Renishaw OMP40-2 User manual

OMP40-2 optical machine probe
Installation guide
H-4071-8504-03-A

Renishaw part no: H-4071-8504-03-A
Issued: February 2009
© 2009 Renishaw plc.All rights reserved.
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 plc.
The publication of material within this document
does not imply freedom from the patent rights of
Renishaw plc.

i
Contents
1.0 Before you begin
Disclaimer .................................................................................................................. 1.1
Trademarks ................................................................................................................ 1.1
Warranty..................................................................................................................... 1.1
Changes to equipment............................................................................................... 1.1
CNC machines........................................................................................................... 1.1
Care of the probe....................................................................................................... 1.1
Patents....................................................................................................................... 1.2
EC declaration of conformity........................................................................................... 1.3
FCC declaration (USA).................................................................................................... 1.3
Safety.............................................................................................................................. 1.4
2.0 OMP40-2 basics
Introduction...................................................................................................................... 2.1
Optical transmission method........................................................................................... 2.1
Trigger Logic™................................................................................................................ 2.2
Modes of operation.......................................................................................................... 2.3
Configurable settings....................................................................................................... 2.4
OMP40-2 dimensions...................................................................................................... 2.5
OMP40-2 specification.................................................................................................... 2.6
Principal application................................................................................................... 2.6
Overall dimensions..................................................................................................... 2.6
Weight........................................................................................................................ 2.6
Operating ................................................................................................................... 2.6
Batteries..................................................................................................................... 2.7
Environment............................................................................................................... 2.7
Contents

OMP40-2 installation guide
ii
Contents
3.0 System installation
Installing the OMP40-2 with an OMI-2/OMI-2T/OMI-2H/OMI .................................... 3.1
Performance envelope with an OMI-2/OMI-2T/OMI-2H............................................. 3.2
Performance envelope with an OMI........................................................................... 3.3
Installing the OMP40-2 with an OMM and MI12 ........................................................ 3.4
Performance envelope with an OMM......................................................................... 3.5
Preparing the OMP40-2 for use................................................................................. 3.6
Fitting the stylus.................................................................................................... 3.6
Installing the batteries........................................................................................... 3.7
Mounting the probe on a shank............................................................................. 3.8
Stylus on-centre adjustment.................................................................................. 3.9
Calibrating the OMP40-2.......................................................................................... 3.10
4.0 Trigger Logic™
Reviewing the current probe settings......................................................................... 4.1
Probe settings record table........................................................................................ 4.2
Changing the probe settings...................................................................................... 4.3
Operating mode ......................................................................................................... 4.4
5.0 Maintenance
Maintenance .............................................................................................................. 5.1
Cleaning the probe .................................................................................................... 5.1
Changing the batteries............................................................................................... 5.2
Battery types.............................................................................................................. 5.3
6.0 Fault finding
Fault finding................................................................................................................ 6.1
7.0 Parts list
Parts list ..................................................................................................................... 7.1

1.1
Disclaimer
RENISHAW HAS MADE CONSIDERABLE
EFFORTS TO ENSURE THE CONTENT OF THIS
DOCUMENT IS CORRECT AT THE DATE OF
PUBLICATION BUT MAKES NO WARRANTIES
OR REPRESENTATIONS REGARDING
THE CONTENT. RENISHAW EXCLUDES
LIABILITY, HOWSOEVER ARISING, FOR ANY
INACCURACIES IN THIS DOCUMENT.
Trademarks
RENISHAW® and the probe emblem used in the
RENISHAW logo are registered trademarks of
Renishaw plc in the UK and other countries.
apply innovation™ andTrigger Logic™ are
trademarks of Renishaw plc.
All other brand names and product names used
in this document are trade names, service marks,
trademarks, or registered trademarks of their
respective owners.
Warranty
Equipment requiring attention under warranty
must be returned to your equipment supplier.
No claims will be considered where Renishaw
equipment has been misused, or where
repairs or adjustments have been attempted by
unauthorised persons. Prior consent must be
obtained in instances where Renishaw equipment
is to be substituted or omitted. Failure to comply
with this requirement will invalidate the warranty.
Before you begin
Changes to equipment
Renishaw reserves the right to change equipment
specifications without notice.
CNC machines
CNC machine tools must always be operated by
fully trained personnel in accordance with the
manufacturer's instructions.
Care of the probe
Keep system components clean and treat the
probe as a precision tool.

