RENISHAW OMP40-2 Optical Machine Probe Installation Guide

OMP40-2 optical machine probe
Installation guide

OMP40-2 Optical Machine Probe

Compliance information for this product is available by scanning the QR code or visiting www.renishaw.com/mtpdoc

Before you begin

Trade marks
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Warranty
Unless you and Renishaw have agreed and signed a separate written agreement, the equipment and/or software are sold subject to the Renishaw Standard Terms and Conditions supplied with such equipment and/or software, or available on request from your local Renishaw office.
Renishaw warrants its equipment and software for a limited period (as set out in the Standard Terms and Conditions), provided that they are installed and used exactly as defined in associated Renishaw documentation. You should consult these Standard Terms and Conditions to find out the full details of your warranty .
Equipment and/or software purchased by you from a third-party supplier is subject to separate terms and conditions supplied with such equipment and/or software . You should contact your third-party supplier for details .
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 unit as a precision tool .

Patents
Features of the OMP40-2 probe and other similar Renishaw products, are the subject of one or more of the following patents and/or patent applications:
EP 1457786
US 7285935

US government notice
NOTICE TO UNITED STATES GOVERNMENT CONTRACT AND PRIME CONTRACT CUSTOMERS
This software is commercial computer software that has been developed by Renishaw exclusively at private expense . Notwithstanding any other lease or licence agreement that may pertain to, or accompany the delivery of, this computer software, the rights of the United States Government and/or its prime contractors regarding its use, reproduction and disclosure are as set forth in the terms of the contract or subcontract between Renishaw and the United States Government, civilian federal agency or prime contractor respectively . Please consult the applicable contract or subcontract and the software licence incorporated therein, if applicable, to determine your exact rights regarding use, reproduction and/or disclosure .
Renishaw software EULA
Renishaw software is licensed in accordance with the Renishaw licence at: www.renishaw.com/legal/softwareterms

OMP40-2 software licensing agreement
This OMP40-2 product includes the following third-party software:

BSD 3-Clause Licence
This product’s firmware has been developed by Renishaw with the use of the Microchip libraries, under the following licensing terms:-
This software is developed by Microchip Technology Inc . and its subsidiaries (“Microchip”) .
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer .
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution .
3. Microchip’s name may not be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY MICROCHIP “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PURPOSE ARE DISCLAIMED . IN NO EVENT SHALL MICROCHIP BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING BUT NOT LIMITED TO PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA OR PROFITS; OR BUSINESS INTERRUPTION) HOWSOEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE .
(c) Copyright 1999-2013 Microchip Technology, All rights reserved

Intended use
The OMP40-2 is an optical spindle probe that enables automated workpiece inspection and job set-up on multi-tasking machines and machining centres .

Safety

Information to the user
This product is supplied with non-rechargeable lithium metal batteries . Refer to the battery manufacturer’s literature for specific battery operating, safety and disposal guidelines.

• Do not attempt to recharge the batteries .
• Replace the batteries only with the specified type.
• Do not mix new and used batteries in the product .
• Do not mix different types or brands of batteries in the product .
• Ensure that all batteries are inserted with the correct polarity in accordance with the instructions in this manual and indicated on the product .
• Do not store the batteries in direct sunlight .
• Do not expose the batteries to water .
• Do not expose the batteries to heat or dispose of the batteries in a fire.
• Avoid forced discharge of the batteries .
• Do not short circuit the batteries .
• Do not disassemble, apply excessive pressure, pierce, deform or subject the batteries to impact
• Do not swallow the batteries
• Keep the batteries out of the reach of children .
• If the batteries are swollen or damaged do not use them in the product and exercise caution when handling them .
• Dispose of waste batteries in accordance with your local environmental and safety laws .

Ensure that you comply with international and national battery transport regulations when transporting the batteries or this product with the batteries inserted. Lithium metal batteries are classified as dangerous goods for transportation and require labelling and packaging in accordance with the dangerous goods regulations before being offered for transportation . To reduce the risk of shipment delays, should you need to return this product to Renishaw for any reason, do not return any batteries .
In all applications involving the use of machine tools, eye protection is recommended .
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 .
If the probe system fails, 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 UK, 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 .
Optical safety
This product contains LEDs that emit both visible and invisible light .
OMP40-2 is ranked Risk Group: Exempt (safe by design) .
The product was evaluated and classified using the following standard:
BS EN 62471:2008 The photobiological safety of lamps and lamp systems .
Renishaw recommends that you do not stare at or look directly into any LED device, irrespective of its risk classification.

