marposs P1 User manual

P1
ELECTRONIC AMPLIFIER FOR
IN-PROCESS APPLICATIONS
Instruction Manual
Manual Code: D2950000UC

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This product conforms to EMC and SAFETY requirements as defined in directives
•2014/35/EU issued 26/02/2014 (LOW VOLTAGE directive)
•2014/30/EU issued 26/02/2014 (EMC directive)
This product has been designed, assembled and tested in conformity with the following European
standards:
•EN61010 - 1: (SAFETY)
•EN61326 - 1: (EMC)
The product conforms to the directive provided the installation conditions described in this manual are
respected.
This product is intended to operate in industrial locations; it is not intended for connections to a
public mains network but is intended to be connected to a power network supplied from a high or
medium voltage transformer.
About the Directive 2002/95/EC “RoHS” regulating the presence of certain hazardous substances in
Marposs electrical and electronic equipment, refer to
http://www.marposs.com/compliance_detail.php/eng/rohs
MANUFACTURER MARPOSS S.p.A.
ADDRESS
Via Saliceto, 13 - Bentivoglio (BO) Italia
www.marposs.com
TYPE OF EQUIPMENT - MODEL
P1
MANUAL CODE
D2950000UC
ORIGINAL LANGUAGE OF THESE
INSTRUCTIONS 11/2014
ISSUE 11/2014
Translation of original document.
MARPOSS S.p.A. does not take on the obligation of notifying possible further changes to the product.
The descriptions reported in this book do not authorize any tampering by non-authorized personnel.
The warranty on the equipments will decay if such tampering is found.
© Copyright MARPOSS S.p.A. 2015

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INDEX
1GENERAL INFORMATION....................................................................................................................... 5
1.1 FOREWARD ...................................................................................................................................................... 5
1.2 ORIGINAL VERSION............................................................................................................................................ 5
1.3 WARNING FOR USER.......................................................................................................................................... 5
1.1TESTING AND WARRANTY .................................................................................................................................................... 6
1.2REQUESTING TECHNICAL SUPPORT AND MAINTENANCE ............................................................................................................. 6
1.3INSTRUCTIONS FOR ORDERING SPARE PARTS............................................................................................................................ 6
1.4CONSULTATION METHOD .................................................................................................................................................... 7
1.4.1 Key to symbols .................................................................................................................................................. 7
1.4 TARGHETTE D’IDENTIFICAZIONE............................................................................................................................ 8
2. SAFETIES ................................................................................................................................................................. 9
2.1GENERAL SAFETY INFORMATION ........................................................................................................................................... 9
2.1.1 Reference European Community Directives ..................................................................................................... 9
2.1.2 Product conformity ........................................................................................................................................... 9
2.1.3 Selecting the operator ...................................................................................................................................... 9
2.1.4 Personal Protection Equipment (PPE)............................................................................................................. 10
1.4.1 General information................................................................................................................................... 11
1.5 P1 SAFETY INFORMATION ................................................................................................................................. 13
1.5.1 Authorised and unauthorised use.............................................................................................................. 13
2.1.5 Risks, protection, warnings and cautions........................................................................................................ 13
3. SHIPPING AND STORAGE .......................................................................................................................................14
3.1GENERAL WARNINGS ....................................................................................................................................................... 14
3.1.1 Personal Protection Equipment (PPE)............................................................................................................. 14
3.1.2 Training ........................................................................................................................................................... 14
3.1.3 State of the work equipment .......................................................................................................................... 14
3.1.4 Moving loads................................................................................................................................................... 14
3.1.5 Receiving the material .................................................................................................................................... 14
3.2PACKING,MOVEMENT,TRANSPORT..................................................................................................................................... 15
3.2.1 Packing ............................................................................................................................................................ 15
3.2.2 Moving the package ........................................................................................................................................ 15
3.2.3 Transporting the package ............................................................................................................................... 15
3.2.4 Disposing of the packing material................................................................................................................... 15
3.3STORAGE 15
3.3.1 General Information ....................................................................................................................................... 15
3.3.2 Storing the P1.................................................................................................................................................. 15
4. INSTALLATION .......................................................................................................................................................16
4.1GENERAL INFORMATION ................................................................................................................................................... 16
4.1.1 Environmental conditions ............................................................................................................................... 16
1.5.2 Removing the P1 from its packaging.......................................................................................................... 17
2P1 GENERAL EQUIPMENT DESCRIPTION ...............................................................................................18
2.1 EQUIPMENT CONFIGURATIONS........................................................................................................................... 18
2.2 FRONT PANEL DESCRIPTION .............................................................................................................................. 19
2.3 CONNECTOR DESCRIPTION ................................................................................................................................ 20
2.4 GENERAL TECHNICAL SPECIFICATIONS .................................................................................................................. 21