OMP40-2 installation guide
1.2
Before you begin
EP 0390342
EP 0695926
EP 0974208
EP 1130557
EP 1185838
EP 1373995
EP 1397637
EP 1425550
EP 1477767
EP 1477768
EP 1503524 B
EP 1701234
EP 1734426
EP 1804020
JP 2945709
JP 2994401
JP 3967592
JP 2003-526170
JP 2004-522961
JP 2004-530234
JP 2005-502035
JP 2006-313567
US 5040931
US 5150529
US 5669151
US 6776344 B2
US 6839563 B1
US 6860026 B2
US 6941671 B2
US 6472981 B2
US 7145468 B2
Patents
Features of the OMP40-2 probe, and other similar
Renishaw probes, are the subject of one or more
of the following patents and/or patent applications:

1.3
Before you begin
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 may 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.
C
EC DECLARATION OF
CONFORMITY
Renishaw plc declares that the product:-
Name
Description
OMP40-2
Optical machine probe
has been manufactured in conformity with the
following standards:-
BS EN 61326-1:2006
BS EN 60825-12:2004
Electrical equipment
for measurement,
control and
laboratory use - EMC
requirements -
Part 1: General
requirements
Immunity to Table 2
- industrial locations.
Emissions to Class A
- industrial locations.
Safety of laser
products -
Part 12: Safety of
free space optical
communication
systems used for
transmission of
information
and that it complies with the requirements of
the following directives: -
2004/108/EC
2006/95/EC
Electromagnetic
compatibility
Low voltage
The above information is summarised from the
full EC Declaration of Conformity.A copy is
available from Renishaw on request.

Safety
Information to the user
Handle and dispose of batteries in accordance
with the manufacturer's recommendations.Use
only the recommended batteries. Do not allow the
battery terminals to contact other metallic objects.
Take care not to short the battery contacts as
this may be a fire hazard. Ensure that the contact
strips are located securely.
The OMP40-2 has a glass window, handle with
care if broken, to avoid injury.
Information to the machine supplier/
installer
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 literature, 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 halt the movement of
the machine.
Information to equipment installer
All Renishaw equipment is designed to comply
with the relevant EEC and FCC regulatory
requirements.It is the responsibility of the
equipment installer to ensure that the following
guidelines are adhered to, in order for the product
to function in accordance with these regulations:
• any interface MUST be installed in a position
away from any potential sources of electrical
noise, i.e. power transformers, servo drives
etc;
• all 0V/ground connections should be
connected to the machine 'star point' (the
'star point' is a single point return for all
equipment ground and screen cables).
This is very important and failure to adhere
to this can cause a potential difference
between grounds;
• all screens must be connected as outlined
in the user instructions;
• cables must not be routed alongside high
current sources, i.e. motor power supply
cables etc, or be near high speed data lines;
• cable lengths should always be kept to a
minimum.
OMP40-2 installation guide
1.4
Before you begin

2.12.1
OMP40-2 basics
Introduction
Welcome to the OMP40-2 job set-up and
inspection probe, an upgrade of the multiple
award winning OMP40. At only 40 mm diameter,
this compact probe sets industry standards for
functionality, reliability and robustness in the
harshest of machine tool environments.
The OMP40-2 is ideal for small to medium
machining centres including the growing range of
HSK machines.
• The OMP40 uses legacy transmission
only, whereas the OMP40-2 can use either
modulated or legacy transmission modes.
• full compatibility with Renishaw's industry
proven optical transmission systems.
• 360° optical 'switch-on' facility allows probe
to be switched off in any position.
Optical transmission method
The OMP40-2 can be operated in either
modulated or legacy mode.
Modulated mode
Certain forms of light interference can cause
false triggers or mimic a start signal and falsely
activate the probe.These effects are much
reduced when modulated transmission is
selected.
When set to modulated mode, the probe will
only function with one of the following modulated
receivers:OMI-2T, OMI-2 OMI-2H or OMI-2C.
Modulated transmission is capable of providing
two different coded start signals.This allows the
use of two probes with one interface.Twin probe
installations require an OMI-2T interface.
Legacy mode
When set to legacy mode, the probe will only
function with an OMI or OMM/MI12.

