Renishaw OLP40 User manual

OLP40 optical lathe probe
Installation guide
H-5625-8504-05-A

Renishaw part no: H-5625-8504-05-A
First issued: 02.2009
Revised: 10.2019
© 2009-2019 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
Safety ........................................................................1.1
Safety ....................................................................1.1
OLP40 basics ................................................................2.1
Introduction ................................................................2.1
Getting started ...........................................................2.1
System interface..........................................................2.1
Trigger Logic™ ...........................................................2.2
Probe modes...............................................................2.2
Configurable settings.........................................................2.2
Switch-off methods........................................................2.2
Enhanced trigger filter .....................................................2.4
Optical transmission method ................................................2.4
Optical power ............................................................2.4
OLP40 dimensions ..........................................................2.5
OLP40 specification .........................................................2.6
Typical battery life.........................................................2.7
System installation ...........................................................3.1
Installing the OLP40 with OMM-2 receiver with OSI or OSI-D interface or
OMI-2 / OMI-2T / OMI-2H interface / receiver ......................................3.1
Operating envelope .......................................................3.1
Positioning the OMM-2 receiver with OSI or OSI-D interface or the
OMI-2 / OMI-2T / OMI-2H interface / receiver ...................................3.2
Preparing the OLP40 for use...................................................3.3
Fitting the stylus ..........................................................3.3
Stylus weak link ..........................................................3.4
Installing the batteries .....................................................3.5
Mounting the probe on a shank ..............................................3.6
Stylus on-centre adjustment.................................................3.7
Stylus trigger force and adjustment..............................................3.8

OLP40 installation guide
ii
Contents
Calibrating the OLP40........................................................3.9
Why calibrate a probe? ....................................................3.9
Calibrating in a bored hole or on a turned diameter...............................3.9
Calibrating in a ring gauge or on a datum sphere ................................3.9
Calibrating the probe length .................................................3.9
Trigger Logic™ ...............................................................4.1
Reviewing the probe settings ..................................................4.1
Probe settings record ........................................................4.2
Changing the probe settings ...................................................4.4
Master reset function.........................................................4.6
Operating mode.............................................................4.8
Maintenance .................................................................5.1
Maintenance ...............................................................5.1
Cleaning the probe ..........................................................5.1
Changing the batteries .......................................................5.2
OLP40 eyelid...............................................................5.4
Fault-finding .................................................................6.1
Parts list .....................................................................7.1
General information ..........................................................8.1
Disclaimer .................................................................8.1
Trade marks................................................................8.1
Warranty ..................................................................8.1
China RoHS ...............................................................8.1
Changes to equipment .......................................................8.1
CNC machines .............................................................8.1
Care of the probe ...........................................................8.1
Patents ...................................................................8.2
Microchip software licensing agreement ..........................................8.2
EU declaration of conformity ...................................................8.3
WEEE directive .............................................................8.3
REACH regulation ...........................................................8.3
FCC Information to user (USA only) .............................................8.3

