Renishaw LTO2 Installation And User Manual

Installation and user’s guide

H-2000-5032-04-B

LTO2 probe system for lathes

© 2001 Renishaw. All rights reserved.

Disclaimer

Renishaw® is a registered trademark of
Renishaw plc.

This document may not be copied or
reproduced in whole or in part, or transferred
to any other media or language, by any
means, without the prior written permission
of Renishaw.

The publication of material within this
document does not imply freedom from
the patent rights of Renishaw plc.

Renishaw part no: H-2000-5032-04-B

Issued: 11. 2001

Considerable effort has been made to
ensure that the contents of this document
are free from inaccuracies and omissions.
However, Renishaw makes no warranties
with respect to the contents of this document
and specifically disclaims any implied warranties.
Renishaw reserves the right to
make changes to this document and to the
product described herein without obligation
to notify any person of such changes.

Trademarks

All brand names and product names used in
this document are trade names, service marks,
trademarks, or registered trademarks of their
respective owners.

Installation and user's guide
LP2-LTO2 inspection system

S2

FCC DECLARATION (USA)

FCC Section 15.19

This device complies with Part 15 of the FCC rules.
Operation is subject to the following two conditions:

1. This device may not cause harmful interference.

2. This device must accept any interference received,
including interference that may cause undesired
operation.

FCC Section 15.105

This equipment has been tested and found to comply
with the limits for a Class A digital device, pursuant to
Part 15 of the FCC rules. These limits are designed to
provide reasonable protection against harmful
interference when the equipment is operated in a
commercial environment.
This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in
accordance with the instruction manual, may cause
harmful interference to radio communications.
Operation of this equipment in a residential area is likely
to cause harmful interference, in which case you will be
required to correct the interference at your own expense.

FCC Section 15.21

The user is cautioned that any changes or modifications
not expressly approved by Renishaw plc, or authorised
representative could void the user's authority to operate
the equipment.

FCC Section 15.27

The user is also cautioned that any peripheral device
installed with this equipment such as a computer, must
be connected with a high-quality shielded cable to insure
compliance with FCC limits.

GB
SAFETY

Information for the user

Beware of unexpected movement. The user
should remain outside of the full working envelope
of Probe Head/Extension/Probe combinations.

Handle and dispose of batteries according to the
manufacturer's recommendations. Use only
the recommended batteries. Do not allow the
battery terminals to contact other metallic objects.

In all applications involving the use of Machine
Tools or CMMs, eye protection is recommended.

Refer to the machine supplier's operating
instructions.

Information for the machine supplier

It is the machine supplier's responsibility to
ensure that the user is made aware of any hazards
involved in operation, including those mentioned
in Renishaw product documentation, and to
ensure that adequate guards and safety
interlocks are provided.

Under certain circumstances the probe signal
may falsely indicate a probe seated condition.
Do not rely on probe signals to stop machine
movement.

D

SICHERHEITSANWEISUNGEN

Informationen für den Benutzer

Auf unerwartete Bewegungen achten. Der Anwender
sill sich immer außerhalb des Meßtasterkopf-Arm­Meßtaster-Bereichs aufhalten.

Batterien immer gemäß den Anleitungen des
Herstellers handhaben und diese vorschriftsmäßig
entsorgen. Nur die empfohlenen Batterien verwenden.
Die Batterieklemmen nicht in Kontakt mit metallischen
Gegenständen bringen.

Bei der Bedienung von Werkzeugmaschinen oder
Koordinatenmessanlagen ist Augenschutz empfohlen.

Beziehen Sie sich auf die Wartungsanleitungen
des Lieferanten.

Informationen für den Maschinenlieferanten

Es obliegt dem Maschinenlieferanten, den Anwender
über alle Gefahren, die sich aus dem Betrieb der
Ausrüstung, einschließlich der, die in der Renishaw
Produktdokumentation erwähnt sind, zu unterrichten
und zu versichern, dass ausreichende
Sicherheitsvorrichtungen und Verriegelungen
eingebaut sind.

Unter gewissen Umständen könnte das
Messtastersignal falscherweise melden, daß der
Messtaster nicht ausgelenkt ist. Verlassen Sie
sich nicht allein auf Sondensignale, um sich über
Maschinenbewegungen zu informieren.

DK

SIKKERHED

Oplysninger til brugeren

Pas på uventede bevægelser. Brugeren bør holde
sig uden for hele sondehovedets/forlængerens/
sondens arbejdsområde.

Håndtér og bortskaf batterier i henhold til
producentens anbefalinger. Anvend kun de
anbefalede batterier. Lad ikke batteriterminalerne
komme i kontakt med andre genstande af metal.

I alle tilfælde, hvor der anvendes værktøjs- og
koordinatmålemaskiner, anbefales det at bære
øjenbeskyttelse.

Se maskinleverandørens brugervejledning.

Oplysninger til maskinleverandøren

Det er maskinleverandørens ansvar at sikre,
at brugeren er bekendt med eventuelle risici i
forbindelse med driften, herunder de risici,
som er nævnt i Renishaws produktdokumentation,
og at sikre, at der er tilstrækkelig afskærmning og
sikkerhedsblokeringer.