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3INSTALLATION PROCEDURE .................................................................................................................22
3.1 INSTALLATION OF ELECTRONICAL UNIT ................................................................................................................ 22
3.2 FASTENING THE ELECTRONIC UNIT....................................................................................................................... 23
3.2.1 Securing the unit to the Machine Tool....................................................................................................... 23
3.2.2 Panel Mounting.......................................................................................................................................... 24
3.2.3 Fastening with support bracket ................................................................................................................. 26
3.3 CONNECTIONS OF ELECTRONIC UNIT ................................................................................................................... 27
3.3.1 Connection to supply voltage..................................................................................................................... 27
3.3.2 Functional Earth Connection...................................................................................................................... 27
3.4 I/O CONNECTION TO MACHINE LOGIC UNIT........................................................................................................... 28
4INSTALLATION OF MEASURING HEAD AND ACCESSORIES ....................................................................31
4.1 DEFINITION OF MECHANICAL PARTS..................................................................................................................... 31
4.2 CONNECTIONS ................................................................................................................................................ 31
4.2.1 Measuring head ......................................................................................................................................... 31
4.2.2 Carriage ...................................................................................................................................................... 31
4.3 POSITIONING OF MEASURING HEAD IN MACHINE.................................................................................................... 32
4.3.1 Vertical adjustment .................................................................................................................................... 32
4.3.2 Horizontal adjustment ............................................................................................................................... 32
4.4 ZEROING ....................................................................................................................................................... 33
4.4.1 Zeroing Procedure...................................................................................................................................... 33
4.4.2 Zero presetting........................................................................................................................................... 33
4.5 MECHANICAL ZERO-SETTING OF MEASURING HEAD ................................................................................................ 33
4.5.2 Azzeramento rapido con leva di bloccaggio............................................................................................... 35
4.6 CYCLOGRAM................................................................................................................................................... 36
5USE OF ELECTRONIC UNIT ....................................................................................................................37
5.1 FRONT PANEL................................................................................................................................................. 37
5.2 SETTING THE CONTROLS TRIGGER POINT ( , , ) ....................................................................................... 39
5.3 SETTING THE DELAY TIME (τ) ............................................................................................................................. 39
5.4 SETTING THE ZERO CORRECTION VALUE (ADJ)........................................................................................................ 39
6DIAGNOSTICS AND MAINTENANCE ......................................................................................................40
6.1 DIAGNOSTIC AT SWITCHING ON .......................................................................................................................... 40
6.2 ROUTINE MAINTENANCE ................................................................................................................................... 41
6.2.1 Cleaning the machine................................................................................................................................. 41
6.2.2 Cleaning the heads ..................................................................................................................................... 41
6.3 EXTRAORDINARY MAINTENANCE......................................................................................................................... 41

