Renishaw MI 12 interface unit Installation & User's Guide

Installation and user’s guide

H-2000-5073-05-J

MI 12 interface unit

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-2000-5073-05-J

Issued: 03.2003

Disclaimer

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.

Manuel d'installation et d'utilisation

Interface MI 12

MI 12 Interface

Guida d'installazione ed uso

Interfaccia MI 12

Installations und Anwenderhandbuch

MI 12 interface

2-0

4-0

3-0

Français

Italiano

Deutsch

1-0

English

Installation and user's guide

S2

GB

WARNINGS

Information for the user

Replace blown fuses with new components of

the same type. Refer to the SAFETY section of

the relevant product documentation.

Remove power before performing any maintenance

operations.

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.

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 harmfull 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.

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Installation and user’s guide - English

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.

MI 12 MAINTENANCE

No maintenance or cleaning is required.

IP RATING

IP30.

ENVIRONMENT

Temperature

The MI 12 is specified for storage over

–10° to 70° C (14 to 158° F) and operation

over 5° to 60° C (41° to 140° F) ambient

temperature range.

The MI 12-B is a bare board version of

the MI 12. In order for this product to

achieve satisfactory EMC susceptibility

performance, it must be mounted in a

suitable machined or extruded enclosure.

1-1

SAFETY

Ensure the machine tool is in a safe

state, and power is removed from

the unit before removing cover.

Only qualified persons should adjust

switches or replace fuses.

Contents

MI 12 INTERFACE PANEL MOUNTING KIT … … 1-2

MI 12 INTERFACE UNIT ………… 1-4

MI 12 AND MI 12-B ………… 1-5

LED - DIAGNOSTIC DISPLAY ……… 1-6

MI 12 OUTPUT WAVEFORMS ……… 1-7

SWITCH SW2 … ……… 1-8

SWITCH SW3 …………… 1-9

FUSES ……………1-10

TEST POINTS for SIGNAL STRENGTH … … 1-10

WIRING DIAGRAM …………1-11

1-2

The interface unit may be mounted

inside the CNC machine cabinet,

using the optional panel mounting

kit.

Holes must be cut in the

machine protective panel to

accept the MI 12 front panel

and fixing screws as shown

in diagram.

A. Four countersunk holes

Ø8,5 to Ø5 mm (Ø0.33 to Ø0.19 in)

B. Six holes

Ø4 mm (Ø0.16 in) through.

Counterbore Ø7 x 1 mm

(Ø0.27 x 0.04 in) deep.

PANEL CUT OUT

B

A

Ø8,5 (0.33)

Ø5 (0.19)

2,64 (12 SWG)

45

°

Ø4 (0.16)

Ø7 (0.27)

1 (0.04)

69 (2.7)

30 (1.18)

56 (2.20)

13 (0.52)

6,5 (02.5)

135 (5.31)

76 (2.99)

152 (5.98)

A

Ø8,5 (0.33)

Dimensions mm (in)

MI 12 INTERFACE UNIT

PANEL MOUNTING KIT

Part no. A-2033-0690

B

1-3

1. Fit brackets A to panel B with

screws, washers and nuts.

(A self clinching stud may be

used in place of screw).

2. Remove protective paper

from gasket C. Attach gasket C

to bezel D.

3. Fit bezel D to panel B

using washers and nuts.

4. Remove base plate G

from interface unit F.

5. Remove footpads H

from base plate G.

6. Insert grommet K into

four baseplate holes.

7. Fit baseplate G within

brackets A.

8. Mount Interface cabinet F

onto baseplate G.

9. Slide cabinet F towards

bezel D to form a good seal.

10. Fit washers and screws L.

MI 12 INTERFACE UNIT

PANEL MOUNTING ASSEMBLY

B

F

G

A

D

C

A

L

H

K

1-4

MI 12 INTERFACE UNIT

CNC machine tools using a Renishaw probe system for workpiece set-up and inspection require

an interface unit, to convert probe signals into an acceptable form for the CNC machine control.

The MI 12 interface unit is for probe systems using optical signal transmission.

WORKPIECE SET-UP and INSPECTION

Machining centre

WORKPIECE SET-UP and INSPECTION

Lathe

OMM 1

OMM 2

MP3-7-8-9-10-12

or 700 probe

(MP10 shown)

Workpiece

OMM

LP2 probe

MI 12

or

MI 12-B

Lathe

turret

MI 12

or

MI 12-B

PSU3

power

supply

unit

Optional

Remote indicator

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, when probe trigger occurs.

OMM - Optical module machine

The MI 12 can process the signals from one or two

OMMs. The reception cones of OMM 1 and OMM 2

overlap, so they act as one receiver.

LTO2 or LTO2S/R module

(LTO2 shown)

CNC

machine

control

CNC

machine

control

There are two versions of the

MI 12 interface.