OMP40-2 basics

Introduction
The OMP40-2 is an optical machine tool probe suitable for use on small to medium machining and small multi-tasking centres . It is designed to resist optical interference, false triggering and shock .
The OMP40-2 can be operated in either ‘Modulated’ or ‘Legacy’ optical transmission modes (for more information, see page 4-1, “Reviewing the probe settings”) .
When operating in ‘Modulated’ mode, the OMP40-2 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 OMP40-2 is compatible with an OMM receiver and an MI 12 interface, or with an OMI receiver / interface .
All OMP40-2 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-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-off method
• 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 OMP40-2 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 .

Trigger Logic™
Trigger Logic™ (for more information, see page 4-1, “Reviewing the probe settings”) 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 Probe setup 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 .

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 (for more information, see page 4-1, “Reviewing the probe settings”) .

Probe modes
The OMP40-2 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 off
2. Timer off

OMP40-2 switch-on method| OMP40-2 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.

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 OMP40-2 can be operated in either ‘Modulated’ or ‘Legacy’ optical transmission mode .
Modulated mode
The OMP40-2 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 OMP40-2, 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 OMP40-2 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 .
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 .
Low or ultra low optical power should be used whenever possible for increased battery life .
Dotted lines on the performance envelopes represent the OMP40-2 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 .

OMP40-2 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)

OMP40-2 specification

Principal application| Workpiece inspection and job set-up on small to medium machining centres and small multi-tasking machines
---|---
Dimensions| Length
Diameter (maximum)| 50 mm (1.97 in)
40 mm (1.57 in)
Weight (without shank)| With batteries Without batteries| 250 g (8.82 oz)
234 g (8.25 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 r/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 1
Stylus trigger force 2 3
XY low force XY high force Z| 0.50 N, 51 gf (1.80 oz)
0.90 N, 92 gf (3.24 oz)
5.85 N, 597 gf (21.04 oz)
Stylus overtravel| XY plane +Z plane| ±12.5° 6 mm (0.24 in)
Environment| IP rating| IPX8, BS EN 60529:1992+A2:2013
IK rating (OMP40-2 and OMP40-2LS) (typical)| IK01 BS EN IEC 62262: 2002 [for glass window]
IK rating (OMP40M) (typical)| IK02 BS 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)

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 .
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 .
3. These are the factory settings; manual adjustment is not possible .

Battery reserve life| Approximately one week after a low battery warning is first given (based on 5% usage)
---|---
Typical battery life| See the table on page 2-8

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

System installation

Installing the OMP40-2 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 OMP40-2 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 qualified 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 OMP40-2 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 OMP40-2 low or ultra low optical power is used and that the low range setting is used on the receiver .
Positioning the OMM-2 receiver with OSI or OSI-D interface or 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 qualified 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 .
Performance envelope when using the OMP40-2 with a OMM-2 receiver or OMI-2 / OMI-2T or OMI-2H interface / receiver (modulated transmission)
The diodes of the OMP40-2 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 OMP40-2 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 .

Typical plot at +20 °C (+68 °F) Transmission range in m (ft)

Installing the OMP40-2 with a OMM-2C receiver with OSI or OSI-D interface

Operating envelope
When used with a OMM-2C receiver with OSI or OSI-D interface, the OMP40-2 uses modulated transmission .
Natural reflective surfaces within the machine may increase the signal transmission range.
For best system performance, ensure that the OMM-2C receiver with OSI or OSI-D interface is mounted in a position which is not directly in front of a light source .
Coolant and swarf residue accumulating on the probe, interface or receiver windows will have a detrimental effect on transmission performance . Wipe clean as often as is necessary to maintain unrestricted transmission .
WARNING: Ensure the machine tool is in a safe condition and power is removed before removing covers . Only qualified persons should adjust switches.

CAUTION: If two systems are operating in close proximity to each other, take care to ensure that the signals transmitted from the OMP40-2 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 OMP40-2 ultra low power setting is selected .
Positioning the OMM-2C receiver with OSI or OSI-D interface
WARNING: Ensure the machine tool is in a safe condition and power is removed before removing covers . Only qualified persons should adjust switches.
The OMM-2C receiver with OSI or OSI-D interface should be mounted as near to the machine spindle as possible .
When mounting the OMM-2C receiver, it is important that the sealing ring forms a tight seal around the rim of the bore into which the body of the OMM-2C receiver is to be located .
Performance envelope when using the OMP40-2 with a OMM-2C receiver with OSI or OSI-D interface (modulated transmission).
The diodes of the OMP40-2 and the OMM-2C receiver with OSI or OSI-D interface must be in each other’s field of view and within the performance envelope shown. The OMP40-2 performance envelope is based on the optical centre line of the OMM-2C receiver with OSI or OSI-D interface being at 0° and vice versa .

