Mettler Toledo ICS426 User Manual
Explosion proof weighing solution
User Manual
ICS426x
Congratulations on choosing the quality and precision of METTLER TOLEDO. Proper use of your new
equipment according to this Manual and regular calibration and maintenance by our factory-trained service
team ensures dependable and accurate operation, protecting your investment. Contact us about a service
agreement tailored to your needs and budget. Further information is available at
www.mt.com/service
There are several important ways to ensure you maximize the performance of your investment:
1 Register your product: We invite you to register your product at
www.mt.com/productregistration
so we can contact you about enhancements, updates and important notifications concerning your
product.
2 Contact METTLER TOLEDO for service: The value of a measurement is proportional to its accuracy – an
out of specification scale can diminish quality, reduce profits and increase liability. Timely service from
METTLER TOLEDO will ensure accuracy and optimize uptime and equipment life.
ð Installation, Configuration, Integration and Training: Our service representatives are factory-trained
weighing equipment experts. We make certain that your weighing equipment is ready for production
in a cost effective and timely fashion and that personnel are trained for success.
ð Initial Calibration Documentation: The installation environment and application requirements are
unique for every industrial scale so performance must be tested and certified. Our calibration
services and certificates document accuracy to ensure production quality and provide a quality
system record of performance.
ð Periodic Calibration Maintenance: A Calibration Service Agreement provides on-going confidence
in your weighing process and documentation of compliance with requirements. We offer a variety of
service plans that are scheduled to meet your needs and designed to fit your budget.
ICS426x
ICS426x
Table of Contents
1 Introduction 3
1.1 Safety instructions........................................................................................................ 3
1.2 Presentation................................................................................................................ 4
1.3 Commissioning ........................................................................................................... 9
2 Operation 10
2.1 Switching on/off........................................................................................................... 10
2.2 Straight weighing......................................................................................................... 10
2.3 Switching units............................................................................................................ 10
2.4 Zeroing / Zero point correction ....................................................................................... 11
2.5 Weighing with tare....................................................................................................... 11
2.6 Displaying information ................................................................................................. 13
2.7 Printing results ............................................................................................................ 13
2.8 Average (dynamic) weighing ........................................................................................ 14
2.9 Working with identifications .......................................................................................... 14
2.10 Cleaning ..................................................................................................................... 15
2.11 Verification test ............................................................................................................ 15
3 Settings in the menu 16
3.1 Menu overview ............................................................................................................ 16
3.2 Operating the menu...................................................................................................... 16
3.3 Scale menu block ........................................................................................................ 19
3.4 Application menu block ................................................................................................ 24
3.5 Terminal menu block.................................................................................................... 25
3.6 Communication menu block ......................................................................................... 29
3.7 Maintenance menu block.............................................................................................. 32
4 Event and error messages 34
4.1 Error conditions ........................................................................................................... 34
4.2 Errors and warnings..................................................................................................... 35
4.3 Smart weighing counter / spanner icon........................................................................... 36
4.4 Service information ...................................................................................................... 36
5 Technical data 37
6 Appendix 38
6.1 Disposal..................................................................................................................... 38
6.2 Protocol printouts......................................................................................................... 38
Index 39
Table of Contents 1ICS426x
Table of Contents2 ICS426x
1 Introduction
1.1 Safety instructions
General
The ICS426x weighing terminal is approved for operation in Category 2 / DIV 1 hazardous areas.
If the ICS426x weighing terminal is used in hazardous areas, special care must be taken. The code of
practice is oriented to the "Safe Distribution" concept drawn up by METTLER TOLEDO.
Competence
• The weighing system may only be installed, maintained and repaired by authorized METTLER TOLEDO
service personnel.
• The mains supply may only be installed by a specialist authorized by the owner-operator.
Ex approval
• No modifications may be made to the terminal and no repair work may be performed on the modules.
Any weighing platform or system modules that are used must comply with the specifications contained
in this manual. Non-compliant equipment jeopardizes the intrinsic safety of the system, cancels the "Ex"
approval and renders any warranty or product liability claims null and void.
• The safety of the weighing system is only guaranteed when the weighing system is operated, installed
and maintained in accordance with the respective instructions.
• Also comply with the following:
– the instructions for the system modules,
– the regulations and standards in the respective country,
– the statutory requirement for electrical equipment installed in hazardous areas in the respective
country,
– all instructions related to safety issued by the owner.
• The explosion-protected weighing system must be checked to ensure compliance with the requirements
for safety before being put into service for the first time, following any service work and every 3 years, at
least.
Operation
• Prevent the build-up of static electricity.
– Always wear suitable working clothes when operating or performing service work in a hazardous
area.
– Only use the weighing terminal when electrostatic processes leading to propagating brush
discharges are impossible.
• Prevent the build-up of dust layers.
• Do not use protective coverings for the devices.
• Avoid damage to the system components.
Introduction 3ICS426x
1.2 Presentation
1 2
3
4
5
6
7
8
1.2.1 Overview
ICS426x features
• Approved for Category 2 / DIV 1 hazardous areas
• Compact scale
Default equipment
The weighing terminal offers the following interfaces:
• 1 serial interface IS-RS232
• 1 scale interface (SICSpro)
Optional equipment
The weighing terminal can be equipped or retrofitted with an additional interface CL20mA to be connected to
the ACM200 interface converter in the safe area.