Under visse omstændigheder kan sondesignalet
ved en fejl angive, at sonden står stille. Stol ikke på,
at sondesignaler stopper maskinens bevægelse.

S3

S4

E

SEGURIDAD

Información para el usuario

Tener cuidado con los movimientos inesperados.
El usuario debe quedarse fuera del grupo operativo
completo compuesto por la cabeza de sonda/extensión/
sonda o cualquier combinación de las mismas.

Las baterías deben ser manejadas y tiradas según
las recomendaciones del fabricante. Usar sólo las
baterías recomendadas. No permitir que los
terminales de las mismas entren en contacto
con otros objetos metálicos.

Se recomienda usar protección para los ojos
en todas las aplicaciones que implican el uso de
máquinas herramientas y máquinas de medición
de coordenadas.

Remitirse a las instrucciones de manejo del
proveedor de la máquina.

Información para el proveedor de la máquina

Corresponde al proveedor de la máquina asegurar
que el usuario esté consciente de cualquier peligro
que implica el manejo de la máquina, incluyendo los
que se mencionan en la documentación sobre los
productos Renishaw y le corresponde también
asegurarse de proporcionar dispositivos de protección
y dispositivos de bloqueo de seguridad adecuados.

Bajo determinadas circunstancias la señal de la
sonda puede indicar erroneamente que la sonda
está asentada. No fiarse de las señales de la sonda
para parar el movimiento de la máquina.

F

SECURITE

Informations à l’attention de l’utilisateur

Attention aux mouvements brusques. L'utilisateur
doit toujours rester en dehors de la zone de sécurité
des installations multiples Tête de Palpeur/Rallonge/
Palpeur.

Suivre les conseils du fabricant pour manipuler et
jeter les batteries. Utiliser uniquement les batteries
recommandées. Veiller à ce que les bornes de la
batterie n’entrent pas en contact avec d’autres
objets métalliques.

Le port de lunettes de protection est recommandé
pour toute application sur machine-outil et MMC.

Consulter le mode d’emploi du fournisseur de la
machine.

Informations à l’attention du fournisseur de la
machine

Il incombe au fournisseur de la machine d’assurer
que l’utilisateur prenne connaissance des dangers
d'exploitation, y compris ceux décrits dans la
documentation du produit Renishaw, et d'assurer
que des protections et verrouillages de sûreté
adéquats soient prévus.

Dans certains cas, il est possible que le signal du
palpeur indique à tort l'état que le palpeur est au
repos. Ne pas se fier aux signaux du palpeur qui
ne garantissent pas toujours l’arrêt de la machine.

FIN

TURVALLISUUTTA

Käyttäjälle tarkoitettuja tietoja

Varo äkillistä liikettä. Käyttäjän tulee pysytellä
täysin anturin pään/jatkeen/anturin yhdistelmiä
suojaavan toimivan kotelon ulkopuolella.

Käytä paristoja ja hävitä ne valmistajan ohjeiden
mukaisesti. Käytä ainoastaan suositeltuja
paristoja. Älä anna paristonapojen koskettaa
muita metalliesineitä.

Kaikkia työstökoneita ja koordinoituja mittausko
neita (CMM) käytettäessä suositamme
silmäsuojuksia.

Katso koneen toimittajalle tarkoitettuja
käyttöhjeita.

Tietoja koneen toimittajalle

Koneen toimittaja on velvollinen selittämään
käyttäjälle mahdolliset käyttöön liittyvät vaarat,
mukaan lukien Renishaw’n tuoteselosteessa
mainitut vaarat. Toimittajan tulee myös varmistaa,
että toimitus sisältää riittävän määrän suojia ja
lukkoja.

Tietyissä olosuhteissa anturimerkki saattaa
osoittaa virheellisesti, että kyseessä on anturiin
liittyvä ongelma. Älä luota anturimerkkeihin
koneen liikkeen pysäyttämiseksi.

GR

S5

S6

I

SICUREZZA

Informazioni per l’utente

Fare attenzione ai movimenti inaspettati.
Si raccomanda all'utente di tenersi al di fuori
dell’involucro operativo della testina della sonda,
prolunghe e altre varianti della sonda.

Trattare e smaltire le pile in conformità alle
istruzioni del fabbricante. Usare solo pile del tipo
consigliato. Evitare il contatto tra i terminali delle
pile e oggetti metallici.

Si raccomanda di indossare occhiali di protezione
in applicazioni che comportano macchine utensili
e macchine per misurare a coordinate.

Consultare le istruzioni d’uso del fabbricante
della macchina.

Informazioni per il fabbricante della macchina

Il fornitore della macchina ha la responsabilità di
avvertire l'utente dei pericoli inerenti al
funzionamento della stessa, compresi quelli
riportati nelle istruzioni della Renishaw, e di
mettere a disposizione i ripari di sicurezza e gli
interruttori di esclusione.

