SMAR TT303 Manuel

Introduction

III

INTRODUCTION

The TT303 is from the first generation of Profibus PA devices. It is a transmitter mainly intended for

measurement of temperature using RTDs or thermocouples, but can also accept other sensors with

resistance or mV output such as: pyrometers, load cells, resistance position indicators, etc. The

digital technology used in the TT303 enables a single model to accept several types of sensors, an

easy interface between the field and the control room and several others features that considerably

reduces the installation, operation and maintenance costs.

The digital technology used in the TT303 enables the choice of several types of transfer functions,

an easy interface between the field and the control room and several interesting features that

considerably reduce the installation, operation and maintenance costs.

The TT303 is part of Smar's complete 303 line of Profibus-PA devices.

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.

The system controls variable sampling, algorithm execution and communication so as to optimize

the usage of the network, not loosing time. Thus, high closed loop performance is achieved.

Using Profibus 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.

The TT303, like the rest of the 303 family, has some Function Blocks built in, like Analog Input.

The need for implementation of Fieldbus in small as well as large systems was considered when

developing the entire 303 line of Profibus-PA devices. They have common features and can

configured locally using a magnetic tool, eliminating the need for a configuration tool or console in

many basic applications.

Now, thanks to Fieldbus, the transmitter accepts two channels, i.e., two measurements. This

reduces the cost per channel. Other function blocks are also available. They allow flexibility in

control strategy implementation.

Get the best result of the TT303 by carefully reading these instructions.

WARNING

In case of using Simatic PDM as the configuration and parameterization tool, Smar recommends that

the user does not apply the option "Download to Device". This function can

improperly configure the field device. Smar recommends that user make the use of the option

"Download to PG / PC" and then selecting the Device Menu, use the menus of the transducer,

function and display blocks acting specifically, according to each menu and method for reading and

writing.

TT303 –Operation and Maintenance Instruction Manual

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.

WARNING

This Manual is compatible with version 3.XX, where 3 note software version and XX software release. The

indication 3.XX means that this manual is compatible with any release of software version 3.

Table of Contents

TABLE OF CONTENTS

SECTION 1 - INSTALLATION ................................................................................................. 1.1

GENERAL........................................................................................................................................................................1.1

MOUNTING.....................................................................................................................................................................1.1

NETWORK WIRING........................................................................................................................................................1.1

SENSOR WIRING ...........................................................................................................................................................1.4

TOPOLOGY AND NETWORK CONFIGURATION..........................................................................................................1.6

INTRINSIC SAFETY BARRIER.......................................................................................................................................1.7

JUMPER CONFIGURATION...........................................................................................................................................1.7

POWER SUPPLY............................................................................................................................................................1.7

INSTALLATION IN HAZARDOUS AREAS......................................................................................................................1.8

EXPLOSION/FLAME PROOF .........................................................................................................................................1.8

INTRINSICALLY SAFE....................................................................................................................................................1.8

SECTION 2 - OPERATION ...................................................................................................... 2.1

FUNCTIONAL DESCRIPTION - HARDWARE ................................................................................................................. 2.1

TEMPERATURE SENSORS ............................................................................................................................................ 2.2

THE DISPLAY .................................................................................................................................................................. 2.5

MONITORING .................................................................................................................................................................. 2.5

ALARM ............................................................................................................................................................................. 2.6

SECTION 3 - CONFIGURATION ............................................................................................. 3.1

TRANSDUCER BLOCK.................................................................................................................................................... 3.1

HOW TO CONFIGURE A TRANSDUCER BLOCK .......................................................................................................... 3.1

FUNCTIONAL DIAGRAM OF THE TEMPERATURE TRANSDUCER BLOCK ................................................................ 3.2

TEMPERATURE TRANSDUCER BLOCK GENERAL PARAMETER DESCRIPTION..................................................... 3.2

TEMPERATURE TRANSDUCER BLOCK GENERAL PARAMETER ATTRIBUTES ....................................................... 3.5

TT303 - CYCLIC CONFIGURATION................................................................................................................................ 3.6

SENSOR TRANSDUCER NUMBER .............................................................................................................................. 3.10

JUMPER CONFIGURATION.......................................................................................................................................... 3.11

HOW TO CONNECT TWO SENSORS........................................................................................................................... 3.12

