HBM RTN User manual
Mounting Instructions | Montageanleitung |
Notice de montage
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RTN
Hottinger Baldwin Messtechnik GmbH
Im Tiefen See 45
D-64293 Darmstadt
Tel. +49 6151 803-0
Fax +49 6151 803-9100
www.hbm.com
Mat.: 7-0101.0030
DVS: A01153_03_Y00_01 HBM: public
04.2020
EHottinger Baldwin Messtechnik GmbH.
Subject to modifications.
All product descriptions are for general information only.
They are not to be understood as a guarantee of quality or
durability.
Änderungen vorbehalten.
Alle Angaben beschreiben unsere Produkte in allgemeiner
Form. Sie stellen keine Beschaffenheits- oder Haltbarkeits
garantie dar.
Sous réserve de modifications.
Les caractéristiques indiquées ne décrivent nos produits
que sous une forme générale. Elles n'impliquent aucune
garantie de qualité ou de durablilité.
Mounting Instructions | Montageanleitung |
Notice de montage
English Deutsch Français
RTN
2A01153_03_Y00_01 HBM: public RTN
English
1 Safety instructions 3........................................
2 Markings used 7............................................
2.1 Markings used in this document 7..............................
2.2 Symbols on the device 7......................................
3 Application 8...............................................
4 Mounting instructions 9.....................................
5 Electrical connection 12......................................
5.1 Connection in a 4-wire configuration 12..........................
5.2 Plug connection (optional) 13...................................
5.3 Parallel connection of several transducers 14.....................
5.4 Shortening and extending the cable 14..........................
5.5 EMC protection 15............................................
6 Corrosion protection and maintenance 17.....................
7 Specifications 18............................................
8 Dimensions of the RTN... load cell 19.........................
9 Mounting accessories 21.....................................
Safety instructions
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1 Safety instructions
Intended use
Load cells of the RTN…type series are designed for technical weighing
applications within the load limits detailed in the specifications. Any other use is
not the intended use.
The load cells may only be installed by qualified personnel in compliance with
the specifications and with the safety requirements and regulations of these
mounting instructions. It is also essential to observe the applicable legal and
safety regulations for the application concerned. The same applies to the use
of accessories.
Load cells are not intended for use as safety components. Please also refer to
the “Additional safety precautions” section. Proper and safe operation of the
load cells requires proper transportation, correct storage, siting and mounting,
and careful operation.
Load-carrying capacity limits
Comply with the data in the technical data sheets when using the load cells.
The respective specified maximum loads in particular must never be exceeded.
Do not exceed the values stated in the technical data sheets, for example, for
Slimit load
Slateral load limiting
Sbreaking loads
Stemperature limits
Slimits of electrical load-carrying capacity
Note that when several load cells are installed in a scale, there is not always an
even load distribution on the individual load cells.
Use as machine elements
The load cells can be used as machine elements. When used in this manner, it
must be noted that, to favor greater sensitivity, the load cell is not designed
with the safety factors usual in mechanical engineering. Please refer to the
“Load-carrying capacity limits” section and the specifications.
Safety instructions
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Accident prevention
The applicable accident prevention regulations from employers’ liability
insurance associations must be taken into account, even though the stated
load in the destructive range is well in excess of the full scale value.
Additional safety precautions
Load cells cannot (as passive transducers) implement any (safety-relevant)
cutoffs. This requires additional components and constructive measures, for
which the installer and operator of the plant is responsible.
In cases where a breakage or malfunction of the load cells would cause injury
to persons or damage to equipment, the user must take appropriate additional
safety measures that meet at least the requirements of applicable safety and
accident prevention regulations (e.g. automatic emergency shutdown, overload
protection, catch straps or chains, or other fall protection).
The electronic processor that processes the measurement signal should be
designed so that failure of the measurement signal cannot lead to secondary
failures.