Typical plot at +20 °C (+68 °F) Transmission range in m (ft)
3-4 OMP40-2 optical machine probe: System installation

Preparing the OMP40-2 for use
Fitting the stylus

Stylus weak link
NOTE: Must be used with steel styli . For optimum metrology performance do not use a weak link with ceramic or carbon fibre styli.
Fitting a stylus with a weak link onto the OMP40-2
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 .

Installing the batteries
NOTES:
See Section 5, “Maintenance”, for a list of suitable battery types .
If dead batteries are inadvertently inserted, the LED 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 LED will display the current probe settings (see page 4-1,“Reviewing the probe settings”, for further information) .

CAUTION: Remove the battery isolation device from the battery compartment before use .
*Take care not to short the battery contacts as this may be a fire hazard. Ensure the contact strips are located securely .

Mounting the probe on a shank

Stylus on-centre adjustment
NOTES:
If a probe and shank assembly is dropped, it must be rechecked for correct on- centre adjustment .
Do not hit or tap the probe to achieve on-centre adjustment .

Calibrating the OMP40-2

Why calibrate a probe?
A spindle probe is just one component of the measurement system which communicates with the machine tool . Each part of the system can introduce a constant difference between the position that the stylus touches and the position that is reported to the machine . If the probe is not calibrated, this difference will appear as an inaccuracy in the measurement . Calibration of the probe allows the probing software to compensate for this difference .
During normal use, the difference between the touch position and the reported position does not change, but it is important that the probe is calibrated in the following circumstances:

• when a probe system is to be used for the first time;
• when the enhanced trigger filter delay is changed;
• when a new stylus is fitted to the probe;
• when it is suspected that the stylus has become distorted or that the probe has been crashed;
• at regular intervals to compensate for mechanical changes of your machine tool;
• if repeatability of relocation of the probe shank is poor . In this case, the probe may need to be recalibrated each time it is selected .

It is good practice to set the tip of the stylus on-centre, because this reduces the effect of any variation in spindle and tool orientation (see page 3-9, “Stylus on-centre adjustment”, for further information) .
A small amount of run-out is acceptable, and can be compensated for as part of the normal calibration process .
Three different operations are to be used when calibrating a probe . They are:

• calibrating either in a bored hole or on a turned diameter of known position;
• calibrating either in a ring gauge or on a datum sphere;
• calibrating the probe length .

Calibrating in a bored hole or on a turned diameter
Calibrating a probe, either in a bored hole or on a turned diameter of known size, automatically stores values for the offset of the stylus ball to the spindle centre line . The stored values are then used automatically in the measuring cycles . Measured values are compensated by these values so that they are relative to the true spindle centre line .

Calibrating in a ring gauge or on a datum sphere
Calibrating a probe either in a ring gauge or on a datum sphere with a known diameter automatically stores one or more value for the radius of the stylus ball . The stored values are then used automatically by the measuring cycles to give the true size of the feature . The values are also used to give true positions of single surface features .

NOTE: The stored radius values are based on the true electronic trigger points . These values are different from the physical sizes .
Calibrating the probe length
Calibrating a probe on a known reference surface determines the length of the probe, based on the electronic trigger point . The stored value for length is different from the physical length of the probe assembly. Additionally, the operation can automatically compensate for machine and fixture height errors by adjusting the probe length value that is stored .

Trigger Logic™

Reviewing the probe settings

Probe settings record
This page is provided to note your probe’s settings .

tick

Factory settings are for kit A-4071-2001 only.

Changing the probe settings
Insert the batteries or, if they have already been installed, remove them for five seconds and then refit them.
Following the LED check, immediately deflect the stylus and hold it deflected until eight red flashes have been observed (if the battery power is low, each red flash will be followed by a blue flash).
Keep the stylus deflected until the “Switch-off method” setting is displayed, then release it .
CAUTION: Do not remove the batteries whilst in configuration mode. To exit, leave the stylus untouched for more than 20 seconds .

