KERN PES 620-3M User manual

KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: [email protected]
Phone: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Operating instructions
Precision balance
KERN PES/PEJ
Version 1.9
2023-05
GB
TPES-B_TPEJ-B-BA-e-2319

1TPES-B_TPEJ-B-BA-e-2319
GB
KERN PES/PEJ
Version 1.9 2023-05
Operating instructions
Precision balance
Contents
1Technical data................................................................................................ 4
2Declaration of conformity ............................................................................. 7
3Appliance overview ....................................................................................... 8
3.1 Components.............................................................................................................................. 8
3.2 Operating elements................................................................................................................ 10
3.3 Keyboard overview................................................................................................................. 11
3.3.1 Numeric entry ........................................................................................................................... 12
3.4 Display..................................................................................................................................... 13
4Basic Information (General)........................................................................ 15
4.1 Proper use............................................................................................................................... 15
4.2 Improper Use .......................................................................................................................... 15
4.3 Warranty.................................................................................................................................. 15
4.4 Monitoring of Test Resources............................................................................................... 15
5Basic Safety Precautions............................................................................ 16
5.1 Pay attention to the instructions in the Operation Manual ................................................ 16
5.2 Personnel training.................................................................................................................. 16
6Transport and storage................................................................................. 16
6.1 Testing upon acceptance ...................................................................................................... 16
6.2 Packaging / return transport ................................................................................................. 16
7Unpacking, Installation and Commissioning............................................. 17
7.1 Installation Site, Location of Use.......................................................................................... 17
7.2 Unpacking and check............................................................................................................. 18
7.3 Assembling, Installation and Levelling................................................................................ 19
7.3.1 Implantation of the balance ...................................................................................................... 19
7.3.2 Installation of the wind shield ................................................................................................... 20
7.4 Mains connection ................................................................................................................... 21
7.4.1 Installation of the mains adapter .............................................................................................. 21
7.4.2 Turning On the Power .............................................................................................................. 22
7.5 Initial Commissioning ............................................................................................................ 22
7.6 Connection of peripheral appliances ................................................................................... 22
8Menu ............................................................................................................. 23
8.1 Menu <Func> .......................................................................................................................... 23
8.1.1 Menu overview ......................................................................................................................... 23
8.2 Enhanced menu <Func2>...................................................................................................... 24
8.2.1 Menu overview ......................................................................................................................... 24
8.3 Navigation in the menu.......................................................................................................... 25
9Basic Operation ........................................................................................... 26
9.1 Turn on/off............................................................................................................................... 26
9.2 Zeroing .................................................................................................................................... 27
9.3 Taring....................................................................................................................................... 27
9.4 Selection of a weighing application ..................................................................................... 29
9.5 Simple weighing ..................................................................................................................... 29
9.6 Underfloor weighing............................................................................................................... 30
10 Piece counting ............................................................................................. 31

