Austdac SILBUS-TX1T Manuale utente

Title

1 CHANNEL

TEMPERATURE

TRANSMITTER

TYPE SILBUS-TX1T

USER MANUAL

Document Number

120-359-12

Issue

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REVISION CONTROL

CSA amendments

2018.03.23

Address and Logo Update

2017.04.07

Manual Review

2015.10.09

Manual Corrections

2012.08.20

Issue

Details

Date

Written

Designed

Approved

Austdac Pty Ltd

1 / 42 Carrington Road

Castle Hill NSW 2154

Australia

PO Box 6486

Baulkham Hills Business Centre

NSW 2153

Australia

Phone: + 61 02 8851 5000

Fax: + 61 02 8851 5001

Website: www.austdac.com.au

455 Lowries Run Rd,

Pittsburgh, PA 15237

USA

Phone: +1 888 254 9155

Fax: +1 412 635 0179

This document remains the property of Austdac Pty. Ltd. It is subject to its recall and must not be

reproduced in part or whole or its contents divulged to third parties without prior written approval

from Austdac Pty Ltd.

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TABLE OF CONTENTS

REVISION CONTROL ....................................................................................................................2

TABLE OF CONTENTS..................................................................................................................3

PHOTOGRAPHS............................................................................................................................4

TABLES..........................................................................................................................................4

FIGURES........................................................................................................................................4

1 GENERAL DESCRIPTION ..........................................................................................................5

2 WARNINGS AND PRECAUTIONS..............................................................................................5

2.1 USER ACCESS ....................................................................................................................6

2.2 STORAGE, INSTALLATION, USE AND MAINTAINANCE REQUIREMENTS.......................6

2.2.1 Storage...........................................................................................................................6

2.2.2 Installation and conditions of use....................................................................................6

3 FRONT PANEL LAYOUT.............................................................................................................7

4 THEORY OF OPERATION..........................................................................................................8

5 OPERATING INSTRUCTIONS..................................................................................................10

6 CONFIGURATION.....................................................................................................................10

6.1 CONSOLE PORT OPERATION..........................................................................................11

6.2 HELP COMMAND...............................................................................................................12

6.3 REPEAT COMMAND..........................................................................................................12

6.4 VERSION COMMAND........................................................................................................13

6.5 STACK COMMAND ............................................................................................................13

6.6 TEMPERATURE INPUT ADDRESS COMMAND................................................................14

6.7 FASTLINK MARKER COMMAND.......................................................................................14

6.8 ANALOGUE PROTOCOL SELECT COMMAND.................................................................15

6.9 TRIP POINT ADD COMMAND............................................................................................15

6.10 SET POINT DELETE COMMAND.....................................................................................16

6.11 TRIP SET POINT HYSTERESIS COMMAND...................................................................17

6.12 TEMPERATURE INPUT COMMAND................................................................................17

6.13 RANGE COMMAND..........................................................................................................18

6.14 UPLOAD CONFIGURATION COMMAND.........................................................................18

6.15 DOWNLOAD CONFIGURATION COMMAND...................................................................19

7 TERMINATIONS AND CONNECTIONS ....................................................................................21

7.1 TEMPERATURE INPUT PORT...........................................................................................22

7.2 SILBUS NETWORK PORT .................................................................................................22

8 CERTIFICATION .......................................................................................................................23

9 SOFTWARE REVISION AND DISPLAY ....................................................................................23

10 SPECIFICATIONS...................................................................................................................24

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PHOTOGRAPHS

Photograph 1 SILBUS-TX1T front panel.........................................................................................7

Photograph 2 Access to console port and programming switch ......................................................8

Photograph 3 Laptop connected to console port via MEAN1 interface..........................................11

Photograph 4 Hyper Terminal delay setup....................................................................................20

Photograph 5 Typical 3 wire PT100 sensor...................................................................................22

TABLES

Table 1 SILBUS-TX1T Temperature vs. Input voltage ....................................................................9

Table 2 Status LED flash sequence meanings..............................................................................10

Table 3 SILBUS-TX1T Temperature ranges .................................................................................18

Table 4 SILBUS-TX1T Configuration record .................................................................................21

Table 5 Temperature input termination details..............................................................................22

Table 6 SILBUS network port termination details..........................................................................23

FIGURES

Figure 1 PT100 sensors and typical lead identifications..................................................................9

Figure 2 Sensor input schematic.....................................................................................................9

Figure 3 SIBUS-TX1T Connection diagrams.................................................................................21

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1 GENERAL DESCRIPTION

The single channel temperature transmitter is part of a family of explosion protected DIN

rail mounting modules that transmit to and receive from an Austdac SILBUS field bus

network. The SILBUS-TX1T can transmit a single temperature value on an independent

valid SILBUS channel.