È possibile, in certe situazioni, che la sonda
emetta erroneamente un segnale che la sonda
è in posizione. Evitare di fare affidamento sugli
impulsi trasmessi dalla sonda per arrestare la
macchina.

NL

VEILIGHEID

Informatie voor de Gebruiker

Oppassen voor onverwachte beweging. De gebruiker
dient buiten het werkende signaalveld van de
Sondekop/Extensie/Sonde combinaties te blijven.

De batterijen volgens de aanwijzingen van de
fabrikant hanteren en wegdoen. Gebruik uitsluitend
de aanbevolen batterijen. Zorg ervoor dat de
poolklemmen niet in contact komen met andere
metaalhoudende voorwerpen.

Het dragen van oogbescherming wordt tijdens
gebruik van Machinewerktuigen en CMM’s
aanbevolen.

De bedieningsinstructies van de machineleverancier
raadplegen.

Informatie voor de Machineleverancier

De leverancier van de machine is ervoor
verantwoordelijk dat de gebruiker op de hoogte
wordt gesteld van de risico’s die verbonden zijn
aan bediening, waaronder de risico’s die vermeld
worden in de produktendocumentatie van Renishaw.
De leverancier dient er tevens voor te zorgen dat de
gebruiker is voorzien van voldoende beveiligingen
en veiligheidsgrendelinrichtingen.

Onder bepaalde omstandigheden kan het
sondesignaal een onjuiste sondetoestand aangeven.
Vertrouw niet op de sondesignalen voor het stoppen
van de machinebeweging.

P

SEGURANÇA

Informações para o Utilizador

Tomar cuidado com movimento inesperado.
O utilizador deve permanecer fora do perímetro
da área de trabalho das combinações Cabeça
da Sonda/Extensão/Sonda.

Manusear e descartar baterias de acordo com as
recomendações do fabricante. Utilizar apenas as
baterias recomendadas. Não permitir que os
terminais da bateria entrem em contacto com
outros objectos metálicos.

Em todas as aplicações que envolvam a utilização
de Máquinas-Ferramenta e CMMs, recomenda-se
usar protecção para os olhos.

Consultar as instruções de funcionamento do
fornecedor da máquina.

Informações para o Fornecedor da Máquina

É responsabilidade do fornecedor da máquina
assegurar que o utilizador é consciencializado
de quaisquer perigos envolvidos na operação,
incluindo os mencionados na documentação
do produto Renishaw e assegurar que são for
necidos resguardos e interbloqueios de
segurança adequados.

Em certas circunstâncias, o sinal da sonda pode
indicar falsamente uma condição de sonda
assentada. Não confiar em sinais da sonda
para parar o movimento da máquina.

SW

S7

SÅKERHET

Information för användaren

Se upp för plötsliga rörelser. Användaren bör
befinna sig utanför arbetsområdet för
sondhuvudet/förlängningen/sond-kombinationerna.

Hantera och avyttra batterier i enlighet med
tillverkarens rekommendationer. Använd endast
de batterier som rekommenderas. Låt ej
batteriuttagen komma i kontakt med andra
metallföremål.

Ögonskydd rekommenderas för alla tillämpningar
som involverar bruket av maskinverktyg och CMM.

Se maskintillverkarens bruksanvisning.

Information för maskinleverantören

Maskinleverantören ansvarar för att användaren
informeras om de risker som drift innebär,
inklusive de som nämns i Renishaws
produktdokumentation, samt att tillräckligt goda
skydd och säkerhetsförreglingar tillhandahålls.

Under vissa omständigheter kan sondens signal
falskt ange att en sond är monterad. Lita ej på
sondsignaler för att stoppa maskinens rörelse.

Installation and users guide

WARRANTY

Equipment requiring attention under warranty
must be returned to your supplier. No claims will
be considered where Renishaw equipment has
been misused, or repairs or adjustments have
been attempted by unauthorised persons.

CHANGES TO EQUIPMENT

Renishaw reserves the right to change
specifications without notice.

CNC MACHINE

CNC machine tools must always be operated
by competent persons in accordance with
manufacturers instructions.

CARE OF THE PROBE/LTO2-OMP

Treat the equipment as a precision instrument.

IP RATING IPX8.
PATENT NOTICE

Features of Renishaw products are the subject
of one or more of the following patents and
patent applications:

EP 0283486
EP 0337669
JP 2,653,806

JP 21,794/1990
US 4899094
US 5,150,529

Contents

1-1

INSTALLATION

Typical probe systems … … 1-2

Two OMM's and remote indicator … 1-3

Performance envelope … … 1-4

System performance … … 1-6

Battery power … … … 1-7

Stylus on-centre adjustment … 1-8

MA4 90° adaptor … … 1-9

OPERATION

System operation … … 1-10

SCREW TORQUE VALUES … 1-11

FAULT FINDING … … … 1-12

APPENDIX 1 Adaptors and extensions 1-15

APPENDIX 2 PSU3 power supply unit 1-16

APPENDIX 3 Optical module machine 1-16

APPENDIX 4 MI 12 interface … 1-17

APPENDIX 5 Optical machine interface 1-18

APPENDIX 6 LTO2-OMP switch setting 1-20

PARTS LIST … … … 1-21

1-2

TYPICAL PROBE SYSTEMS

The LTO2-OMP mounts in a tool
position on the lathe turret.
A workpiece set-up or inspection
cycle may be introduced at any
stage of the machining process.