COMPENSATION OF LINE RESISTANCE FOR RTD DOUBLE SENSOR OR OHM SENSOR.................................... 3.12

COMPENSATION OF COLD JUNCTION....................................................................................................................... 3.12

CALIBRATION IN TT303 BY THE USER....................................................................................................................... 3.12

HOW TO CONFIGURE THE ANALOG INPUT BLOCK.................................................................................................. 3.14

PROGRAMMING USING LOCAL ADJUSTMENT.......................................................................................................... 3.17

LOCAL ADJUSTMENT TREE - QUICK GUIDE.............................................................................................................. 3.19

J1 JUMPER CONNECTIONS......................................................................................................................................... 3.20

W1 JUMPER CONNECTIONS ....................................................................................................................................... 3.20

LOCAL PROGRAMMING TREE..................................................................................................................................... 3.20

TRANSDUCER DISPLAY –CONFIGURATION............................................................................................................. 3.22

DISPLAY TRANSDUCER BLOCK.................................................................................................................................. 3.23

DEFINITION OF PARAMETERS AND VALUES ............................................................................................................ 3.24

SECTION 4 - MAINTENANCE PROCEDURES....................................................................... 4.1

TROUBLESHOOTING...................................................................................................................................................... 4.1

DISASSEMBLY PROCEDURE......................................................................................................................................... 4.2

SENSOR ..........................................................................................................................................................................................4.2

ELECTRONIC CIRCUITS.................................................................................................................................................................4.2

REASSEMBLE PROCEDURE.......................................................................................................................................... 4.2

INTERCHANGEABILITY .................................................................................................................................................. 4.2

RETURNING MATERIALS ............................................................................................................................................... 4.3

SECTION 5 - TECHNICAL CHARACTERISTIC ...................................................................... 5.1

ORDERING CODE........................................................................................................................................................... 5.4

APPENDIX A - CERTIFICATIONS INFORMATION ................................................................A.1

APPENDIX B –SRF –SERVICE REQUEST FORM ...............................................................B.1

Installation Flowchart

Yes

Was the transmitter

configured on the bench

to match the application?

Configure the range and unit

(AI block)

Simule the value(s)

of the work range in the sensor(s)

conection terminal(s)

mV or Ohm

Start

Yes

Configure the

1 and

3 - Configuration)

sensor and its

connections (Section

Section

Configure the measuring type

(differantial, dual, backup, or single)

Configure the Damping (AI block)

(Section 3 - Configuration)

Configure the LCD reading

(Section 3 - Configuration)

See manual

(Section 5 - Maintenance)

Is the reading correct?

Check the area classification

and its practices.

Install the transmitter preferably

on weather- protected areas.

Install the transmitter

(mechanically and electrically)

according to the application after

checking the best position for the LCD

(Section 5 - Maintenance)

Power the transmitter properly.

Is the transmitter

reading correct?

Do lower and upper trimTrim

Did you correct the

transmitter reading?

Section 1

1.1

INSTALLATION

General

The overall accuracy of temperature and other measurements depends on several variables.

Although the transmitter has an outstanding performance, proper installation is essential in order to

maximize its performance.

Among all factors which may affect transmitter accuracy, environmental conditions are the most

difficult to control. There are, however, ways of reducing the effects of temperature, humidity and

vibration.

Locating the transmitter in areas protected from extreme environmental changes can minimize

temperature fluctuation effects.

In warm environments, the transmitter should be installed in such a way as 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. For temperature measurements, sensors with cooling-neck

can be used or the sensor can be mounted separately from the transmitter housing.

Use of sunshades or heat shields to protect the transmitter from external heat sources should be

considered.

Humidity is fatal for electronic circuits. In areas subjected to high relative humidity, the O-rings for

the electronic housing covers must be correctly placed and the covers must be completely closed by

tightening them by hand until you feel the O-rings being compressed. Do not use tools to close the

covers. Removal of the electronics cover in the field should be reduced to the minimum necessary,

since each time it is removed, the circuits are exposed to humidity. The electronic circuit is protected

by a humidity proof coating, but frequent exposure 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, as painting cannot protect these parts. Code-approved sealing methods

should be employed on conduit entering the transmitter.