The single temperature input is designed to work with a standard two, three or four wire

PT100 temperature sensor. The temperature transmitter can be configured to operate on

one of two temperature ranges, -10oC to +100oC or -20oC to +200oC. This makes the

SILBUS-TX1T particularly suited to monitoring bearing or similar plant temperatures via the

SILBUS network without any requirements for additional power.

The transmitter is housed within a DIN rail mounting enclosure measuring 45mm (W) x

75mm (H) x 110mm (D). The front panel is located between the two top of enclosure

mounted terminal blocks to provide a clear view of the operation indicating LED. A single

LED is provided to show SILBUS network status.

The SILBUS-TX1T can be quickly and simply configured using a laptop computer running

Hyper Terminal and a small plug in programming adaptor. The single temperature input can

be programmed to any SILBUS channel address. The temperature input can also have it’s

over range, hysteresis, digital set point alarm channels and analogue transmission protocol

configured by the user.

2 WARNINGS AND PRECAUTIONS

WARNING

The red "RUN/PROG" switch (see Photograph 2) next to the console port connector

should be in the run position (pushed towards console port connector) at all times.

If PT100 has a foil sheath then this should be connected with pin 12 to earth. It should

not be connect to return ground pin 10, this pin is allocated for the return current of the

PT100.

If the SILBUS-TX1T is used in a manner not specified by Austdac then the protection

provided by the SILBUS-TX1T may be impaired.

PRECAUTIONS

Only qualified personnel shall install and service the SILBUS-TX1T.

Mains supply fluctuations are not to exceed ±10% of the nominal supply voltage.

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SYMBOLS

AC SUPPLY

DC SUPPLY

EARTH

2.1 USER ACCESS

There are no user serviceable parts within the SILBUS-TX1T. The user should not open

or disassemble the SILBUS-TX1T.

2.2 STORAGE, INSTALLATION, USE AND MAINTAINANCE REQUIREMENTS

The SILBUS-TX1T should only be installed, operated and maintained by qualified

personnel in accordance with the condition of safe use as outlined in the certificate.

Ensure that all instructions and warnings are observed.

2.2.1 Storage

The specified storage temperature must be maintained during storage.

2.2.2 Installation and conditions of use

Prior to installation the SILBUS-TX1T should be inspected for the following;

Any external damage to the enclosure.

The SILBUS-TX1T may be installed in any orientation.

The SILBUS-TX1T must be installed in a suitably certified IP54 or better enclosure

or as required by legislation. The enclosure should provide adequate protection,

from impact and ingress of dust and water.

The SILBUS-TX1T should be mounted to a stable surface avoiding areas under

constant vibration and shock.

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3 FRONT PANEL LAYOUT

The SILBUS-TX1T front panel is located between the terminal blocks that form part of the

enclosure. The front panel is shown in photograph 1 below.

Photograph 1 SILBUS-TX1T front panel

Located in the top right hand corner of the front panel is the yellow STATUS indication LED.

The yellow status LED flashes at different rates to indicate the operational status of the

transmitter, see table 1 for more details.

The front panel can be snapped out and removed by using a wide bladed flat screw driver

to gain access to the configuration (console) port and programming switch. Photograph 2

below shows the front panel removed and the location of the console port and programming

switch.

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Photograph 2 Access to console port and programming switch

The black four pin console port connector and the red programming switch are located

behind the upper left corner of the front panel label. The red programming switch selects

the mode the unit is in, either “RUN” or “PROG” mode. You must always be in “RUN” mode

for unit to operate correctly. “PROG” mode is used to configure the unit when no SILBUS

network power is available.

4 THEORY OF OPERATION

The single channel temperature transmitter takes a single input from a PT100 sensor and

transmits it onto the connected SILBUS network using either the ANALINK or FASTLINK

protocols. The temperature input is converted to a sixteen bit (Fastlink) or eight bit (Analink)

value ready for transmission on the configured SILBUS channel. The analogue

transmission protocol can be configured for the temperature input. See Austdac document

120-009-10 for a more detailed description of SILBUS communications.

