Trolex Sentro 8 Page 12 User Manual Download

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12 TX9165-UM-EN-07

1.6 Electrical Details

Description

Mining Ex

General Purpose

Supply voltage

12 V dc (+/- 10%)

24 V dc (+/- 10%)/

85 to 265 V ac

Supply current

200 mA (maximum loading including one pellistor eModule)

Output relays

Four independent alarms relays each programmable to any

alarm setpoint on any monitoring channel for preferred alarm

priority grouping

Relay contacts

One changeover contact on each relay

Contact rating

Suitable for, and clearance

compatible for, intrinsically

safe circuits

2 Amps 230 V ac

www.trolex.com

Summary of Contents for Sentro 8

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Page 3: ...itions 35 3 6 Datacomms 36 4 Setup and Calibration 37 4 1 Controls and Indicators 37 4 1 1 Navigation 39 4 2 Start up Screen 40 4 2 1 Base Screens 40 4 2 2 Sensor Inputs Overview 42 4 2 3 Relay Output...

Page 4: ...f Gas Sensing eModules 86 7 3 Service Replacement Sensing Modules 88 7 4 Replacing a Sentro Sensing Module 88 7 5 Maintenance and Calibration Log 91 7 6 Record Keeping 92 7 7 Protection Grid 92 7 8 Se...

Page 5: ...sure Temperature Vibration Speed Rotation Most suitable 0 4 to 2 V and 4 to 20 mA inputs Pre calibrated plug in Sentro eModules and rModules can be user configured to any combination of measuring para...

Page 6: ...hazardous areas 24 V dc 85 to 265 V ac supply universal 24 V dc supply 2 Amps 230 V ac Underground Mining andTunnelling TX9165 01i Application Supply voltage Remote sensors Output relay contacts Type...

Page 7: ...165 User Manual TX9165 UM EN 07 7 1 3 Product Options TX9165 Sentro 8 Sensorstation Mining Ex General Purpose 12 V dc TX9165 01 24 V dc TX9165 03 102 85 to 265 V ac universal TX9165 03 114 www trolex...

Page 8: ...8 TX9165 UM EN 07 1 4 Dimensions 1 4 1 TX9165 Sentro 8 Sensorstation Four Gas Ports www trolex com...

Page 9: ...TX9165 User Manual TX9165 UM EN 07 9 1 4 2 TX9165 Sentro 8 Sensorstation Eight Gas Ports www trolex com...

Page 10: ...ge temperature 20 to 60 C Humidity 0 to 95 non condensing Pressure 700 to 1300 mbar Housing material Reinforced polymer anti static suitable for use in hazardous areas EMC compliant Weight 2 8 kg Alar...

Page 11: ...display of Logged data Function programming Screen contrast adjustment Keycode security barrier Two independently programmable setpoint alarm levels selectable for Over Under or Window alarm function...

Page 12: ...um loading including one pellistor eModule Output relays Four independent alarms relays each programmable to any alarm setpoint on any monitoring channel for preferred alarm priority grouping Relay co...

Page 13: ...same type but an alternative may be inserted if required User configurable coding slots at each module bay can be individually configured using coding stops to prevent invalid sensing module combinat...

Page 14: ...thane CH4 Methane CH4 Methane CH4 Sensing element Poison resistant pellistor with active temperature humidity compensation Sensing range 0 to 100 LEL 0 to 4 v v 0 to 5 v v Linearity Linear to 3 v v an...

Page 15: ...de SO2 Sensing element Electrochemical cell Sensing range 0 to 50 ppm 0 to 250 ppm 0 to 500 ppm 0 to 50 ppm 0 to 20 ppm Linearity 2 FS Drift 2 per month Repeatability 2 Response timeT63 20 secs 20 sec...

Page 16: ...Linearity 2 FS 5 FS 5 FS 5 FS 2 FS Drift 2 per month 2 per month 10 per year 2 per month 2 per month Repeatability 2 Response timeT63 20 secs 20 secs N A 20 secs 70 secs Operating life 2 years 2 year...

Page 17: ...de sensors TX6351 259 must be continuously powered to maintain calibration stability If power has been absent for more than 10 minutes it may take 24 48 hours for the sensor to restore stability Do no...

Page 18: ...00 v v Zero drift 0 05 v v per month 1 LEL per month 0 5 v v per month 0 5 v v per month 1 v v per month Repeatability 0 1 v v 2 LEL 2 v v 0 05 v v 2 v v Response timeT63 15 secs Response timeT90 30 s...

