Mecmesin MultiTest 1 Manual de usuario

It is essential that you

familiarise yourself with the

contents of these instructions

before attempting to

operate the MultiTest 1.

MultiTest 1

Motorised Test Frame

Operating Instructions

page 1

Contents

Operating Instructions 2

Force Gauges, Loadcells & Fixturing 4

Communication with External Devices 4

MultiTest 1 Technical Specifications 5

Appendices 6

Packing Instructions 8

Introduction

Thank you for choosing this Mecmesin test frame, with correct use it will give many years of

reliable service. Upon receiving the unit please check that no obvious physical damage has been

sustained by the packaging material or the test frame itself. If any damage is evident, or if any of

the items in Appendix 2 are missing, please notify Mecmesin or their Authorised Agent

immediately.

We strongly recommend that all the packaging and fixings are retained for any future transit

requirements. When using the MultiTest 1 please ensure that the ventilation holes situated on the

back and bottom of the unit are not obstructed. Also attach the four rubber feet to the MultiTest 1

with the screws provided (Do not over-tighten screws)

Before Use

Appendix 1 gives guidance notes on the safe use of mains powered test frames, which should

be read before proceeding any further. Within the European Union (EU), a copy of this Appendix

is supplied in a language appropriate to your country. Failure to adhere to the guidelines for safe

use given in these operating instructions may result in irreparable damage to the unit and personal

injury to the operator.

page 2

INTRODUCTION TO

THE MULTITEST 1

OPERATING

INSTRUCTIONS

Speed setting

Start-up Procedure

Emergency Stop

The MultiTest 1 is a single column ballscrew-driven test frame

with a load rating of up to 1000 newtons (N). It must not be

used with load ratings above 1000N. Complemented by a

Mecmesin loadcell or force gauge (as illustrated in the

photograph on the front cover), together with special fixtures

and accessories, it constitutes a key component in force

measurement systems suitable for accurately reproducing the

testing of a wide range of products.

There is only one standard model of the MultiTest 1. The

dimensions, speed range and capacity have been carefully

optimised to cover the test procedures and specimen sizes most

often needed by quality departments within many sectors of

manufacturing industry.

The MultiTest 1 has been designed and manufactured in a

controlled system to ensure compliance with all relevant

European Community Directives.

The MultiTest 1 has a single variable speed control for both

upward and downward directions. Speed can be set and

controlled by the knob (A, in fig.1) on the front panel. The white

pointer on the speed control knob gives an indication of the

speed setting. Some test Standards place particular

requirements upon speed accuracy/reproducibility, which may

exceed the normal performance of the MultiTest 1. Under such

circumstances calibration of each individual test stand may be

appropriate.

Set the limit switches (B, in fig 1); turn each thumbscrew

anticlockwise, move to approximately 50mm either side of the

moving crosshead (C, in fig.1) and re-tighten.

Check voltage selected is correct.

Connect your MultiTest 1 to an appropriate mains supply, turn

on the power switch (a, in fig 2.) The green power bar should

illuminate.

Pressing the red ‘Emergency Stop’ button will, at any time, stop

the crosshead moving.

To disengage the stop button turn either clockwise or

anticlockwise and then release.

It is advisable to check and become familiar with the operation

of the Emergency Stop once the system is connected to the

appropriate mains supply.

Set the ‘Mode’ rocker switch (F,in fig.1) to ‘Manual Control’

(upper position) and set the speed control knob to a mid-range

position (with pointer close to 12 o’clock). Hold the

‘Start/Stop’ centre-biased toggle switch (G, in fig.1) in either

the ‘Up’ or ‘Down’ position. A red LED (H, in fig 1) will

illuminate showing that the crosshead is moving, and

indicating the direction of travel. Releasing the Start/Stop

switch will stop the crosshead moving.

Set the Mode switch (F, in fig. 1) to ‘Single Cycle’ (lower

position), move the ‘Start/Stop’ switch (G, in fig. 1) to the ‘Up’

or ‘Down’ position and then release. The crosshead will move

and the LED indicating direction of travel will illuminate. When

a limit switch position is reached, the crosshead will begin to

travel in the opposite direction at full speed. When the position

of the other limit switch is reached, the motor will stop and the

crosshead will come to rest. During the cycle, setting the Mode

switch to ‘Manual Control’, or selecting either the ‘Up’ or’

Down’ position will stop the crosshead moving.

Manual operation

Single Cycle Operations

Note: Do not push or pull the

limit switches with your hand to

stop the stand - use the start/stop

switch

page 3

B - Upper limit

switch at rear

C - Crosshead

B - Lower limit

switch at rear

Fig.1

E F A H G

Front control

panel of

MultiTest 1

C - Crosshead

page 4

FORCE GAUGES,

LOADCELLS &

FIXTURING

Note: Loadcells and force gauges

are delicate pieces of equipment

and can easily be damaged

irreparably.