General dangers of failing to follow the safety instructions
Load cells are state-of-the-art and reliable. Transducers can give rise to
residual dangers if they are mounted, installed, used and operated
inappropriately or by untrained personnel. Everyone involved with siting,
starting up, operating or repairing a load cell must have read and understood
the mounting instructions and in particular the technical safety instructions.
Load cells may be damaged or destroyed by improper use or non-compliance
with the mounting and operating manual, these safety instructions or any other
applicable safety regulations (safety and accident prevention regulations of
employers’ liability insurance associations) when handling the load cells. Load
cells can break, particularly if overloaded. The breakage of a load cell can also
cause damage to property or injury to persons in the vicinity of the load cell.
If load cells are not used according to their designated use, or if the safety
instructions or specifications in the mounting and operating manual are
ignored, it is also possible that the load cells may fail or malfunction, with the
result that persons or property may be affected (due to the loads acting on or
being monitored by the load cells).
Safety instructions
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The scope of supply and performance of the transducer covers only a small
area of weighing technology, as measurements with (resistive) strain gage
sensors presuppose the use of electronic signal conditioning. In addition,
equipment planners, installers and operators should plan, implement and
respond to the safety engineering considerations of the weighing technology in
such a way as to minimize residual dangers. Pertinent national and local
regulations must be complied with.
Conversions and modifications
The design or safety engineering of the transducer must not be modified
without our express permission. Any modification shall exclude all liability on
our part for any damage resulting therefrom.
Resale
If the load cell is resold, these mounting instructions must be included with the
load cell.
Environmental protection, disposal
In accordance with national and local environmental protection, material
recovery and recycling regulations, old transducers that are no longer
serviceable must be disposed of separately from normal household waste.
If you require more information about disposal, please contact your local
authorities or the dealer from whom you purchased the product.
Safety instructions
6A01153_03_Y00_01 HBM: public RTN
Qualified personnel
Qualified personnel means persons entrusted with installing, mounting, starting
up and operating the product, who possess the appropriate qualifications for
their function.
This includes people who meet at least one of the three following criteria:
1. Knowledge of the safety concepts of automation technology is a require
ment and as project personnel, you must be familiar with these concepts.
2. As automation plant operating personnel, you have been instructed how to
handle the machinery. You are familiar with the operation of the equipment
and technologies described in this documentation.
3. As commissioning engineers or service engineers, you have successfully
completed the training to repair the automation systems. You are also
authorized to operate, ground and mark circuits and equipment in
accordance with safety engineering standards.
Markings used
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2 Markings used
2.1 Markings used in this document
Important instructions for your safety are highlighted. Following these
instructions is essential in order to prevent accidents and damage to property.
Symbol Meaning
Note This marking draws your attention to a situation in
which failure to comply with safety requirements
could lead to property damage.
Important
This marking draws your attention to important
information about the product or about handling the
product.
Information
This marking draws your attention to information
about the product or about handling the product.
Emphasis
See …
Italics are used to emphasize and highlight text and
identify references to sections of the manual,
diagrams, or external documents and files.
2.2 Symbols on the device
CE mark
With the CE mark, the manufacturer guarantees that the
product complies with the requirements of the relevant
EC directives (the Declaration of Conformity can be
found on the HBM website HBM (www.hbm.com) under
HBMdoc).
Statutory waste disposal marking
In accordance with national and local environmental
protection and material recovery and recycling
regulations, old devices that can no longer be used must
be disposed of separately and not with normal household
garbage. If you need more information about disposal,
please contact your local authorities or the dealer from
whom you purchased the product.
Application
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3 Application
RTN ring torsion load cells are available in different variants for a wide range of
maximum capacities (1 to 470 metric tons). They are suitable for weighing all
kinds of containers and for large platform scales. They have a stainless steel
body that lends them a high IP rating and makes them suitable for use in harsh
conditions. With their annular strain gage, RTN load cells considerably
minimize the influence of transverse and lateral loads. A legal-for-trade
weighing system up to 3,000 parts (as per OIML R60) is possible.
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