Page 19: ...e fitted with rModules in positions where no eModules are being used TX9160 301 4 to 20 mA Industrial standard analogue sensor input 2 and 3 wire options TX9160 303 0 4 to 2 V Voltage input signals an...

Page 20: ...ion stated in the Ex certificates for the Sentro eModules and rModules are satisfied when mounted in the Sentro 8 Sensorstation as are the conditions for impact protection and external fuse protection...

Page 21: ...Certificate number IECEx SIR 09 0120X Ex Certification Code Ex ia I Ma General Conditions for Safe Use Prior to installation it is essential that the user refers to the relevant certificate to ensure...

Page 22: ...connected to the 0 V input of the equipment that the rModule is plugged into The Ui presented by an externally powered sensor to any rModule terminals 2m or 3m shall not exceed the 14 4 V Russia Certi...

Page 23: ...ule terminal 1m power The 0 V of the external sensor power supply shall be connected to the 0 V input of the equipment that the rModule is plugged into The Ui presented by the external sensor on the r...

Page 24: ...ormation Sensitivity Electrochemical cells for toxic gases can be affected by other interfering gases which may displace the subject gas being monitored Steam laden atmospheres and condensation can al...

Page 25: ...ones tetraethyl lead sulphur compounds and phosphate esters can cause permanent degradation poisoning Hydrocarbons may also cause temporary inhibition Interference If the atmosphere to be monitored co...

Page 26: ...teristics of the gas source can be influenced by many factors including the relative density or buoyancy of the gas the pressure at the point of release the ambient temperature and the ventilation of...

Page 27: ...ly calculate STEL and TWA limits in accordance with COSHH standards If the facility is selected for use ensure that all accumulated data is reset to zero before the commencement of a working period 3...

Page 28: ...and contacts to intrinsically safe standards so different external intrinsically safe control circuits may be connected to the Sentro 8 Sensorstation Datacomms Ports Datacomms signals must be approve...

Page 29: ...9165 UM EN 07 29 Relay Operation R1 R2 R3 and R4 Setpoint Setup in OVER condition Setpoint Setup in UNDER condition Power OFF O LED LED Power ON I Setpoint activated OFF Setpoint activated ON Section...

Page 30: ...le from the Sentro rModule 4 to 20 mA Analogue Sensing Module TX9160 301 2 wire signal loop Line powered sensor 2 wire signal loop Additional wire for sensor power 0 V 2 wire signal loop 2 wires for p...

Page 31: ...000 m 10000 m 80 m 200 m 20 m 50 m 200 m 2000 m Volt drop introduced on to the common 0 V line by the supply feed to the sensor will be superimposed on to the signal The signal accuracy shift caused b...

Page 32: ...CT Sensing Module TX9160 501 NAMUR proximity sensors DN 19234 Discrete fault alarm generated for OPEN CIRCUIT and SHORT CIRCUIT line condition Can also be used with conventional ON OFF switches rModul...

Page 33: ...nt resistor is added Switches with series diode Detection of SHORT CIRCUIT switch line with series diode Detection of OPEN CIRCUIT switch line also when contact shunt resistor is added Max cable lengt...

Page 34: ...V dc Sensor certification Ex ia 1 M1 Checkpoint Creepage and clearance on terminal groupings of the Sentro 8 Sensorstation are sufficient to permit the routing of circuits emanating from different int...

Page 35: ...for non standard configurations according to specification Checkpoint To ensure equal internal power sharing do not fit Flammable Gas eModules and Infrared eModules above one another Locate these eMo...

Page 36: ...36 TX9165 UM EN 07 3 6 Datacomms The datacomms output is RS485 standard supporting Modbus protocol www trolex com...

Page 37: ...TX9165 User Manual TX9165 UM EN 07 37 4 Setup and Calibration 4 1 Controls and Indicators www trolex com...

Page 38: ...38 TX9165 UM EN 07 www trolex com...

Page 39: ...The Setup Keypad consists of a navigation keypad and an OK key The navigation keypad is a four way controller to navigate you through the software Holding down one of the direction arrows on the navig...

Page 40: ...e four Base Screens will appear The four Base Screens display the following 1 2 Sensor Inputs Overview two screens one displaying channel group A to D and the other channel group E to H 3 Relay Output...

