Sartorius WZG Series User manual

Operating Instructions
Sartorius WZG
WZG Weigh Cells
98648-013-54

2
Contents: CD ROM
– WZConf Program:
Configuration Software for WZG Weigh Cells
Documents:
– Installation Instructions for WZG Weigh Cells (this document)
– Operating Instructions: WZConf Configuration Software
(in English)
– CANopen Interface
– xBPI interface
RS-232 Interface with Sartorius xBPI Protocol (in English)

2Contents: CD ROM
3Intended Use and
System Description
4Warnings and Safety Precautions
5Explanation of the Model Number
6General View of the Equipment
7Installation
7 Storage and Shipping Conditions
7 Incoming Inspection
7 Equipment Supplied
7 Installation Instructions
7 Connecting the Weigh Cell to a PC
8 Connecting the Weigh Cell to AC
Power
9 Attaching the User-Specific
Transducer
10 Removing the Transport Locking
Device
10 Optional Transport Locking Device
Operation
11 Information on Using Weigh Cells
12 Calibration/Adjustment
12 Optional Below-Cell Weighing
12 Optional Motor Connection
13 Factory Settings (Setup)
13 Parameter Settings (Overview)
15 RS-232 Interface Port
15 xBPI Operating Mode
15 xBPI Commands (Overview)
17 Pin Assignment Chart
17 Cabling Diagram
18 Optional Data Interface:
CANopen
19 Care and Maintenance
19 Instructions for Recycling
20 Overview
20 Specifications
21 Dimensions (Scale Drawings)
22 Accessories (Options)
Inside Back Cover
Pocket for storing the bolts and
clamp from the transport locking
device
3
Contents
The WZ weigh cells have been developed
for:
– Installation in measuring devices and
production machinery
– Installation in automated production
and testing systems
– High-precision weighing within limited
space
– Precise weight determination on active
production lines
These compact weigh cells can be used
to determine weights within restricted
space.
The housing is made of stainless steel
and is easy to clean.
The weigh cells are available in various
versions which cover the capacity range
of 1 kg to 20 kg.
The weigh cells function according to
the principle of electromagnetic force
compensation and feature a patented,
cutting-edge, completely monolithic
design. This rugged technology delivers
the highest weight resolution along with
the greatest accuracy and shortest
response times.
Signal processing is completely internal
via a high-performance microprocessor
within the weigh cell, which also handles
digital filtering, control and communica-
tion.
The regulator and digital filters enable
the weigh cell to be adapted to the
production conditions at the location
where the unit is used.
An auto-zero function that can be
deactivated is a standard feature on all
weigh cells.
All weigh cells can be equipped with an
optional motor decoupling device.
The weigh cell is equipped with the
following interface:
– RS-232 with the Sartorius xBPI
protocol
– Optional:
Fieldbus interface (CAN bus)
Technical Features
– Maximum load capacity
from 1 kg to 20 kg
– Dead load range from 0 kg to 40 kg
(depending on model)
– Internal processing speed: 2 kHz
– 24 VDC supply
– Configurable dynamic filter
– Auto-zero function can be switched off
– Stainless steel housing
Intended Use
and
System Description

