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Introduction
III
INTRODUCTION
The TP302 is from the first generation of Fieldbus devices. It is a transmitter for position
measurements. It can measure displacement or movement of rotary or linear type. The TP302 reads
the position and makes it available to Fieldbus system. The digital technology and communication
provide an easy interface between the field and control room and several interesting features that
considerably reduce the installation, operation and maintenance costs.
The TP302 is part of Smar's complete 302 line of Foundation Fieldbus devices.
Fieldbus is not only a replacement for 4-20 mA or intelligent/smart transmitter protocols. It contains
much more. Fieldbus is a complete system enabling distribution of the control function to equipment
in the field.
Some of the advantages of bi-directional digital communications are known from existing smart
transmitter protocols: Higher accuracy, multi-variable access, remote configuration and diagnostics,
and multi-dropping of several devices on a single pair of wires.
Some of the disadvantages, in comparison to 4-20 mA technology, are communication speed too
low for closed loop control, poor inter-operability between devices of different type and
manufacturer. Others: not possible to pass data direct from one device to another (peer-to-peer
communication).
The main requirement for Fieldbus was to overcome these problems. Closed loop control with
performance like a 4-20 mA system requires higher speed. Since higher speed means higher power
consumption, this clashes with the need for intrinsic safety. Therefore, a moderately high
communication speed was selected, and the system was designed to have minimum
communication overhead. Using scheduling so as the system controls variable sampling, algorithm
execution and communication to optimize the usage of the network, not loosing time. Thus
achieving high closed loop performance is achieved.
Using Fieldbus technology, with its capability to interconnect several devices, very large control
schemes can be constructed. In order too be user friendly the function block concept was introduced
(users of Smar CD600 should be familiar with this, since it was implemented several years ago).
The user may now easily build and overview complex control strategies. Another advantage is
adding flexibility, the control system may be edited without having to rewire or change the hardware.
The need for implementation of Fieldbus in small as well as large systems was considered when
developing the entire 302 line of Fieldbus devices. They have the common features of being able to
act as a master on the network and be configured locally using a magnetic tool, eliminating the need
for a configurator or console in many applications.
The TP302, like the rest of the 302 family, has several Function Blocks built in, like PID controller,
Input Selector and Splitter/Output selector, eliminating the need for a separate device. This takes to
reduced communication and thereby less dead-time and tighter control, not to mention the reduction
in cost.
NOTE
Get the best results of the TP302 by carefully reading these instructions.
TP302 – Operation, Maintenance and Instructions Manual
IV
NOTE
This manual is compatible with version 3.XX, where 3 denotes software version and XX software release.
The indication 3.XX means that this manual is compatible with any release of software version 3.
Waiver of responsibility
The contents of this manual abides by the hardware and software used on the current equipment
version. Eventually there may occur divergencies between this manual and the equipment. The
information from this document are periodically reviewed and the necessary or identified corrections
will be included in the following editions. Suggestions for their improvement are welcome.
Warning
For more objectivity and clarity, this manual does not contain all the detailed information on the
product and, in addition, it does not cover every possible mounting, operation or maintenance
cases.
Before installing and utilizing the equipment, check if the model of the acquired equipment complies
with the technical requirements for the application. This checking is the user’s responsibility.
If the user needs more information, or on the event of specific problems not specified or treated in
this manual, the information should be sought from Smar. Furthermore, the user recognizes that the
contents of this manual by no means modify past or present agreements, confirmation or judicial
relationship, in whole or in part.
All of Smar’s obligation result from the purchasing agreement signed between the parties, which
includes the complete and sole valid warranty term. Contractual clauses related to the warranty are
not limited nor extended by virtue of the technical information contained in this manual.
Only qualified personnel are allowed to participate in the activities of mounting, electrical connection,
startup and maintenance of the equipment. Qualified personnel are understood to be the persons
familiar with the mounting, electrical connection, startup and operation of the equipment or other
similar apparatus that are technically fit for their work. Smar provides specific training to instruct and
qualify such professionals. However, each country must comply with the local safety procedures,
legal provisions and regulations for the mounting and operation of electrical installations, as well as
with the laws and regulations on classified areas, such as intrinsic safety, explosion proof, increased
safety and instrumented safety systems, among others.
