BRUEL & KJAER HBK Z6AM User manual

Z6AM
ENGLISH DEUTSCH FRANÇAIS
Mounting Instructions
Montageanleitung
Notice de montage

Hottinger Brüel & Kjaer GmbH
Im Tiefen See 45
D-64293 Darmstadt
Tel. [phone]
Fax [phone]
[email protected]
www.hbkworld.com
Mat.: 7-0101.0033
DVS: A01559 03 Y00 01
02.2022
EHottinger Brüel & Kjaer 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 allge
meiner Form. Sie stellen keine Beschaffenheits- oder
Haltbarkeitsgarantie 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
durabilité.

Z6AM
ENGLISH DEUTSCH FRANÇAIS
Mounting Instructions

Z6AM
TABLE OF CONTENTS
2
TABLE OF CONTENTS
1 Safety instructions 3................................................
2 Markings used 5....................................................
2.1 The markings used in this document 5.................................
2.2 Symbols on the product 5............................................
3 General 6..........................................................
4 Prior to mounting 7.................................................
5 Mounting 8........................................................
6 Operation 9........................................................
7 Mounting examples 10...............................................
8 Connection 11.......................................................
8.1 Connecting several weighing modules in parallel 11.......................
8.2 Connection using four‐wire circuitry 12..................................
8.3 Cable extensions 12..................................................
9 Dimensions 13......................................................
10 Specifications 14....................................................
10.1 Z6AM weighing module 14............................................
10.2 Z6 load cells 14......................................................

3
Z6AM
SAFETY INSTRUCTIONS
1 SAFETY INSTRUCTIONS
In cases where a breakage would cause injury to persons or damage to equipment, the
user must take appropriate safety measures (such as fall protection, overload protection,
etc.). For safe and trouble‐free operation, weighing modules must not only be correctly
transported, stored, sited and installed but must also be carefully operated and main
tained.
It is essential to comply with the relevant accident prevention regulations. In particular
you should take into account the limit loads quoted in the specifications.
Use in accordance with the regulations
Z6AM type weighing modules are conceived for weighing applications. Use for any
additional purpose shall be deemed to be not in accordance with the regulations.
In the interests of safety, the weighing modules should only be operated as described in
the Mounting Instructions. It is also essential to observe the appropriate legal and safety
regulations for the application concerned during use. The same applies to the use of
accessories.
The weighing modules are not safety elements within the meaning of its use as intended.
Proper and safe operation of this transducer requires proper transportation, correct
storage, assembly and mounting and careful operation and maintenance.
General dangers due to non‐observance of the safety instructions
The Z6AM weighing modules correspond to the state of the art and are fail‐safe. The
weighing modules can give rise to residual dangers if they are inappropriately installed
and operated by untrained personnel.
Everyone involved with the installation, commissioning, maintenance or repair of a force
transducer must have read and understood the Mounting Instructions and in particular
the technical safety instructions.
Residual dangers
The scope of supply and performance of the weighing modules covers only a small area
of weighing technology. In addition, equipment planners, installers and operators should
plan, implement and respond to the safety engineering considerations of weighing
technology in such a way as to minimise residual dangers. Prevailing regulations must be
complied with at all times. There must be reference to the residual dangers connected
with weighing technology.

Z6AM
SAFETY INSTRUCTIONS
4
Environmental conditions
In the context of your application, please note that all materials which release chlorine
ions will attack all grades of stainless steel and their welding seams. In such cases the
operator must take appropriate safety measures.
Prohibition of own conversions and modifications
The weighing modules must not be modified from the design or safety engineering point
of view except with our express agreement. Any modification shall exclude all liability on
our part for any damage resulting therefrom.
Qualified personnel
These weighing modules are only to be installed by qualified personnel strictly in
accordance with the technical data and with the safety rules and regulations which
follow. It is also essential to observe the appropriate legal and safety regulations for the
application concerned. The same applies to the use of accessories.
Qualified personnel means persons entrusted with the installation, fitting, commissioning
and operation of the product who possess the appropriate qualifications for their
function.
Accident prevention
Although the specified nominal capacity in the destructive range is several times the full
scale value, the relevant accident prevention regulations from the trade associations
must be taken into consideration.