COMMUNICATION

WITH EXTERNAL

DEVICES

Note: The external cable must not

exceed 3 metres in length.

You will need to attach a force measuring device to your

MultiTest 1; this will usually be an Advanced Force Gauge

(AFG), Basic Force Gauge BFG) or an S-beam loadcell. Attach

an AFG or BFG by screwing a dovetail bracket to the back of

the gauge, slide it (with the loadcell stud pointing downwards)

onto the moving crosshead dovetail (C, in fig. 1), and then

tighten with the Allen key provided. Attach an S-beam loadcell

by screwing it into a tensionblock module, then proceed as for

attaching a gauge. If you have purchased special fixturing,

attach this to the gauge/loadcell and/or your MultiTest 1.

One way of causing irreparable damage would be to drive the

test frame downwards until the loadcell (or loadcell stud on

AFG & BFG instruments) hits something ‘solid’. This is a risk

when a user is not yet familiar with operating a new test frame.

Consequently it is essential to set the limit switches (B, in fig. 1),

so that upwards/downward travel of the crosshead is limited

to prevent over travel and drive the gauge into the grips, stand

or apply excessive load to the sample. Adjust the limit switches

(B, in fig. 1) according to your sample dimensions and testing

requirements.

There is an external control port at the rear of the MultiTest 1.

The Display Unit Interface (b,in fig.2) enables the MultiTest 1 to

respond, via the appropriate Mecmesin cable, to signals from

an AFG. For further information please refer to the AFG

Operating Instructions.

Fig.2

a. Power

On/Off switch

b. Display unit

interface

The MultiTest 1 must be

powered off when

attaching or disconnecting

the cable. When the

display unit interface is

not in use please ensure

that it is covered with the

supplied shield at all

times.

page 5

MULTITEST 1 SPECIFICATIONS

Load capacity 1000N/100kgf/220lbf

Power consumption 60 watts (maximum)

Weight (stand only) 20kg (44lb)

CROSSHEAD MOTION

Travel range 500mm (19.68in)

Maximum daylight 630mm (24.80in)

Maximum headroom 510mm (20.08in)

Speed range 2.5 - 1000mm/min

Up and down settings by toggle switch

Stand speed indicated by potentiometer/graduated dial

Direction of travel indicated LED

Limit switch repeatability < 0.5mm (0.020in)

Over-run at top speed < 2mm (0.08in)

Operating modes Manual & single cycle with fast return

Reverse on alarm point Yes, with AFG or AFTI cable

Reverse on sample break Yes, with AFG or AFTI cable

ENVIRONMENTAL OPERATING CONDITIONS

Temperature range 5ºC to 40ºC

Humidity < 92.5%

STANDARD LOAD MEASUREMENT OPTIONS

Force Gauge and dovetail bracket Yes

Anvil plate Yes

S-beam Loadcell, tension

block module & AFTI Yes

SPECIAL OPTIONS

Increased crosshead travel No

Increased crosshead depth Yes, reduced load capacity

Machine guard Yes

Horizontal operation Yes

Simple logging/plotting PC software DataPlot (see document M/501201)

Full computer control MultiTest 1-

Internal storage of test programs MultiTest 1-

page 6

APPENDIX 1 A GUIDE TO THE SAFE USE OF MAINS POWERED TEST FRAMES

MECMESIN TEST FRAMES HAVE BEEN DESIGNED AND MANUFACTURED IN A CONTROLLED SYSTEM

TO ENSURE COMPLIANCE WITH ALL RELEVANT EUROPEAN COMMUNITY DIRECTIVES.

To downlaod a copy of the EC declaration of conformity, please go to www.mecmesin.com in the Literature

& FAQ section, then double-click on Certificates of Conformity.

Receiving and Unpacking

1 Upon receiving the Mecmesin test frame ensure adequate equipment is available to safely lift the test

frame from the packaging. Trying to lift heavy items without adequate assistance or the correct

equipment may lead to accidental personal injury.

2 Once safely removed from the packaging place the test frame on a stable and level work surface. Inspect

the machine for any signs of obvious transit damage.

IF ANY DAMAGE IS DISCOVERED DO NOT GO ANY FURTHER WITH INSTALLATION AND DO NOT

CONNECT TO MAINS SUPPLY UNDER ANY CIRCUMSTANCES.

Contact your local supplier immediately who will decide the most appropriate action to rectify the situation as

quickly as possible.