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1 GENERAL INFORMATION
1.1 Foreward
The P1 is designed and constructed to be installed in machines such as grinders as a machining control
accessory.
The P1 must be installed in accordance with the instructions provided in this manual and shall not conform to
the European standards and directives listed on page 2 unless these conditions are fulfilled.
Any modification that alters the P1 construction specifications, whether mechanical or electrical, can only be
performed by Marposs that will certify the compliance with the safety standards. Any modification or
maintenance not indicated in this document shall be considered unauthorised.
Marposs declines all responsibility in case of any non-compliance with the above.
The descriptions and illustrations attached to this document are not binding. Marposs reserves the right to
modify the product as and when necessary, in order to improve performance, or for any other reason, and
without the obligation to update this document.
This document may not be reproduced or transmitted, either wholly or partially, in any form or medium
without Marposs’ permission.
Legal action will be taken against any transgressors.
1.2 Original Version
This document was originally written in Italian.
In case of any dispute arising from translation errors and inaccuracies, even where carried out by Marposs,
the definitive version shall be in Italian.
1.3 Warning for User
This instruction manual provides all the specific information necessary for the knowledge and correct use of
the Marposs equipment in your possession.
THE PURCHASER MUST ABSOLUTELY INFORM THE PERSONNEL IN CHARGE OF THE EQUIPMENT
INSTALLATION, USE AND MAINTENANCE ABOUT THE CONTENT OF THIS MANUAL
The description given in this manual is addressed to the following categories of persons:
•Marposs personnel or personnel of the manufacturer of the machine tool that will house the P1
(henceforth the client) who will install the equipment directly.
•Technical personnel of the final user (henceforth the user) that will operate directly with the Marposs
equipment.
•User’s technical Personnel responsible for the maintenance of the production line in which the P1 is
installed.
This manual is an integrant part of the equipment so the user must keep it in good state and available for the
whole life of the equipment.
Marposs’ responsibility is limited to the correct use of the P1, as defined in this manual and its attachments.
Marposs shall give this manual and its attachments to the customer.

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Preparations to be made by the customer.
The Customer must:
•Correctly secure and locate the P1 on its own machine.
•Carry out the electric connections.
•Setup the P1.
The user must
•Program the P1.
•Perform the routine and extraordinary maintenance operations.
1.4 Testing and warranty
Material defects are covered by the warranty with the following limitations:
•GUARANTEE PERIOD: the warranty covers the product and all repairs carried out within the standard
warranty terms.
•SUBJECT OF THE GUARANTEE: the warranty applies to the product and its parts marked with the
serial number or other identification number used by Marposs.
The above warranty applies unless other agreements are reached between Marposs and the Customer.
1.5 Requesting technical support and maintenance
In case of failures or faults that require the intervention of Marposs personnel contact your closest technical
support centre (listed at: http://www.marposs.com/worldwide_addresses.php/eng).
1.6 Instructions for ordering spare parts
To order spare parts please contact your closest Marposs centre (listed at:
http://www.marposs.com/worldwide_addresses.php/eng).

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1.7 Consultation method
The manual uses a specific typographical method. Various safety warnings have been defined.
1.1.1 Key to symbols
WARNING
This warning indicates the possibility of damage to the electronic unit and for other devices that
it is connected to, or the possibility of losing data.
ATTENTION
This warning indicates conditions of risk for the operator or the technician.
ELECTRIC SHOCK RISK
Electric shock hazards
may be present when carrying out fault finding routines on live
components.
FIRE OR EXPLOSION RISK
The P1 cannot be used in location with the risk of explosion and/or fire (the P1 is not certified
pursuant to directive 94/9/EC ATEX).
DANGER OF CRUSHING
Proceed with caution when moving or handling the P1.
DANGER FOR THE ENVIRONMENT
Recycle and/or dispose pursuant to the applicable standards in the destination country.
NO SMOKING
Smoking is prohibited while installing the unit.
[
N.B.
Information that can make it easier to use and understand the system is enclosed in a text
frame, indicated by “N.B.” in bold.
i
INFORMATION
Information about the correct use of the machinery.
THE FINAL MACHINE DOCUMENTATION MUST BE READ
in order to ensure that the machinery is operated correctly.
WARNING – Area protected against ESD.
Observe the procedures for handling devices that are sensitive to electro-static discharges

