HBM U9B Bedienungsanleitung

A0137-7.0 en/de/fr

Force transducer

Kraftaufnehmer

Capteur de force

U9B

Mounting Instructions

Montageanleitung

Notice de montage

English Seite 3 - 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Deutsch Page 23 - 44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Français Page 44 - 66. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

U9B

A0137-7.0 en/de/fr HBM

Contents Page

English

Safety information 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1 Scope of supply 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 General application instructions 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 Structure and mode of operation 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1 Transducer 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2 SG cover 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 Conditions on site 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1 Ambient temperature 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.2 Moisture and corrosion protection 11. . . . . . . . . . . . . . . . . . . . . . . . . .

4.3 Deposits 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.4 External pressure 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 Mechanical installation 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.1 Important precautions during installation 13. . . . . . . . . . . . . . . . . . . .

5.2 General installation guidelines 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.3 Installation with tension/compression bars 14. . . . . . . . . . . . . . . . . . .

5.3.1 Installation and locking with initial stress

(recommended installation variant) 14. . . . . . . . . . . . . . . . . . .

5.3.2 Installation and locking with tightening torque 14. . . . . . . . . .

5.4 Installation with direct connection 14. . . . . . . . . . . . . . . . . . . . . . . . . .

5.5 Installation with knuckle eyes 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.5.1 Installation and locking with initial stress

(recommended installation variant) 15. . . . . . . . . . . . . . . . . . .

5.5.2 Installation and locking with tightening torque 15. . . . . . . . . .

6 Electrical connection 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.1 Connection with four‐wire configuration 17. . . . . . . . . . . . . . . . . . . . .

6.2 Shortening the cable 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.3 Cable extension 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.4 EMC protection 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7 Specifications 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8 Dimensions 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8.1 U9B with nominal force range 50N to 200N 21. . . . . . . . . . . . . . . . .

8.2 U9B with nominal force range 500N to 50kN 21. . . . . . . . . . . . . . . .

8.3 Mounting aids 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

U9B

A0137-7.0 en/de/frHBM

Safety information

Designated use

The force transducers type U9B are suitable for measuring static and dynamic

tensile and compressive forces. Any other use is not the designated use.

To ensure safe operation, the regulations in the assembly and operating in

structions, together with the following safety rules and regulations, and the

data specified in the technical data sheets, must be complied with. It is also

essential to observe the applicable legal and safety regulations for the ap

plication concerned.

The force transducers are not intended for use as safety components. Please

also refer to the section “Additional safety precautions”. Proper and safe op

eration of the force transducer requires proper transportation, correct storage,

siting and mounting, and careful operation.

Loading capacity limits

The data in the technical data sheet must be complied with when using the

force transducer. In particular, the respective maximum loads specified must

never be exceeded. The following limits set out in the technical data sheets

must not be exceeded

•Limit forces

•Lateral limit forces

•Breaking forces

•Permissible dynamic loads

•Temperature limits

•Limits of electrical loading capacity

Please note that when several force transducers are interconnected, the load/

force distribution is not always uniform.

Use as a machine element

The force transducers can be used as machine elements. When used in this

manner, it must be noted that, to favor greater sensitivity, the force transducer

cannot be designed with the safety factors usual in mechanical engineering.

Please refer here to the section “Loading capacity limits” and the technical

data.

Accident prevention

The prevailing accident prevention regulations must be taken into account,

even though the nominal (rated) force values in the destructive range are well

in excess of the full scale value.

U9B

A0137-7.0 en/de/fr HBM

Additional safety precautions

The force transducers cannot (as passive transducers) implement any (safety‐

relevant) cutoffs. This requires additional components and constructive mea

sures for which the installer and operator of the plant is responsible.

In cases where a breakage or malfunction of the force transducer would

cause injury to persons or damage to equipment, the user must take appropri

ate additional safety measures that meet at least the requirements of applica

ble safety and accident prevention regulations (e.g. automatic emergency

shutdown, overload protection, catch straps or chains, or other fall protection).

The layout of the electronics conditioning the measurement signal should be

such that measurement signal failure does not cause damage.

General dangers of failing to follow the safety instructions

The force transducers are state‐of‐the‐art and reliable. Transducers can give

rise to remaining dangers if they are incorrectly operated or inappropriately

mounted, installed and operated by untrained personnel. Every person in

volved with siting, starting‐up, operating or repairing a force transducer must

have read and understood the mounting instructions and in particular the

technical safety instructions. The force transducers can be damaged or de

stroyed by non‐designated use of the force transducer or by non‐compliance

with the mounting and operating instructions, these safety instructions or any

other applicable safety regulations (BG safety and accident prevention regula

tions) when using the force transducers. Force transducers can break, partic

ularly in the case of overloading. The breakage of a force transducer can also

cause damage to property or injury to persons in the vicinity of the force trans

ducer.