Installing the Machine

3 After placing the machine on a stable and level work surface, check that the mains inlet voltage

corresponds to your electrical installation - either 230 Vac or 110 Vac. The machine has a label close

to the mains inlet connector which advises which voltage is set for.

If the machine does not correspond to your supply, inform your local Mecmesin supplier who will rectify

the situation. Connecting a mains powered test frame to the wrong supply will almost certainly cause

extensive damage to the equipment.

The Mecmesin test frames must only ever be connected to a mains power installation that has a fully

installed earthing system.

CONNECTING A MAINS POWERED TEST FRAME TO AN ELECTRICAL POWER OUTLET WITHOUT AN

EARTH CONNECTION IS EXTREMELY DANGEROUS AND COULD LEAD TO A RISK OF ELECTROCUTION.

Mecmesin test frames should only ever be installed in suitable environmental conditions. The

operating temperature should be within the range 5ºC to 40ºC and the relative humidity should not

exceed 92.5%.

After all the above points have been checked and confirmed to be correct you may connect the

machine to the mains outlet only with the supplied mains lead.

When power is applied with the ON/OFF switch in the ‘ON’ position the mains indicator light will illuminate.

This shows power is reaching the machine and it is therefore ready for use.

Check its basic operation with reference to the operating manual.

Operator Training

4 Each person who is to use the machine should be fully trained in the safe use of the motorised testing

machines. The machine has the ability to generate forces large enough to cause permanent damage to

human limbs if placed between the crosshead and the base.

page 7

APPENDIX 1 A GUIDE TO THE SAFE USE OF MAINS POWERED TEST FRAMES

Always disconnect the machine from the mains power supply when not in use to avoid inadvertent actuation

of the machine by untrained personnel.

Protective Clothing

5 Eye protection should always be used in the form of an approved pair of safety spectacles.

They should be replaced if they are scratched or damaged in any way. They should be kept clean and

clear to give maximum visibility to the user.

Extra bodily protection may be necessary if destructive testing or volatile failure of a test piece is likely. A risk

assessment should be carried out prior to using the test frame to ensure that all necessary safety measures have

been considered and carried out.

Machine Guarding

6 If, after the assessment, it is considered that machine guarding is needed, then contact your local

supplier who, through Mecmesin, can arrange the supply of a suitable guard for the required level

of protection.

Continued Safe Use

7 Once the machine is installed it should provide a reliable long term resource for universal testing. If

however the machine fails, or appears to behave in an unusual manner, contact your local supplier for

support. Do not continue to use the machine until it has been checked, and if necessary, repaired and

returned to a safe working condition.

8 If the machine is damaged in use, advise your local supplier and have the machine repaired to a safe

working condition. Do not use the machine until it is repaired.

9. The MultiTest 1 has not been designed for long duration tests at high speed and/or maximum load. A

higher capacity stand (MultiTest 2.5) would be recommended for this type of application.

IF IN DOUBT CONSULT YOUR LOCAL SUPPLIER TO ENSURE CONTINUED SAFE USE

CAUTION: Hands must be kept clear of the crosshead and shroud opening at all times during

machine operation.

LIFTING INSTRUCTIONS: Before attempting to lift the MultiTest 1 turn off the power switch and unplug from

the mains. When lifting the MultiTest 1, support must be provided at the base, as well as at the back of the

shroud, with care being taken to avoid pressing against the adjustable limit switches.

PACKING INSTRUCTIONS FOR MULTITEST 1 AND MULTITEST 2.5 MOTORISED TEST FRAMES

WHEN RETURNING TO MECMESIN LIMITED

1. Set the Crosshead to approximately the centre of the test frame. Remove the four rubber feet from

the base.

2. Place the plastic foam collar over the column ensuring that the collar does not hang over the

base casting.

3. Lay the test frame into the smaller box with the control panel facing upwards and with the base

facing the end with the four holes.

4. Position the wooden back plate on to the box and retain the plate through the box to the base

casting using four M6x35 socket-head screws fitted with large M6 plain washers.

5. Place all accessories listed to be despatched with the stand in the box with the test frame,

including the feet. Ensure that the accessories and operators manual/handbook are suitably

wrapped for protection in transit.

6. Place two of the four plastic foam spacers into the outside box so that they will support the

ends of the inner box (longest sides uppermost).

7. Carefully place inner box into outer box, ensuring that inner box rests evenly on foam spacers.

8. Close and then seal the inner box with a suitable adhesive tape.

9. Place the remaining two foam spacers over the ends of the inner box, so they will support the

ends as per the bottom two spacers.

10. Close and then seal the outer box with a suitable adhesive tape.

11. Attach despatch wallet with relevant paperwork for end destination.

page 8

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