OMM (one or two)
+ MI 12

Signals are transmitted

+ CNC control

between the probe and the
machine control, via the
OMP and OMM + MI 12
or alternatively the OMP
and O-M-I.

Interface units convert
probe signals into an
acceptable form for the
CNC machine control.

MI 12 interface unit

or MI 12 board

Mounting
bracket

Cable

Optional - PSU3

power supply unit

Optional - PSU3

power supply unit

CNC

machine

control

O-M-I (one only)

+ CNC control

Workpiece

MI 5, MI 8 or MI 8-4

OMM - Optical module machine
OMP - Optical module probe
O-M-I - Optical machine interface

Stylus

LP2 or LP2H

inspection probe

Typical tool

setting probe

interface unit

LTO2-OMP

Lathe
turret

Socket for LP2

TWO OMM's and REMOTE INDICATOR

1-3

Cable

OMM 1

MI 12 interface unit

or MI 12 board

Optional - PSU3

CNC

power supply unit

machine

control

REMOTE INDICATOR (OPTIONAL)

If the MI 12 is hidden from the operator,
a remote lamp or bleeper may be placed in
a position where it is easily seen or heard.

Workpiece

OMM 2

LTO2-OMP

Stylus

LP2 or LP2H

inspection probe

TWO OMMs

If it is not possible for one OMM to
cover the full range of movement of
the LTO2 OMP, then a second OMM
may be added. Both OMM's act as
one receiver over the area they cover.

Lathe
turret

1-4

OPERATING ENVELOPE - see note page 1-6

LP2-LTO2 + OMM

Probe and OMM diodes must be
mutually in each others field of
view, and within the performance
envelope shown

SWITCH-ON/OFF RANGE

The OMP must be within
2 m (6.6 ft) of the OMM.

OPERATING RANGE

The OMP must be within
2 m (6.6 ft) of the OMM.

60°

Rotation of OMP window
to be within +/-15 degrees
of optical centreline.

Optical

centre

line

Range metres (feet)

SWITCH ON/OFF

OPERATING

45°

60°

30°

45°

30°

2 (6.6)

15°

0,5 (1.6)

15°

1,5 (4.9)

OMM

1 (3.3)

0°

1,5 (4.9)

15°

15°

30°

2 (6.6)

60°

45°

30°

45°

60°

1 (3.3)

0,5 (1.6)

LTO2- OMP

OPERATING ENVELOPE - see note page 1-6

1-5

LP2-LTO2 + O-M-I

Probe and O-M-I diodes must be
mutually in each others field of view,
and within the performance envelope
shown.

SWITCH-ON/OFF RANGE

The OMP must be within
2 m (6.6 ft) of the O-M-I.

OPERATING RANGE

The OMP must be within
2 m (6.6 ft) of the O-M-I.

60°

Rotation of OMP window
to be within +/-15 degrees
of optical centreline.

Optical

centre

line

Range metres (feet)

SWITCH ON/OFF

OPERATING

45°

60°

30°

45°

2 (6.6)

30°

15°

15°

1,5 (4.9)

O-M-I

0,5 (1.6)

1 (3.3)

0°

1,5 (4.9)

15°

15°

2 (6.6)

60°

45°

30°

30°

45°

60°

1 (3.3)

0,5 (1.6)

LTO2- OMP

1-6

SYSTEM PERFORMANCE

OPERATING ENVELOPE

See pages 1-4 and 1-5

Natural reflective surfaces within the machine may
increase the signal transmission range.
Coolant residue accumulating on the OMP, OMM
or O-M-I windows will have a detrimental effect
on transmission performance. Wipe clean as often as
is necessary to maintain unrestricted transmission.
Peformance in ambient temperature range 5°- 50° C
(41°- 122° F) is shown on pages 1-4 and 1-5.
Operation in temperatures of 0° to 5° C or 50° to 60° C
(32° to 41° F or 122° to 140° F) will result in some
reduction in range.

WARNING

If two systems are operating in close proximity to each
other, take care to ensure that signals transmitted from
the OMP on one machine, are not received by the OMM
or O-M-I on the other machine, and vice versa.

OMM and O-M-I POSITION

To assist finding the optimum position of the OMM
during system installation, signal strength outputs
are available on the MI 12 interface. O-M-I signal
strength is displayed on an O-M-I multi-coloured
LED.

