KERN PBJ 620-3NM 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 balances
KERN PBS/PBJ
Type PBJ 620-3NM
Type PBJ 4200-2NM
Type PBJ 6200-2NM
Type PBJ 8200-1NM
Version 1.8
2017-08
GB
PBS/PBJ-BA-e-1718

3 PBS/PBJ-BA-e-1718
GB
KERN PBS/PBJ
Version 1.8 2017-08
Operating instructions
Precision balances
Contents
1Technical data ................................................................................................... 6
2Declaration of conformity............................................................................... 10
3Appliance overview......................................................................................... 11
3.1 Keyboard overview.............................................................................................12
3.1.1 Numeric entry................................................................................................................... 13
3.1.2 Setting the decimal point when entering numerical values ............................................. 14
3.2 Overview of display ............................................................................................15
4Basic Information (General) ........................................................................... 16
4.1 Proper use...........................................................................................................16
4.2 Improper Use.......................................................................................................16
4.3 Warranty..............................................................................................................16
4.4 Monitoring of Test Resources............................................................................17
5Basic Safety Precautions................................................................................ 17
5.1 Pay attention to the instructions in the Operation Manual ..............................17
5.2 Personnel training ..............................................................................................17
6Transport and storage .................................................................................... 17
6.1 Testing upon acceptance...................................................................................17
6.2 Packaging............................................................................................................17
7Unpacking, Setup and Commissioning......................................................... 18
7.1 Installation Site, Location of Use.......................................................................18
7.2 Unpacking / Scope of delivery...........................................................................18
7.3 Placing.................................................................................................................20
7.4 Mains connection................................................................................................24
7.5 Switch power supply on.....................................................................................24
7.6 Connection of peripheral devices......................................................................25
7.7 Initial Commissioning.........................................................................................25
8Adjustment....................................................................................................... 26
8.1 Manual adjustment by CAL button....................................................................26
8.1.1 Adjustment with internal weight (only models PBJ)......................................................... 26
8.1.2 Adjustment with external weight (factory setting models PBS) ....................................... 28

PBS/PBJ-BA-e-1718 4
8.2 Adjustment test...................................................................................................30
8.2.1 Adjustment test with external weight ............................................................................... 31
8.2.2 Adjustment test with internal weight ................................................................................ 33
8.3 Automatic adjustment by PSC (Perfect Self Calibration), only models PBJ...34
8.4 Automatic adjustment by Clock-CAL (model PB only) ....................................35
8.5 ISO/GLP log.........................................................................................................37
8.5.1 Setting of adjustment protocol and scale identification number ...................................... 37
9Verification....................................................................................................... 39
10 Basic Operation ........................................................................................... 40
10.1 Switch on off balance.........................................................................................40
10.1 Zeroing ................................................................................................................40
10.2 Simple weighing..................................................................................................41
10.3 Taring...................................................................................................................42
10.4 Underfloor weighing...........................................................................................43
11 The menu...................................................................................................... 44
11.1 Navigation in the menu.......................................................................................44
11.2 Useful functions..................................................................................................47
11.2.1 Recall of last menu...................................................................................................... 47
11.2.2 Resetting the menu ..................................................................................................... 47
11.3 Menu Lock...........................................................................................................48
12 Set the installed clock................................................................................. 49
12.1 Date......................................................................................................................49
12.2 Time .....................................................................................................................50
12.3 Setting the display for the standby mode.........................................................51
13 Functions for adaptation to ambient conditions....................................... 52
13.1 Stability and reaction (average value)...............................................................52
13.1.1 Automatic mode........................................................................................................... 52
13.1.2 Filling mode ................................................................................................................. 52
13.1.3 Standard mode............................................................................................................ 52
13.1.4 Antivibration mode....................................................................................................... 52
13.1.5 Antiwind mode............................................................................................................. 52
13.2 Stability Detection Band.....................................................................................53
13.3 Tracking...............................................................................................................53
14 Capacity display........................................................................................... 53
15 Switch-over weighing unit .......................................................................... 54
15.1 Percentage conversion.......................................................................................55