1. MI 12 interface unit

The interface is contained

within a Renishaw enclosure,

which is free standing or attached

to the panel mounting kit.

2. MI 12-B

Board only for mounting within

the machine tool cabinet.

MI 12 board only (MI 12-B)

The MI 12 board is panel mounted,

using either a set of self adhesive feet

or alternative M4 support studs.

Power supply

The MI 12 interface can draw its

supply from the CNC machine +15 V

to 30 V d.c. and presents a load of up

to 400 mA.

Alternatively, power may be supplied

from a Renishaw PSU3 power

supply unit

- see Users guide H-2000-5075.

1-5

MI 12 and MI 12-B

MI 12 interface unit Part no. A-2075-0142

MI 12-B Part No. A-2075-0141

82 (3.23)

124 (4.88)

9 (0.35)

19,5

(0.76)

127 (5)

160 (6.3)

131 (5.15)

196

(7.71)

57 (2.24)

M4

33 (1.3)

✽

=

Ø4,2 (Ø0.16)

✽

Dimensions mm (in)

100 (3.94)

1-6

MI 12

MI 12-B

System status

System status is presented visually

in a continuously updated form,

on the front panel diagnostic LED

display, and by outputs available

from the MI 12 to the CNC control.

Outputs from MI 12

There are four solid state relay

(SSR) outputs, comprising two

probe complementry outputs,

an error output and a low battery

output.

Maximum current ±40 mA peak

Maximum voltage ±50 V peak

EACH SSR OUTPUT IS

PROTECTED FROM OVERLOAD

BY A 62 mA FUSE.

Remote audible indicator

In addition there is one output for

a remote audible indicator or lamp,

which can be located near the

machine operator.

The output will sink 100 mA and

should have no more than +50 V d.c.

applied to it. The output will remain

active for 44 ms after each probe

change of state.

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 batteries 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.

LED - DIAGNOSTIC DISPLAY

1 2 3 4 5 6

1-7

The output signals from the interface must be compatible with the machine control input.

INTERFACE - OUTPUT WAVEFORMS

Probe

reseat

Closed

Normally open

Closed

SKIP

Closed

SKIP

ERROR

Closed

ERROR

Open

MI 12

OUTPUTS

Triggered Seated

PROBE

Seated

Probe

switch

off

Low

battery

Error

clear

Error

e.g. beam cut

Probe

trigger

Solid

state relay

Relay

On

Off

PROBE

STATUS

PROBE

STATUS

LOW

BATTERY

AUDIO

EXTENSION

Normally closed

Normally open

Closed

Normally open

Normally open Closed

Probe

switch

On

Normally closed

G

S 0 V

D

OCT

250mA

<

➤

1-8

The manual start switch SW1 is

disabled for the duration of the

MACHINE START input signal.

SW2

To initiate a MACHINE START signal,

an input of between 4,25 V at 1 mA

and 30 V at 10 mA is required

between terminals 21(+) and 22 (-).

(TTL compatible when connected

between +5 V and TTL output).

This is an isolated input.

Minimum pulse width is 1 ms.

Maximum pulse width is 150 ms.

AUTO START selection causes the

system to send a start signal once

every second and does not require

a CNC machine control input.

AUTO START should only be used

when no output from the machine

control is available. If this mode

is selected, care should be taken

to ensure system signals are not

receivable from probing systems

on other machines.

SWITCH SW2

This switch is factory set as shown

in diagram i.e. machine start and

standard OMMs.

18 1

24 19

Terminal block

SW3

SW1

see page 1-6

{

Special

(OMM-C)

Standard

{

OMM 1

OMM 2

AUTO START

ERROR

OMM 1

OMM 2

MACHINE START

ERROR

1-9

PROBE

STATUS

N/C

PROBE

STATUS

N/O

PROBE

STATUS

N/C

PROBE

STATUS

N/O

PROBE

STATUS

N/O

TERMINALS

14 & 15

see page 1-11

TERMINALS

23 & 24

see page 1-11

OPTION

SW3

Switch must be in

position shown.

Bleeper on/bleeper off.

Factory set to bleeper on.

Switch can be in either

position.

NOTE

All relay contacts return to an

open circuit condition when power

is removed from the MI 12.

SWITCH SW3

This switch enables normally open

and normally closed options to be

selected for skip and status.

The interface is factory set to option 1.

ERROR opens the relay contacts when

an error condition occurs.

IMPORTANT

Care must be taken to ensure

correct connections to terminals.

SKIP

N/C

PROBE

STATUS

N/C

SKIP

N/O

SKIP

N/C

SKIP

N/O

N/O Normally open.

N/C Normally closed.

1

2

3

4

5

ERROR closes the relay contacts

when an error condition occurs.

KEY

A B C D

1 2 3 4

A B C D

1 2 3 4

A B C D

1 2 3 4

A B C D

1 2 3 4

A B C D

1 2 3 4

1-10

FUSES

Part no.