OMP40-2 installation guide
2.2
OMP40-2 basics
Trigger Logic™
All OMP40-2 settings are configured using the
Trigger Logic™ technique.
Trigger Logic™ (see Section 4 - Trigger Logic™)
is a method that allows the user to view and
select all available mode settings in order to
customise a probe to suit a specific application.
Trigger Logic™ is activated by battery insertion
and uses a sequence of stylus deflection
(triggering) to systematically lead the user
through the available choices to allow selection of
the required mode options.
Current probe settings can be reviewed by
simply removing the batteries for a minimum of
5 seconds, and then replacing them to activate
the Trigger Logic™ review sequence.

2.3
OMP40-2 basics
Modes of operation
The OMP40-2 can be in one of three modes:
Standby mode:where the probe is awaiting a
switch-on signal:
Operational mode: where the probe has been
activated:
Configuration mode: whereTrigger Logic™ may
be used to configure probe settings.
NOTE:
A visual indication of currently selected probe
settings is provided on battery insertion, by the
three multi-colour LEDs located within the probe
window (see Section 4 -Trigger Logic™).
NOTE:
Ensure that the probe does not remain active in
the tool changer when optical on/time out option
is selected by observing the LEDs.
Probe switch-on Probe switch-off
Optical switch-on
(When commanded by an
M code or machine output).
Optical off
(When commanded by an M code or machine output).
A timer automatically switches the probe off after 90 minutes from
the last trigger if not turned off by an M code or machine output.
Note:
This method is required when operating a twin probe system
with an OMI-2T.
After being switched on, the OMP40-2 must be on for 1 second
minimum before being switched off.
Timer off (time out)
Time out will occur (12, 33 or 134 seconds) after the last probe
trigger or reseat.
Optical switch-on
(When commanded by
Auto start).
Timer off (time out)
Time out will occur (12, 33 or 134 seconds) after the last probe
trigger or reseat.

OMP40-2 installation guide
2.4
OMP40-2 basics
Configurable settings
See pages 4.1/4.3
Optical switch-off
See table page 2.3
Enhanced trigger filter
Probes subjected to high levels of vibration or
shock loads may output signals without having
contacted any surface.The Enhanced trigger filter
improves the probes resistance to these effects.
When the filter is enabled, a constant 10 ms delay
is introduced to the probe output.
The OMP40-2 is factory set to trigger filter off.
NOTE:
It may be necessary to reduce the probe
approach speed to allow for the increased stylus
overtravel during the extended time delay.
Transmission method/probe
identification
Legacy start filter off/on
If false start problems are experienced in
Legacy mode, activate the Legacy start filter
on option.This introduces a 1 second delay
to the probe switch on time and improves the
probes resistance to false starts caused by light
interference.
Modulated Probe 1/Probe 2
To operate a twin probe system, one probe
needs to be set to Probe 1 start and the other
set to Probe 2 start, these settings are user
configurable.
In a twin probe system such as a spindle probe
and an optical tool setting probe, the spindle
probe would be set to Probe 1 start and the tool
setter would be set to Probe 2 start.
For most applications the spindle probe
should be set to Probe 1 start. However where
the application uses two spindle probes the
secondary spindle probe is set to Probe 2.
Optical power
Where the separation between the OMP40-2 and
the receiver is small (no more than 2 metres), the
low optical power setting may be selected, see
pages 3.2/3.3/3.5 and 4.3.This setting will reduce
the optical transmission range and extend battery
life.
The OMP40-2 is factory set to standard Optical
power.