5 PBS/PBJ-BA-e-1718
16 Application Functions ................................................................................. 56
16.1 Parts counting.....................................................................................................56
16.2 Control weighing and target weighing ..............................................................57
16.2.1 Control weighing (comparator) display type 1............................................................. 57
16.2.2 Control weighing (comparator) – display type 2.......................................................... 57
16.2.3 Target weighing mode................................................................................................. 58
16.3 Density determination ........................................................................................58
16.4 Extreme value recording ....................................................................................58
16.5 Auto Print function .............................................................................................59
16.6 Automatic zero setting .......................................................................................60
16.7 Zero range...........................................................................................................60
16.8 Taring /printing at stability (models PBJ)..........................................................60
16.9 Formulation mode...............................................................................................61
16.10 Automatic saving and zeroing .......................................................................62
16.11 Animal weighing..............................................................................................63
17 Data output................................................................................................... 64
17.1 Personal Computer - RS-232C ...........................................................................64
17.1.1 Connecting the Cable.................................................................................................. 64
17.2 Data Formats.......................................................................................................65
1. For measuring values:............................................................................................65
2. For „oL“ or „-oL“ ....................................................................................................65
17.3 Using codes of commands.................................................................................66
17.4 User Settings.......................................................................................................71
17.4.1 Overview...................................................................................................................... 71
17.4.2 Handshaking................................................................................................................ 71
17.4.3 Format ......................................................................................................................... 72
17.4.4 Speed of communication............................................................................................. 72
17.4.5 Parity / Bit length ......................................................................................................... 72
17.4.6 Stop Bits ...................................................................................................................... 72
17.4.7 Limiter.......................................................................................................................... 72
18 Service, maintenance, disposal.................................................................. 73
18.1 Clean....................................................................................................................73
18.2 Service, maintenance .........................................................................................73
18.3 Disposal...............................................................................................................73
19 Instant help................................................................................................... 74

PBS/PBJ-BA-e-1718 6
1 Technical data
KERN (Type) PBJ 620-3NM
Trademark PBJ 620-3M
Readability (d) 0.001 g
Weighing range (max)
620 g
Minimum load (Min) 0.1 g
Verification value (e)
0.01 g
Verification class I
Reproducibility 0.001 g
Linearity ± 0.002 g
Stabilization time 2.5 sec.
Warm-up time 4 h
Adjustment weight internal
Weighing units
(calibrated appliances) g, kg, pcs, %
Smallest part weight for
piece counting
1 mg
Reference quantities at
piece counting 5, 10, 20, 50 100, 200
Weighing plate, stainless
steel 108 x 105 mm
Dimensions caisse
(l x L x h) [mm] 209 x 322 x 78
Dimensions wind screen
[mm] interior 180 x 193 x 87
exterior 202 x 228 x 103
Net weight (kg) 3.7 kg
Permitted environmental
condition +10° C to +30° C
Humidity of air max. 80 % relative (not condensing)
Interface RS-232
Underfloor weighing device Hooks
AC adapter (Primary)
AC 100 -240 V, 400 mA 50/60Hz
Rated electric power supply DC 12 V, 1 A
Pollution Degree
2
Overvoltage Category Category II
Altitude Up to 2000 m
Installation Site device may only be used indoors

