HBK PW27AP Manual de usuario

PW27AP

ENGLISH DEUTSCH FRANÇAIS

Mounting Instructions

Montageanleitung

Notice de montage

Hottinger Brüel & Kjaer GmbH

Im Tiefen See 45

D-64293 Darmstadt

Tel. +49 6151 803-0

Fax +49 6151 803-9100

[email protected]

www.hbkworld.com

Mat.: 7-0201.0003-1

DVS: A05202 02 Y00 02

06.2023

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.

PW27AP

ENGLISH DEUTSCH FRANÇAIS

Mounting Instructions

PW27AP

TABLE OF CONTENTS

1 Safety instructions 3................................................

2 Markings used 6....................................................

2.1 The markings used in this document 6.................................

2.2 Symbols on the product 6............................................

3 Conditions on site 7.................................................

3.1 Protection against corrosion 7........................................

3.2 Cleaning 7.........................................................

3.3 Deposits 7.........................................................

4 Mechanical installation 8............................................

4.1 Important precautions during installation 8..............................

4.2 Mounting 8........................................................

5 Electrical connection 10..............................................

5.1 Connection in a six‐wire configuration 10................................

5.2 Connection in a four‐wire configuration 10...............................

5.3 Shortening the cable 11...............................................

5.4 Extension cable 11...................................................

5.5 Parallel connection 11................................................

5.6 EMC protection 11...................................................

6 Dimensions 13......................................................

7 Accessories 14......................................................

8 Specifications 16....................................................

PW27AP

SAFETY INSTRUCTIONS

1 SAFETY INSTRUCTIONS

Appropriate use

Load cells of the PW27AP…type series are designed for technical weighing applications

within the load limits stipulated in the specifications. Any other use is not appropriate.

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 follow the

instructions in 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

The data in the technical data sheets must be complied with when using the load cells. In

particular, the respective maximum loads specified must never be exceeded. The values

stated in the technical data sheetsmust not be exceeded, for example, for

SLimit load

SLimit load at max. eccentricity

SLimit lateral loading

SBreaking loads

STemperature limits

SLimits of electrical loading capacity

Note, that when several load cells are installed in a scale, there is not always an even

distribution of load on the individual load cells.

Use as a machine element

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 here to the section “Load carrying capacity

limits" and to the specifications.

Accident prevention

The prevailing accident prevention regulations must be taken into account, even though

the maximum capacity values in the destructive range are well in excess of the full scale

value.

PW27AP

SAFETY INSTRUCTIONS

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 electronics conditioning the measurement signal should be designed so that

measurement signal failure does not cause damage.

General dangers of failing to follow the safety instructions

Load cells are state‐of‐the‐art and reliable. There may be risks involved if the transducers

are mounted, sited, installed 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. The load cells can be damaged or destroyed by non‐designated use of the

load cells or by non‐compliance with the mounting and operating instructions, these

safety instructions or any other applicable safety regulations (BG safety and accident

prevention regulations) when using the load cells. Load cells can break, particularly in the

case of overloading. 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 instructions 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).

The scope of supply and performance of the transducer covers only a small area of

weighing technology, as measurements with (resistive) strain gauge 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 transducer 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.

Maintenance

PW27AP…load cells are maintenance free.

PW27AP

SAFETY INSTRUCTIONS

Selling on

If the load cell is sold on, 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 can no longer be used must be disposed of

separately and not with normal household waste.

If you need more information about disposal, please contact your local authorities or the

dealer from whom you purchased the product.

Qualified personnel

Qualified personnel means persons entrusted with siting, 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 requirements:

1. Knowledge of the safety concepts of automation technology is a requirement 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 system startup engineers or service engineers, you have successfully completed

the training to qualify you to repair the automation systems. You are also authorized

to ground and label circuits and equipment and place them in operation in accordance

with safety engineering standards.

PW27AP

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

WARNING This marking warns of a potentially dangerous situ

ation in which failure to comply with safety require

ments can result in death or serious physical injury.

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

PW27AP

CONDITIONS ON SITE

3 CONDITIONS ON SITE

Series PW27AP load cells are hermetically encapsulated and are therefore not at all

sensitive to the influence of moisture and humidity. The transducers attain protection

class IP68 (test conditions: 100 hours under 1 m water column) and IP69K (water at high

pressure, steam cleaner), as per DIN EN60529. Nevertheless, the load cells must be

protected against constant humidity and moisture.

3.1 Protection against corrosion

The load cell must be protected against chemicals that could attack the transducer body

steel, or the cable.

Notice

Acids and all substances that release ions also attack stainless steels and their welded

seams.

Should there be any corrosion, this could cause the transducer to fail. If this is the case,

you must provide appropriate means of protection.

3.2 Cleaning

The load cell has been designed according to the EHEDG design guidelines to allow for

easy, mild cleaning. When mounting the load cell, make certain it can be reached from all

sides for cleaning. Cleaning can be performed without dismounting the load cell and

should be done regularly. The surface of the load cell must not be damaged with sharp-

edged brushes during cleaning.

3.3 Deposits

Dust, dirt and other foreign matter must not be allowed to accumulate sufficiently to

divert some of the measuring force onto the housing, thus invalidating the measured

value (force shunt).

PW27AP

MECHANICAL INSTALLATION

4 MECHANICAL INSTALLATION

4.1 Important precautions during installation

SHandle the transducer with care.

SWelding currents must not be allowed to flow over the transducer. If there is a risk

that this might happen, you must provide a suitable low‐ohm connection to electrically

bypass the transducer. HBM provides the highly flexible EEK ground cable for this

purpose, for example, that is screwed on above and below the transducer.

SMake sure that the transducer cannot be overloaded.

WARNING

There is a danger of the transducer breaking if it is overloaded. This can cause danger for

the operating personnel of the system in which the transducer is installed.

Implement appropriate safety measures to avoid overloads or to protect against the

resulting dangers.

Notice

Load cells are precision measuring elements and need to be handled carefully. Dropping or

knocking the transducer may cause permanent damage. Make sure that the transducer

cannot be overloaded, including while it is being mounted.

4.2 Mounting

Attach the load cells at the mounting holes and apply load to the other end. The scope of

supply includes two seals for sealing the gap surfaces on the face against microbiologi

cal contamination. The screws and tightening torques to be used are given in the

following table:

Version Thread Max. thread reach Min. property class Tightening torque1)

Standard M6 14 mm 8.8 10 N⋅m

Rustless M6 14 mm A2-70 or A4-70 10 N⋅m

1) Recommendedvalue for the specified property class. Please comply with the screw manufacturer's

instructions with regard to screw dimensions.

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