1.2.2 Display
To meet your special requirements, different display layouts are available in the menu under Terminal
–> Device –> Display –> Display layout.
Straight weighing display – Default layout
Metrological data For details see following table
1
Weight value with star, sign and stability monitor For details see following table
2
Spanner icon: service needed For details see Event and error messages
3
Net/Gross
4
Unit
5
Bargraph
6
Auxiliary data line The content is defined in the menu
7
Symbol and info line For details see following table
8
Straight weighing display – 3-line mode
Introduction4 ICS426x
Straight weighing display – Big font mode
–10 °C ... +40 °C
Straight weighing display – Bargraph
The device offers a bargraph indicating the scale capacity.
The bargraph indicates roughly which part of the scale capacity is already occupied and what capacity is
still available.
In the example above, approximately 3/4 of the scale capacity is occupied, although the applied net weight
isn’t really high. The reason therefore could be a high tare weight.
Metrological data line
The metrological data is stored in the weighing platform. The weighing terminal only serves as
indicator.
In the metrological data line, the following information is displayed:
Symbol Information
, , ,
, ,
,
Accuracy classes
Weighing range information
Maximum capacity
Minimum capacity
Approved resolution
Display resolution
Approved weighing device
Temperature range
Introduction 5ICS426x
Weight value
I<–>I1
The weight value can be marked with the following symbols:
Symbol Information Remark
Calculated weight value For example for average weighing results
Sign For negative weight values
Stability monitor For unstable weight values
Non-approved last digit with
e>d
1.2.3 Symbols and info line
In the symbols and info line the following information can be displayed. For more symbols, refer to the User
manual.
Symbol Information Availability
Weighing range For multi range or multi interval scales
Weight below minimum weight
Automatic taring
Automatic clearing of the tare weight
Center of zero indication Depending on local Weights and
Fact needs to be done Displayed only if the function is
For approved scales only
The example shows the weight value for a scale
with e=1g and d=0.1g.
The last, smaller digit is not approved.
only
Measures regulations
supported by the weighing platform, e.g.,
PBK9-series
Introduction6 ICS426x
1.2.4 Keyboard
Key Name Function in the operating mode Function in the menu
Power • Switching on and off
• Cancelling editing
Clear • Clearing tare
• Leaving info page
• Cancelling editing
• Exiting menu
• Clearing value
• Clearing digit
Switch • Switching over weight unit • Re-editing
Zero • Setting scale to zero
• Clearing tare
Tare • Taring scale
• Clearing previous tare
Info • Activating info screen
• Proceeding to the next info line /
info page
• Freezing and releasing startup
screen
Transfer • Transferring data to a printer or
computer
–
–
–
• Confirming entry/selection
Introduction 7ICS426x
1.2.5 Connections
4 5 61 2 3
Power supply unit APS768x
1
Communication interface
3
Weighing platform (analog or digital)
5
• On connections (1) to (4) blind plugs are mounted at the factory.
• When connecting METTLER TOLEDO devices, M16x1.5 cable glands are provided with the
Intrinsically safe RS232 interface
2
Blind plug
4
Equipotential bonding terminal (EB)
6
devices.
• The cable gland on connection (5) is provided for connecting an analog weighing platform.
Introduction8 ICS426x
1.3 Commissioning
1.3.1 Selecting the location
The correct location is crucial for the accuracy of the weighing results.
1 Select a stable, vibration-free and, if possible, a horizontal location for
the weighing platform.
ð The ground must be able to safely bear the weight of the fully
loaded weighing platform.
2 Observe the following environmental conditions:
ð No direct sunlight
ð No strong drafts
ð No excessive temperature fluctuations
1.3.2 Leveling of weighing platforms
Only weighing platforms that have been levelled precisely horizontally,
provide accurate weighing results. Weights and Measures approved
weighing platforms have a level bubble to simplify levelling.
− Turn the adjustable feet of the weighing platform until the level bubble’s
air bubble is inside the inner circle.
For more details refer to the weighing platform documentation.
Introduction 9ICS426x
2 Operation
2.1 Switching on/off
Switching on
− Press .
ð For a few seconds the device shows a start-up screen with device name, software version, serial
number of the weighing terminal and the Geo Code value.
• You can freeze the start-up screen by pressing .
• When you start a compact scale, the metrology line shows whether it is approved or not. If you
have ordered an approved weighing system, approval has been done in the factory already (not
for the US market).
• To ensure accurate weighing results, wait 15 minutes after switching on before starting
weighing operation.
Switching off
− Press
ð Before the display goes out, -OFF- appears briefly.
Resetting
− Press and hold
ð The device is switched off.
.
for approx. 5 seconds.
2.2 Straight weighing
1 Place weighing sample on the scale.
2 Wait until the stability monitor
3 Read the weighing result.
disappears.
2.3 Switching units
If an additional second weight unit is configured in the menu, it is possible to switch back and forth
between the two weight units.
− Press
ð The weight value is displayed in the second unit.
.
• Possible units are g, kg, oz, lb, lb-oz, t.
• When in the menu Scale –> Disp. unit & res. –> Unit roll is set to On, the
weight value can be displayed in all available weight units by repeatedly pressing
.
Operation10 ICS426x
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