TPES-B_TPEJ-B-BA-e-2319 2
11 Percent weighing......................................................................................... 34
12 Density determination................................................................................. 37
12.1 Density Table for liquids........................................................................................................ 41
12.2 Data output of the specific density to a printer................................................................... 42
13 Weighing with tolerance range................................................................... 43
13.1 Selection of weighing function with tolerance range......................................................... 44
13.2 Set distinction condition........................................................................................................ 44
13.3 Setting the distinction range................................................................................................. 44
13.4 Set the number of tolerance limits ....................................................................................... 45
13.5 Set distinction method........................................................................................................... 45
13.6 Set acoustic signal................................................................................................................. 46
13.7 Set tolerance display.............................................................................................................. 46
13.8 Set data output ....................................................................................................................... 47
13.9 Setting the tolerance values.................................................................................................. 48
13.9.1 Absolute values.................................................................................................................... 48
13.9.2 Differential values................................................................................................................. 51
13.10 Weighing the samples ....................................................................................................... 54
14 Totalization................................................................................................... 55
14.1 Select the Totalizing function ............................................................................................... 55
14.2 Using the totalizing function................................................................................................. 56
14.2.1 TOTAL-Adding ..................................................................................................................... 56
14.2.2 NET-Adding.......................................................................................................................... 57
14.3 Clear the total sum ................................................................................................................. 57
15 Settings......................................................................................................... 58
15.1 Zero-Tracking.......................................................................................................................... 58
15.2 Stability settings..................................................................................................................... 58
15.2.1 Sensitivity............................................................................................................................. 58
15.2.2 Display speed....................................................................................................................... 58
15.3 Bar graph display ................................................................................................................... 58
15.4 Automatic Sleep function...................................................................................................... 59
15.5 Setting the weighing units..................................................................................................... 60
15.6 Date and time.......................................................................................................................... 60
15.6.1 Set display format ................................................................................................................ 60
15.6.2 Setting time and date........................................................................................................... 60
15.7 Automatic switch-on function............................................................................................... 62
16 Enhanced settings....................................................................................... 63
16.1 Balance identification number.............................................................................................. 63
16.2 Measurement incertainty of the external adjustment weight ............................................ 64
16.2.1 Enter measurement incertainty............................................................................................ 64
16.2.2 Take over measurement deviation....................................................................................... 65
17 Adjustment................................................................................................... 66
17.1 Adjustment with internal weight........................................................................................... 66
17.2 Adjustment test with internal weight.................................................................................... 67
17.3 Adjustment with external weight .......................................................................................... 68
17.4 Adjustment test with external weight................................................................................... 69
17.5 Adjustment record.................................................................................................................. 70
18 Verification ................................................................................................... 71
19 Interfaces...................................................................................................... 72
19.1 RS-232C interface for data input and output....................................................................... 72
19.1.1 Technical data...................................................................................................................... 72
19.1.2 Interface cable...................................................................................................................... 73
19.2 DIN8P-interface to the data output....................................................................................... 73
19.2.1 Technical data...................................................................................................................... 73
19.3 Formats of the data output (6/7-digits)................................................................................. 74
19.3.1 Data composition ................................................................................................................. 74
19.3.2 Data description ................................................................................................................... 75

3TPES-B_TPEJ-B-BA-e-2319
19.4 Formats of the data output (special format 1)..................................................................... 77
19.4.1 Data composition ................................................................................................................. 77
19.4.2 Data description ................................................................................................................... 77
19.4.3 Error messages.................................................................................................................... 78
19.5 Formats of the data output (special format 2)..................................................................... 79
19.5.1 Data composition ................................................................................................................. 79
19.5.2 Data description ................................................................................................................... 79
19.5.3 Error messages.................................................................................................................... 80
19.6 Data output formats (CBM).................................................................................................... 81
19.6.1 Data composition ................................................................................................................. 81
19.6.2 Data description ................................................................................................................... 81
19.7 Data input................................................................................................................................ 84
19.7.1 Input format 1....................................................................................................................... 84
19.7.2 Input format 2....................................................................................................................... 86
19.8 Response formats .................................................................................................................. 88
19.8.1 A00/Exx Format ................................................................................................................... 88
19.8.2 ACK/NAK Format................................................................................................................. 88
19.9 Communication settings........................................................................................................ 89
19.9.1 Enable / disable interface and data format .......................................................................... 89
19.9.2 Change communication settings.......................................................................................... 90
19.9.3 Interval output ...................................................................................................................... 92
19.10 Output functions ................................................................................................................ 93
19.10.1 GLP-compliant data output .................................................................................................. 93
19.10.2 Edition of the time stamp...................................................................................................... 94
20 Servicing, maintenance, disposal .............................................................. 95
20.1 Cleaning .................................................................................................................................. 95
20.2 Servicing, maintenance ......................................................................................................... 95
20.3 Disposal................................................................................................................................... 95
21 Instant help for troubleshooting................................................................. 96
21.1 Error messages ...................................................................................................................... 97