Master reset function
OMP40-2 features a master reset function to assist users who have mistakenly changed the probe settings into an unintended state .
The application of the master reset function will clear all current probe settings and return the probe to default settings .
The default settings are as follows:

• Optical switch-on
• Optical switch-off
• Enhanced trigger filter off
• Modulated PROBE 1
• Standard optical power

The default settings may not be representative of the required probe settings. Further configuration of OMP40-2 may subsequently be necessary to achieve the required probe settings .

To reset the probe

1. Insert the batteries or, if they have already been installed, remove them for 5 seconds and then refit them.
   Following the LED check, immediately deflect the stylus and hold it deflected until eight red flashes have been observed (if the battery power is low, each red flash will be followed by a blue flash).
   Keep the stylus deflected until the “Switch-off method” setting is displayed, then release it .

2. Hold the stylus deflected for 20 seconds. After this the status LEDs will proceed to flash yellow eight times. A confirmation for master reset is required, if nothing is done the probe will timeout.
   To confirm that a master reset is required, release the stylus and then hold the stylus deflected again until the eight yellow flash sequence has ended. This action will clear all probe settings and return the probe to default settings . Following an LED check the OMP40-2 will then go back into Trigger Logic and will display “Switch-off method” .

3. Further configuration using Trigger Logic may be necessary to achieve the required probe settings.

Operating mode

Probe status LED

Flashing red| Probe triggered in operating mode|
Flashing green and blue| Probe seated in operating mode – low battery|

Flashing red and blue| Probe triggered in operating mode – low battery|

Constant red| Battery dead|

Flashing red
or
Flashing red and green
or
Sequence when batteries are inserted| **** Unsuitable battery|

NOTE: Due to the nature of lithium-thionyl chloride batteries, if a “low battery” LED warning is ignored, it is possible for the following sequence of events to occur:

1. When the probe is active, the batteries discharge until battery power becomes too low for the probe to operate correctly .
2. The probe stops functioning, then reactivates as the batteries recover sufficiently to provide the probe with power .
3. The probe begins to run through the LED review sequence (see page 4-1, “Reviewing the probe settings”, for further information) .
4. Again, the batteries discharge and the probe ceases to function .
5. Again, the batteries recover sufficiently to provide the probe with power, and the sequence repeats itself .

Maintenance

Maintenance
You may undertake the maintenance routines described in these instructions.
Further dismantling and repair of Renishaw equipment is a highly specialised operation, which must be carried out at an authorised Renishaw Service Centre.
Equipment requiring repair, overhaul or attention under warranty should be returned to your supplier.

Cleaning the probe
Wipe the window of the probe with a clean cloth to remove machining residue . This should be done on a regular basis to maintain optimum transmission.
CAUTION: The OMP40-2 has a glass window . Handle with care if broken to avoid injury.

Changing the batteries
CAUTIONS:
Do not leave dead batteries in the probe.
When changing batteries, do not allow coolant or debris to enter the battery compartment.
When changing batteries, check that the battery polarity is correct.
Take care to avoid damaging the battery cassette gasket.
Only use specified batteries.
Dispose of dead batteries in accordance with local regulations. Never dispose of batteries in a fire.

NOTES:
After removing the old batteries, wait more than 5 seconds before inserting the new batteries.
Do not mix new and used batteries or battery types, as this will result in reduced life and damage to the batteries .
Always ensure that the cassette gasket and mating surfaces are clean and free from dirt before reassembly .
If dead batteries are inadvertently inserted, the LED will remain a constant red .

Battery type

½ AA lithium-thionyl chloride (3.6 V) × 2
****| Saft:
Tadiran:Xeno:| LS 14250
SL-750
XL-050F| | Dubilier:
Maxell:
Sanyo:
Tadiran:
Varta:| SB-AA02
ER3S
CR 14250SE
SL-350, SL-550,
TL-4902, TL- 5902, TL-2150, TL-5101
CR ½AA

OMP40M system

OMP40M system
OMP40M is a special modular version of OMP40-2 which has an enhanced window and metal battery cassette. It enables probe inspection of part features inaccessible to OMP40-2, by fitting selected adaptors and extensions as shown below .
For more information, see page 9.1, “Parts list” .

OMP40M dimensions

OMP40M screw torque values

OMP40-2LS system

Introduction
The OMP40-2LS probe has a reduced switch-on range when compared to an OMP40-2 probe .