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1.8 Targhette d’identificazione
The identification plate is positioned on the rear of the P1:
the plate indicates the Marposs product identification code (CODE), the serial number (SERIAL No.) of the
individual P1 and the CE marking.
Warnings:
a) Never remove the plate from the original position selected by Marposs;
b) do not modify or alter any of the technical details indicates on it;
c) do not clean the plate with sharp objects (e.g.: iron brushes), which may make the data illegible.
d) When requesting technical assistance, always quote the data indicated on the plate
[
N.B.
All the data listed on the plate must always be legible.
If a data plate is damaged or even partially illegible due to wear, ask MARPOSS for another one,
quoting the data in these instructions or on the original data plate.

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2 SAFETIES
1.2 General safety information
1.2.1 Reference European Community Directives
The P1 has been designed and manufactured in accordance with the directives indicated on page 2.
The P1must be managed by a grinder type machine used to machine mechanical parts, in compliance with
the applicable safety standards in the user’s country in terms of machinery equipment
1.2.2 Product conformity
The P1 described in this document has been designed and manufactured to be installed in an industrial
plant.
WARNING
Any modification that alters the P1
design and/or manufacturing specifications may only be
implemented by Marposs, who shall be responsible for certifying compliance with the safety
standards.
Therefore the modifications or maintenance interventions not set out in this document shall be
considered unauthorised.
Marposs declines all responsibility in case of any non-compliance with the above.
1.2.3 Selecting the operator
1.2.3.1 Definition of the operator
The R.E.S.S. 1.1.1 “Definitions” of attachment I of machinery directive 2006/42/EC, defines the operator as
the person or persons assigned to install, operate, adjust, clean, repair and move a machine or to repair it.
1.2.3.2 State of health of the operator/installer
The operator assigned to install the P1 must be aware and responsible of the dangers that may be
generated during the installation of machining equipment.

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1.2.4 Personal Protection Equipment (PPE)
The operators assigned to assemble and maintenance of the P1 must use the following personal protection
equipment:
Gauge assembly operator:
PROTECTIVE CLOTHING PROTECTIVE FOOTWEAR
PROTECTIVE GLOVES
Gauge/final machinery operating operator:
The operator does not require particular PPE, apart from that required in the work environment, to operate
the gauge. Other specific information can be found in the manual of the final machine that the gauge will be
fitted in.
Maintenance operator:
PROTECTIVE CLOTHING PROTECTIVE FOOTWEAR
PROTECTIVE GLOVES GOGGLES
The operator must use only PPE that complies with the applicable directives of the relative countries.
IMPORTANT
In order to guarantee the complete safety of the operator this list is not exhaustive.
The operator
must integrate the obligatory personal protection equipment in the production environment (plant)
and assigned by the employer.

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2.1.1 General information
1.2.4.1 Operator's position
The P1 is designed and constructed to interlock with a machine, of which it becomes to all intents and
purposes, a sub-assembly.
Therefore refer to the final machine that the P1 will be installed in for the operator’s behaviours during all the
various operation processes, in particular during production and maintenance.
1.2.4.2 Operator's tasks
The operator assigned to the installation must:
1. lift, transport and store the P1;
2. assemble and adjust the P1;
3. remove the P1.
The operator’s tasks during normal work:
•No operator interventions are required while the P1 is operating: For more information see the final
machine’s manual.
The operator assigned to the maintenance must:
1. perform routine maintenance;
2. perform extraordinary maintenance;
3. signal unexpected situations (e.g. wear, failures, breakages, errors, etc.) not set out in this document
and therefore generated by unforeseen causes.