TPES-B_TPEJ-B-BA-e-2319 4
1 Technical data
KERN
PES 620-3M
PES 2200-2M
PES 4200-2M
Item no./ Type
TPES 620-3-B
TPES 2200-2-B
TPES 4200-2-B
Readability (d)
0.001 g
0.01 g
0.01 g
Weighing range (max)
620 g
2200 g
4200 g
Reproducibility
0.001 g
0.01 g
0.01 g
Linearity
0.003 g
0.02 g
0.02 g
Stabilization time
3 s
Recommended
adjustment weight, not
added (Category)
500 g (E2)
2 kg (F1)
2 kg (E2);
2 kg (E2)
Warm-up time
4 h
2 h
4 h
Weighing units
g, kg, ct
Smallest part weight at
piece counting
1 mg (under lab
conditions*)
10 mg (under lab
conditions*)
10 mg (under lab
conditions*)
10 mg (under normal
conditions**)
100 mg (under normal
conditions**)
100 mg (under
normal conditions**)
Reference quantities at
piece counting
5, 10, 30, 100
Weighing plate, stainless
steel
140 x 120 mm
200 x 200 mm
200 x 200 mm
Dimensions of housing
(W x D x H) [mm]
220 x 333 x 93
Net weight
3.6 kg
4.4 kg
4.0 kg
Permissible
ambient condition
10 °C to + 30 °C
Humidity of air
80 %
Power supply unit input
voltage
AC 100-240 V; 0.6 A; 50/60Hz
Balance input voltage
12 V
1.0 A
Interfaces
RS-232, Digital I/O
Degree of pollution
2
Overtension class
2
Height meter
Up to 2000 m
Place of installation
Only indoors

5TPES-B_TPEJ-B-BA-e-2319
KERN
PES 6200-2M
PES 15000-1M
PES 31000-1M
Item no./ Type
TPES 6200-2-B
TPES 15000-1-B
TPES 31000-1-B
Readability (d)
0.01 g
0.1 g
0.1 g
Weighing range (max)
6.2 kg
15 kg
31 kg
Reproducibility
0.01 g
0.1 g
0.1 g
Linearity
0.03 g
0,2 g
0,4 g
Stabilization time
3 s
Recommended
adjustment weight, not
added (Category)
5 kg (E2)
10 kg (F1);
5 kg (F1)
20 kg (F1);
10 kg (F1)
Warm-up time
4 h
2 h
2 h
Weighing units
g, kg, ct
Smallest part weight at
piece counting
10 mg (under lab
conditions*)
100 mg (under lab
conditions*)
500 mg (under lab
conditions*)
100 mg (under
normal conditions**)
1 g (under normal
conditions**)
5 g (under normal
conditions**)
Reference quantities at
piece counting
5, 10, 30, 100
Weighing plate, stainless
steel
200 x 200 mm
200 x 200 mm
250 x 220 mm
Dimensions of housing
(W x D x H) [mm]
220 x 333 x 93
220 x 333 x 93
260 x 330 x 113
Net weight
4.4 kg
4.4 kg
10 kg
Permissible
ambient condition
10 °C to + 30 °C
Humidity of air
80 %
Power supply unit input
voltage
AC 100-240 V; 0.6 A; 50/60Hz
Balance input voltage
12 V
1.0 A
Interfaces
RS-232, Digital I/O
Degree of pollution
2
Overtension class
2
Height meter
Up to 2000 m
Place of installation
Only indoors

TPES-B_TPEJ-B-BA-e-2319 6
KERN
PEJ 620-3M
PEJ 2200-2M
PEJ 4200-2M
Item no./ Type
TPEJ 620-3M-B
TPEJ 2200-2M-B
TPEJ 4200-2M-B
Readability (d)
0.001 g
0.01 g
0.01 g
Weighing range (max)
620 g
2200 g
4200 g
Reproducibility
0.001 g
0.01 g
0.01 g
Linearity
0.003 g
0.02 g
0.02 g
Stabilization time
3 s
Verification value (e)
0.01 g
0.1 g
0.1 g
Verification class
I
II
II
Minimum weight (min)
0.1 g
0.5 g
0.5 g
Recommended
adjustment weight, not
added (Category)
internal
Warm-up time
4 h
2 h
4 h
Weighing units
g, kg, ct
Smallest part weight at
piece counting
1 mg (under lab
conditions*)
10 mg (under lab
conditions*)
10 mg (under lab
conditions*)
10 mg (under normal
conditions**)
100 mg (under normal
conditions**)
100 mg (under normal
conditions**)
Reference quantities at
piece counting
5, 10, 30, 100
Weighing plate, stainless
steel
140 x 120 mm
200 x 200 mm
200 x 200 mm
Dimensions of housing
(W x D x H) [mm]
220 x 333 x 93
Net weight
4,4 kg
7 kg
7 kg
Permissible
ambient condition
10 °C to + 30 °C
Humidity of air
80 %
Mains adapter input
voltage
AC 100-240 V; 0.6 A; 50/60Hz
Balance input voltage
12 V
1.0 A
Interfaces
RS-232, Digital I/O
Degree of pollution
2
Overtension class
2
Height meter
Up to 2000 m
Place of installation
Only indoors