§Once it has been installed, the weigh cell
must be checked for the following:
– Compliance with directives and stan-
dards for electrical apparatus
– Electromagnetic compatibility of the
complete weighing instrument
– Compliance with mandatory safety regu-
lations
§To prevent damage to the equipment,
read these installation instructions thor-
oughly before using your weigh cell.
§These installation instructions describe
only the technological specifications of
the weigh cell and the conditions that
must be observed during installation.
!Always make sure the equipment is dis-
connected from power before perform-
ing any installation, maintenance or
repair work.
!The equipment may be opened only by
authorized service technicians who have
been trained by Sartorius and who fol-
low Sartorius' standard operating proce-
dures for maintenance and repair work.
!Make absolutely sure to disconnect the
electronics module from power before
you connect or disconnect any electron-
ic peripheral devices (e.g., PC or SPS) to
or from the data interfaces.
!Do not use this equipment in hazardous
areas, zones exposed to explosive gases
or dusts, nor areas exposed to potential-
ly explosive materials.
!Avoid exposing the weigh cell to any
forces that could adversely affect weigh-
ing results or damage the equipment.
!Use of the weigh cell in areas where
medical equipment is operated is not
permitted.
!Any incoming inspection or installation
work that does not conform to the
instructions in this manual will result in
forfeiture of all claims under the manu-
facturer's warranty.
!If you use electrical equipment in instal-
lations and under ambient conditions
subject to stricter safety standards, you
must comply with the provisions as
specified in the applicable regulations
for installation in your country.
– Warning regarding commercially avail-
able interface cables:
RS-232 cables purchased from other
manufacturers often have incorrect pin
assignments for use with Sartorius
equipment. Be sure to check the pin
assignments against the chart in these
instructions before connecting the cable,
and disconnect any lines identified dif-
ferently from those specified by Sarto-
rius.
– Note on installation:
The operator shall be responsible for any
modifications to Sartorius equipment or
connections of cables not supplied by
Sartorius and must check and, if neces-
sary, correct these modifications. On
request, Sartorius will provide informa-
tion on the minimum operating specifi-
cations (in accordance with the stan-
dards for defined immunity to
interference).
$If there is visible damage to the equip-
ment or power cord, disconnect the
equipment from power and contact your
Sartorius dealer to replace the weigh cell
and electronics module.
– Do not expose the equipment un-
necessarily to extreme temperatures,
aggressive chemical vapors, moisture,
shocks, or vibration.
$If you have any problems with the
equipment, contact your local Sartorius
office, dealer or service center.
For OEM customers, the general
Sartorius OEM service guidelines apply.
Hotline
§For technical advice regarding the con-
struction, specifications or installation of
these weigh cells, please contact your
local Sartorius office or the Sartorius
Hotline directly:
Phone: [phone]
Fax: [phone]
4
Warnings and Safety Precautions

5
Key to Model Numbers
$The model number printed on the manufacturer's label indicates the features with which the weigh cell has been equipped.
Below is an example of how to interpret the model number:
Order information Weigh cell: WZG-10S AN2 T10 Mo2 P10 I65 TR1 U0 A27 (Example)
Maximum load Application
1S: 1 kg AN2: Weighing: static
2S: 2 kg
10S: 10 kg
20S: 20 kg
Dead load range [kg]
WZG-1S WZG-2S WZG-10S WZG-20S
T0: 0 – 4 0 – 4 T10: 0 – 13 T20: 0 – 13
T1: 4 – 6.2 4 – 6.2 T11: 13 – 17 T21: 26 – 40
T2: 6.2 – 8 T12: 17 – 20
T3: 8 – 10.2 T13: 20 – 25
T4: 10.2 – 12.2
T5: 12.2 – 14
T6: 14 – 16
Motor decoupling device
Mo0: Without motor decoupling device
Mo2: With motor decoupling device Length of interface cable
P10: 3 meters
P11: 6 meters
P12: 9 meters
IP protection rating Transport locking device
I44: IP44 TR0: Without transport locking device
I65: IP65 TR1*: With transport locking device
Port for below-cell weighing Interfaces
U0: Without port A27: RS-232
U1*: With port A28: RS-232 & CANopen
* = Please note: Options TR1 and U1 cannot be combined.

6
General View of the Equipment
2
6
5
8
1
4
3
10
7
5
9
6
Pos. Designation
1 Load receptor
2 Screws for load receptor
3 Only for service technicians: preload setting
4 Transport locking device
5 Data interface: RS-232
Pos. Designation
6 DC jack
7 Motor decoupling device
8 Optional: CANopen bus interface: male connector
9 Optional: CANopen bus interface: female connector
10 Optional: Control for motor decoupling device