7 PBS/PBJ-BA-e-1718
KERN (Type) PBJ 4200-2NM PBJ 6200-2NM PBJ 8200-1NM
Trademark PBJ 4200-2M PBJ 6200-2M PBJ 8200-1M
Readability (d) 0.01 g 0.01 g 0.1 g
Weighing range (max) 4.2 kg 6.2 kg 8.2 kg
Minimum load (Min) 0.5 g 1 g 5 g
Verification value (e) 0.1 g 0.1 g 1 g
Verification class II I II
Reproducibility 0.01 g 0.01 g 0.08 g
Linearity ± 0.02 g ± 0.02 g ± 0.1 g
Warm-up time 4 h 4 h 2 h
Stabilization time 2.5 sec. 2.5 sec. 1.2 sec.
Adjustment weight internal
Weighing units
(calibrated appliances) g, kg, pcs, %
Smallest part weight for
piece counting 10 mg 100 mg
Reference quantities at
piece counting 5, 10, 20, 50 100, 200
Weighing plate, stainless
steel 170 x 180 mm
Dimensions caisse
(l x L x h) [mm] 209 x 322 x 78
Net weight (kg) 4.8 kg
Permitted environmental
condition +10° C to +30° C
Humidity of air max. 80 % relative (not condensing)
Interface RS-232
Underfloor weighing device Hooks
AC adapter (Primary) AC 100 -240 V, 400 mA 50/60Hz
Rated electric power supply DC 12 V, 1 A
Pollution Degree 2
Overvoltage Category Category II
Altitude Up to 2000 m
Installation Site device may only be used indoors

PBS/PBJ-BA-e-1718 8
KERN PBS 420-3M PBS 620-3M
Readability (d)
0.001 g
0.001 g
Weighing range (max) 420 g 620 g
Minimum load (Min)
0.02 g
0.1 g
Verification value (e) 0.01 g 0.01 g
Verification class II I
Reproducibility 0.001 g 0.001 g
Linearity ± 0.002 g ± 0.002 g
Stabilization time 2.5 sec. 2.5 sec.
Warm-up time 4 h 4 h
Recommended adjustment
weight, not added (class) 400 g (E2) 600 g (E2)
Possible Adjustment Points 100 – 420 g 100 – 620 g
Weighing units
(calibrated appliances) g, kg, pcs, %
Smallest part weight for
piece counting
0.001g
Reference quantities at
piece counting
5, 10, 20, 50 100, 200
Weighing plate, stainless
steel 108 x 105 mm
Dimensions caisse
(l x L x h) [mm] 209 x 322 x 78
Dimensions wind screen
[mm] interior 180 x 193 x 87
exterior 202 x 228 x 103
Net weight (kg) 3 kg
Permitted environmental
condition +5° C to +40° C
Humidity of air max. 80 % relative (not condensing)
Interface RS-232
Underfloor weighing device Hooks
AC adapter (Primary) AC 100 -240 V, 400 mA 50/60Hz
Rated electric power supply DC 12 V, 1 A
Pollution Degree
2
Overvoltage Category Category II
Altitude
Up to 2000 m
Installation Site device may only be used indoors

9 PBS/PBJ-BA-e-1718
KERN PBS 4200-2M PBS 6200-2M PBS 8200-1M
Readability (d) 0.01 g 0.01 g 0.1 g
Weighing range (max) 4.2 kg 6.2 kg 8.2 kg
Minimum load (Min) 0.5 g 1 g 5 g
Verification value (e) 0.1 g 0.1 g 1 g
Verification class II I II
Reproducibility 0.01 g 0.01 g 0.1 g
Linearity ± 0.02 g ± 0.02 g ± 0.2 mg
Warm-up time 4 h 4 h 2 h
Stabilization time 2.5 sec. 2.5 sec. 1.2 sec.
Recommended adjustment
weight, not added (class) 4 kg (E2) 5 kg (E2) 7 kg (E2)
Possible Adjustment Points 1000 – 4200 g 1000 – 6200 g 1000 – 8200 g
Weighing units
(calibrated appliances) g, kg, pcs, %
Smallest part weight for
piece counting 10 mg 100 mg
Reference quantities at
piece counting
5, 10, 20, 50 100, 200
Weighing plate, stainless
steel 170 x 180
Dimensions caisse
(l x L x h) [mm] 209 x 322 x 78
Net weight (kg) 3 kg
Permitted environmental
condition +5° C to +40° C
Humidity of air max. 80 % relative (not condensing)
Interface RS-232
Underfloor weighing device Hooks
AC adapter (Primary) AC 100 -240 V, 400 mA 50/60Hz
Rated electric power supply DC 12 V, 1 A
Pollution Degree 2
Overvoltage Category Category II
Altitude Up to 2000 m
Installation Site device may only be used indoors