7TPES-B_TPEJ-B-BA-e-2319
* * Smallest part weight at piece counting - under lab conditions:
➢There exist perfect environment conditions for high-resolving countings
➢The counted parts have no variance
** Smallest part weight at piece counting - under normal conditions:
➢There are unsteady ambient conditions (draft, vibrations)
➢The counted parts are varying
2 Declaration of conformity
The current EC/EU Conformity declaration can be found online in:
www.kern-sohn.com/ce

TPES-B_TPEJ-B-BA-e-2319 8
3 Appliance overview
3.1 Components
Models up to 15 kg:
Pos.
Designation
1
Weighing plate
2
Wind shield (only models with 620 g)
3
Bubble level
4
Display
5
Keyboard
6
Closing cover for underfloor weighing device
7
Footscrews
8
Mains connection
9
Theft protection
10
RS232 connection
11
DIN8P interface

9TPES-B_TPEJ-B-BA-e-2319
Models with 31 kg:
Pos.
Designation
1
Weighing plate
2
Bubble level
3
Display
4
Keyboard
5
Closing cover for underfloor weighing device
6
Footscrews
7
Mains connection
8
RS232 connection
9
DIN8P interface

TPES-B_TPEJ-B-BA-e-2319 10
3.2 Operating elements
Models up to 15 kg:
Models with 31 kg:

11 TPES-B_TPEJ-B-BA-e-2319
3.3 Keyboard overview
Button
Name
Function in Operating mode
Function in Menu
[ON/OFF]
➢Turn on/off
-
[PRINT]
➢Transmit weighing data via
interface
➢Cancel setting
[CAL]
➢Start adjustment or
adjustment test
-
[S]
➢Adding (when function was
enabled; press key shortly)
➢Open limit value setting
(when weighing with
tolerance range has been
activated; press key
longtime)
➢Open interval setting (when
interval output was
enabled, press key
longtime)
➢Take over setting and close
menu
[F]
➢Change display (press key
shortly)
➢Call-up menu (press key
longtime)
➢Navigation key ➔/ Go to next
menu level
[TARE/ZERO]
➢Taring and zeroing
➢Navigation key / Setting
downwards
[]
-
•Navigation key / Setting
upwards
[]
-
•Navigation key / Setting
downwards
[]
-
•Navigation key ➔/ Go to next
menu level
[]
-
•Navigation key / Menu
level back

TPES-B_TPEJ-B-BA-e-2319 12
LED
Designation
Description
STAND BY
Illuminated green, if the balance is operated with
mains voltage, but being switched off.
SLEEP
Illuminated red, when the balance is in sleep mode.
3.3.1 Numeric entry
Button
Function
Cancel input
Save input and exit
Enter next character
Increase character by 1
Increase character by 1
Decrease character by 1
Enter next character
Select/delete last character
As maximum, the balance can display eight characters

13 TPES-B_TPEJ-B-BA-e-2319
3.4 Display
No.
Display
Designation
Description
1

"Tolerance range weighing"
indicator
Shows in which tolerance
range the weighing result can
be found
2
Asterisk
Indicates that weight value
can be added
3
Stability display
Is displayed when the weight
value is stable
4
Minus
Displays negative values
5
M
Indicator "Process"
Indicates that the balance is
processing data
6