ENVIRONMENT

PROBE-LTO2
OMM MI 12
O-M-I PSU3

TEMPERATURE

Storage -10°C to 70° C (14°F to 158° F)

Operating 5°C to 50° C (41°F to 122° F)

DO NOT ALLOW COOLANT
OR DEBRIS TO ENTER THE
BATTERY COMPARTMENT

BATTERY POWER

Battery booster module

1-7

3V lithium battery

End cover

Tighten

3mm hexagon key

The O-M-I or MI 12 interface low battery LED will
light up when the battery needs to be replaced.
This must be done as soon as is practicable
following a gauging cycle.

To replace the battery, use a 3 mm hexagon key
to remove the battery cap. If battery cap is not
accessible, remove the OMP from the machine.
When replacing the battery insert the battery + end
first, then replace the cap. The battery cap screw
torque value is 1 Nm (0.74 lbf.ft).

If the OMP has been removed from the machine,
replace the OMP and recalibrate the probe system,
before commencing the next gauging cycle.

TYPICAL BATTERY LIFE

Duracell lithium battery type DL123A

5% USAGE

STAND-BY

LIFE

65 days

72 min/day

Optical on

Timer off

35 days

CONTINUOUS

LIFE

Optical on

Timer off

88 hours

1-8

The stylus tip can be adjusted to
correspond with the nominal tool tip
position with the aid of an on-centre
adjuster ring and 3 mm AF hexagon
key.

Align the OMP with the OMM/O-M-I,
then clamp the OMP in the turret.
The probe can now be moved
relative to the OMP.

1. Slacken screws A 1/4 to 1/2

a turn. Spring washers will
maintain a light grip.

2. Place adjuster ring on OMP,
and position with one set of
opposing screws B in line
with the machines Y axis.

3. Tighten screws C.

4. Adjust one screw B at a time,
ensuring the opposing screw
remains clear of the body.
When the stylus is correctly
positioned, tighten screws A.

5. Slacken screws C and remove
the adjuster ring.

STYLUS ON-CENTRE ADJUSTMENT

C

A

B

Adjuster ring

X Axis

The MA4 right angle adaptor is
attached to the OMP and enables
the probe to be mounted at 90°
to the machine spindle centre line

This extra versatility allows
the probe to reach otherwise
inaccessible workpiece features.

MA4 90° ADAPTOR

C spanner

1-9

LTO2

The MA4 screws into the OMP,
and is tightened with the
C spanner. The C spanner is
also used to tighten the LP2
probe in its mounting.

After the MA4 is tightened in
the OMP, the three screws A
can be slackened. The MA4
can then be rotated and set in
any position through 360°.

Finally retighten the three screws A.

Extension bars up to 150 mm long
can be used between the MA4 and
probe.

See screw torque values page 1-11

MA4

A

360°

LP2

2,5 mm AF

1-10

OMM, MI 12 and O-M-I LED's continuously indicate system status during operation.

STAND-BY MODE/OPERATING MODE

To conserve battery life, the LTO2 is held in the
stand-by mode, until a switch-on signal is sent from
the CNC control, via the OMM + MI 12 or O-M-I.
The LTO2 is only active during the operating mode.

LTO2 SWITCH-ON

To initiate an inspection routine, the probe is
indexed to the tool cutting position, and switch-on
is commanded.

SWITCH-ON OPTIONS

1. Machine Start - Software M code command.

2. MI 12 interface manual start (OMM version only).

3. Auto Start - start signal at one second intervals.

The MI 12 and O-M-I are factory set to
machine start.

LTO2-OMP SWITCH-OFF (TIME-OUT OPTIONS)
A timer switches the OMP off, after a selected time
interval known as time out. Four time-out options
are available - 5 sec, 9 sec, 33 sec or 134 sec.

The LTO2 is factory set to time-out after 33 sec.

SYSTEM OPERATION

During the operating mode each probe contact
causes the timer to reset-on for a further 33 sec

(factory set)

probe contacts are made, the LTO2 reverts
to stand-by mode after 33 sec or 134 sec.
(33 sec or 134 sec reset times apply to 5sec and
9 sec time out options if the probe is triggered).

Note: A start signal will also reset the timer.

DEBOUNCE TIME

When the probe switches off, there is a delay
before it can be switched back on again.
This is known as the debounce time.
Two debounce time options are available

- 5 sec or 9 sec.

The debounce time is factory set to 5 sec.

or 134 sec

Time out and debounce switch settings

are shown on page 1-20.

(optional)

, if no further

SCREW TORQUE VALUES Nm (lbf ft)

1-11

3 mm AF

2 Nm (1.47 lbf.ft)

8 mm AF
5 Nm
(3.68 lbf.ft)

HOLD

STYLUS

1,20 - 1,3 Nm

(0.87 - 0.94 lbf.ft)

Weak link

PROBE

OMM

or

O-M-I

25 mm AF

25 Nm

(18.44 lbf.ft)

EXTENSION

2,5mm AF

(0.81 lbf.ft)

1,1 Nm

M16 THREAD

10 - 12 Nm (7.37 - 8.84 lbf. ft)

20 Nm (14.74 lbf.ft)

3 mm AF

2,6 Nm

(1.91 lbf.ft)

LTO2-OMP

M16

M16

Normal

Maximum

3 mm AF

1 Nm

(0.73 lbf.ft)

C spanner

2 Nm

(1.47 lbf.ft)

Weak link

1,20 - 1,3 Nm

(0.87 - 0.94 lbf.ft)

1-12

FAULT FINDING - If in doubt, consult your probe supplier.