The weigh cells are available in various
versions. If you have ordered special
options, the weigh cells are equipped
with the specified features at the factory.
The model label indicates which features
have been configured (see the section
entitled “Key to Model Numbers").
Storage and Shipping Conditions
– Once the equipment has been removed
from the packaging, it may lose accuracy
if subjected to strong vibration.
Excessively strong vibration may
compromise the safety features of
the equipment.
– Do not expose the equipment unneces-
sarily to extreme temperatures, moisture,
shocks, or vibration.
$It is a good idea to save the box and all
parts of the packaging until you have
successfully installed your equipment.
Only the original packaging provides the
best protection for shipment.
$Before packing your equipment for
shipment, unplug all connected cables
to prevent damage.
!The equipment must be packed in the
original packaging for relatively long-
distance shipping. Use of other packa-
ging will void the Sartorius warranty.
$Do not expose the equipment to
gravitational acceleration in excess of
0300 m/s2(unless additional equipment
is installed on the load receptor that
enables it to withstand this force). Please
keep in mind that this level of accelera-
tion can be caused just by firmly placing
the weigh cell on a rigid surface.
Incoming Inspection
The customer shall inspect the product
and packaging, without undue delay,
upon delivery for proper functioning,
completeness, and absence of defects.
This is to be performed in an incoming
inspection within 10 days of delivery of
the product. The incoming inspection
must take place before the equipment is
installed. Any obvious defects, errors,
or incorrect delivery must be reported in
writing. Defects detected at a later date
must be reported in writing immediately
upon detection.
Be sure to perform the following as part
of the incoming inspection:
– We recommend performing a repeatabi-
lity test using an auxiliary draft shield to
make sure the weigh cells were not
damaged in transport. You can use the
configuration software included with the
weigh cell as an aid for this test.
7
Installation
Equipment Supplied
– Weigh cell
– DC jack (Hirschmann)
– Configuration software
– Interface: RS-232
– Interface cable: weigh cell to PC
– Installation instructions (this document)
– Special accessories as listed on the bill of
delivery, if ordered, or in accordance
with specific arrangement.
Installation Instructions
The equipment is designed to provide
reliable results under normal ambient
conditions. If you have any questions or
difficulties when developing your weigh-
ing system, please contact the specialists
at Sartorius. When designing and setting
up your weighing system, please observe
the following so that you will be able to
work with added speed and accuracy:
– Avoid exposing the equipment to the
effects of extremely high temperatures;
for example, caused by other electronic
components, heaters or direct sunlight.
– Protect the equipment from drafts that
come from open windows or doors.
– Avoid exposing the equipment to
excessive vibrations during weighing;
for example, caused by motors or valves.
– Protect the equipment from aggressive
chemical vapors.
– Do not expose the equipment to
extreme moisture.
Switch the system to the standby mode
when not in use.
!Always calibrate the weigh cell after
transport.
– Equipment installed on the load receptor
can interfere with the weigh cell func-
tions. The operator of the equipment
accepts all liability for production release
and the overall specifications of the
particular system. The overall specifica-
tions attained by your system may differ
from the specifications listed for the
weigh cell in these instructions.
Conditioning the Equipment:
Moisture in the air can condense on the
surface of a cold weighing instrument or
other device whenever it is moved to a
substantially warmer place. If you trans-
fer the equipment to a warmer area,
make sure to condition it for about
2 hours at room temperature, leaving it
unplugged from AC power.
Connecting the Weigh Cell to a PC
– Plug in the male connector on the
interface cable supplied as follows:
12-pin round connector in RS-232
interface on the weigh cell and
9-contact D-SUB in COM interface on
the PC

Connecting the Weigh Cell to AC Power
§Check the voltage rating and the plug design.
If they do not match your local rating or standard, contact your supplier.
Use only:
– Genuine Sartorius AC adapters or power supplies, or
– AC adapters or power supplies approved by an authorized technician
$Power is supplied over the DC jack (Hirschmann connector).
If the voltage specified on the label or the plug design of the AC adapter does not match
your local rating or standard, please contact your nearest Sartorius office or dealer.
$Supply voltage:
The weigh cell can be operated with a supply voltage of 12V to max. 26V.
!The power connection must be made in accordance with the regulations applicable in your
country.
Safety requirements for operation of the evaluation electronics connected to a safety
extra low voltage (SELV) source:
The external power supply must meet the requirements of EN 61010-1, Section 6: “Protec-
tion Against Shock Current." Please also refer to the specifications for classification of
electrically operated equipment in EN 61010-1, Appendix H.
Safety Precautions:
The power supply must be rated to safety extra low voltage (SELV) or grounded (earthed)
safety extra low voltage (SELV-E).
An AC adapter rated to Class 2 can be plugged into any wall outlet with no additional safe-
ty precautions required. The ground terminal is connected to the weigh cell housing. The
electronics module must be grounded for operation. The data interface is also electrically
connected (grounded) to the weigh cell housing.
Pin assignment for the connector:
Pin 1: “plus"
Pin 2: “minus"
EMC requirements:
The connector is designed for DC connections between equipment that is not connected to
a DC power supply. The cable length must not exceed 3 m.
To use an external power supply, the power source must meet the requirements of
EN61326. The following standards apply:
Fast transients IEC61000-4-4
Surge voltage IEC 61000-4-5
Conductive HF signals IEC61000-4-6
Built-in connector on weigh cell Type G 30 A 5 M
Socket for the above connector Type G 30 KW 3 F 2m, G 30 W 3 F
(supplied)
Available from:
Hirschmann Electronics GmbH & Co.
Stuttgarter Strasse 45-51
72654 Neckartenzlingen
Germany
Connecting Electronic Peripheral Devices
§Make absolutely sure to unplug the weigh cell from AC power before you connect or
disconnect a peripheral device (display and control unit or PC) to or from the interface
port.
8
Dimensions in mm