The PT100 sensor is a two, three or four wire resistor that varies its resistance according to

the surrounding temperature. The sensor has a resistance of 100Ωat 0ºC. The sensor

resistance increases with temperature. The PT100 sensor will work with 2 wires but the

resistance of the sensor leads also contribute to the change in resistance and introduce

errors. Three and four wire sensors provide Kelvin connections that allow for the lead

resistance errors to be compensated out of the final temperature reading. The SILBUS-

TX1T carries out three-wire lead compensation on three and four-wire sensors, two-wire

sensors will work with the transmitter but no compensation is possible. Use three or four-

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wire sensors for better accuracy. The figure below shows three and four wire PT100

sensors and typical lead identifications.

WHT

RED

WHT

RED

Figure 1 PT100 sensors and typical lead identifications

The SILBUS-TX1T temperature transmitter functions by driving a constant current of 200uA

out of terminal 8 through the PT100 sensor and back in through terminal 11. This current

will cause a voltage to appear across the sensor proportional to the sensor temperature.

DRIVE

20mV@0degC

100R@0degC

SENSE

EMC

200uA

TEMPERATURE

SENSOR

PT100

GND

Figure 2 Sensor input schematic

The sensor voltage and therefore temperature is measured at terminal 9 of the transmitter.

SILBUS-TX1T TEMPERATURE VS. INPUT VOLTAGE

TEMPERATURE oC

SENSOR RESISTANCE Ω

INPUT VOLTAGE mV

-20

18.4

-10

19.2

100

20.0

+10

104

20.8

+20

108

21.6

+30

112

22.4

+40

115

23.0

+50

119

23.8

+100

138

27.6

+150

157

31.4

+200

176

35.2

Table 1 SILBUS-TX1T Temperature vs. Input voltage

The sensor voltage at terminal 9 does not include any error voltages introduced by the lead

from terminal 8 to the sensor. The sensor voltage at 0oC is 20mV.

The table above shows some typical temperatures, sensor resistances and SILBUS-TX1T

input voltages.

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The temperature input is also monitored for under and over temperature by comparing it to

configured set points. The under or over temperature can be transmitted as a digital signal

on any valid configurable SILBUS channel address. A hysteresis level can be configured for

each input to stop the set point alarms from chattering because of noise on the temperature

signal from the sensor.

All configurable aspects of the temperature transmitter can be programmed via the console

port. The transmitter will operate with 8, 16, 32, 64 and 128 channel SILBUS networks and

will automatically configure to the number of channels of the connected SILBUS network.

5 OPERATING INSTRUCTIONS

The single channel temperature transmitter does not require any operator action to operate

once it has been installed within an IP54 host enclosure and configured correctly.

An understanding of the various flash sequences of the yellow status LED may be required

to help in the trouble shooting and maintenance of the entire SILBUS network installation.

The status LED provides information on the operational status of the transmitter and the

connected SILBUS network. This information includes correct microprocessor operation

and health of connected SILBUS network. The table below shows the various flash

sequences and their meaning.

STATUS LED FLASH SEQUENCES

FLASH SEQUENCE

NAME

MEANING

NONE –LED ON OR

OFF CONTINUOUSLY

NO FLASH

INTERNAL MICROPROCESSOR FAULT OR

NO POWER.

QUICK FLASH EVERY

1.36mS

FAST FLASH

TRANSMITTER FUNCTIONING

HEALTHY SILBUS

Table 2 Status LED flash sequence meanings

The console port power source selection switch SW1 must always be in the run position for

correct operation of the transmitter. The run position is with the small slide actuator pushed

closest to the black four pin console connector X1.

6 CONFIGURATION

The single channel temperature transmitter has several operational parameters that require

configuration prior to use. All of these parameters can be viewed and changed via the

console port. The console port consists of a small four pin connector and a two position

slide switch behind the front panel label. Access to the console port can be gained by

snapping out the front panel using a wide bladed flat screw driver in one of the slots

between the front panel and terminal blocks.

To use the console port an Austdac MEAN1 interface, A to B USB cable and laptop

computer running Hyper Terminal or any other console program is required.

For more detail on the console port, MEAN1 interface and their use refer to Austdac

document 53-018-11.

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