Page 41: ...nel exclusions Setpoint 1 alarm SP1 General alarm Setpoint 2 alarm SP2 High alarm Exposure alarms TWA STEL Over range input signal Under range input signal High fault Low fault 3 Relay Outputs Overvie...

Page 42: ...ect OK 4 2 2 Sensor Inputs Overview The detail view of each channel is displayed on four five screens in the following order Mono View Exposure View toxic gas eModule only Minmax View Trend View Log V...

Page 43: ...nd Setpoint 2 SP2 High alarm marker with a numerical value on the right side Alarm Messages Setpoint 1 SP1 General alarm or Setpoint 2 SP2 High alarm On Setpoint 2 SP2 High alarm On The input signal i...

Page 44: ...3 Trend View The display field displays 100 logged readings and will jump forward in lots of ten Total maximum logged readings 1 to 4000 Setpoint 1 SP1 General alarm Setpoint 2 SP2 High alarm Trend cu...

Page 45: ...ll up or down to review the Log and select OK to view the general Trend around the current Log entry Select OK to return to Log 4 2 2 5 Exposure View If a toxic Sentro eModule has been activated to mo...

Page 46: ...value Preset alarm limits that activate the Exposure alarm signals of the eModule for STEL and TWA Checkpoint STEL Short term exposure limit of total accumulated units over a rolling 15 minute period...

Page 47: ...o TWA Type of incoming signal The screen prompts are as follows The incoming signal is a Set function The incoming signal is a Reset function Non valid function 4 2 4 Audio Visual Alarms Overview Info...

Page 48: ...heck code Set code Display Contrast Auto scroll Backlight Confidence Time and Date Log Datacomms Reset Exposure 4 3 1 Security To Access the Security Menu From the Main Setup Menu use the navigation k...

Page 49: ...elect OK Use the navigation keypad scroll to Set or Quit and select OK Checkpoint To Open the Security Barrier When Set Use the navigation keypad scroll up or down on the first digit to the required n...

Page 50: ...rolltime From the Display Settings Menu use the navigation keypad scroll to Scrolltime and select OK Use the navigation keypad scroll up or down on the first digit scroll right to the second digit rep...

Page 51: ...set On at all times to indicate to users that the Sentro 8 is functioning correctly 4 3 3 Time and Date To Access theTime and Date Setup Menu From the Main Setup Menu use the navigation keypad scroll...

Page 52: ...ro 8 internal clock is powered by a miniature lithium battery The battery has a life expectancy in excess of 10 years 4 3 4 Log Readings of data for each channel will be continuously recorded at prede...

Page 53: ...oll up or down to change the Log Period digits and select OK Use the navigation keypad scroll to Set or Quit and select OK To Clear the Log Caution Always clear the Log after any fundamental changes h...

Page 54: ...ion network or to interface with a PC or SCADA system Data Protocol Modbus Format Binary Databits 8 Stopbits 1 Parity None Data rate 300 600 1200 2400 4800 9600 14400 19200 28800 38400 57600 115200 Ad...

Page 55: ...he second digit in Address and select OK Use the navigation keypad scroll to Set or Quit and select OK To Change the Data Rate From the Datacomms Setup Menu use the navigation keypad scroll to Data Ra...

Page 56: ...gation keypad scroll to TX Off and select OK Use the navigation keypad scroll up or down on the first digit to the required TX Off number scroll right to the second digit Repeat the above for the seco...

Page 57: ...he Main Setup Menu use the navigation keypad scroll to Reset Exposure and select OK To Reset Exposure From the Reset Exposure Menu select OK use the navigation keypad scroll to Yes or No and select OK...

Page 58: ...navigation keypad scroll to the required channel A B C or D press and hold down the left arrow on the navigation keypad After a few seconds the Sentro eModule Setup Menu will appear The options are a...

Page 59: ...u are still unsure contact service trolex com for assistance Checkpoint Ensure the area where the equipment is being calibrated is well ventilated Observe appropriate Health and Safety legislation and...

Page 60: ...reading Open the valve and apply clean air from the test gas cylinder at a rate of 1 litre min to clear any gas from the sensor Wait for the reading to settle at a stable value not necessarily 0 When...

Page 61: ...rate Span procedure If they do not match then Change the value as follows Use the navigation keypad scroll to Change and select OK With Expected highlighted select OK Use the navigation keypad scroll...

Page 62: ...ration gas at a rate of 1 litre min to clear any clean air from the sensor Wait for the reading to settle at a stable value this is not necessarily the calibration gas value and select OK when stable...