9
Warm-up Time
The amount of warm-up time required depends in part on the system in which the weigh
cell is installed. To deliver exact results, the weigh cell must warm up for at least 30 minu-
tes after it is switched on. Only after this time will the device have reached the required
operating temperature.
Attaching the User-Specific Transducer
§Attach any user-specific transducer to the threaded fastener (M8) on the load receptor and
tighten it as indicated in the table below listing the torque values.
!Make sure the user-specific transducer is rigid and firmly attached to the load receptor.
Maximum torque for load receptor screws and user-specific transducer:
Model MxMyMzFx, approx. Fy, approx. Fz, approx.
WZG1, WZG2 40 Nm 50 Nm 46 Nm 400 N 400 N 300 N
WZG10 40 Nm 50 Nm 56 Nm 800 N 800 N 600 N
WZG20 40 Nm 50 Nm 56 Nm 1000 N 1000 N 1000 N
Permanently installed weigh cells
– Adjust the weigh cell after it has been installed in the system in its permanent location (see
page 12).
The weigh cell must be adjusted again any time the location or position of the weighing
system is changed.
– For optimum operation, install the weigh cell in a horizontal position.
§3 fastening screws (see arrows): 3x M12 and 12 mm deep
§The base plate should be separated from the fastening plate on the weigh cell by spacers
on the screws.
§Placing the base plate flat onto the unit without spacers will cause mechanical tension and
result in malfunction of the weigh cell.
1) Base plate of the weigh cell
2) Spacers
3) Fastening device for the system
§How to attach the plate using M12 screws:
Attach the plate to the threaded fasteners on the weigh cell: torque should be at least
24 Nm

Removing the Transport Locking Device on WZG-1 and WZG-2 Weigh Cells:
§To remove the plate, loosen and remove the screws.
§Hold the clamp (1) at the top and pull it outward.
§Pull out the 2 bolts (2).
§Replace the plate and fasten it using the 4 screws.
$Save the clamp and bolts, and place them inside the pocket located on the last page of
these instructions.
Optional Transport Locking Device
$Purpose: The optional transport locking device is used to secure the weigh cell for trans-
port. This is useful if the unit is mounted on an anti-vibration balance table or if a device
(such as a belt conveyor) is attached to the load plate.
$If the weigh cell is installed in a system with an anti-vibration balance table:
Ensure that these screws are easily accessible throughout the entire system configuration.
To loosen the transport locking device:
§Unscrew the 4 yellow plastic plugs.
§Remove the 4 hexagon socket screws (M6 x 30).
§Afterwards, replace the 4 plastic plugs.
10