The user is responsible for the incorrect or inadequate handling of equipments run with pneumatic
or hydraulic pressure or, still, subject to corrosive, aggressive or combustible products, since their
utilization may cause severe bodily harm and/or material damages.
The field equipment referred to in this manual, when acquired for classified or hazardous areas, has
its certification void when having its parts replaced or interchanged without functional and approval
tests by Smar or any of Smar authorized dealers, which are the competent companies for certifying
that the equipment in its entirety meets the applicable standards and regulations. The same is true
when converting the equipment of a communication protocol to another. In this case, it is necessary
sending the equipment to Smar or any of its authorized dealer. Moreover, the certificates are
different and the user is responsible for their correct use.
Always respect the instructions provided in the Manual. Smar is not responsible for any losses
and/or damages resulting from the inadequate use of its equipments. It is the user’s responsibility to
know and apply the safety practices in his country.
Table of Contents
V
TABLE OF CONTENTS
SECTION 1 - INSTALLATION .......................................................................................................................................................... 1.1
GENERAL ...................................................................................................................................................................................... 1.1
MOUNTING .................................................................................................................................................................................... 1.1
ELECTRONIC HOUSING ROTATION ........................................................................................................................................... 1.7
ELECTRIC WIRING ....................................................................................................................................................................... 1.7
BUS TOPOLOGY AND NETWORK CONFIGURATION ................................................................................................................ 1.8
JUMPER CONFIGURATION ....................................................................................................................................................... 1.10
POWER SUPPLY ........................................................................................................................................................................ 1.10
RECOMMENDATIONS FOR MOUNTING APPROVED EQUIPMENTS WITH THE IP66/68 W CERTIFICATIONS (“W"
INDICATES CERTIFICATION FOR USE IN SALINE ATMOSPHERES) ..................................................................................... 1.10
ROTARY AND LINEAR MAGNET ............................................................................................................................................... 1.10
REMOTE POSITION SENSOR .................................................................................................................................................... 1.11
INSTALLATION IN HAZARDOUS AREAS ................................................................................................................................... 1.12
SECTION 2 - OPERATION ............................................................................................................................................................... 2.1
FUNCTIONAL DESCRIPTION – HALL SENSOR .......................................................................................................................... 2.1
FUNCTIONAL DESCRIPTION – ELECTRONICS ......................................................................................................................... 2.1
SECTION 3 - CONFIGURATION ...................................................................................................................................................... 3.1
TRANSDUCER BLOCK ................................................................................................................................................................. 3.1
HOW TO CONFIGURE THE TRANSDUCER BLOCK ................................................................................................................... 3.1
POSITION FIELDBUS TRANSDUCER .......................................................................................................................................... 3.1
PARAMETERS TABLE .................................................................................................................................................................. 3.2
CALIBRATION ............................................................................................................................................................................... 3.3
POSITION TRIM ............................................................................................................................................................................ 3.4
VIA LOCAL ADJUSTMENT ............................................................................................................................................................ 3.5
DISPLAY TRANSDUCER BLOCK ................................................................................................................................................. 3.6
DEFINITION OF PARAMETERS AND VALUES ............................................................................................................................ 3.6
PROGRAMMING USING LOCAL ADJUSTMENT ....................................................................................................................... 3.10
BLOCK TYPE AVAILABILITY AND INITIAL BLOCK SET............................................................................................................ 3.12
TABLE OF POINTS - LINEARIZATION ....................................................................................................................................... 3.13
SECTION 4 - MAINTENANCE PROCEDURES ................................................................................................................................ 4.1
