Taring
• The tare vessels can also be used for piece counting.
• Before starting piece counting use the TARE button to tare out the container.

7.8 Net-total weighing

It is useful if a mixture of several components is weighed into a tare vessel and finally the sum weight of all weighed components is necessary for control purposes (net-total, i.e. the weight of the tare vessel).

Example:

1. Place tare container on the weighing plate. Press the TARE button, the zero display disappears.
2. Weigh-in component 0 . Press the SET button, the zero display disappears. [▲] is displayed on the right border of the display.
3. Weigh-in component 2 and press SET key. Net-total (sum weight of the components 0 and 2) is displayed.
4. Press the SET button, the zero display disappears.
5. Weigh-in component and press SET key. Net-total (sum weight of the components 1 and 2 and 3.) is displayed.
   If necessary, also fill the formula up to the desired final value. For every component more repeat the steps 4-5.
   Back to weighing mode by pressing the TARE button.

7.9 Percent determination

Percentage calculation facilitates weight display in percent related to a reference weight equivalent to 100% .

In weighing mode press MODE key repeatedly, until "100% " is displayed flashing.
Put a reference weight which corresponds to 100% .
Store by pressing the SET key. If the display stops flashing, remove the reference weight.
Place goods to be weighed on balance. The weight of the sample is displayed in percentage in terms of the reference weight.

Back to weighing mode by pressing the MODE button.

8 Menu

8.1 Navigation in the menu

Access to menu PRINT 0.00g Unit	In weighing mode keep the PRINT key pressed until „Unit“ appears.
How to select menu items MODE CAL Unit Pr	Using the MODE key the individual menu items can be selected one after the other.
Change settings SET M Pr R-ECr Pr-PC	Acknowledge selected menu item using SET key, the current setting is displayed. Change the settings using the MODE key. At any pressing of the MODE key, the next setting is displayed, see chapter .8.2 „Menu Overview".
1. Save change of a menu item and exit the menu SET M 0.00g	⇒ Press the SET key; balance will return to weighing mode.

2. Change settings of several menu items

Acknowledge selected menu item using SET key, the current setting is displayed.

Use the MODE key to change settings.

Press the TARE key, „Exit“ is displayed.

Either

Acknowledge with SET key (yes), "StorE" is displayed. Save (SET key) or reject (PRINT key) and exit the menu,

or

Press PRINT key (no) and make the changes on the other menu items as described above

Save/reject and exit the menu

Save

Reject

Either

Any changes carried out are stored by pressing the SET key (yes). The balance returns automatically into weighing mode.

or

To cancel changes, press the PRINT key (no). The balance returns automatically into weighing mode.

8.2 Menu overview

Description of function	Function	Parameters	Description of options
Weighing units switching over (see chap. 8.3.1)	UNIT	g*	Gram
		oz	Pound
		ozt	Ounce
		ct	Carat (dependent on model)
		tlh	Tael Hongkong
		ttl	Tael Taiwan
		gn	Grain (dependent on model)
		dwt	Pennyweight (dependent on model)
		mo	Momme
		Tol	Tola
		FFA	Freely selectable factor
Data transfer mode (see chapter 8.4.1)	PR	rE CR*	Data output via remote control commands (see chapter . 9.3)
		Pr PC	Data output by pressing the PRINT key (see chapter 9.3)
		AU PC	Continuous data output (see chapter 9.3)
		bA Pr	Printout on barcode printer (see chapter 9.4)
		AU Pr	Autom. data output of stable weighing values (see chapter 9.3)
Selection printer output (see chapter 8.4.2)	LAPr	Hdr*	Edition of the headlines
		GrS	Edition of the total weight
		Net	Issue of net weight
		tAr	Issue of tare weight
		N7E	Edition of the stored weight
		PCS	Edition of quantity
		AUJ	Issue of piece weight
		Rqt	Edition of the reference quantity
		FFd	Issue of a page forward feed when printout is started
		FFE	Issue of a page forward feed when printout is ended
Baud rate (see chap. 8.4.4)	bAUd	19200
		9600*
		4800
		2400
		1200
Auto off (battery operation), see (chap. 5.4)	AF	on*	Automatic switch-off function after 3 min without changing load ON
		off	Automatic switch-off function after 3 min without changing load OFF
Auto Zero (see chapter 8.3.2)	tr	on*	On
		off	Off
Selection adjustment weight (see chapter 8.3.3)	CAL	400	*dependent on model
		4000
Filter function (see chapter 8.3)	StAbiL	1	Fast display
		2	Normal display
		3	Slow display
Linearisation (see chapter 5.7)	LinEAr		*dependent on model
Background illumination of the display, (see chap. 8.3.4)	bL	on*	Background illumination on
		off	Background illumination off
		CH	The background illumination will be switched off automatically 10 sec after having reached a stable weighing value.
Animal weighing function (see chapter 8.3.5)	ANL	off*	Off
		3	Period 3 seconds
		5	Period 5 seconds
		10	Period 10 seconds
		15	Period 15 seconds
Foot switch (see chap. 8.3.6)	FOOt S	tAr	Tare balance by pressing the foot switch
		Pr	Print the weighing value by pressing the foot switch
Reset to factory setting (see chap. 8.3.7)	rSt	no*	no
		yes	yes