Fuse 62 mA (FF) P-FS20-0062

Fuse 250 mA (FF) P-FS20-1A25

Fuse 500 mA (T) P-FS01-1A50

FS1 - 62 mA (FF) Spare.

FS2 - 62 mA (FF) Error.

FS3 - 62 mA (FF) Low battery.

FS4 - 62 mA (FF) Probe status N/C.

FS6 - 62 mA (FF) Probe status N/O.

FS5 - 250 mA (FF)

Audio extension protection.

FS7 - 500 mA (T)

Power supply protection.

TEST POINTS FOR

SIGNAL STRENGTH

T1 - OMM 2

Minimum receivable signal

approximately 0,36 V d.c.

Maximum signal strength output

approximately 7 V d.c.

T2 - OMM 1

Signal strength levels same as T1

(Also available on terminal 19).

T3 - 0 V reference.

FS7

FS5

FS2

FS3

FS4

FS6

FS1

T1

T2

T3

+24 V

0 V

E

Machine power

supply

CNC

machine

control

PSU3

power

supply unit

Cable overall

screened and insulated,

each core 7 strands

Ø0,2 mm. insulated.

Three low voltage wires

each 16 strands

Ø0,2 mm insulated

Machine

star

ground

point

Alternative

Note: 1. The supply 0 V and all 0 V signal reference terminals are isolated from case.

2. Grounding of the case and 0 V should be made to comply with all relevant

safety standards. Care should be taken to avoid ground coupled interference.

3. Please consult your Renishaw supplier for wiring details of special OMM-C.

SCREEN(S)

GREEN/YELLOW

OMM

1

OMM

2

OMM cable

supplied by Renishaw

Ø5,1 mm x 25 metres long

(Ø0,20 in x 82 ft long)

The interface can support two OMMs from terminals 1 - 9.

The audio extension (terminal 20) supports a remote audible indicator or lamp (not available from Renishaw),

usually located near the machine operator.

YELLOW

GREY

WHITE

GREEN

BROWN

GREEN

YELLOW

GREY

WHITE

Audible indicator

If machine power

supply is not used,

then maximum

voltage is +50 V.

Remote

audible indicator

or lamp

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

SIGNAL 1

START 1

0 V

10 V

0 V

SIGNAL 2

START 2

+24 V

0 V SUPPLY

GND

PROBE STATUS

SSR

LOW BATT

SSR

ERROR

SSR

19

20

21

22

23

24

PROBE STATUS

SSR

MACHINE START

1 ms - 150 ms

AUDIO EXTENSION

SIGNAL STRENGTH

OMM 1

+24 V

0 V

WIRING DIAGRAM

1-11

+ve

-ve

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Sommaire

SECURITE

Veiller à ce que la machine-outil ne

présente aucun danger et isoler du

secteur avant de déposer le couvercle.

Seules les personnes qualifiées sont

autorisées à ajuster les interrupteurs

ou remplacer les fusibles.

2-1

KIT DE MONTAGE DU MODULE D'INTERFACE MI 12 2-2

MODULE D'INTERFACE MI 12 ……… 2-4

MI 12 ET MI 12–B ………… 2-5

AFFICHAGE A LED DES DIAGNOSTICS … … 2-6

FORMES D'ONDES DE SORTIE MI 12 … … 2-7

INTERRUPTEUR SW2 ………… 2-8

INTERRUPTEUR SW3 ………… 2-9

FUSIBLES … …………2-10

POINTS DE TEST DE LA PUISSANCE DU SIGNAL … 2-10

SCHEMA DE CABLAGE …………2-11

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4-1

Indice

SICUREZZA

Prima di togliere i ripari, accertarsi che la

macchina utensile sia in condizione di

sicurezza e isolarla elettricamente.

La regolazione degli interruttori o la

sostituzione dei fusibili deve essere

effettuata solamente da persone qualificate.

KIT DI MONTAGGIO SU QUADRO DELL'INTERFACCIA MI 12 4-2

INTERFACCIA MI 12 … … … … … 4-4

MI 12 E MI 12–B … … … … … 4-5

LED – DISPLAY DIAGNOSTICO … … … … 4-6

FORME D'ONDA DELL'MI 12 … … … … 4-7

INTERRUTTORE SW2 … … … … … 4-8

INTERRUTTORE SW3 … … … … … 4-9

FUSIBILI …………… …4-10

PUNTI DI TEST INTENSITA' DI SEGNALE … … … 4-10

SCHEMA ELETTRICO … … … … … 4-11

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T +44 (0)1453 524524

F +44 (0)1453 524901

E [email protected]

www.renishaw.com

Renishaw plc

New Mills, Wotton-under-Edge,

Gloucestershire, GL12 8JR

United Kingdom

For worldwide contact details, please

visit our main website at

www.renishaw.com/contact

*H-2000-5073-05-J*

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