PROBE FAILS TO SWITCH ON

Probe is already If necessary switch
switched on. probe off.

Dead battery. Change battery.
Battery installed Check battery installation.

incorrectly.
Probe not properly Check alignment and if

aligned with OMM/O-M-I. OMM/O-M-I fixing is secure.
Beam obstructed. Check if OMM/O-M-I window

is clean/remove obstruction.

OMM/O-M-I signal See performance envelope.
too weak. See pages 1-4 and 1-5.

No O-M-I start signal See page 1-18.
No power to MI 12 Check if stable 24 V supply is

or O-M-I available.

Check connections and fuses.

PROBE STOPS IN MID-CYCLE

Beam obstructed. Check O-M-I/MI 12

error LED.

Remove obstruction.
Probe collision. Find cause and rectify.
Damaged cable. Check cables.
Power supply lost. Check power supply.
Probe unable to find Part missing or out of

target surface. position.

PROBE CRASHES

Inspection probe using When two systems active,
tool setting probe isolate tool setting probe.
signals.

Workpiece obstructing Review probe software.
probe path.

Probe length offset Review probe software.
missing.

POOR PROBE REPEATABILITY

Debris on part. Clean part.
Turret Verify probe repeatability

repeatability poor. using single point move.
Loose mounting of Check and tighten as

probe/loose stylus. appropriate.
Calibration and update Review probe software.

of offsets not occuring.
Calibration and probing Review probe software.

speeds not the same.
Calibrated feature has Check position.

moved.
Measurement occurs as Reveiw probe software.

stylus leaves surface.

FAULT FINDING - If in doubt, consult your probe supplier.

1-13

POOR PROBE REPEATABILITY

Probing occurs within Review probe software.
machines acceleration
and deceleration zones.

Probe feedrate too high. Perform simple repeatability

trials at various speeds.

Temperature variation Minimise temperature
causes excessive changes.
machine and Increase frequency
workpiece movement. of calibration.

Machine has poor Perform health check on
repeatability due to machine.
loose encoders, tight
slideways and/or
accident damage.

PROBE FAILS TO SWITCH OFF

Probe in Time Out mode. Wait a minimum 2 min

20 sec for probe to switch
off.

Turret indexed, while Restore turret to probing
probe switched on. position.

Probe is inadvertantly Increase distance between
switched on by probe and OMM/O-M-I.
OMM/O-M-I. Reduce OMM/O-M-I signal

strength.

PROBE STATUS LED FAILS TO ILLUMINATE

Battery incorrectly Check battery installation.
fitted.

MI 12 POWER LED FAILS TO ILLUMINATE
WITH POWER ON

Faulty electrical contact. Check all connections.
Fuse blown. Locate and replace blown

fuse.

Incorrect power supply. Ensure power supply is

24 V DC.

MI 12 ERROR LED REMAINS ILLUMINATED

Beams not aligned.Check optical alignment.

Beams obstructed. Clear obstruction.

Probe not switched on. Check if switched on.

MI 12 LOW BATTERY LED REMAINS ILLUMINATED

Battery incorrectly Check battery installation.
fitted.

Battery dead. Replace battery.

PROBE STATUS LED REMAINS ILLUMINATED

Battery voltage below Replace battery.
useable level.

1-14

FAULT FINDING - If in doubt, consult your probe supplier.

PROBE IS TRANSMITTING SPURIOUS READINGS

Damaged cables. Check and replace cable if

damage is found.

Electrical or optical Move transmission cables
interference. away from other cables

carrying high currents.

System malfunctiong or Shield from intense light
inducing intermittent errors. sources e.g. xenon beams.
Electrically isolate OMM from the machine to

prevent any possibility
of earth loop.

Ensure there are no arc
welders, stroboscopes or
other high intensity light
sources in close proximity
to the probe system.

Poorly regulated power Ensure power supply is
power supply. correctly regulated.

Excessive machine vibration. Eliminate vibration.
Loose mountings or styli. Check and tighten loose

connections.
Low LP2 spring pressure. Increase spring pressure.

PROBE FAILS TO RESEAT CORRECTLY

Probe trigger occurred Move stylus clear of
on reseat. workpiece.

Inner probe diaphragm Return to supplier if inner
is damaged. diaphragm is damaged.

Adaptors and extensions are fully described in data sheet AEH H-2000-2120

MA4 90° ADAPTOR

The MA4 90° adaptor
enables the LP2 probe
to be mounted at 90°
to the machine turret,
and set through 360°.

The MA4 uses the same
M16 thread as the LP2.

LPE EXTENSION BARS

Further reach is obtained
by adding an LPE extension
bar between the LP2 probe
and LTO2.

Extensions use the same
M16 thread as the LP2.