* = default setting

8.3 Description of individual menu items

8.3.1 Weighing Units

In weighing mode keep the PRINT key pressed until [Unit] appears.

Press SET key, the selected unit is displayed.
Use the MODE key to select between the different units (see following table).
Use the SET key to confirm the selected unit

	Display	Conversion factor * 1 g =
Gram	g	1.
Ounce	oz	0.035273962
Troy ounce	ozt	0.032150747
Tael Hongkong	tlh	0.02671725
Tael Taiwan	tlt	0.0266666
Grain (dependent on model)	gn	15.43235835
Pennyweight (dependent on model)	dwt	0.643014931
Momme	(mom)	0.2667
Tola	tol	0.0857333381
Carat (dependent on model)	ct	5
Freely selectable factor *)	FFA	xx.xx

*) Input conversion factor

As specified above, press repeatedly the MODE key until „FFA“ appears.
To enter the factor, press the SET key; the enabled digit starts flashing.

Using the MODE button, the displayed value is increased by 1, with the PRINT button it is reduced by 1.

With the TARE key selection of the number to the left.

Confirm input by pressing the SET key.
Press repeatedly the SET key to take over the „Freely selectable factor" as current weighing unit.

8.3.2 Dosing and Zero-tracking

The Auto-Zero function is used to tare small variations in weight automatically.

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).

When apportioning involves small variations of weight, it is advisable to switch off this function.

If Zero-Tracking however is switched off, the weighing display becomes more busy.

In weighing mode keep the PRINT key pressed until "Unit" appears.
Press the MODE button several times until tr^ is displayed.
Acknowledge using SET key, the current setting is displayed.
Select the desired settings by pressing the MODE key.

tr	on	Function activated
tr	off	Function deactivated

Use the SET key to confirm selection.

8.3.3 Selection of adjustment weight

In the model series KERN PCD, the adjustment weight can be selected from pre-set nominal values (refer also to following table, factory setting with grey background). In order to achieve high-quality weighing results in the sense of the measuring technology, it is recommended to select the nominal value as high as possible. The non delivered adjustment weights can be purchased from KERN as option.

In weighing mode keep the PRINT key pressed until [Unit] appears.
Press the MODE key several times until "CAL" is displayed.
Acknowledge using SET key, the current setting is displayed.
Select the desired settings by pressing the MODE key.
Use the SET key to confirm selection.

Possible Adjustment Points:

Adjustment Points	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 Points	PCD 6K-4	PCD 10K0.1	PCD 10K3
1.	1 kg	2 kg	2 kg
2.	2 kg	5 kg	5 kg
3.	5 kg	7 kg	7 kg
4.	6 kg	10 kg	10 kg
5.	-	-	-

8.3.4 Filterfunction (except PCD 10K-3)

This menu item allows the balance to be set according to specific ambient conditions and measuring purposes.

(Example)

In weighing mode keep the PRINT key pressed until [Unit] appears.
Press the MODE button several times until „StAbiL“ is displayed.
Acknowledge using SET button, the current setting is displayed.
Select the desired settings by pressing the MODE button.

1	Filter 1: The balance reacts quickly and in a sensitive manner, quiet set-up location.
2	Filter 2: The scale reacts normally, normal installation site
3	Filter 3: The balance reacts slowly and in a robust manner, busy set-up location

Use the SET key to confirm selection.

8.3.5 Display background illumination

In weighing mode keep the PRINT key pressed until "Unit" appears.
Press the MODE button several times until bl^ is displayed.
Acknowledge using SET key, the current setting is displayed.
Select the desired settings by pressing the MODE key.

bl	on	Background illumination switched on	Contrastful display which can also be red in the darkness.
bl	off	Background illumination switched off	Battery saving
bl	Ch	The background illumination will be switched off automatically 10 sec after having reached a stable weighing value.	Battery saving

Use the SET key to confirm selection.