Information on Using
Weigh Cells
Handling of Samples and Containers
Samples should be acclimatized to the
temperature of the weigh cell to avoid
negative effects on results, such as
measurement errors and fluctuations
caused by air buoyancy resulting from
convection currents across the surface
of the sample.
These negative effects increase as the
volume and/or surface area of the sam-
ple increases. For this reason, the size
of the container should be appropriate
for the sample.
When designing a draft shield device,
steps must be taken to keep the increase
in temperature within the weighing
chamber to a minimum (e.g., using
a bypass).
11
Operation
Weighing Electrostatically Charged
Samples or Containers
If a sample or container is electrostati-
cally charged, significant errors may
result during weighing. Materials with
low conductivity, such as glass, plastic
or filters, are particularly susceptible to
static electricity (resulting, e.g., from
friction) because the weighing pan can
discharge the static electricity only very
slowly.
The result is a force action between the
charge on the sample and the perma-
nently installed parts of the weigh cell.
This causes the readout to fluctuate
constantly.
Ionization can be applied to make the
air around the sample conductive. This
allows the charge to be compensated
through the air or discharged through
the ground (grounded).
Aside from purely mechanical solutions
(e.g., using a special weighing pan to
shield the system), bombarding the
sample with ions of opposing polarity
to neutralize the surface charge is one
of the most effective methods for elimi-
nating static electricity. Sartorius can
provide ionization devices for installa-
tion in weighing systems.
The area around the weigh cell can also
contain charges that negatively affect
the accuracy of weighing results.
Appropriate steps taken in the design of
a draft shield device can counteract
such effects.
Weighing Magnetic or Magnetizable
Samples
For technical reasons, the use of mag-
netizable materials in the manufacture
of weigh cells is unavoidable, primarily
because the operating principle of high-
resolution weigh cells is based on com-
pensation of the load through magnetic
forces.
When weighing magnetic or magnetiza-
ble samples or containers, interaction
between the sample or container and
certain parts inside the weigh cell may
distort the weighing results.
To keep such effects to a minimum, we
recommend increasing the distance
between the sample/container and the
weighing system using a non-magnetic
material. The force is reduced quadrati-
cally with the increase in distance.

Calibration/Adjustment
Calibration/adjustment can be performed as follows:
– Using control commands sent in xBPI mode by the WZConf configuration software from
Sartorius installed on a computer (see page 15 for the commands).
Optional Below-Cell Weighing
Purpose
A port for a below-cell weighing is located on the bottom of the weigh cell.
§Remove the cover plate. Threaded fastener for hook: M6
§Carefully install the spacing bolts included with the weigh cell: max. torque: 3 Nm
§Carefully install the hook included as standard equipment: max. torque: 3 Nm
$If necessary, install a shield for protection against drafts.
!This reduces the IP protection rating to IP32.
Optional Motor Drive Connection
Purpose
If you wish to install a transport device on the load plate, you can have the weigh cell
equipped at the factory with a connection for an asynchronous drive motor by indicating
your requirements when you place your order. With this option, the supply voltage for the
motor does not affect the weighing system.
Specification
– Connection values: asynchronous motor power supply and drive
For each phase: L1 (black)/L2 (black)
L3 (brown)
Inom 625 mAeff
Imax 2Aeff (for at least 3 sec)
Umax 400Veff
P < 0.75 kW
Signal and control lines S1 (white)/S2 (white)
Imax 50 mA
Umax 42 V
Protective grounding conductor (protective earth; PE)
(green and yellow)
Imax 2 A
Impedance: < 0.3 ohms
Provide fuse protection for the connected motor with max. 16A as described in EN 6010
– Connecting cable: SI-TPE, highly flexible, black; oil resistant, ozone
resistant, 6 x 0.5 mm2(copper tinned)
RAL color-coded wires: 2 white (S1/S2), 2 black (L1/L2), 1 brown (L3);
1 green and yellow (PE)
The wires for the junction box are connected to the
wires for the motor drive inside the weigh cell.
Wire outer diameter: 2.2 mm
Ohmic resistance at 20°C max. 40.1 ohms/km (as described in DIN VDE* 0812)
Nominal voltage 300/500V
– If the connected motor is powered via a frequency converter, interference may be caused
by emission of electromagnetic radiation. Please observe the recommendations of the
manufacturer or supplier of the frequency converter. The person or persons responsible
for installation shall be responsible for the elimination of any interference.
* VDE = Association for Electrical, Electronic & Information Technologies
12

