Renishaw LP2 User manual

#renishaw
LP2 probe system
www.renishaw.com/lp2
Installation guide

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

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www.renishaw.com/lp2
Contents
Before you begin ...................................................................1-1
Warranty ...........................................................................1-1
CNC machines ......................................................................1-1
Care of the probe ....................................................................1-1
Patents ............................................................................1-2
Intended use........................................................................1-2
Safety .............................................................................1-3
Information to the user ...........................................................1-3
Information to the machine supplier / installer .........................................1-3
Information to the equipment installer ...............................................1-3
Equipment operation ............................................................1-3
LP2 probe system basics ............................................................2-1
Introduction.........................................................................2-1
Principal applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
Horizontal lathes ..........................................................2-1
Machining centre applications ................................................2-1
Signal transmission systems .................................................2-1
Interface unit...................................................................2-1
LP2 probe types .....................................................................2-2
LP2 modular system..................................................................2-3
LP2 probe moves ....................................................................2-4
Probe trigger ..................................................................2-4
Single and double touch..........................................................2-4
System delays .................................................................2-5
Specication ........................................................................2-6
Dimensions.........................................................................2-7
System installation..................................................................3-1
Typical LP2 probe systems.............................................................3-1
Machining centres (radio transmission) ..............................................3-1
Machining centres (optical transmission) when using an OMI-2/OMI-2T/OMI-2H
or an OMM-2 with an OSI/OSI-D interface............................................3-2
Machining centres (optical transmission) when using an OMM-2C
with an OSI/OSI-D interface .......................................................3-3
Machining centres (hard-wired transmission)..........................................3-4
Machining centres (hard-wired transmission - tool setting) ...............................3-5
Lathes (radio transmission) .......................................................3-6

ii LP2 probe system
Lathes (optical transmission) ......................................................3-7
Lathes (hard-wired transmission) ...................................................3-8
Recommended connection diagram for LP2 with HSI-C interface ...............................3-9
Recommended connection diagram for LP2 with HSI interface ................................3-10
Recommended connection diagram for LP2 with MI8-4interface ..............................3-11
Stylus spring force adjustment .........................................................3-12
Stylus on-centre adjustment with probe holders and sockets..................................3-13
Stylus on-centre adjustment......................................................3-13
Lathes – inspection ............................................................3-13
Lathes and machining centres ....................................................3-13
Stylus on-centre adjustment with shank adaptor or shank ....................................3-14
Screw torque values Nm (lbf. ft) ........................................................3-15
Calibrating the LP2..................................................................3-16
Why calibrate a probe? .........................................................3-16
Calibrating in a bored hole or on a turned diameter....................................3-16
Calibrating in a ring gauge or on a datum sphere .....................................3-16
Calibrating the probe length ......................................................3-17
Calibration feedrate and rotary axes ...............................................3-17
Software requirements ...............................................................3-18
Software for turning and machining centres..........................................3-18
Verify your software ............................................................3-18
Maintenance .......................................................................4-1
Service ............................................................................4-1
Maintenance........................................................................4-1
Cleaning the probe front seal ...........................................................4-2
LP2 – LP2H ...................................................................4-2
LP2DD – LP2HDD ..............................................................4-2
LP2 – LP2H – LP2DD – LP2HDD ..................................................4-2
Fault-nding .......................................................................5-1
Parts list ..........................................................................6-1

1-1
www.renishaw.com/lp2
Before you begin
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 ofce.
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 dened in associated Renishaw
documentation. You should consult these Standard Terms and Conditions to nd 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 probe as a precision tool.

1-2 LP2 probe system: Before you begin
Patents
None applicable
Intended use
LP2 is a hard-wired probe that enables automated workpiece inspection and part set-up on CNC machine
tools and grinding machines. LP2 is also used on some of the Renishaw modular probes such as
RMP60M.

1-3
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Safety
Information to the user
In all applications involving the use of machine tools, eye protection is recommended.
The LP2 system must be installed by a competent person, observing relevant safety precautions. Before
starting work, ensure that the machine tool is in a safe condition with the power switched OFF and the
power supply to the HSI-C / HSI / MI 8-4 is disconnected.
Refer to the machine supplier’s operating instructions.
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 output 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 specied by the manufacturer, the protection provided by the
equipment may be impaired.

1-4 LP2 probe system: Before you begin
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2-1
www.renishaw.com/lp2
LP2 probe system basics
Introduction
The LP2 is a compact and versatile probe for applications on CNC lathes and machining centres. A wide
range of styli and accessories is available to provide custom installations.
Principal applications
Horizontal lathes
Small enough to t on a turret for part measuring, tool setting and broken tool detection when mounted in
a suitable position.
Machining centre applications
Set-up and part measuring when spindle mounted. Tool setting and broken tool detection when table
mounted.
Signal transmission systems
• Hard-wired – a range of hard-wired probe sockets is available for inspection and tool setting
applications. For machining centres with manual tool change the LP2 will t the MA2 probe holder.
• Optical or radio – for lathes and machining centres. Easy installation, particularly in retrot
applications because there is no need for the prepared passageways required for hard-wired
transmission cables. LP2 can be used with OMP40M, OMP60M, RMP40M, RMP60M.
Interface unit
A hard-wired installation with LP2 may use the HSI interface; see the HSI hard-wired system interface
installation guide (Renishaw part no. H-5500-8554), or the HSI-C interface; see the HSI-C hard-wired
system interface installation guide (Renishaw part no. H-6527-8501) or the MI 8-4 interface; see the
MI8-4 interface unit installation guide (Renishaw part no. H-2000-5008). The FS1i and FS2i probe sockets
with integral interface may also be used; see the FS1i and FS2i sockets data sheet (Renishaw part no.
H-2000-2073).

2-2 LP2 probe system: LP2 basics
LP2 probe types
There are four versions of the LP2 probe. Each version is best suited to particular applications:
• LP2 – For normal setting/inspection. The metal eyelid protects the diaphragm in a hot chip and
coolant environment.
• LP2H – With higher stylus pressure for long or heavy styli, or where there is excessive machine
vibration.
• LP2DD – LP2HDD – The double diaphragm (DD) arrangement is recommended for grinding
machines and other applications with particle-laden coolant. The LP2HDD is a version with a higher
stylus spring pressure, similar to the LP2H.
NOTE: LP2DD probes are available as original equipment, or existing LP2 probes may be converted
to the DD standard using a conversion kit.
Stylus
LP2
LP2H
LP2DD
LP2HDD
Metal
eyelid
Spring
Diaphragm Rear
O-ring
M16 thread
Stylus spring
pressure adjustment
There is no adjustment possible
with LP2H
Stylus spring
pressure adjustment
Diaphragm
Diaphragm
Swarf Deector
There is no adjustment possible
with LP2HDD