A maximum of one extension
is permitted per installation

APPENDIX 1

ADAPTOR and EXTENSIONS

dimensions mm (in)

360°

15 (0.59)

Stylus

40,8

(1.6)

LP2 Probe

40,8
(1.6)

Ø40

(1.57)

LPE

Extension Bar

Ø25 (0.98)

LPE1 50 (1.96)
LPE2 100 (3.94)
LPE3 150 (5.90)

33,2 (1.30)

38 (1.49)

32

(1.25)

1-15

24

(0.94)

Ø25 (0.98)
Tolerance g6

59,7

(2.35)

1-16

APPENDIX 2

PSU3 POWER SUPPLY UNIT

The PSU3 is fully described in

User's Guide H-2000-5057

The PSU3 provides a +24 V supply for Renishaw
interface units when a power supply is not
available from the CNC machine control.

Front view

Power LED

(Light Emitting Diode)

When the green LED is lit,

the power supply is on.

Rear view

Mains switch

On/Off

OMM (OPTICAL MODULE MACHINE)

APPENDIX 3

The OMM is fully described in

User's Guide H-2000-5044

1

3

KEEP WINDOW CLEAN

To fully maintain

effective signal

transmission

1. Red LED

Lit when power is on.

2. LED's x 3

Transmit infra-red control signals
to the probe.

3. Green LED

Lit when signal is received from
the probe.

4. Yellow LED

Lit when the MI 12 sends a start,
error, reset signal to the probe.

2

4

APPENDIX 4

MI 12 INTERFACE UNIT

The MI 12 is fully described in

User's Guide H-2000-5073

1 2 3 4 5 6

1-17

MI 12

MI 12-B

1. Audible indicator (bleeper)

The speaker is behind the front panel.

2. LED error

Lit when optical beam obstructed,
probe out of range, probe switched off,
etc.

3. LED low battery
Replace probe battery as soon as
practicable, after this LED lights up.

4. LED probe status

Lit when probe is seated.
Off when stylus is deflected or an error
has occurred.

5. LED power

Lit when power is on.

6. Start button - switch SW1

Manual start push button.
Press button to switch system to operating
mode. Alternatively a signal from the machine
control can be used for the same purpose.

1-18

O-M-I (OPTICAL MACHINE INTERFACE)

APPENDIX 5

The O-M-I is fully described in

User's Guide H-2000-5062

1. LED (yellow) – START signal status.

Lit when a START signal is transmitted to
the probe.
This LED will either flash once when a
machine controlled START signal is
commanded, or flash continuously at one
second intervals when the system is set to
'Auto–Start' mode and is awaiting a probe
transmission signal.

2. LED (red, yellow, green) – Infra red SIGNAL
strength received from probe.

As long as there is power to the system, this LED will
always be lit. It is a tri–colour LED and indicates as
follows :
Red - Signal received from the probe is

either

too weak or not there at all

(i.e. no signal).

Yellow - Signal received is marginal.

i.e. The O-M-I is at the edge of its
operating envelope. Correct operation
in this region cannot be guaranteed.

Green - Signal received is good and system will

operate correctly.

Note :

1. During a start transmission, the SIGNAL
LED will change through red to yellow and green.
This is the normal power up sequence.

2. The SIGNAL LED will flash (yellow or green)
if optical interference is being received whilst
the probe is not transmitting.

1-19

1

4

3. LED (clear x 3)

These LEDs transmit infra-red control
signals to the probe.

4. LED (red) – LOW BAT.

When the OMP battery voltage falls below
a set level, the low battery output device
changes state, and causes the LOW BAT
LED to commence flashing on and off
4 times per second.
Replace the OMP battery as soon as is
practicable after the LED starts flashing.

3

MAGNETIC LABEL

KEEP WINDOW CLEAN

To fully maintain

effective signal

transmission

2

6

To assist the machine operator,
a summary of O-M-I LED
activity is provided on a
magnetic label, which may be
attached to the machine tool.

5. LED (red, green) – PROBE STATUS.

5

This bi–colour LED is lit when the O-M-I is powered.
Green - Probe is seated.
Red - Probe is triggered or an

error has occurred.
The change of colour of this LED will coincide with the
Probe Status output devices changing state.

6. LED (red) – ERROR.

Lit when an error condition exists.
i.e. optical beam obstructed, probe out of optical range,
probe has switched off or battery is exhausted.
When an error condition exists the Probe Status output
will be held in a triggered state and the Probe Status LED
will be RED.
The Error LED illuminating will coincide with the error
output device changing state.

1-20

APPENDIX 6

LTO2-0MP SWITCH SETTING

To gain access to the setting switches,

remove the two front plate screws and front plate.

● Keep all components clean - do not allow

particles to enter the probe.

● Do not strain or disconnect wires.

Dished Washer
Flat Washer

Front Plate

Time-out switch

SW1 SW2 SW3

● Use only the correct washers.

● Do not use the tip of pencil for switch

adjustment.

● Do not touch electronic components

when changing switch settings.