1.1
Safety
Safety
Information to the user
The OLP40 is supplied with two non-rechargeable
½AA lithium-thionyl chloride batteries (see
page 5.2, “Changing the batteries”, for further
information). Lithium batteries must be approved
to BS EN 62133:2013 (IEC 62133:2012). Once
the charge in the batteries is depleted, do not
attempt to recharge them.
The use of this symbol on the batteries, packaging
or accompanying documents indicates that
used batteries should not be mixed with general
household waste. Dispose of the used batteries
at a designated collection point. This will prevent
potential negative effects on the environment and
human health which could otherwise arise from
inappropriate waste handling. Contact your local
authority or waste disposal service concerning the
separate collection and disposal of batteries. All
lithium and rechargeable batteries must be fully
discharged or protected from short circuiting prior
to disposal.
Ensure replacement batteries are of the correct
type and are fitted in accordance with the
instructions in this manual (see page 5.2,
“Changing the batteries” for further information),
and as indicated on the product. For specific
battery operating, safety and disposal guidelines,
refer to the battery manufacturer’s literature.
•Ensure that all batteries are inserted with the
correct polarity.
•Do not store batteries in direct sunlight or rain.
•Do not expose to heat or dispose of batteries
in a fire.
•Avoid forced discharge of the batteries.
•Do not short-circuit the batteries.
•Do not disassemble, pierce, deform or apply
excessive pressure to the batteries.
•Do not swallow the batteries.
•Keep the batteries out of the reach of children.
•Do not allow batteries to get wet.
•Do not mix new and used batteries or battery
types, as this will result in reduced life and
damage to the batteries.
•If a battery is damaged, exercise caution when
handling it.
Ensure that you comply with international and
national battery transport regulations when
transporting batteries or the products.
NOTE: Lithium batteries are classied as
dangerous goods and strict controls apply
to their shipment by air. To reduce the risk of
shipment delays, if you need to return the OLP40
to Renishaw for any reason, do not return any
batteries.
In all applications involving the use of machine
tools or CMMs, eye protection is recommended.
The OLP40 has a glass window. Handle with care
if broken to avoid injury.
Section 1, “Safety”

OLP40 installation guide
1.2
Safety
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 the equipment installer
All Renishaw equipment is designed to comply
with the relevant EU 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 (for example, power transformers, servo
drives);
•all 0V/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 (for example, motor power
supply cables), or be near high-speed data
lines;
•cable lengths should always be kept to a
minimum.
Equipment operation
If this equipment is used in a manner not specified
by the manufacturer, the protection provided by
the equipment may be impaired.
BS EN 62471:2008
(IEC62471:2006)
The photobiological
safety of lamps and lamp
systems.
Optical safety
This product contains LEDs that emit both visible
and invisible light.
OLP40 is ranked Risk Group: Exempt (safe by
design).
The product was evaluated and classified using
the following standard:
Renishaw recommends that you do not stare at or
look directly into any LED device, irrespective of
its risk classification.

2.1
Introduction
The OLP40 is an optical lathe probe suitable
for use on all sizes of lathes and small multi-
tasking machines. It is designed to resist optical
interference, false triggering and shock. It is
supplied with an enhanced window and metal
battery cassette.
The OLP40 can be operated in either ‘Modulated’
or ‘Legacy’ optical transmission modes (see
page4.1, “Reviewing the probe settings”, for
further information).
When operating in ‘Modulated’ mode, the OLP40
becomes compatible for use with an OMM-2 or
OMM-2C receiver with an OSI or OSI-D interface,
or with an OMI-2 / OMI-2T / OMI-2H / OMI-2C
receiver / interface, to provide substantially
increased resistance to light interference.
In ‘Modulated’ mode, it is possible to define the
probe ID. This is factory set to PROBE 1, but can
be changed to PROBE 2 for use with twin probes
or PROBE 3 for use with multiple probe systems.
In ‘Legacy’ mode, the OLP40 is compatible with
an OMM receiver and an MI 12 interface, or with
an OMI receiver / interface.
All OLP40 settings are configured using Trigger
Logic™. This technique enables the user to
review and subsequently change probe settings
by deflecting the stylus whilst observing the LED
display.
Configurable settings are:
•Switch-on / switch-off method
•Enhanced trigger filter setting
•Optical transmission method
•Optical power
Getting started
Three multicolour probe LEDs provide visual
indication of selected probe settings.
For example:
•Switch-on and switch-off methods
•Probe status – triggered or seated
•Battery condition
System interface
The interface conveys and processes signals
between the probe and CNC machine controller.
OMM-2 or OMM-2C receiver with OSI or OSI-D
interface or OMI-2 / OMI-2T / OMI-2H / OMI-2C
receiver / interface (modulated transmission)
The OMI-2T receiver / interface or OMM-2
receiver with OSI or OSI-D interfaces are the
recommended interfaces for use with the OLP40
as they provide substantially increased resistance
to light interference whilst providing the user
greater flexibility to operate a multiple probe
system.
OMI receiver / interface or OMM receiver with
MI 12 interface (legacy transmission)
Alternative interfaces are the OMI receiver /
interface or OMM receiver with the MI 12 interface.
OLP40 basics
Section 2, “OLP40 basics”