PBS/PBJ-BA-e-1718 10
2 Declaration of conformity
To view the current EC/EU Declaration of Conformity go to:
www.kern-sohn.com/ce
The scope of delivery for verified weighing balances (= conformity-
rated weighing balances) includes a Declaration of Conformity.

11 PBS/PBJ-BA-e-1718
3 Appliance overview
Models with readability d = 0.001 g:
Models with readability d ≥ 0.01 g:
1. Windshield
2. Weighing pan
3. Display
4. Keyboard
5. Levelling screw

PBS/PBJ-BA-e-1718 12
3.1 Keyboard overview
In weighing mode:
Button Description
Pressed once and released
Keep pressed for about 3
seconds
[ON/OFF]
Switches between the
operation and standby
modes.
Exit menu / Return to
weighing mode
[CAL] Invokes adjustment or
menu selection. (*1) To display the menu element recently set.
[TARE] Taring / Setting to zero No operation
[UNIT] Switch over weighing unit
(*3) No operation
[PRINT]
Issue of weighing value to
external appliances
(printer, PC)
Issue of date and time to
external appliances.
*1 This key is used to set a value when percent (%), number of pieces (PCS), specific weight
of solids (▼d) or specific weight of liquid (d) is displayed.
*3 Units different than „g” must be first set in the balance, before they can be used for
measurements. Only gram (g), percent (%) and number of pieces (PCS) are factory set.
ESC
ON/OFF
MENU
CAL
TARE /
UNIT
PRINT

13 PBS/PBJ-BA-e-1718
In menu:
Button Description
Pressed once and released
Keep pressed for about 3
seconds
[ON/OFF] To return to a submenu or
weighing mode. Return to weighing mode
[CAL] Moves to the next menu item. To display the menu
element recently set.
[TARE] To select or set the menu
element recently displayed. No operation
[UNIT]
Entering numeric values:
Increases the numeric value
of flashing digit by 1. No operation
[PRINT] Entering numeric values: To
go to the next position. No operation
3.1.1 Numeric entry
Button
Description
Function
Navigation button Increase flashing digit
Navigation button Digit selection to the right
Navigation button Confirm entry
ESC Cancel input
•With numerical input the indicator [#] appears.
•„SET“ indicates that the value has been saved successfully.
•„ERR“ means that the value could not be saved successfully; back to menu
by and repeat enter.
ESC
ON/OFF
MENU
CAL
TARE /
UNIT
PRINT

PBS/PBJ-BA-e-1718 14
3.1.2 Setting the decimal point when entering numerical values
Entering a decimal point is necessary only for determining the specific gravity or if a
multiplier shall be defined for the user-defined unit.
•Repeat actuating the button until the last digit flashes. Actuate the
button again in order to call up the decimal point setting mode. The reversed
triangle symbol ▼or the current decimal point flashes.
•Actuate the button in order to move the decimal point to the required
position by one digit each.
•Actuate the button to define the position of the decimal point. The
message „SEt“ which appears for a short period of time indicates that setting
has been completed.
PRINT
PRINT
UNIT
TARE /