Indicator
Appears in some functions
7
Indicator “zero display”
Displays zero position
8
Bar graph display
Indicates how much the
weighing plate is loaded with
respect to the maximum
weighing range
Shows in which tolerance
range the weighing result can
be found
9
CAL
Indicator “Adjustment”
Is shown during the
adjustment or the adjustment
test
10
Indicator “Time“
Is shown during the date and
time entry
Flashes during the interval
output
11
Indicator „Data output"
Displayed when the balance
is sending data to external
device

TPES-B_TPEJ-B-BA-e-2319 14
No.
Display
Designation
Description
12
Display gross weight value
Displays gross weight
13
Display net weight value
Shown when the tare weight
has been subtracted
14
Σ
"Total" indicator
Shown when the total sum is
displayed
15

Indicator
Appears in some functions
16
Pcs
“Piece counting” indicator
Shown when piece counting
has been enabled
17
%
„Percent Weighing“
Indicator
Is shown when percent
weighing has been enabled
18
Indicator for different
weighing units
Shows different weighing
units in different functions
19
kg
Kilogram
Shows the „Kilogramm“ unit
20
g
Gram
Shows the „Gram“ unit
21
mg
Milligram
Shows the „Milligramm“ unit
22
Marking of non-verifiable
digits
Is displayed for digits that are
not relevant to verification

15 TPES-B_TPEJ-B-BA-e-2319
4 Basic Information (General)
4.1 Proper use
The balance purchased by you is intended to define the weighing value of weighed
goods. 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 pan. As soon
as a stable weighing value is reached, the weighing value can be read.
4.2 Improper Use
•Our balances are non-automatic balances, not provided for the use in dynamic
weighing processes. However, the balances can also be used for dynamic
weighing processes after verifying their individual operative range, and here
especially the accuracy requirements of the application.
•Do not leave permanent load on the weighing pan. This can damage the
measuring mechanism.
•Impacts and overloading exceeding the stated maximum load (max) of the
balance, minus a possibly existing tare load, must be strictly avoided. The
balance could be damaged.
•Never operate the 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 beyond 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
4.4 Monitoring of Test Resources
Within the scope of quality assurance the metrological properties of the balance and
of an existing test weight must be checked at regular intervals. 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.

TPES-B_TPEJ-B-BA-e-2319 16
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 staff.
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 / 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 wind shield, weighing pan, power
unit etc. against shifting and damage.

17 TPES-B_TPEJ-B-BA-e-2319
7 Unpacking, Installation 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.
On the installation site observe the following:
•Place the balance on a firm, level surface.
•Avoid extreme heat as well as temperature fluctuation e.g. 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 appliance to heavy moisture over a longer time period.
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 weighed goods 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.
•In the event of the occurrence of electromagnetic fields, static charges (e.g.,
when weighing / counting plastic parts) and unstable power supply, large
display deviations (incorrect weighing results, as well as damage to the scale)
are possible. Change location or remove source of interference.

TPES-B_TPEJ-B-BA-e-2319 18
7.2 Unpacking and check
Remove the appliance and the accessories from the package, set aside the
packaging material and install the appliance on the working place. Check if all parts
of the scope of delivery are present and free of damage.
Scope of delivery:
Content
Models up to 620 g
Models from 1200 g
to 15 kg
Models with 31 kg
1. Balance
2. Weighing plate
3. Weighing plate support
already pre-installed
4. Wind shield (4 side
parts and 1 upper part)
5. Mains adapter
6. Power plug set
7. Hook / Eyelet
8. Operating instructions

19 TPES-B_TPEJ-B-BA-e-2319
7.3 Assembling, Installation and Levelling
The correct implantation site is important for the accuracy of the weighing
results of high-resolving precision balances (see chap. 7.1).
7.3.1 Implantation of the balance
1. Place the weighing plate support of the balance (in PES 31000-1M the
weighing plate support is pre-installed)
2. Fix the weighing plate support with the screw
3. Put the weighing plate on the weighing plate support
4. Level balance with foot screws until the air bubble of the water balance is in
the prescribed circle
Check levelling regularly
5. Connect the mains adapter (Installation of the mains adapter: see chap.
7.4.1)