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1.2.4.3 Training
THE FINAL MACHINE DOCUMENTATION MUST BE READ
The training of the operators assigned to the normal operation must follow the instructions set out
in the documentation of the final machine that the P1 is fitted in, as this documentation cannot be
exhaustive.
The following categories of people require training:
1. operators assigned to transport, store and install the gauge, in order to:
•In order to ensure they are aware of the appropriate lifting and transport methods used for the parts
of the arm, as stipulated by Marposs, in order to prevent the risks associated with moving loads;
•Ensure they are aware of the correct storage procedures for the parts of the P1 in order to prevent
damaging important parts, not only in terms of safety but also from an operational point of view;
•Ensure they are aware of the correct P1 installation procedures, such as wiring the electrical parts, in
order to prevent assembly errors that could generate dangerous situations for the health and safety
of the operators.
2. operators assigned to supervise the normal operation of the P1, in order to:
•Ensure they adhere to the applicable regulations governing the use of the product, and that they
read and following the instructions and other information provided in the attached documentation.
3. operators assigned to the maintenance of the P1, in order to:
•Ensure they are aware of the correct procedures for carrying out scheduled and unscheduled
maintenances activities on the P1.
1.2.4.4 Procedures
Before performing any operation with the P1 described in these instructions, the Operator must check that all
safety conditions are met in order to prevent accidents.
In order to avoid hazardous situations, the operator must read section 2 “SAFETIES” of this document
carefully.

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2.2 P1 Safety information
2.2.1 Authorised and unauthorised use
2.2.1.1 Intended use
The P1 has been designed and built to be installed on automatic machines such as grinders in order to
manage the Marposs measurement heads used for in-process part dimension controls.
[
NOTE
Any use that differs from the use described above shall be considered unauthorised.
Any modification altering the P1 in terms of safety and risk prevention may
only be made by
Marposs, which will certify equipment compliance with safety standards.
Therefore, modifications or maintenance operations not covered by the technical documentation
shall be considered arbitrary.
Marposs declines all responsibility in case of any non-compliance with the above.
1.2.4.5 Unauthorised usage
Do not use the P1:
1. in environments with the risk of explosion or fire;
2. in environments where contaminants such as acids, corrosive gases, salts etc. are present (see
para. 4.1.1.1 and 1.5.1.2;
3. in environments where the P1 may be exposed to radiation such as microwaves, ultraviolet rays,
lasers, X rays, etc. - see para. 1.5.1.3
Never:
4. modify the original P1 settings;
5. connect the P1to power supplies having specifications that differ from those described in this
manual;
6. use components for uses not set out by Marposs.
1.2.5 Risks, protection, warnings and cautions
1.2.5.1 Residual risks
Electrical wiring
ELECTRIC SHOCK RISK
When looking for faults with live parts there is the risk of electric shock caused by the direct or
indirect contact (suitable clothing must be used).
It is important to remember that incorrect actions by the operator can generate residual risks.
Due to the type of construction it is not possible to guarantee absolute safety against risks and dangers
generated by:
•Operator carelessness,
•Non-compliance with the information and indications contained in these instructions,
•Deliberately tampering with the P1 and/or its safety devices,
•Tampering with the fixed and movable safety panels.

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3 SHIPPING AND STORAGE
1.3 General Warnings
1.3.1 Personal Protection Equipment (PPE)
The operators assigned to the transport, storage and installation of the P1 must be provided with and use the
PPE indicated in section 2.1.4, as well as the obligatory PPE for the environment that the P1 is used in.
1.3.2 Training
The operators assigned to the transport, storage and installation of the P1 must be trained and informed as
required by the applicable directives in the respective countries.
1.3.3 State of the work equipment
To perform the transport, storage and installation operations the operators must use the equipment listed in
the relevant sections.
The work equipment must be in a good state, especially in terms of wear, age and fatigue.
The equipment must be selected based on the legal requirements in terms of work equipment and must be
used in compliance with the manufacturer's requirements.
1.3.4 Moving loads
When moving loads the operators must pay the utmost attention in order to avoid dangerous movements that
could generate dangerous situations for themselves and for the people exposed in the danger zone.
The movement operations must be performed in compliance with the instructions of the lifting equipment
used.
1.3.5 Receiving the material
During packing all the P1's technical material is thoroughly checked in order to avoid shipping damaged
material.
When unpacking the material check that the P1 is perfectly intact and is not damaged: if it is contact Marposs
immediately.