5
Z6AM
MARKINGS USED
2 MARKINGS USED
2.1 The markings used in this document
Important instructions for your safety are specifically identified. It is essential to follow
these instructions in order to prevent accidents and damage to property.
Symbol Significance
CAUTION This marking warns of a potentially dangerous
situation in which failure to comply with safety
requirements can result in slight or moderate physical
injury.
Notice This marking draws your attention to a situation in
which failure to comply with safety requirements can
lead to damage to property.
Important This marking draws your attention to important in
formation about the product or about handling the
product.
Tip This marking indicates application tips or other
information that is useful to you.
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, diagrams, or external
documents and files.
2.2 Symbols on the product
CE mark
The CE mark enables the manufacturer to guarantee that the
product complies with the requirements of the relevant EC direc
tives (the declaration of conformity is available at
http://www.hbm.com/HBMdoc
).

Z6AM
GENERAL
6
3 GENERAL
HBK supplies Z6AM weighing modules for max. capacities from 50 kg to 200 kg and
500 kg. The weighing modules are designed mainly for use in weighing applications.
These weighing modules are fitted with lateral stay rods. An integral over‐load stop is
also fitted.
The modules consist of a base plate, the load cell complete with load application
elements, and the cover plate. A pendulum support is used for the load application,
providing compensation for horizontal load shifts (such as may occur as a result of
thermal strain, for example). The weighing modules are pre‐assembled and a grounding
cable is supplied.

7
Z6AM
PRIOR TO MOUNTING
4 PRIOR TO MOUNTING
SCare should be taken to ensure that all surfaces for siting and mounting are clean,
smooth and level. Depending on the mounting conditions, any leveling error can be
compensated for by using suitable wedges and compensation plates (permanently
welded) or by grinding away the mounting surface, for example. On no account must
the module plates be ground.
SThe base or foundation frame must be sufficiently rigid to prevent unacceptable de
formation under load (such as sagging).
SIn order to keep the mounting as free of constraining forces as possible, the fastening
holes on the foundation frame and container joint must be suitably aligned.
SEvery effort should be made to ensure uniform loading on the support points. Care
should be taken to adjust the height on the support points correctly (compensating
shims need to be available). This is especially important in the case of statically unde
fined supports.

Z6AM
MOUNTING
8
5 MOUNTING
SWhen mounting the container it is important to ensure that no sudden heavy loads are
applied to the module, for instance when lowering it onto the supports. Even transient
loads can damage the load cell if they exceed its limit values.
Notice
The factory‐fitted overload stop is designed for handling overloads during normal opera
tion. It is not designed to deal with short, sharp loads imposed during mounting, as these
commonly amount to a multiple of the permissible limit values.
SIn the case of statically undefined supports, non‐uniform loading of the modules oc
curs due to flexibility as the load is taken up or due to inaccuracy in the height adjust
ment. This non‐uniformity should be checked on the individual load cells by applying
an excitation voltage and comparing the output voltages. To prevent overloads, any
large non‐uniformity should be compensated for by inserting shims under the sup
ports that are least loaded.
SWhen tanks are heavy or mounting conditions are unfavorable, the use of mounting
aids such as auxiliary supports or lifting equipment is recommended.
S-The weighing modules must be installed so that they are not exposed to lateral
forces in the initial state. This means the built‐in pendulum support must be aligned as
near to the perpendicular as possible. This is the case when the foundation and tank
joint are horizontal and the fastening holes on the foundation and container joint are
suitably aligned.
SThe upper module plate and lower module plate should be firmly fastened to the
foundation and tank respectively (applies only to modules nondistorted installed on
the support).
SThe fitted EEK4 grounding cable is used to protect against welding currents that can
damage the electronic parts of the transducers.
Notice
The following tightening moments prescribed for the fastening bolts must be adhered to
when replacing the load cell:
up to 200 kg max. capacity Galvanized version: 34 N·m
Stainless steel version: 23 N·m
500 kg max. capacity Galvanized version: 76 N·m
Stainless steel version: 45 N·m
The setting of the overload stop must be checked after the replacement load cell has
been installed. Please refer to the specifications for the weighing module: ”Play on over
load stop”.