Tractel HF 32/2/A Mode d'emploi

MS 32/2/A R 03/03 1

HF 32/2/A Universal load cell

Including wiring for 2 trip points

equipment in

accordance with

CE directives

Operating

and

maintenance

manual

MS 32/2/A R 03/03 2

GENERAL WARNING 2

INSTALLATION OF HF 32 LOAD CELL 3 – 4 - 5

OPERATION AND ADJUSTMENT OF HF 32 LOAD CELL 6

WIRING OF HF 32 TWO TRIP POINTS 7

GENERAL WARNING

1- Reading and fully understanding the technical data sheets relating to this

equipment is essential for the best use of this high technological material

that you have received . All the technical data sheets are available on

request.

2- Before installing and operating Dynasafe equipment it is essential for the

safe and correct operation of the material that this manual be read and fully

understood and that all the instructions be followed. This manual should be

made available to every operator. Extra copies of this manual will be

supplied on request.

3- The installation and the operation Dynasafe equipment should only be

carried out in accordance with the appropriate health and safety at work

regulations.

4- Never apply to the Dynasafe a load or an effort in excess of the working

load limit, and never use it for an operation for which it is not intended.

5- TRACTEL S.A.S declines any responsibility for the consequences of

dismantling or altering the machine by any unauthorized person.

6- Dynasafe equipment must not be used in explosive atmospheres.

7- Dynasafe equipment must only be used in a system designed for lifting

people after ensuring that the appropriate operating coefficients have be

used in accordance with the current regulations.

8- Prior to the use of Dynasafe equipment with complementary equipment

relaying the signals to an operating system, the user or installer of this

system should carry out a specific risk analysis of the operating functions.

The appropriate measures should be taken to obviate risks identified.

MS 32/2/A R 03/03 3

INSTALLATION OF HF 32/2/A LOAD CELL

Components of the load cell

A- 2 m connecting cable

B- Flat washer.

C- Adjusting pin.

D- Locking ring.

E- Load cell body.

Procedure for installing load cell

Essential condition : the hook of the lifting system should be free of any load.

- Position the adjusting pin as a function of the load range and wire rope diameter (see p. 4).

- Remove the tightening bracket (K).

- Position the load cell on the wire rope near the dead end/fixed point. The connecting cable

should be uppermost.

- Replace the tightening bracket (K) ensuring that it is correctly positioned depending on the

diameter of the wire rope. (See page 4)

-Adjust the tightening screws (J) symetrically (+/- 0.5 kgm) to ensure that there is no risk of

moving the load cell out of line with the wire rope. Excessive tightening may break the

bracket.

- Operate the lifting system up to the upper limit switch and ensure that the sheaving or

bottom block does not foul the load cell. If this happens adjust the upper limit switch so that

there is an appropriate distance between the load cell and the bottom block. Also check that

when the bottom block is in the upper position the load cell is not in contact with the

overhead crane.

- Wire the connecting cable from the load cell t the control box. Ensure that the cable is

secured.

F- Locking nut

G- Tare screw.

H-Traction part.

I- Safety washer.

J- Tightening screw.

K-Tightening bracket.

L-Rubber compression pad.

M-Wire rope.

N- Fixing screws for circuit

breaker.(do not touch)

Fig. 1

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







MS 32/2/A R 03/03 4

INSTALLATION OF HF 32/2/A LOAD CELL

Positioning the adjusting pin as a function of the effort in the wire rope

Important remarks

- Before loading and if no preadjustment has been made in the factory, unscrew the

adjustment screw at the most, because you risk to destroy the transducer.

- To select pin and bracket position, load has priority over wire rope diameter.

- Never remove the locking nut (G) because tare screw (F) could damage the

microswitch.







For wire rope from 22 mm to 26 mm diameter

and for loads ranging from 500 kg to 6000 kg.

For wire rope from 17 mm diameter and for

loads ranging from 300 kg to 2300 kg.

For wire rope from 18 mm to 22 mm diameter

and for loads ranging from 350 kg to 5000 kg.

Fig. 2

MS 32/2/A R 03/03 5

INSTALLATION OF HF 32/2/A LOAD CELL

Correct positioning of the tightening bracket

depending on the diameter of the wire rope.

Fig. 3

Rubber compression pad

M6 screws * 40 mm (x2)

M6 screws * 50 mm (x2)

17 mm wire rope

without the rubber compression pad,

M6 screws * 40mm (supplied)

18 mm to 25 mm wire rope

without the rubber compression pad,

M6 screws * 50mm (supplied)

MS 32/2/A R 03/03 6

OPERATION AND ADJUSTMENT OF HF 32/2/A LOAD CELL

The switching power is 4A, 220 Vac (0.3A, 250 Vdc). ( It is therefore possible to

connect in series in the upper limit switch circuit).

Adjustment of the safety trip point

Essential conditions : - The load cell must be correctly installed and wired.

- The hook of the lifting system should be free of any load.

Equipment required : - A load (“Pm”) equivalent to 100 % of the working load limit

of the lifting system .

- An additional load equivalent to 10 % of « Pm ».

ACTION EXPLANATION

1Lift the two loads

(100% + 10% of Pm)

by +/- 10 cm.

The additional 10 % load represents the overload value

permitted under the European directives.

If an overload situation is detected in the wire rope ( without

lifting the loads) the preadjustment of the load cell in the

factory is too low for your lifting system.

Solution: release the tare screw (F - see fig. 4) one turn at a

time and restart at the beginning of point 1.

2To adjust the safety

trip point.

Use the tare screw (F).

Warning : incorrect adjustment may damage the circuit –

breaker.

Do not forget the locking nut (G). The switch is a normally

closed contact (NC), requiring the opening of the switch to set

off an overload condition.

Turn clockwise to reduce the value of the trip point.

Turn anticlockwise to increase the value of the trip point

(Black)

Alarm

Control

voltage

Lifting

Contactor

Brown)

(Blue)

BROWN/BLUE = NC (Normally closed)

BROWN/BLACK = NO (Normally open)







Earth

Fig. 4

MS 32/2/A R 03/03 7

INSTALLATION OF HF 32 / . / A . TWO TRIP POINTS



The individual adjustment of each trip point must be carried out as

explained in this manual for the one trip point models.

WIRING

Components of the load cell

A – Cable connection.

B – Flat washer.

C – Adjust pin.

D – Locking ring

E – Load cell body.

F – Tare screw for trip point N° 1.

G – Locking nut for trip N° 1.

F’ - Tare screw for trip point N° 2.

G’ - Locking nut for trip N° 2.

H –Traction part.

I – Safety washer.

J – Tightening screw.

K – Tightening bracket.

L – Rubber compression pad.

M – Wire rope.

N – Fixing screws for circuit-breaker.

S 1

S 2

Trip point 1( intermediary )

GREEN / BROWN : NC ( 4 A 220 Vac )

WHITE/ BROWN : NO ( 4 A 220 Vac)

Trip point 2 ( Safety )

BLUE / GREY : NC ( 4 A 220 Vac )

PINK / GREY : NO ( 4 A 220 Vac )

MS 32/2/A R 03/03 8

NOTES :

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