2.5
OMP40-2 basics
UK


Stylus overtravel limits
Stylus length ±X/±Y +Z
50 (1.97) 12 (0.47) 6 (0.24)
100 (3.94) 22 (0.87) 6 (0.24)
OMP40-2 dimensions
12.5°
12.5°
19 (0.75)
50 (1.97)
50 (1.97)
±X/±Y
+Z
Probe status LEDs
Battery cassette
dimension given in mm (in)
Ø40 (Ø1.57)
M4 stylus

OMP40-2 installation guide
2.6
OMP40-2 basics
OMP40-2 specification
Principal application: Workpiece measurement and job set-up on small to medium
machining centres
Overall dimensions: Length 50 mm (1.97 in)
Diameter 40 mm (1.57 in)
Weight: with batteries
260 g (9.17 oz) without batteries 240 g (8.46 oz)
Operating:
Signal transmission type: 360° infra-red optical transmission (modulated or legacy)
Switch-on method: Optical on or Auto Start
Switch-off method: Optical off or Timer
Operating range: Up to 5 m (16.4 ft)
Receiver/interface: OMI-2T, OMI-2, OMI-2H, OMI-2C, OMI or OMM/MI12
Sense directions: Omni-directional ±X, ±Y, +Z
Uni-directional repeatability: 1.0 µm (0.00004 in) 2 sigma (2σ) *
Stylus trigger force (factory set):
low force direction XY plane
0.5 N, 50 gf (1.76 ozf) §+Z direction
5.85 N, 585 gf (20.63 ozf) §
high force direction XY plane
0.9 N, 90 gf (3.17 ozf) §
+Z direction
5.85 N, 585 gf (20.63 ozf) §
Stylus overtravel: XY plane
±12.5° +Z direction 6 mm (0.24 in)
*Probe performance specification is for a test velocity of 480 mm/min (1.57 ft/min)
using a 50 mm (1.97 in) straight stylus.
§ Factory set using 50 mm (1.97 in) straight stylus.

2.7
OMP40-2 basics
Typical battery life
MODULATED optical transmission mode
Standby life 5% usage (72 minutes/day) Continuous use
Standard
power mode Low power mode Standard power mode Low power mode
250 days 85 days 120 days 140 hours 230 hours
LEGACY optical transmission mode
Standby life 5% usage (72 minutes/day) Continuous use
Standard
power mode Low power mode Standard power mode Low power mode
250 days 115 days 170 days 170 hours 270 hours
OMP40-2 specification
Batteries:
Battery type: ½ AA Lithium Thionyl Chloride (3.6 V) x 2
Battery reserve life: Approximately 1 week after a low battery
warning is first given
Low battery indication: Blue flashing LED in conjunction with normal
red or green probe status LED
Dead battery indication: Constant or flashing red
Environment:
IP rating: IPX8
Operating temperature: 5 °C to 50 °C (41 °F to 122 °F)
Storage temperature: -10 °C to 70 °C (14 °F to 158 °F)

OMP40-2 installation guide
2.8
OMP40-2 basics
This page left intentionally blank

3.1
System installation
Installing the OMP40-2 with an
OMI-2/OMI-2T/OMI-2H/OMI
CNC machining centre spindle
Mounting bracket
OMI-2/OMI-2T/OMI-2H/OMI
PSU3 power supply
(optional)
CNC
machine
control
Tool setting probe, only with OMI-2T/OMI-2H
Workpiece
Cable
Renishaw publications:
OMI-2 user's guide H-2000-5233
OMI-2T user's guide H-2000-5439
OMI user's guide H-2000-5062
PSU3 user's guide H-2000-5057
Stylus
OMP40-2
inspection
probe
Probe and optical receiver
The probe and receiver must be in the other's
field of view, and within the performance
envelope shown (pages 3.2/3.3).The OMP40-2
performance envelope is based on the receiver
being at 0°, and vice-versa.
Natural reflective surfaces within the machine
may increase the signal transmission range.
Coolant residue accumulating on the OMP40-2
or OMI-2T/OMI-2/OMI-2H/OMI windows may
reduce the signal transmission range.Wipe clean
as often as is necessary to maintain unrestricted
transmission.
Operation in temperatures of 0 °C to 5 °C or
50 °C to 60 °C (32 °F to 41 °F or 122 °F to
140 °F) will result in some reduction in range.