Screw - tighten to

2,6 Nm (1.91 lbf.ft)

TERMS

see page 1-10 for explanation of terms

Time

out

5
9

❃

33

SW1 SW2 SW3

ON

ON

OFF

OFF

ON

OFF

ON

OFF

ON

ON

OFF

OFF

Factory set

❃

Seconds

134

Debounce

time

Seconds

5
9

❃

5
5

PARTS LIST - Please quote the Part No. when ordering equipment.

Type Part No. Description

1-21

System kit A-2030-0100 Comprising: LP2 probe, PS3-1C stylus, LTO2-OMP, OMM with mounting

System kit A-2030-0101 Comprising: LP2H probe, PS3-1C stylus, LTO2-OMP, OMM with

System kit A-2115-0028 Comprising: LP2 probe, PS3-1C stylus, LTO2-OMP, O-M-I with mounting

System kit A-2115-0029 Comprising: LP2H probe, PS3-1C stylus, LTO2-OMP, O-M-I with

LTO2-OMP A-2030-0121 LTO2-OMP (25 mm shank) complete with battery , 3 mm hexagon key,

Battery P-BT03-0006 3V lithium battery - Duracell type DL123A
Battery cap A-2030-0370 Battery cap assembly.
LP2 A-2063-6098 LP2 probe complete with two C spanners and TK1 tool kit.
LP2H A-2064-0002 LP2H probe complete with two C spanners and TK1 tool kit.
Service kit A-2063-7542 LP2 service kit comprises: front cover, eyelid seal, spring and O ring.
MA4 adaptor A-2063-7600 MA4 90° adaptor.
Extension bar A-2063-7001 LPE1- extension bar Ø25 x 50 mm long.
Extension bar A-2063-7002 LPE2- extension bar Ø25 x 100 mm long.
Extension bar A-2063-7003 LPE3- extension bar Ø25 x 150 mm long.
Stylus A-5000-3709 Ceramic PS3-1C stylus 50 mm long with Ø6 mm ruby ball.
Protection M-5000-7582 Stylus adaptor with weak link collision protection for straight steel styli.
Protection M-5000-7587 Screw with weak link collision protection for disk steel styli.
Protection M-5000-7588 Screw with weak link collision protection for swivel adaptor.
TK1 A-2053-7531 Probe head tool kit comprising:

C spanner A-2063-7587 C spanner.

bracket and MI 12 interface unit.

mounting bracket and MI 12 interface unit.

bracket.

mounting bracket.

stylus on-centre adjuster and user's guide.

stylus tool, hexagon keys 1.5 mm, 2,0 mm, 2,5 mm and 4,0 mm.

Renishaw plc

New Mills, Wotton-under-Edge,
Gloucestershire, GL12 8JR
United Kingdom

Renishaw worldwide

Australia

Renishaw Oceania Pty Ltd,
Sandringham

T [phone]
F [phone]
E [e-mail]

Brazil

Renishaw Latino Americana Ltda,
São Paulo

T [phone]
F [phone]
E [e-mail]

The People’s Republic of China

Renishaw Representative Office,
Beijing

T [phone]
F [phone]
E [e-mail]

Renishaw Representative Office,
Shanghai

T [phone]/5697
F [phone]
E [e-mail]

France

Renishaw S.A., Marne la Vallée

T [phone]
F [phone]
E [e-mail]

T [phone]
F [phone]
E [e-mail]

www.renishaw.com

Germany

Renishaw GmbH, Pliezhausen

T [phone]
F [phone]
E [e-mail]

Hong Kong

Renishaw (Hong Kong) Ltd,
Kowloon Bay

T [phone]
F [phone]
E [e-mail]

India

Renishaw Metrology Systems Pvt
Ltd, Bangalore

T [phone]
F [phone]
E [e-mail]

Indonesia

Renishaw Representative Office,
Jakarta

T [phone]
F [phone]
E [e-mail]

Italy

Renishaw S.p.A., Torino

T [phone]
F [phone]
E [e-mail]

Japan

Renishaw K.K., Tokyo

T [phone]
F [phone]
E [e-mail]

The Netherlands

Renishaw International BV, Breda

T [phone]
F [phone]
E [e-mail]

Singapore

Renishaw Representative Office

T [phone]
F [phone]
E [e-mail]

Slovenia

RLS merilna tehnika d.o.o., Ljubljana

T [phone]
F [phone]
E [e-mail]

South Korea

Renishaw Liaison Office, Seoul

T [phone]
F [phone]
E [e-mail]

Spain

Renishaw Iberica S.A., Barcelona

T [phone]
F [phone]
E [e-mail]

Switzerland

Renishaw A.G., Pfäffikon

T [phone]
F [phone]
E [e-mail]

Taiwan

Renishaw Representative Office

T [phone]
F [phone]
E [e-mail]

UK (Head Office)

Renishaw plc, Gloucestershire

T [phone]
F [phone]
E [e-mail]

USA

Renishaw Inc., Illinois

T [phone]
F [phone]
E [e-mail]

For all other countries

T [phone]
F [phone]
E [e-mail]