GENERAL ...................................................................................................................................................................................... 4.1
RECOMMENDATIONS FOR MOUNTING APPROVED EQUIPMENT WITH THE IP66/68 W CERTIFICATIONS (“W" INDICATES
CERTIFICATION FOR USE IN SALINE ATMOSPHERES) ........................................................................................................... 4.1
DISASSEMBLY PROCEDURE ...................................................................................................................................................... 4.2
REASSEMBLY PROCEDURE ....................................................................................................................................................... 4.3
UPGRADING TP301 TO TP302 .................................................................................................................................................... 4.4
ACCESSORIES ............................................................................................................................................................................. 4.4
EXPLODED VIEW ......................................................................................................................................................................... 4.5
SPARE PARTS LIST...................................................................................................................................................................... 4.6
SECTION 5 - TECHNICAL CHARACTERISTICS ............................................................................................................................. 5.1
FUNCTIONAL SPECIFICATIONS ................................................................................................................................................. 5.1
PERFORMANCE SPECIFICATIONS............................................................................................................................................. 5.1
PHYSICAL SPECIFICATIONS ....................................................................................................................................................... 5.1
ORDERING CODE ........................................................................................................................................................................ 5.2
APPENDIX A - CERTIFICATIONS INFORMATION ........................................................................................................................ A.1
EUROPEAN DIRECTIVE INFORMATION ............................................................................................................................. A.1
HAZARDOUS LOCATIONS GENERAL INFORMATION .................................................................................................... A.1
HAZARDOUS LOCATIONS APPROVALS ............................................................................................................................ A.2
IDENTIFICATION PLATES ...................................................................................................................................................... A.5
CONTROL DRAWING .............................................................................................................................................................. A.7
APPENDIX B – SRF – SERVICE REQUEST FORM ....................................................................................................................... B.1
RETURNING MATERIALS ............................................................................................................................................................ B.2
TP302 – Operation, Maintenance and Instructions Manual
VI
Installation Flowchart
Has the transmitter
been configured
in bench for the
application ?
Configure the transmitter
( Section 1 and Section 3).
Start
Field Installation.
Install the transmitter according
to the application.
Verify area classification and
its respective practices.
NO
YES
Configure Fail Safe value
(Section 3).
Configure Damping (Section 3).
Configure the indication in
local Indicator (Section 3).
Configure the user unit in case
of specific measurements.
(Section 3)
Is the measurement
OK ?
NO
YES
Is
?
the
measuring ok
OK
NO
Using the GSD file, configure
the cyclic data in the system
configuration tool (Section 3)
YES
Consult the manual
Section 4 - Maintenance.
Consult the manual
Section 4 - Maintenance.
Dislocate the system to
upper position, execute the
upper position trim for 100%.
Dislocate the system to
lower position, execute the
lower position trim for 0%.
Power the transmitter.
Fix the transmitter magnet
in a position that allows to the
sensor to travel all magnet range.
Verify the most appropriate
position for local indicator.
Section 1
1.1
INSTALLATION
General
NOTE
The installation carried out in hazardous areas should follow the recommendations of Appendix
A.
The overall accuracy of measurement and control depends on several variables. Although the
converter has an outstanding performance, proper installation is essential, in order to maximize its
performance.
Among all factors, which may affect converter accuracy environmental conditions are the most
difficult to control. There are, however, ways of reducing the effects of temperature, humidity, and
vibration.
In warm environments, the transmitter should be installed to avoid, as much as possible, direct
exposure to the sun. Installation close to lines and vessels subjected to high temperatures should
also be avoided.
Use of sunshades or heat shields to protect the transmitter from external heat sources should be
considered, if necessary.
Humidity is fatal to electronic circuits. In areas subjected to high relative humidity, the o-rings for the
electronics cover must be correctly placed. Removal of the electronics cover in the field should be
reduced to the minimum necessary, since each time it is re-moved; the circuits are exposed to the
humidity.
The electronic circuit is protected by a humidity proof coating, but frequent exposures to humidity
may affect the protection provided. It is also important to keep the covers tightened in place. Every
time they are removed, the threads are exposed to corrosion, since painting cannot protect these
parts. Code approved sealing methods on conduit entering the transmitter should be employed.