Performance envelope with an OMM-2 receiver with OSI or OSI-D interface or OMI-2 / OMI-2T / OMI-2H interface / receiver

Fault-finding

The probe fails to power up (LED not illuminated or fails to indicate current probe settings).| Dead batteries.| Change batteries.
Unsuitable batteries.| Fit suitable batteries.
Batteries inserted incorrectly.| Check battery insertion/polarity.
Batteries removed for too short a time and probe has not reset.| Remove batteries for a minimum of 5 seconds.
Poor connection between battery cassette mating surfaces and contacts.| Remove any dirt and clean the contacts before reassembly.
The probe fails to switch on.| Wrong transmission mode selected.| Reconfigure transmission mode.
Dead batteries.| Change batteries.
Unsuitable batteries.| Fit suitable batteries.
Batteries inserted incorrectly.| Check battery insertion/polarity.
Probe out of range/not aligned with receiver.| Check alignment and if receiver fixing is secure.
Optical/magnetic interference.| Check for interfering lights or motors.
Transmission beam obstructed.| Check that the OMP40-2 and receiver windows are clean and remove any obstruction.
No receiver start signal.| Check start signal by reviewing receiver start LED.
Refer to relevant installation guide.
The machine stops unexpectedly during a probing cycle.| Optical communication obstructed.| Check interface / receiver and remove obstruction.
Interface / receiver / machine fault.| Refer to receiver / machine installation guide.
Dead batteries.| Change batteries.
False probe trigger.| Enable enhanced trigger filter.
Probe unable to find target surface.| Check that part is correctly positioned and that stylus has not broken.
Adjacent probe.| Reconfigure adjacent probe to a lower power mode and reduce range of receiver.
The probe crashes.| Workpiece obstructing probe path.| Review probing software.
Probe length offset missing.| Review probing software.
Controller wired to respond to tool setter instead of inspection probe.| Review installation wiring.
Poor probe repeatability and/or accuracy.| Debris on part or stylus.| Clean part and stylus.
Poor tool change repeatability.| Redatum probe after each tool change.
Loose probe mounting on shank or loose stylus.| Check and tighten as apropriate.
Excessive machine vibration.| Enable enhanced trigger filter.
Eliminate vibrations.
Calibration out of date and/or incorrect offsets.| Review probing software.
Calibration and probing speeds not the same.| Review probing software and make speeds the same.
Calibration feature has moved.| Correct the position.
Measurement occurs as stylus leaves surface.| Review probing software.
Measurement occurs within the machine’s acceleration and deceleration zone.| Review probing software and probe filter settings.
Probing speed too high or too low.| Perform simple repeatability trials at various speeds.
Temperature variation causes machine and workpiece movement.| Minimise temperature changes.
Machine tool faulty.| Perform health checks on machine tool.
Probe fails to switch off.| Incorrect “switch-off” method configured.| Reconfigure to optical off mode.
Optical/magnetic interference.| Check for interfering lights or motors.
Consider removing the interfering source.
Probe is inadvertently switched on by the receiver when using autostart.| Check position of receiver. Reduce receiver signal strength.
Probe out of range.| Review performance envelopes.
Probe is regularly falsely switched on by light interference.| Enable optical transmission legacy mode (start filter on), or consider upgrading to modulated system.
Transmission beam obstructed.| Check that the probe and receiver windows are clean, and remove any obstruction.
Probe fails to switch off
(where timer off is required).| Incorrect switch-off method configured.| Check configuration and alter as required.
Probe placed in carousel when in timeout mode. Timer can be reset by carousel activity| Consider using a carbon fibre stylus. Enable enhanced trigger filter.
Shorten timeout setting.
Consider use of optical on/optical off setting.
Probe false triggers.| Excessive machine vibration or heavy stylus.| Enable enhanced trigger filter.