OLP40 installation guide
2.2
OLP40 basics
Trigger Logic™
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 deflections (triggering) to
systematically lead the user through the available
choices to allow selection of the required mode
options.
A Trigger Logic app is available that simplifies this
process with clear, interactive instructions and
informative videos and is available for download
on the App Store and Google Play.
or
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 (see
page4.1, “Reviewing the probe settings”, for
further information).
Probe modes
The OLP40 probe can be set in one of three
modes:
Standby mode – probe is waiting for a switch-on
signal.
Operational mode – when activated by one of
the switch-on methods described later in this
section. The probe is switched on and ready for
use.
Configuration mode – where Trigger Logic may
be used to configure the following probe settings.
NOTE: A visual indication of currently selected
probe settings is provided on battery insertion,
by the three multicolour LEDs located within the
probe window (see Section 4, “Trigger Logic™”).
Configurable settings
Switch-off methods
The following switch-off options are
user-configurable.
1. Optical on / Optical off
2. Optical on / Timer off

2.3
OLP40 basics
OLP40 switch-on method OLP40 switch-off method
Switch-off options are configurable
Switch-on time
Optical on
Optical switch-on is commanded by
machine input.
Optical off
Optical switch-off is commanded by
machine input. A timer automatically
switches the probe off 90minutes
after the last trigger if it is not
switched off by machine input.
Legacy (start filter off):
0.3 seconds
Legacy (start filter on):
0.8 seconds
Modulated:
0.3 seconds
Optical on
Optical switch-on is commanded by
machine input or auto start.
Timer off (timeout)
Timeout will occur 12, 33 or 134
seconds (user configurable) after the
last probe trigger or reseat.
NOTE: Issuing a further M-code
during the timeout period will also
reset the timer.

OLP40 installation guide
2.4
OLP40 basics
Enhanced trigger filter
Probes subjected to high levels of vibration or
shock loads may output probe trigger signals
without having contacted any surface. The
enhanced trigger filter improves the probe’s
resistance to these effects.
When the filter is enabled, a constant nominal
10ms delay is introduced to the probe output.
It may be necessary to reduce the probe
approach speed to allow for the increased stylus
overtravel during the extended time delay.
The enhanced trigger filter is factory set to OFF.
Optical transmission method
Probes subjected to particular forms of light
interference may accept spurious start signals.
The OLP40 can be operated in either ‘Modulated’
or ‘Legacy’ optical transmission mode.
Modulated mode
The OLP40 becomes compatible for use with
the OMM-2 or OMM-2C receiver with OSI or
OSI-D interface or with an OMI-2 / OMI-2T /
OMI-2H / OMI-2C receiver / interface to provide
substantially increased resistance to light
interference.
Modulated transmission in the OLP40, is capable
of providing three different coded start signals.
This allows the use of two probes with an OMI-2T
receiver / interface and up to three probes with
an OMM-2 receiver with a OSI or OSI-D interface
respectively.
Twin / multiple probe system
To operate in a twin or multiple probe system, one
probe must be set to PROBE 1 start and the other
probe must be set to PROBE2 start (OMI-2T or
OMM-2 with OSI or OSI-D) or PROBE3 start
(OMM-2 with OSI or OSI-D only). These settings
are user configurable.
In a twin probe system, such as a spindle probe
and an optical tool setting probe, the spindle
probe must be set to PROBE 1 start and the tool
setter to PROBE 2 start.
In a multiple probe system, with two spindle
probes and one optical tool setting probe, the
two spindle probes must be set to PROBE 1 and
PROBE 2 start, respectively, and the tool setter
must be set to PROBE 3 start.
Legacy mode
A start filter improves the probe’s resistance to
light interference.
When ‘Legacy’ (start filter on) is enabled, an
additional one second delay is introduced to the
probe activation (switch on) time.
It may be necessary to revise the probe program
software to allow for the increased activation time.
Optical power
Where the separation between the OLP40 and the
receiver is small, low optical power may be used.
In this setting, the optical transmission range
will be reduced, as shown on the performance
envelopes, so that battery life will be extended.
Low or ultra low optical power should be used
whenever possible for increased battery life.
Ultra low power is recommended for any
machine using the OMM-2C receiver or for use
in small machining centers where the maximum
separation distance between probe to receiver
is less than 1.5 m (4.9 ft), for further increased
battery life.
Dotted lines on the performance envelopes
represent the OLP40 in low and ultra low optical
power modes.
Maximum battery life is achieved when lithium-
thionyl chloride (LTC) batteries are used in
conjunction with ultra low power mode.
The probe is factory set to standard optical power.