Although the transmitter is virtually insensitive to vibration, installation close pumps, turbines or
other vibrating equipment should be avoided.
Mounting
The TP302 mounting depends on the type of movement, linear or rotary. Two brackets are required
for mounting, one for the magnet and the other for the transmitter itself.
NOTE
Make sure that arrow engraved on the magnet coincides with the arrow engraved on the Position
Transmitter when the system is in mid travel. When mounting the Position Transmitter, consider
that:
1 . There is no friction between the internal magnet face and the position sensor salience all
over the travel (rotary or linear).
2. A minimum distance of 2 mm to 4 mm distance is recommended between the magnet
external face and the Position Transmitter face.
Should the transmitter installation change, or magnet change, or should any other modification, the
transmitter will require a re-calibration.
IMPORTANT
If the self-diagnostics detect a transmitter failure, for example the loss of the power, the analog
signal will go to 3.9 mA or to 21.0 mA to alert the user (High or low alarm signal is user
selectable).
TP302 – Operation, Maintenance, and Instructions Manual
1.2
The following Figures 1.1 and 1.3 show both linear and rotary typical mounting:
Rotary Movement
Install the magnet on the valve stem using the magnet mounting bracket.
ROTATY
MAGNET
BRACKET
VALVE
STEM
ROTARY
MAGNET POSITIONER
TRANSMITTER
POSITIONER
TRANSMITTER
BRACKET
Figure 1.1 – Transmitter on a Rotary Actuator
BRACKET FOR REMOTE
SENSOR
REMOTE SENSOR
REMOTE POSITION
TRANSMITTER
M6 x 1SCREWS
(2 PLACES)
“L” BRACKET WITH “U” CLAMP FOR
REMOTE POSITION TRANSMITTER.
Figure 1.2 – Position Transmitter on Rotary Actuator with Remote Position Sensor
Installation
1.3
Linear Movement
Install the magnet on the valve stem using the magnet mounting bracket.
The linear magnet movement must be orthogonal in relation to the main axis of the position
transmitter. For example, if the linear magnet movement is vertical, the transmitter main axis must
be horizontal, as show in Figure 1.3.
Magnet Bracket
Linear
Valve Yoke
Valve Stem
Linear Magnetic
Centralizer Gadget Linear
Position Transmitter
M6 x 25 Screw
Position Trasmitter Bracket
with Clamp “L”
“U”
Figure 1.3 - Transmitter on a Linear Actuator
TP302 – Operation, Maintenance, and Instructions Manual
1.4
CENTRALIZER
DEVICE
VALVE
STEM
VALVE YOKE
LINEAR
MAGNET
REMOTE
SENSOR
“L” BRACKET WITH “U” CLAMP
FOR REMOTE SENSOR
REMOTE POSITION
TRANSMITTER
LINEAR MAGNET
BRACKET
M6 x 1 SCREWS
(2 PLACES)
M6x1 SCREWS
(2 PLACES)
“L” BRACKET WITH “U”
CLAMP FOR REMOTE
POSITION TRANSMITTER
Figure 1.4 – Position Transmitter on Linear Actuator with Remote Position Sensor
Installation
1.5
See below the TP302 and magnets dimensional drawings.
Figure 1.5 – TP302 Dimensional Drawing / Magnets Dimensional Drawing
TP302 – Operation, Maintenance, and Instructions Manual
1.6
REMOTE SENSOR
83
(3.27)
Leave, at least, a 150 mm space, for
zero and span adjustment with the
magnetic tool.
PLUG
ELECTRICAL
CONNECTION
113
(4.45)
(0.35)
9
(2.16)
55
(6.89)
175
76
49.5
55
(2.17)
THREADS FOR SCREWS
M6 x 1 ( 2 PLACES )
127
107
(4.21)
FLEXIBLE SHIELD CABLE
AVAILABLE LENGHTS:
5 m, 10 m, 15 m, 20 m
(2.99)
(5)
(1.95)
(0.94)
24
42
Figure 1.5.a – Remote Sensor Dimensional Drawing
SPECIAL MOUNTING BRACKET – ROTARY VDI / VDE NAMUR
Mounting bracket of the position transmitter for rotary valves actuated via type actuators rack and
pinion, designed to comply with NAMUR VDI/VDE.