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1.4 Packing, movement, transport
1.4.1 Packing
The P1 is protected with carton and an internal insert for the movement and transport operations.
1.4.2 Moving the package
The package can be lifted manually as set out by the general health and safety standards in the work place
for manually moving loads, especially when lifting a load from the ground.
1.4.3 Transporting the package
The package containing the P1 must be transported with covered transport equipment to prevent exposing
the package and the P1 to atmospheric agents.
1.4.4 Disposing of the packing material
The packaging used for the P1 consists of materials that are not dangerous, in terms of disposal, for people,
animals or materials.
The operators assigned to disposal must bear in mind that the packaging consists of:
•Carton: external container and internal insert
•Polyurethane film: internal insert.
DANGER FOR THE ENVIRONMENT
The polyurethane film is NOT biodegradable. Do not dispose of it in the surrounding
environment: recycle and/or dispose in compliance with the applicable standards in the
destination country.
1.5 Storage
1.5.1 General Information
The mechanical and electronic components installed in the P1 have been selected based on their reliability
and resistance. The components comply with the applicable construction requirements in terms of safety and
have been designed to support transport and storage temperatures between –20 °C a +70 °C (-4° F
÷
158°
F).
1.5.2 Storing the P1
The P1 must be stored in covered premises with limited exposure to dust and humidity.
The warehouse flooring must be horizontal and free of irregularities.
Do not position other materials, even light items, on top of the P1 package or the P1 itself, in order to avoid
damaging it.

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4 INSTALLATION
1.6 General Information
Before starting the P1 installation operations the operator must ensure that all the normal mechanical
workshop equipment is available.
NO SMOKING
During the assembly operations, operators must not handle foreign or dangerous objects, as
their hands must be free to react rapidly.
For this reason smoking is prohibited while installing the unit.
1.6.1 Environmental conditions
Upon installation the operator must check that the final machine has been designed and constructed to
operate in the environmental conditions set out below.
1.6.1.1 Type of environment
The P1 and the relative electrical components have been designed and constructed to be installed in an
industrial plant and to be used only in closed environments where they cannot be subject to atmospheric
agents.
Unless indicated otherwise in the contract the P1 can operate regularly only in the environmental conditions
set out below. Environmental conditions that differ from the ones indicated could cause failures or breakages
and generate dangerous situations for the health and safety of the operators and people exposed.
1.6.1.2 Explosion and/or fire
DANGER OF EXPLOSION AND/OR FIRE
P1 does not satisfy the requirements of the 94/9/EC (ATEX) directive.
The product has not been designed and manufactured to be operated in environments where
there are explosion or fire hazards.
1.6.1.3 Environment air temperature
The mechanical and electrical components can operate correctly at an air temperature between +5 e + 40 °C
(41 e 104 °F).