Parts list

(set to optical on / optical off) – modulated transmission, PROBE 1 start.
OMP40-2| A-4071-2002| OMP40-2 probe with batteries, tools and support card (set to optical on / time off 134 sec) – modulated transmission, PROBE 1 start.
OMP40-2LS| A-4071-3001| OMP40-2LS probe with batteries, tools and support card (set to optical on / optical off) – modulated transmission, PROBE 1 start.
Batteries| P-BT03-0007| ½AA battery – lithium-thionyl chloride (pack of two).
Stylus| A-5000-3709| PS3-1C ceramic stylus 50 mm long with Ø6 mm ball.
Styli tool| M-5000-3707| Tool for tightening/releasing styli.
Tools| A-4071-0060| Probe tool kit comprising Ø1.98 mm stylus tool, 2.00 mm A/F hexagon key and shank grub screw (× 6).
Battery cassette| A-4071-1166| OMP40-2 battery cassette assembly.
Battery cassette| A-5625-1166| OLP40 metal battery cassette assembly.
Battery cassette| A-4038-0301| OMP40-2 battery cap gasket kit.
Shank adaptor assembly| A-4071-0031| Shank adaptor assembly for mounting to OMP60, RMP60, MP700 type shanks.
OMI-2| A-5191-0049| OMI-2 complete with cable 8 m (26.25 ft) long.
OMI-2| A-5191-0050| OMI-2 complete with cable 15 m (49 ft) long.
OMI-2T| A-5439-0049| OMI-2T complete with cable 8 m (26.25 ft) long.
OMI-2T| A-5439-0050| OMI-2T complete with cable 15 m (49 ft) long.
OMM-2| A-5492-0049| OMM-2 with cable 8 m (26.25 ft), tool kit and support card.
OMM-2| A-5492-0050| OMM-2 with cable 15 m (49 ft) tool kit and support card.
OSI interface| A-5492-2000| OSI (multiple probe mode) with DIN rail mounting, terminal block and support card.
OSI interface| A-5492-2010| OSI (single probe mode) with DIN rail mounting, terminal block and support card.
OSI-D interface| A-5492-3000| OSI-D (multiple probe mode) with DIN rail mounting, terminal block and support card.
OSI-D interface| A-5492-3010| OSI-D (single probe mode) with DIN rail mounting, terminal block and support card.
Weak link| A-2085-0068| Weak link (part no. M-2085-0009 × 2) and 5 mm A/F spanner.
Mounting bracket| A-2033-0830| Mounting bracket with fixing screws, washers and nuts.
OMP40M module| A-5626-2001| OMP40M module with batteries, tool kit and support card (set to optical on / optical off) – modulated transmission, PROBE 1 start.
LPE1| A-2063-7001| LPE1 extension bar – 50 mm long.
LPE2| A-2063-7002| LPE2 extension bar – 100 mm long.
LPE3| A-2063-7003| LPE3 extension bar – 150 mm long.
MA4| A-2063-7600| MA4 90° adaptor assembly.
LP2| A-2063-6098| LP2 probe complete with two C spanners and TK1 tool kit.
Publications. These can be downloaded from our website at www.renishaw.com
OMI-2| H-5191-8504| Installation guide: for set-up of the OMI-2.
OMI-2T| H-5439-8510| Installation guide: for set-up of the OMI-2T.
OSI/OSI-D with OMM-2| H-5492-8504| Installation guide: for set-up of the OSI/OSI-D interface with OMM-2.
OSI/OSI-D with OMM-2C| H-5991-8504| Installation guide: for set-up of the OSI/OSI-D interface with OMM-2C.
Styli| H-1000-3200| Technical specifications: Styli and accessories – or visit our Online store at www.renishaw.com/shop.
Probe software| H-2000-2298| Data sheet: Probe software for machine tools – programs and features.
Taper shanks| H-2000-2011| Data sheet: Taper shanks for machine tool probes.

www.renishaw.com/omp40-2
+44 (0) 1453 524524
uk@renishaw.com
© 2009–2023 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 .
RENISHAW® and the probe symbol are registered trade marks of Renishaw plc . Renishaw product names, designations and the mark ‘apply innovation’ are trade marks of Renishaw plc or its subsidiaries. Other brand, product or company names are trade marks of their respective owners .
WHILE CONSIDERABLE EFFORT WAS MADE TO VERIFY THE ACCURACY OF THIS DOCUMENT AT PUBLICATION, ALL WARRANTIES, CONDITIONS, REPRESENTATIONS AND LIABILITY, HOWSOEVER ARISING, ARE EXCLUDED TO THE EXTENT PERMITTED BY LAW .
RENISHAW RESERVES THE RIGHT TO MAKE CHANGES TO THIS DOCUMENT AND TO THE EQUIPMENT, AND/OR SOFTWARE AND THE SPECIFICATION DESCRIBED HEREIN WITHOUT OBLIGATION TO PROVIDE NOTICE OF SUCH CHANGES.
Renishaw plc . Registered in England and Wales . Company no: 1106260 . Registered office: New Mills, Wotton-under-Edge, Glos, GL12 8JR, UK .

Issued: 06 .2023
Part no .: H-4071-8504-06-A

References

• Renishaw: enhancing efficiency in manufacturing and healthcare
• Standard-accuracy machine tool touch probes
• Welcome to the Renishaw Online store

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