8.3.6 Animal weighing function

The animal weighing function can be applied for busy weighings. During a defined period the mean value of the weighing results is formed.

The more unquiet the weighed item, the longer the period should be selected.

In weighing mode keep the PRINT key pressed until "Unit" appears.
Press the MODE button several times until „ANL“ is displayed.
Acknowledge using SET key, the current setting is displayed.
Select the desired settings by pressing the MODE key

ANL	3	Period 3 seconds
ANL	5	Period 5 seconds
ANL	10	Period 10 seconds
ANL	15	Period 15 seconds
ANL	off	Animal weighing not active

Use the SET key to confirm selection.
Put the weighing good (animal) on the weighing plate and press the SET button. In the display runs a „Countdown“. The average value of the weighing results is displayed and remains displayed on the screen.
Use the SET key to change between animal weighing and normal weighing.
Press the SET key to restart the weighing cycle for animal weighing.

8.3.7 Foot switch

The foot switch is used to send the weighing values to a printer or to a PC. Alternatively can also be tared.

Connection and operation see in the operating instructions supplied with this foot switch.

8.3.8 Reset to factory setting

This function resets all balance settings to factory setting.

In weighing mode keep the PRINT key pressed until "Unit" appears.
Press the MODE button several times until _rSt^ is displayed.
Acknowledge using SET key, the current setting is displayed.
Select the desired settings by pressing the MODE key

rSt	yes	Balance will be reset to factory setting.
rSt	no	The balance keeps its individual setting

Use the SET key to confirm selection. The balance returns to weighing mode.

8.4 Interface parameters

Data output is carried out via interface RS 232 C.

General

The previous condition for the data transfer between balance and a peripherical device (e.g. printer, PC ...) is that the appliances are set to the same interface parameters (e.g. baud rate, transfer mode ...).

8.4.1 Data transfer mode

In weighing mode keep the PRINT key pressed until "Unit" appears.

Press the MODE button several times until Pr^ is displayed.

Acknowledge using SET key, the current setting is displayed.
Select the desired settings by pressing the MODE key

rE CR	Data output via remote control commands
Pr PC	Data output using the PRINT key
AU PC	Continuous data output
bA Pr	Output on bar code printer
AU Pr	Autom. data output of stable weighing values

Use the SET key to confirm selection. The balance returns to weighing mode.

8.4.2 Printout

Using this function data are selected which are to be sent via the RS232C (not valid for data transfer mode BAPr).

In weighing mode keep the PRINT key pressed until "Unit" appears.
Press the MODE key several times until „LAPr“ is displayed.
Acknowledge using SET key, the current setting is displayed.
Select the desired output parameter by pressing the MODE key

Hdr	Edition of the headlines
GrS	Edition of the total weight
Net	Edition of net weight
tAr	Edition of tare weight
N7E	Edition of the stored weight
PCS	Edition of quantity
AUJ	Edition of piece weight
Rqt	Edition of the reference quantity
FFd	Edition of a page forward feed when printout is started
FFE	Edition of a page forward feed when printout is ended

After actuating the SET button, the current state is displayed (on/off).
Use MODE and PRINT key to change the status on off.
Use the SET key to confirm selection. The balance returns to weighing mode.

By that way the user can configure his own data block, which then is sent to a printer or to a PC.

8.4.3 Printout example

line1		Page forward feed when started
line 2		Edition of the headlines
line 3
line 4
line 5
G	135.81 g	Total weight
N	28.27 g	Net weight
T	1.49 g	Tare weight
M	12.25 g	Saved weight
P	5 pcs	Quantity
A	5.63 g	Piece weight
R	2 pcs	Reference quantity
		Page forward feed when ended

8.4.4 Baud rate

The baud rate defines the transfer speed via the interface, 1 Baud = 1 Bit/second.

In weighing mode keep the PRINT key pressed until "Unit" appears.
Press the MODE key several times until "bAUd" is displayed.
Acknowledge using SET key, the current setting is displayed.
Use MODE key select the desired settings

9600 4800 2400 1200 19200

Use the SET key to confirm selection. The balance returns to weighing mode.