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1.6.1.4 Humidity
The mechanical and electrical components are designed to operate correctly at a maximum relative humidity
level of 80% and temperatures of up to 31°C (87.8°F), decreasing linearly to a relative humidity level of 50%
at a temperature of 40°C (104°F).
1.6.1.5 Altitude
The electrical components are designed to operate correctly up to 2000 metres above sea level.
4.1.1.1 Contaminating agents
The electrical components have been adequately protected against the infiltration of solid and liquid bodies
for the intended use of the P1 and the environment that the P1 is used in.
Unless otherwise stated in the contract, the electrical components DO NOT have specific protections against
contaminating agents such as dust, liquids, acids, corrosive gases, salt, etc.
If using electrical components and the complete equipment in environments subject to such contaminating
agents contact Marposs immediately. Marposs will check the suitability of the assembly based on the
environments they are used in.
4.1.1.2 Ionising and non-ionising radiation
The electrical components ARE NOT specifically protected against radiation such as microwaves, ultraviolet
rays, lasers, X-rays.
If the P1 is exposed to radiation, additional measures must be implemented to prevent to incorrect operation
of the components and their early deterioration.
4.1.1.3 "Normal” environmental lighting
The installation procedure must be carried out under “normal” lighting conditions, i.e. without dazzling the
operators with too much light or causing them to strain their eyes in insufficient lighting.
The P1 installers must comply with the minimum requirements set out by the applicable laws in the
respective countries in terms of natural and artificial lighting of the premises.
If there is poor lighting in the work place the operator must use portable lighting equipment.
4.1.2 Removing the P1 from its packaging
Marposs has not stipulated any special equipment to be used when removing the P1.
ATTENTION
Handle with care: Static sensitive components.
Before accessing the front panel, operators must make sure they have eliminated any
accumulated electrostatic charges by touching a metallic surface that is
connected to the
building earth system.

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5 P1 GENERAL EQUIPMENT DESCRIPTION
5.1 Equipment configurations
The content of this manual concerns all the configurations of P1, therefore only the sections relevant to the
specific application must be consulted.
The configuration of the P1 electronic amplifier in use is determined based both on code no. (reported on
the plate found on the rear panel) and on coding plan.
Coding plan of
P1
Code N.: 883H0MRFSP
Description
Code
“
H
” Hardware composition
without casing

with casing
4
5
“
M
” measurement type
measurement with 1 transducer (+ sign)
measurement with 1 transducer (– sign)
measurement with 2 transducers (+T1, +T2)
measurement with 2 transducers (-T1, -T2)
measurement with 2 transducers (+T1, -T2)
measurement with 2 transducers (-T1, +T2)
0
1
2
3
4
5
“R” 0
“F” adjustment range of zero-setting potentiometer
+/- 500 micron (+/- .020”)
+/- 100 micron (+/- .004”)
1
2
“S” types of meter scale
scale in metric, white
scale in metric, yellow
scale in metric/inches, white
scale in metric/inches, yellow
scale in inches, white
0
1
2
3
4
“
P
”
0

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5.2 Front Panel Description
Figure 1 P1 front panel
Front panel
1 Readout meter with automatic scale change
2 Led for millesimal scale
3 Led for centesimal scale
4 Mechanical adjustment of meter
5 Function selector
6 Cycle led
7 Led indicating end of delay
8 Adjustment pushbuttons

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5.3 Connector Description
Figure 2. Connections of the electronic unit (rear view)
A
Identification plate (code and serial number) of the electronic amplifier and power supply
specifications (power supply voltage value, phase rating). (See section 6.3.1 )
B Power-on switch
C Fuse on supply voltage.
D Electrical power supply collector. See para. 6.3.1 “Connecting the power supply”
I/O Male, 25 pin DSUB type connector for machine logic interface I/O signals. See section 6.4.
W1 10-
pole male connector. Connection of measuring head. If the measuring head has two
transducers and two connectors, the special Y-shaped connection cable is used.
M5 terminal for “operational earth” connection.
[
NOTE
P1 WITH CASE: Position the unit so that it is not difficult to disconnect the two connectors
manually (“D” and “I/O” in Figure 2)
PANEL MOUNTED P1: Must be fitted with a switching device that can be used to isolate the unit
from its two power supplies (“D” and “I/O” in Figure 2).
The switching device must isolate all the power supply conductors and be easy to access and
operate. It must not be necessary to use any kind of tool to operate it.
A
B
C
D
I/O
W1