POSITON TRANSMITTER POSITON TRANSMITTER
ROTARY MAGNET ROTARY MAGNET
MAGNET BRACKET MAGNET BRACKET
MOUNTING BRACKET MOUNTING BRACKET
PNEUMATIC ACTUATOR
NAMUR VDI/VDER STANDARD PNEUMATIC ACTUATOR
NAMUR VDI/VDER STANDARD
Mounting 80 mm between centers, 20 mm stem
height.
Mounting 130 mm between centers, 30 mm
stem height.
Figure 1.5.b – Special Mounting Bracket Dimensional Drawing - Rotary VDI / VDE NAMUR
Installation
1.7
Electronic Housing Rotation
The electronic housing rotates for a better digital display reading. To rotate it, release the housing
rotation screw.
COVER
LOCKING
SCREW
HOUSING ROTARY
SCREW
Figure 1.6 – Cover Locking and Housing Rotation Set Screw
Figure 1.7 - Cover Locking Screw
Electric Wiring
Access the wiring block by removing the electrical connection cover.
Cable access to wiring connections is obtained by one of the two conduit outlets. Conduit threads
should be sealed by means of code-approved sealing methods.
The unused outlet connection should be plugged accordingly.
The wiring block has screws on which fork or ring-type terminals can be fastened. For convenience
there are two ground terminals: one inside the cover and one external, located close to the conduit
entries.
TP302 – Operation, Maintenance, and Instructions Manual
1.8
+GROUND
TERMINAL
POWER
SUPPLY
TERMINALS
COMUNICATION
TERMINALS
Figure 1.8 – Wiring Block
The TP302 uses the 31.25 kbit/s voltage mode option for the physical signaling. All other devices on
the same bus must use the same signaling. All devices are connected in parallel along the same
pair of wires.
Various types of Fieldbus devices may be connected on the same bus.
The TP302 is powered via the bus. The limit for such devices is 16 for one bus for non-intrinsically
safe requirement.
In hazardous area, the number of devices may be limited to 6 by intrinsically safe restrictions.
The TP302 is protected against reverse polarity and can withstand ±35 Vdc without damage.
WARNING
In hazardous areas with explosion proof requirements, the covers must be tightened with at least 8 turns. In
order to avoid the penetration moisture or corrosive gases, tighten the o-ring until feeling the o-ring touching the
housing. Then, tighten more 1/3 turn (120) to guarantee the sealing. Lock the covers using the locking screw.
In hazardous zones with intrinsically safe or non incendive requirements, the circuit entity parameters and
applicable installation procedures must be observed.
Cable access to wiring connections is obtained by the two conduit outlets. Conduit threads should be sealed by
means of code-approved sealing methods. The unused outlet connection should be plugged and sealed
accordingly.
Should other certifications be necessary, refer to the certification or specific standard for installation limitations.
Bus Topology and Network Configuration
Bus and tree topology are supported. Both types have a trunk cable with two terminations. The
devices are connected to the trunk via spurs. The spurs may be integrated in the device giving zero
spur length. A spur may connect more than one device, depending on the length. Active couplers
may be used to extend spur length.
Active repeaters may be used to extend the trunk length.
The total cable length, including spurs, between any two devices in the Fieldbus should not exceed
1900m.
Installation
1.9
Figure 1.9 - Bus Topology
Figure 1.10 - Tree Topology
TP302 – Operation, Maintenance, and Instructions Manual
1.10
Jumper Configuration
In order to work properly, the jumpers J1 and W1 located in the TP302 main board must be correctly
configured.
J1
This jumper enables the simulation mode parameter in the AI block.
W1
This jumper enables the local adjustment programming tree.