Purpose
The weigh cell is configured at the fac-
tory. The factory settings can be adap-
ted to your special requirements with
the “WZConf" configuration software.
Factory Settings for Menu Parameters
The factory-set configurations are iden-
tified by an “ο" in the list below.
Preparation
$Using the WZConf configuration soft-
ware from Sartorius installed on a com-
puter, you can process the operating
menu parameters as follows:
– read
– edit
– print
– save
$The “Adapt filter to ambient conditions"
option affects the speed with which the
display is updated. To set the maxi-
mum weighing cycle, select “Very stable
conditions."
13
Factory Settings (Setup)
Parameter Settings (Overview)
οFactory setting
√User-defined setting
Operating menu Adaptation to ambient conditions Very stable conditions
οStable conditions
Unstable conditions
Very unstable conditions
Application filter οStandard weighing mode (filter on)
(Adaptation to Application) Manual filling (filter with faster reaction to minor changes)
Weighing with computer-aided filling processes
Checkweighing mode
Stability range ο0.25 digit
0.5 digit
The stability symbol remains 1 digit
displayed when the value 2 digits
is stable in this range (+/–). 4 digits
8 digits
Stability (symbol) delay No delay
οShort delay
Long delay
Extremely long delay
Tare conditions οAt any time
Not until the readout is stable
Auto-zero function οAuto zero on
Auto zero off

Operating menu Weight unit οGrams [g]
Display accuracy οBasic accuracy
(Adapt measured values) Resolution reduced when load changes
Index +1
Index +2
Index +3
Increase resolution by a factor of 10
Selecting an οExternal adjustment/calibration with factory-set weight value
adjustment function
Confirm calibration/ Transfer weight value automatically
adjust. weight οTransfer weight value manually
Zero-setting range 1% of the maximum capacity
ο2% of the maximum capacity
Power on zero range οFactory setting (3%-5% of the max. load; depends on model)
2% of the maximum load
Power on tare/zero function Active
οInactive
Only for zeroing
14

Purpose
The weigh cells are equipped with a
data interface for connection to a com-
puter or other peripheral device.
Computer
You can connect a computer to change,
start and monitor weigh cell functions.
Preparation
§Please see the pin assignment chart and
cabling diagram on page 17.
xBPI Operating Mode
For information on the basic functions
of the interface in Sartorius xBPI mode,
please see the enclosed CD-ROM. Please
observe the detailed information about
the individual commands. The available
functions of this weigh cell and associa-
ted commands are listed in the follow-
ing section:
15
Features
Type of interface: Serial interface
Operating mode: Full duplex
Standard: RS-232
Transmission rate: 9600 baud
Parity: Odd
Character format: Start bit, 7-bit ASCII, parity, 1 stop bit
Handshake mode: Hardware, 2 characters after CTS
Operating mode: xBPI
RS-232 Interface Port
xBPI Commands (Overview)
Command Function Selection
no.
Device information:
Read software version 0x00
Read factory number 0x01
Read weigh cell model 0x02
Read user ID 0x03
Write user ID 0x04
Read OEM text 0x05
Read manufacturer 0x07
Read configuration data 0x0A
Read balance info 0x0F
Metrological data:
Read max 0x0C
Area 0 00
Area 1 01
Area 2 02
Area 3 03
Read increment D 0x0D
Area 0 00
Area 1 01
Area 2 02
Area 3 03
Command Function Selection
no.
Tare and zeroing functions:
Delete tare 0x13
Delete tare 00
Delete appl tare 1 01
Delete appl tare 2 02
Initiate combined tare function 0x14
Abort combined tare function 0x15
Initiate tare 0x16
Abort tare 0x17
Initiate zeroing 0x18
Abort zeroing 0x19
Initiate appl tare 0x1A
Appl tare 1 01
Appl tare 2 02
Abort appl tare 0x1B
Appl tare 1 01
Appl tare 2 02
Read appl tare 0x1C
Appl tare 1 01
Appl tare 2 02
Write appl tare 0x1D
Preset tare 1 01
Preset tare 2 02