Connecting the sensor as close to the transmitter as possible and using proper wires (See Section 2

- Operation), can decrease measurement error.

Mounting

The transmitter may be mounted in two basic ways:

Separated from the sensor, using optional mounting brackets.

Mounted on the sensor assembly.

It can be mounted in several different positions using the bracket, as shown in Figure 1.3. As shown

in Figure 1.3 one of the conduit inlets for electrical connection is used to mount the sensor integral

to the temperature transmitter.

For better visibility, the digital display may be rotated in steps of 90º (see Figure 4.1).

Network Wiring

Access the terminal block by removing the Electrical Connection Cover. This cover can be locked

closed by the cover locking screw (See Figure 1.1).To release the cover, rotate the locking screw

clockwise.

TT303 –Operation and Maintenance Instruction Manual

1.2

COVER

LOCKING

SCREW

Figure 1.1 - Cover Locking

Cable access to wiring connections are 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 (see Figure 1.2).

Figure 1.2 - Ground Terminals

For convenience, there are three ground terminals: one inside the cover and two externally,

located close to the conduit entries.

WARNING

Do not connect the Fieldbus network wires to the sensor terminals. (Terminals 1, 2, 3 and 4).

ALLOW 150 MM MINIMUM FOR LOCAL

ZERO AND SPAN ADJUSTMENT WITH

MAGNETIC TOOL.

COMMUNICATIONS

TERMINAL

PLUG

CONDUIT

CONNECTION

MOUNTING BRACKET

PIPE 2"

PLUG

WALL OR

PANEL MOUNTING

FOR WALL MOUNTING

2 EXPANSION ANCHOR -

2 HEXAGON SCREW - S8

3/16”X70

2 BOLT AND NUTS - 1/4”X30

NOT INCLUDED

FOR PANEL MOUNTING

Figure 1.3 - Dimensional Drawing and Mounting Positions

POWER SUPPLY

AND COMMUNICATION

(FIELDBUS NETWORK)

TERMINALS

AUXILIARY

COMMUNICATION

TERMINALS

GROUND

TERMINALS

1 2 3 4

COMM

Installation

1.3

The TT303 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 TT303 is powered via

the bus. The limit for such devices is according to the DP/PA coupler limitations for one bus for non-

intrinsically safe requirement.

In hazardous areas, the number of devices may be limited intrinsically safe restrictions, according to

the DP/PA coupler and barriers limitations.

The TT303 is protected against reverse polarity, and can withstand ±35 VDC without damage, but it

will not operate when in reverse polarity.

Use of twisted pair cables is recommended. It is also recommended to ground shield of shielded

cables at one end only. The non-grounded end must be carefully isolated.

NOTE

Please refer to the General Installation, Operation and Maintenance Procedures Manual for more

details.

The Figure 1.4 shows the correct installation of the conduit, in order to avoid penetration of water, or

other substance, which may cause malfunctioning of the equipment.

CORRECT

WIRES INCORRECT

Figure 1.4 - Conduit Installation Diagram

Sensor Wiring

The TT303 accepts up to two sensors and may operate in one of three modes:

Single channel single sensor measurement;

Dual channel dual sensor measurement;

Single channel dual sensor differential measurement;

Single channel dual sensor backup measurement;

NOTE

Avoid routing sensor wiring close to power cables or switching equipment.

In accordance with connection and sensor types, the terminal blocks shall be wired as shown on the

figure 1.5.

TT303 –Operation and Maintenance Instruction Manual

1.4

2 - WIRE RTD OR OHM INPUT

4 - WIRE RTD OR OHM INPUT

DUAL OR DIFFERENTIAL

RTD OR OHM INPUT DUAL OR DIFFERENTIAL

THERMOCOUPLE OR

MILLIVOLT INPUT

THERMOCOUPLE

INPUT MILLIVOLT INPUT

3 - WIRE RTD OR OHM INPUT

1 2 3 4

1 2 3 4 1 2 3 4 1 2 3 4

1 2 3 4

1 2

DUAL OR DIFFERENCTIAL

RTD AND TC INPUT

3 41 2 3 4

10 M

DUAL OR DIFFERENTIAL

RTD AND TC INPUT

1 2

10 M

3 4

Figure 1.5 - Sensor Wiring

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