Table 1.1 - Description of the Jumpers
Power Supply
The TP302 receives power from the bus via the signal wiring. The power supply may come from a
separate unit or from another device such as a controller or DCS.
The voltage should be between 9 to 32 Vdc for non-intrinsic safe applications.
A special requirement applies to the power supply used in an intrinsically safe bus and depends on
the type of barrier used.
Use of PS302 is recommended as power supply.
Recommendations for mounting Approved Equipment with the IP66/68 W
certifications (“W" indicates certification for use in saline atmospheres)
NOTE
This TP302 certification is valid for stainless steel transmitter manufactured, approved with the
certification IP66/68 W. All transmitter external material, such as plugs, connections etc.,
should be made in stainless steel.
The electrical connection with 1/2” – 14NPT thread must use a sealant. A non-hardening
silicone sealant is recommended.
The instrument modification or replacement parts supplied by other than authorized
representative of Smar is prohibited and will void the certification.
Rotary and Linear Magnet
The Figure 1.12 shows typical shapes for both magnets. For better transmitter performance, the
linear magnet is presented with different lengths. Consult the ordering code table for the best
choice.
Rotary Magnet
Linear Magnet
Figure 1.12 – Linear and Rotary Magnet Models
Installation
1.11
Remote Position Sensor
The remote magnetic position sensor, based on hall effect, is recommended for high temperature or
extreme vibration applications. It prevents excessive wear of the equipment and, consequently,
increasing the transmitter lifetime..
Smart Position
Transmitter
Cable
Remote Position
Sensor
Figure 1.13 - Remote Position Sensor
The electric signals on the remote sensor’s cable and connections are of low intensity. Therefore,
when installing the cable inside the conduit (maximum limit 20 (meters) length), keep it away from
possible sources of induction and/or magnetic interference. The cable supplied by Smar is shielded
with excellent protection against electromagnetic interference, but despite of this protection, it is
recommended to avoid the cable sharing the same conduit with other cables.
The connector for Remote Position Sensor is easy to handle and simple to install.
See the installation procedure:
Figure 1.14 - Connecting the Cable to the Remote Position Sensor
Figure 1.15 - Connecting the Cable to the Position
Transmitter
TP302 – Operation, Maintenance, and Instructions Manual
1.12
Installation in Hazardous Areas
Consult the Appendix A for Hazardous Location Approvals.
Section 2
2.1
OPERATION
Functional Description – Hall Sensor
Sensor hall supplies an output voltage proportional to the applied magnetic field. This magnetic
sensor is ideal for use in system of sensor of linear or rotary position. The mechanical vibrations do
not affect sensor hall.
Functional Description – Electronics
Refer to the block diagram. The function of each block is described below.
Figure 2.1 - TP302 Block Diagram
Central Processing Unit (CPU), RAM, FLASH and EEPROM
The CPU is the intelligent portion of the transmitter, being responsible for the management and
operation of measurement, block execution, self-diagnostics and communication. The program is
stored in a FLASH memory for easy upgrade and saving data on power-down event occurrence. For
temporary storage of data there is a RAM. The data in the RAM is lost if the power is switched off,
however the main board has a nonvolatile EEPROM memory where the static data configured that
must be retained is stored. Examples of such data are the following: calibration, links and
identification data.
Controller Communication
Monitors line activity, modulate and demodulate communication signals; inserts and deletes start
and end delimiters, and check integrity of frame received.
Power Supply
Takes power of the loop-line to power the transmitter circuit.
Power Isolation
Isolates the signals to and from the input section, the power to the input section must be isolated.
A/D
The A/D converts the input signals to a digital format for the CPU.
TP302 – Operation and Maintenance Instruction Manual
2.2
Display Controller
Receives data from the CPU identifying which segments on the local indicator use to turn on. The
controller drives the backplane and the segment control signals.
Local Adjustment
There are two switches that are magnetically activated. The magnetic tool without mechanical or
electrical contact can activate them.
Local Indicator
Indicates the actual position to the CPU.
Figure 2.2 - Local Indicator
/