16
Command Function Selection
no.
Weight output:
Read net weight with
standard resolution 0x1E
Read net weight with
increased resolution 0x1F
Net weight
(Standard resolution) 00
Net weight
(10x resolution) 01
Net weight
(100x resolution) 02
Read gross weight with
standard resolution 0x20
Read gross weight with
increased resolution 0x21
Gross weight
(Standard resolution) 00
Gross weight
(10x resolution) 01
Gross weight
(100x resolution) 02
Read tare 0x22
Presettings:
Read weighing mode 0x26
Write weighing mode 0x2C
Very stable conditions 01
Stable conditions 02
Unstable conditions 03
Very unstable conditions 04
Read menu from EEPROM 0x46
Save menu in EEPROM 0x47
Read user memory (ISI scratch) 0x4A
Write user memory (ISI scratch) 0x4B
Read stop flags 0x54
timeless menu index 00
Read parameter table Ox55
Timeless menu index 00
Write parameter table 0x56
Timeless menu index 00
Value 00
Command Function Selection
no.
Calibration and adjustment functions:
Start adjustment 0x28
Set preload 112
Delete preload 113
Accept weight 114
Determine internal calibration weight 116
External adjustment with user-defined weight 117
External adjustment with default weight 119
Internal adjustment 120
External linearization with default weight 122
External linearization with user-defined weight 123
Abort adjustment 0x29
Read temperature sensors 0x76
Temp. sensor 0 00
Temp. sensor 1 01
Temp. sensor 2 02
Temp. sensor 3 03
Read adjustment unit 0x78
Write adjustment unit 0x79
Grams 02
Kilograms 03
Carats 04
Status of weigh cell:
Read gross bar graph 0x2F
Read balance status block 0x30
Read balance status 0x32
Read time stamp 0x35
Read on/off status 0x36
Read cycle time 0x57
Basic functions:
Reconfiguration 0x40
Reset temporary errors 0x41
Initiate reset 0x58
Warm start / menu reset 00
Cold start / power-up reset 01
Data interface:
Set baud rate 0x5c
9600 baud 00
19200 baud 01
38400 baud 02
57600 baud 03
Read SBN address 0x71
Write SBN address 0x72

Female interface connector:
12-contact, round female connector
with screw-lock hardware
Compatible male connector:
Type C091D, 12-pin, round male
connector with screw-lock hardware,
Amphenol (IP65), Sartorius round male
connector, order no.: 69QC0010
17
Pin Assignment Chart:
12-pin. round Signal RS-232
connector Adapter xBPI)
A Ext. GND
B Data output (T+D)
C Data input (R+D)
D Data terminal ready (DTR)
E Signal GND
F Not connected
G Not connected
H Clear to send (CTS)
J Not connected
K Not connected
L Not connected
M Not connected
Provide a low-resistance connection
between shield and connector casing.
Pin Assignment Chart
Wiring Diagram
For connecting a computer or other peripheral device to the weigh cell using the RS-232C/V24
protocol and cable lengths of up to 15 m (approx. 49 ft.)
Important: Do not connect any other pins in the weigh cell.
Weigh cell, 12-pin, round Computer, 9-pin
T+D B 2
R+D C 3
CTS H 4
DTR D 8
6
GND E 5
Cable type: AWG 24 specification
Provide a low-resistance connection between shield and connector casing.

Interface:
5-contact, M12, A-coded
Male connector Female connector
Pin Assignment Chart:
5-contact D-Submini:
Pin Signal Description
1 (CAN_SHLD) Optional CAN shielding
2 (CAN_V+) Optional external positive CAN supply
(to supply tranceivers and optocouplers if bus nodes are electrically isolated)
3 CAN_GND Ground / 0V V-
4 CAN_H CAN_H bus line (dominant high)
5 CAN_L CAN_L bus line (dominant low)
The plugs must be wired in accordance with IEC 60947-5-2.
CANopen Operating Mode
For information about the functions of the standard
CANopen interface, please see the “WZG Weigh Cells" CD-ROM
that is included with the weigh cell.
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Optional Data Interface: CANopen