2.5
OLP40 basics
OLP40 dimensions
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)
Dimensions given in mm (in)
50 (1.97) 19 (0.75)
12.5°
12.5°
58.3 (2.30)
Ø40 (1.57)
A range of probe-ready shanks
are available from Renishaw
Battery cassette
Window
M4 stylus
Transmit diode
Receive diode
Probe status LED

OLP40 installation guide
2.6
OLP40 basics
Principal application Workpiece inspection and job set-up on all sizes of lathes and
small multi-tasking machines.
Dimensions Length
Diameter
58.3mm (2.30 in)
40mm (1.57 in)
Weight (without shank) With batteries
Without batteries
277 g (9.77 oz)
258 g (9.10 oz)
Transmission type 360° infrared optical transmission (modulated or legacy)
Switch-on method Optical on
Switch-off methods Optical off or Timer off
Spindle speed (maximum) 1000 rev/min
Operating range Up to 5 m (16.4 ft)
Compatible receiver /
interface
Modulated
OMM-2 or OMM-2C with
OSI or OSI-D or with
OMI-2 / OMI-2T /
OMI-2H / OMI-2C
Legacy
OMI / OMM with MI 12
Sense directions ±X, ±Y, +Z
Unidirectional repeatability 1.00 µm (40 µin) 2s(see note 1)
Stylus trigger force
(see notes 2 and 3)
XY low force
XY high force
Z
0.40 N, 41 gf (1.44 ozf)
0.80 N, 80 gf (2.88 ozf)
5.30 N, 540 gf (19.06 ozf)
Stylus overtravel XY plane
+Z plane
±12.5°
6 mm (0.24 in)
Environment IP rating IPX8, BS EN 60529:1992+A2:2013
(IEC 60529:1989+A1:1999+A2:2013)
IK rating IK02(EN/IEC 62262: 2002) [for
glass window]
Storage temperature −25 °C to +70 °C (−13 °F to +158 °F)
Operating temperature +5 °C to +55 °C (+41 °F to +131 °F)
Battery types 2 × ½AA 3.6 V lithium-thionyl chloride (LTC)
Battery reserve life Approximately one week after a low battery warning is first given
(based on 5% usage).
Typical battery life See page 2.7
Note 1 Performance specification is tested at a standard test velocity of 480 mm/min (18.9 in/min) with a 50 mm stylus.
Significantly higher velocity is possible depending on application requirements.
Note 2 Trigger force, which is critical in some applications, is the force exerted on the component by the stylus when the
probe triggers. The maximum force applied will occur after the trigger point (overtravel). The force value depends
on related variables, including measuring speed and machine deceleration.
Note 3 These are the factory settings; manual adjustment is possible.
OLP40 specification

2.7
OLP40 basics
Typical battery life
Modulated transmission
2 × ½AA 3.6 V LTC batteries
(typical)
Standard power Low power Ultra low power
Standby life 600 days 1500 days 1500 days
Light usage 1% 460 days 1000 days 1200 days
Heavy usage 5% 220 days 480 days 600 days
Continuous use 480 hours 960 hours 1350 hours

OLP40 installation guide
2.8
OLP40 basics
This page is intentionally left blank.