OMP40-2 installation guide
3.2
System installation
Performance envelope with
an OMI-2/OMI-2T/OMI-2H
(modulated transmission)
OMP40-2 OMI-2/
OMI-2T/
OMI-2H
0°
Optical
centre line
60°
45°
45°
15°
30°
30°
15°
60°
0°
60°
45°
45°
15°
30°
30°
15°
60°
75°
4 (13.1)
3 (9.8)
2 (6.5)
1 (3.3)
5 (16.4)
4 (13.1)
3 (9.8)
2 (6.5)
1 (3.3)
5 (16.4)
75°
75°
75°
Range m (ft)
Switch on/off
Operating - standard power mode
Operating - low power mode
Typical plot at 20 °C (68 °F)
360° transmission around
probe axis in metres (feet)
Optical power setting
If two machines are operating in close proximity
to each other, take care to ensure that signals
transmitted from a probe on one machine are not
received by the receiver on the other machine,
and vice versa.
When this is the case, it is recommended that the
low optical power setting on probes is used, and
that the low range setting is used on the receiver.
Receiver position
To assist finding the optimum position for the
installation, signal condition is displayed on the
OMI-2/OMI-2T/OMI-2H receiver.
Please refer to the receiver User’s Guide.

3.3
System installation
Performance envelope with an
OMI (legacy transmission)
OMP40-2
OMI
0°
60°
45°
45°
15°
30°
30°
15°
60°
0°
60°
45°
45°
15°
30°
30°
15°
60°
75°
4 (13.1)
3 (9.8)
2 (6.5)
1 (3.3)
5 (16.4)
4 (13.1)
3 (9.8)
2 (6.5)
1 (3.3)
5 (16.4)
75°
75°
75°
Range m (ft)
Switch on/off
Operating - standard power mode
Operating - low power mode
Typical plot at 20 °C (68 °F)
360° transmission around
probe axis in metres (feet)
Optical
centre line
Optical power setting
If two machines are operating in close proximity
to each other, take care to ensure that signals
transmitted from a probe on one machine are not
received by the receiver on the other machine,
and vice versa.
When this is the case, it is recommended that the
low optical power setting on probes is used, and
that the low range setting is used on the receiver.
Receiver position
To assist finding the optimum position for the
installation, signal condition is displayed on the
OMI receiver.
Please refer to the receiver User’s Guide.

OMP40-2 installation guide
3.4
System installation


MI12

CNC machining centre spindle
CNC
machine
control
Mounting bracket
Cable
Workpiece
OMM
Installing the OMP40-2 with an
OMM and MI12
Renishaw publications:
OMM user's guide H-2000-5044
MI12 user's guide H-2000-5073
PSU3 user's guide H-2000-5057
Stylus
PSU3 power supply
(optional)
MI12 interface
OMP40-2
inspection
probe
Probe and optical receiver
The probe and receiver must be in the other's
field of view, and within the performance envelope
shown (page 3.5).The OMP40-2 performance
envelope is based on the receiver being at 0°,
and vice-versa.
Natural reflective surfaces within the machine
may increase the signal transmission range.
Coolant residue accumulating on the OMP40-2
or OMM windows may reduce the signal
transmission range.Wipe clean as often as is
necessary to maintain unrestricted transmission.
Operation in temperatures of 0 °C to 5 °C or
50 °C to 60 °C (32 °F to 41 °F or 122 °F to
140 °F) will result in some reduction in range.
On large machine tools, it is possible to provide
greater reception coverage by mounting two
OMMs connected to a single MI12 interface.