15 PBS/PBJ-BA-e-1718
3.2 Overview of display
Display
Designation
Description
Indicates that the weighed value is stable. (*1) It marks the
currently selected element during menu element selection.
Tare symbol
Informs about setting an initial tare value.
Weight symbol
It is displayed during adjusting the measuring range. It indicates
adjusting settings during menu selection. Flashes prior to start of
automatic adjustment.
Note:
If automatic adjusting of measuring range is not activated, a user
must perform it when this symbol flashes.
•with built-in weight (PBJ models refer to chapter 8.31.1)
•
with external weight (PBS models refer to chapter 8.1.2).
[ ]
Brackets
The non-calibrated value is given in brackets in calibrated scales.
Number symbol
Indicates numeric value entry.
Menu symbol Appears during menu selection. Always shown when the menu is
locked.
Asterisk
Indicates that the displayed numeric value is not a mass value.
Communication
symbol
Is lit up during communication with external appliances via RS-
232C cable. Shown when communication functions are ON.
▼
Inverse triangle
symbol
Indicates the setting of specific weight measurement. It is used
as an alternative to the decimal point.
→0←
Zero indicator
Animal symbol
Shows the setting of animal weighing function.
Automatic storage
and zeroing symbol
Shows the setting of automatic saving and zeroing function.
M
Memory Symbol
Balance is in formula mode
Auto Print symbol
Displays set-up of the Auto Print function.
Standby mark
Appears when the balance power supply is in stand-by mode. It
is also displayed when operational function changes into stand-by
mode.
*1 Stabilisation symbol
When the stabilisation symbol is illuminated for a long time, the displayed value may oscillate when a
weight is slowly changed or stabilisation detection range is set to high value.
Capacity display
Display of units
Stability display

PBS/PBJ-BA-e-1718 16
4 Basic Information (General)
4.1 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 balcance”, i.e. the
material to be weighed is manually and carefully placed in the centre of the weighing
pan.. As soon as a stable weighing value is reached the weighing value can be read.
4.2 Improper Use
Do not use balance for dynamic add-on weighing procedures, if small amounts of
goods to be weighed are removed or added. The “stability compensation“ installed in
the balance may result in displaying an incorrect measuring value! (Example: Slowly
draining fluids from a container on the balance.)
Do not leave permanent load on the weighing pan. This may damage the measuring
system.
Impacts and overloading exceeding the stated maximum load (max) of the 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.
4.3 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

17 PBS/PBJ-BA-e-1718
4.4 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.
5 Basic Safety Precautions
5.1 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.
5.2 Personnel training
The appliance may only be operated and maintained by trained personnel.
6 Transport and storage
6.1 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the
appliance itself when unpacking for possible visible damage.
6.2 Packaging
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.

PBS/PBJ-BA-e-1718 18
7 Unpacking, Setup and Commissioning
7.1 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:
•Operate the device only indoors.
•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.
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.
7.2 Unpacking / Scope of delivery
Remove device and accessories carefully from packaging, remove packaging
material and place device at the planned work place. Verify that there has been no
damage and that all packing items are present.

19 PBS/PBJ-BA-e-1718
Scope of delivery / serial accessories:
Models with readability d = 0.001 g: Models with readability d ≥ 0.01 g:
•Mains adapter
•Operating instructions
•Menu overview
Carrier weighing pan
Protective cover
Weighing pan
2 Fixiing screws
Protection hood
Wiindshield
2 screws
Main weighing unit

PBS/PBJ-BA-e-1718 20
7.3 Placing
Remove transport guard (models PBJ)
To loosen the transport guard, turn both transport screws [1] anti-clockwise until they
are locked (refer to sign [2]).
For transport, turn both transport screws clockwise until they are locked.
Mount safety hood
Remove protective foil from adhesive strips and mount the safety hood so that it does
not contact the weighing plate.

21 PBS/PBJ-BA-e-1718
Levelling
Turn in all three foot screws [1] as far as they go.

Slightly press down the left front side of the scale and turn out the two
front foot screws until the air bubble [3] in the spirit level [2] is within the
prescribed circle.
While continuing to exert a slight pressure to the front side of the scale,
turn out the rear foot screw until the scale stands in stable position.
Check levelling regularly.