Repairs
Repair work may be performed only by
authorized Sartorius service technicians.
Any attempt by untrained persons to
perform repairs may result in consider-
able hazards for the user.
Cleaning
When cleaning the weigh cell, please
observe the following and proceed with
care as required:
!Do not allow any substances or cleaning
products to enter the weigh cell
housing or come into contact with the
electronic components of the weigh
cell.
§Use only cleaning products that will not
damage the materials comprising the
weigh cell or its PCB or electronic com-
ponents.
§During cleaning, the electronics of the
weigh cell may not be connected to AC
power (power supply).
§Disconnect the weigh cell from AC
power and unplug the interface cable
from the weigh cell, if applicable.
Safety Inspection
If there is any indication that safe
operation of the weigh cell with the AC
adapter is no longer warranted:
§Turn off the power and disconnect the
equipment from AC power immediately.
> Lock the equipment in a secure place to
ensure that it cannot be used for the
time being.
Notify your nearest Sartorius Service
Center or the International Technical
Support Unit based in Goettingen,
Germany. Maintenance and repair work
may be performed only by authorized
Sartorius service technicians who have
access to the required maintenance
manuals and have received the
necessary training.
We recommend having the power sup-
ply inspected by a certified electrician at
regular intervals according to the check-
list below:
– Insulating resistance > 7 MOhm meas-
ured with a constant voltage of at least
500 V at a 500 kOhm load
– Leakage current < 0.05 mA measured
with a properly calibrated multimeter
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If you no longer need the packaging after
successful installation of the equipment,
you should return it for recycling. The
packaging is made from environmentally
friendly materials and is a valuable source
of secondary raw material.
The equipment, including accessories and
batteries, may not be disposed of as ordi-
nary household waste. European Union
regulations require electric and electronic
devices to be disposed of separately from
unsorted municipal waste so that they may
be subsequently recycled.
In Germany and some other countries,
Sartorius AG will take back electric and
electronic equipment and packaging for
disposal in accordance with the applicable
laws. These products may not be disposed
of as household waste or at collection
points designated by local public waste
disposal companies. This applies to small
businesses as well.
In Germany and in member nations of the
European Economic Area, please contact
your local Sartorius service provider or the
Sartorius Service Center in Goettingen,
Germany, if you need to recycle equipment
or packaging material:
Sartorius AG
Service Center
Weender Landstrasse 94-108
37075 Goettingen
Germany
If you set up the equipment in a country
that is not a member of the European Eco-
nomic Area or does not have a Sartorius
branch office, please contact your local
waste disposal authorities or disposal com-
pany for information on similar services.
Equipment that has been contaminated
with hazardous substances (ABC contami-
nation) will not be accepted for repair or
recycling. Please refer to our website
(www.sartorius.com) for service addresses
and extensive information on repairing or
recycling your equipment. This information
is also available from the Sartorius Service
Center on request.
Care and Maintenance Instructions for
Recycling

Specifications
Standard data User-specific
modifications
Weigh cell (model) WZG-1 WZG-2 WZG-10 WZG-20
Maximum load capacity 1 kg 2 kg 10 kg 20 kg
Dead load range, additive 0 – 6.2 kg 0 – 16 kg 0 – 25 kg 0 – 40 kg
Recommended max. platform size [mm] 500 +300 500 +300 600 +400 800 +500
Resolution d 0.01 g 0.01 g 0.1 g 0.1 g
Repeatability
(standard deviation) 1)<± 0.02 g <± 0.04 g <± 0.1 g <± 0.2 g
Linearity <± 0.05 g <± 0.1 g <± 0.2 g <± 0.4 g
Response time (typical) 1) 100 ms 100 ms 120 ms 150 ms
Operating temperature 0°C to +40°C
DC power supply 2) 12 – 26 VDC / ± 10%
Power consumption 8 W max.
Serial interface: RS-232 RS-232C-S/V24-V28; 7-bit; parity: even, mark, odd, space;
transmission rates: 150 to 19,200 baud,
1 or 2 stop bits, software/hardware handshake
Optional interface: CAN-Bus ISO 11898-compatible (electrically separated)
Max. insulating voltage 500 V
Max. baud rate 1 Mbps
Allowable cable length <20 m
Other specifications:
Options Motor decoupling device, transport locking device
Limitation of emissions In accordance with EN61326+A1 Class B (IEC61326+A1)
Defined immunity to interference In accordance with EN61326+A1, industrial areas (IEC61326+A1)
Protection rating against
foreign objects and water IP65 (IP44) in accordance with VDE 0470/ DIN EN 60529
Weight Approx. 12 kg
1) Depends on system design
2) The plug is for DC connections between devices that are not linked to a DC network.
The cable length may not exceed 3 meters.
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Overview