If force transducers are not used according to their designated use, or if the

safety instructions or specifications in the mounting‐ and operating instruc

tions are ignored, it is also possible that the force transducer may fail or mal

function, with the result that persons or property may be affected (due to the

loads acting on or being monitored by the force transducer).

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

area of force measurement technology, as measurements with (resistive)

strain gage sensors presuppose the use of electronic signal processing. In

addition, equipment planners, installers and operators should plan, implement

and respond to the safety engineering considerations of force measurement

technology in such a way as to minimize residual dangers. Prevailing regula

tions must be complied with at all times.

U9B

A0137-7.0 en/de/frHBM

Markings used in this document

The marking below warns of a potentially dangerous situation in which failure

to comply with safety requirements can result in death or serious physical in

jury.

WARNING

Description of a potentially dangerous situation

Measures to avoid/prevent the danger

The marking below warns of a potentially dangerous situation in which failure

to comply with safety requirements can result in slight or moderate physical

injury.

CAUTION

Description of a potentially dangerous situation

Measures to avoid/prevent the danger

The marking below warns of a situation in which failure to comply with safety

requirements could lead to damage to property.

NOTE

Description of a situation that could lead to damage to property

The marking below draws your attention to important information about the

product or about handling the product.

Important

Important information

The marking below contains application tips or other information that is useful

to you.

U9B

A0137-7.0 en/de/fr HBM

Tip

Information/Application instructions

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 ex

clude all liability on our part for any damage resulting therefrom.

Maintenance

The U9B force transducer is maintenance free.

Disposal

In accordance with national and local environmental protection and material

recovery and recycling regulations, old transducers that can no longer be

used must be disposed of separately and not with normal household garbage.

If you need more information about waste 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 require

ments:

- Knowledge of the safety concepts of automation technology is a require

ment and as project personnel, you must be familiar with these concepts.

- 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.

- As commissioning engineers or service engineers, you have successfully

completed the training to qualify you to repair the automation systems. You

are also authorized to activate, ground and label circuits and equipment in

accordance with safety engineering standards.

It is also essential to comply with the legal and safety requirements for the ap

plication concerned during use. The same applies to the use of accessories.

The force transducer must only be installed by qualified personnel, strictly in

accordance with the specifications and with the safety requirements and regu

lations listed below.

U9B

A0137-7.0 en/de/frHBM

1 Scope of supply

•1 Force transducer U9B

•1 Mounting instructions

•1 Manufacturing certificate

2 General application instructions

The U9B type series force transducers are suitable for measuring tensile and

compressive forces. Because they provide highly accurate static and dynamic

force measurements, they must be handled very carefully. Particular care

must be taken when transporting and installing the devices. Dropping or

knocking the transducers may cause permanent damage.

The relatively thin housing covers must not be damaged, particularly at nomi

nal (rated) forces up to 200 N, otherwise the transducer will become useless,

see section 3.2 on Page 9.

The specifications list the permissible limits for mechanical, thermal and elec

trical stress. It is essential that these are taken into account when planning the

measuring set‐up, during installation and ultimately, during operation.

U9B

A0137-7.0 en/de/fr HBM

3 Construction and mode of operation

3.1 Transducer

The measuring body is a membrane that is mounted on four strain gages

(SG) so that two are stretched and two compressed. The membrane with the

SG is elastically deformed by the force acting in the measuring direction. The

strain gauge changes its ohmic resistance in proportion to its change in length

and so unbalances the Wheatstone bridge. If there is a bridge excitation volt

age, the circuit produces an output signal proportional to the change in resist

ance and thus also proportional to the applied force.

The force is applied to the measuring body of the U9B via two threaded bolts.

For smaller measuring ranges up to 200 N, one side is designed as an

adapter which is connected via three screws (M3) to the transducer (see

Fig 3.1). By undoing these screws, you can remove the adapter and mount

the transducer directly. The zero signal may change by max. 2% due to this. If

the adapter is mounted again, the screws must be tightened with a tightening

torque of 0.75N⋅m.

Fig 3.1: Adapter connection with three screws

3.2 SG cover

To protect the SG, the U9B force transducers are welded with a thin metal

plate. This procedure offers the SG a high protection against environmental

influences.

U9B

A0137-7.0 en/de/frHBM

Do not load here

Fig 3.2: Housing cover

NOTE

The relatively thin housing cover (specially within the measuring range up to

200 N) of the transducer must not be stressed. The specifications list the per

missible limits for mechanical, thermal and electrical stress. They must be

complied with, otherwise the transducer can be destroyed.

Andere Handbücher für U9B

Inhaltsverzeichnis

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