3.1
Installing the OLP40 with OMM-2 receiver with OSI or OSI-D
interface or OMI-2 / OMI-2T / OMI-2H interface / receiver
Operating envelope
When used with the OMM-2 receiver with OSI or
OSI-D interface or the OMI-2 / OMI-2T / OMI-2H
interface / receiver, the OLP40 uses modulated
transmission.
Natural reflective surfaces within the machine may
increase the signal transmission range.
Coolant and swarf residue accumulating on the
probe or receiver/interface windows will have a
detrimental effect on transmission performance.
Wipe clean as often as necessary to maintain
unrestricted transmission.
WARNING: Ensure the machine tool is in a safe
condition and power is removed before removing
covers. Only qualied persons should adjust
switches.
CAUTION: If two or more systems are operating
in close proximity to each other, take care to
ensure that signals transmitted from the OLP40
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 OLP40 low
or ultra low optical power is used and that the low
range setting is used on the receiver.
System installation
Section 3, “System installation”
OLP40 probe
Workpiece
CNC machine
controller
OMI-2 / OMI-2T
or OMI-2H
OMM-2
CNC machine
controller
OSI or OSI-D
interface unit

OLP40 installation guide
3.2
System installation
Positioning the OMM-2 receiver with
OSI or OSI-D interface or the OMI-2 /
OMI-2T / OMI-2H interface / receiver
WARNING: Ensure the machine tool is in a safe
condition and power is removed before removing
covers. Only qualied persons should adjust
switches.
To assist in finding the optimum position for the
OMM-2 receiver with OSI or OSI-D interface or
the OMI-2 / OMI-2T / OMI-2H receiver / interface,
signal condition is indicated on a multicoloured
LED.
OLP40
OMM-2
OMI-2T
OMI-2H
OMI-2
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°
Switch-on / switch-off
Operating – standard power mode
Operating – low power mode
Operating – ultra low power mode
Typical plot at 20 °C (68 °F) 360° transmission around probe axis in m (ft)
Performance envelope when using the OLP40
with a OMM-2 receiver or OMI-2 / OMI-2T
or OMI-2H interface / receiver (modulated
transmission)
The diodes of the OLP40 and the OMM-2 receiver
/ OMI-2 / OMI-2T / OMI-2H interface / receiver
must be in each other’s field of view and within
the performance envelope shown. The OLP40
performance envelope is based on the optical
centre line of the OMM-2 / OMI-2 / OMI-2T /
OMI-2H being at 0° and vice versa.

1
2
3.3
System installation
Preparing the OLP40 for use
Fitting the stylus
M-5000-3707
1.8 Nm – 2.2 Nm
(1.3 lbf.ft – 1.6 lbf.ft)

2
1
OLP40 installation guide
3.4
System installation
Stylus weak link
NOTE: Steel styli must be used for optimum
metrology performance. Do not use a weak link
with ceramic or carbon bre styli.
Fitting a stylus with a weak link onto the
OLP40
In the event of excessive stylus overtravel, the
weak link is designed to break, thereby protecting
the probe from damage.
Take care to avoid stressing the weak link during
assembly.
Removing a broken weak link
5 mm A/F
2 Nm (1.7 lbf.ft)
1.8 Nm – 2.2 Nm
(1.3 lbf.ft – 1.6 lbf.ft)
12 mm
(0.47 in)

3.5
System installation
1
4
Installing the batteries
NOTES:
See page 5.2, “Changing the batteries”, for a list
of suitable battery types.
If dead batteries are inadvertently inserted, the
LEDs will remain a constant red.
Do not allow coolant or debris to enter the battery
compartment. When inserting batteries, check that
the battery polarity is correct.
After the batteries have been inserted, the LEDs
will display the current probe settings, for details,
(see page 4.1, “Reviewing the probe settings”,
for further information).
Please remove the
battery isolation device
from the battery
compartment before use.
2
3

OLP40 installation guide
3.6
System installation
Mounting the probe on a shank
× 4
1
2
2 mm A/F
× 4
0.5 Nm – 1.5 Nm
(0.4 lbf.ft – 1.1 lbf.ft)
2 mm A/F
× 2
× 2
2 mm A/F
× 2