9 Data output RS 232 C

9.1 Technical data

• 8-bit ASCII Code
  1 start bit, 8 data bits, 1 stop bit, no parity bit
  Baud rate selectable at 1200, 2400, 4800, 9600 and 19200 Baud
• Miniature plug-in necessary (9 pole D-Sub)
• For operation with interface faultless operation is only ensured with the correct KERN - interface cable (max. 2m)

9.2 Pin allocation of balance output bushing:

Front view:

Pin 2: Transmit data

Pin 3:Receive data

Pin 5: Signal ground

9.3 Explanation of the data transfer

Pr PC

Press the PRINT key, at stable weight the format is transferred from LAPR.

a. Format for stable values for weight/quantity/percentage

1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
M	S	N1	N2	N3	N4	N5	N6	N7	N8	N9	N10	B	U1	U2	U3	CR	LF

b. Format in case of fault

As soon as the weighing value is stable, the format is automatically transferred from LAPR.

c. Format for stable values for weight/quantity/percentage

1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
M	S	N1	N2	N3	N4	N5	N6	N7	N8	N9	N10	B	U1	U2	U3	CR	LF

d. Format in case of fault

The weighing values are sent automatically and continuously, no matter if the value is stable or unstable.

e. Format for stable values for weight/quantity/percentage

1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
M	S	N1	N2	N3	N4	N5	N6	N7	N8	N9	N10	B	U1	U2	U3	CR	LF

f. Format in case of fault

The remote control commands s/w/t are sent from the remote control unit to the balance as ASCII code. After the balance having received the s/w/t commands, it will send the following data.

Take into account that the following remote control commands must be sent without a subsequent CR LF.

s Function: Stable weighing value for the weight is sent via the RS232 interface

w Function: Weighing value for the weight (stable or unstable) is sent via the RS232 interface

t Function: No data are sent, the balance carries out the hare function.

h. Format for stable values for weight/quantity/percentage

1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
M	S	N1	N2	N3	N4	N5	N6	N7	N8	N9	N10	B	U1	U2	U3	CR	LF

i. Format in case of fault

M Blank or M
S	Space character or negative sign (-)
N1 ... N10	10 numeric ASCII codes for weight values including decimal places or blanks
U1 ... U3	3 ASCII codes for weighing unit pcs. / % / or blank
B Blank
E, o, r ASCII code or “E, o, r”
CR Carriage Return
LF (Line Feed)

9.4 Output on bar code printer

The data transfer mode has to be set on „BA Pr“ (chapter 8.4.1).

As bar code printer the Zebra printer model LP2824 is provided.

Take into account that the output format of the balance is fixedly defined and cannot be changed.

The printer format is stored in the printer, i.e. in case of a failure the printer cannot be changed with a new one from factory, previously it is necessary that KERN installs the respective software.

The Zebra printer and the balance must be connected to the delivered interface cable when they are switched off.

After switching-on both appliances, and after reaching the status ready-for-operation, a label will be printed out when pressing the PRINT button.

10 Service, maintenance, disposal

10.1 Cleaning

Before any maintenance, cleaning and repair work disconnect the appliance from the operating voltage.

Please do not use aggressive cleaning agents (solvents or similar agents), but a cloth dampened with mild soap suds. Take care that the device is not penetrated by fluids and polish it with a dry soft cloth.

Clean the stainless-steel parts with a soft cloth soaked with a cleaning agent suitable for stainless steel.
For stainless steel parts do not use any cleaning agents which contain sodium hydroxide solution, acetic, hydrochloric, sulphuric or citric acid.
Do not use metal brushes or cleaning sponges of steel wool, as this causes superficial corrosion.

10.2 Service, maintenance

The appliance may only be opened by trained service technicians who are authorized by KERN.
Ensure that the balance is regularly calibrated, see chap. Testing instruments control.

10.3 Disposal

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.

11 Instant help

In case of an error in the program process, briefly turn off the balance and disconnect from power supply. The weighing process must then be restarted from the beginning.

Help:

Fault Possible cause

The displayed weight does not glow.

• The balance is not switched on.
• The mains supply connection has been interrupted (mains cable not plugged in/faulty).
• Power supply interrupted.
  Battery is inserted incorrectly or is empty.
• No batteries inserted.

The displayed weight is permanently changing

• Draught/air movement
  Table/floor vibrations
• The weighing plate is in contact with foreign matter.
• Electromagnetic fields / static charging (choose different location/switch off interfering device if possible)

The weighing value is obviously wrong

The display of the balance is not at zero
- Adjustment is no longer correct.
- Great fluctuations in temperature.
- Electromagnetic fields / static charging (choose different location/switch off interfering device if possible)

Should other error messages occur, switch balance off and then on again. If the error message remains inform manufacturer.

12 Declaration of -Conformity

To view the current EC/EU Declaration of Conformity go to:

www.kern-sohn.com/ce

KERN PCD

Version 1.5 09/2016

Mode d'emploi

Pin 5: Signal ground