Page 63: ...Setup Menu use the navigation keypad scroll to Setpoint 1 or Setpoint 2 and select OK If a Security Code has been enabled you will be prompted to enter it enter the Security Code and select OK Activat...

Page 64: ...tup Menu use the navigation keypad scroll to Level and select OK Use the navigation keypad scroll up or down on the first digit to the required Level value Scroll right to the second digit Repeat the...

Page 65: ...Relay 3 output Relay 4 output The on board audio visual alarm The AssignTo of Setpoint 1 and Setpoint 2 can be setup to preference From the Setpoint 1 or Setpoint 2 Setup Menu use the navigation keypa...

Page 66: ...ule fault To Access Assign Fault From the Sentro eModule Setup Menu use the navigation keypad scroll to Assign Fault and select OK If a Security Code has been enabled you will be prompted to enter it...

Page 67: ...ecurity Code has been enabled you will be prompted to enter it enter the Security Code and select OK The preset limits of STEL and TWA can be viewed STEL and TWA alarm states can be assigned to the fo...

Page 68: ...etup Menu use the navigation keypad scroll to Status and select OK If a Security Code has been enabled you will be prompted to enter it enter the Security Code and select OK From the Status Menu selec...

Page 69: ...red channel E F G or H Press and hold down the left arrow on the navigation keypad After a few seconds the Sentro rModule Setup Menu will appear The options are as follows Calibrate if PT100 fitted Sc...

Page 70: ...still unsure contact service trolex com for assistance 4 5 1 Scaling The various characteristics of the analogue input signal scale values can be configured To Access Scaling From the Sentro rModule S...

Page 71: ...s A menu of most standard engineering units is available for adding on to the signal value displayed An option called Create User Defined Units will appear in the units menu choice Specific user defin...

Page 72: ...you will be prompted to enter it enter the Security Code and select OK Activate The Activate mode of Setpoints can be setup to preference From the Setpoint 1 or Setpoint 2 Setup Menu use the navigati...

Page 73: ...Relay 1 output Relay 2 output Relay 3 output Relay 4 output The on board audio visual alarm The AssignTo of Setpoint 1 SP1 General alarm and Setpoint 2 SP2 High alarm can be setup to preference The s...

Page 74: ...state Analogue input signal over range Analogue input signal under range Module fault To Access Assign Fault From the Sentro rModule Setup Menu use the navigation keypad scroll to Assign Fault and se...

Page 75: ...tro rModule can be excluded to disable alarm activity To Access Status From the Sentro rModule Setup Menu use the navigation keypad scroll to Status and select OK If a Security Code has been enabled y...

Page 76: ...ximity sensors Setup functions are the same as for Analogue input rModules Mono View The Mono View will display the Present Absent status of the input switch signal 4 5 7 Setup of an On Off Diode Inpu...

Page 77: ...in series at the remote point The rModule will respond to a short circuit condition occurring by generating a Low Fault condition Mode Resistor In addition to the operation of the No Resistor mode wh...

Page 78: ...rom a Fault on modules A to H From other relays fault monitoring From the A V Alarm fault monitoring The response characteristics of each of the relays can be setup according to functional requirement...

Page 79: ...adjustable time 4 6 2 PulseTime Set the length of relay pulse when operating in Pulse Mode 0 to 25 seconds 4 6 3 Assign Fault The function of each relay is monitored for correct operation and the Setp...

Page 80: ...e same time so creating an And decision Voting Inputs If Setpoint Commands are assigned to the relay from for example 4 assignors set the And function at 2 The relay will activate on a vote of any 2 o...

Page 81: ...ng modules A to H From a Fault on sensing modules A to H Relays 1 to 4 fault monitoring 5 1 Alarm Severity Selection General Alarm Slow repeating pulse Warning Alarm Faster double repeating pulse Crit...

Page 82: ...te a Fault signal if a device failure is detected The Fault signal will be generated at the moment when the Audio Visual alarm is activated On The Fault state can be assigned to Relay 1 output Relay 2...

Page 83: ...nge When over range is detected on a pellistor gas sensing eModule the Sentro 8 Sensorstation will switch into Overrange Lock The screen will display the message Pell Over The transmitted output data...

Page 84: ...ted 6 3 Replacing a Sentro Sensing Module If a Sentro sensing module is removed and replaced with a sensing module of the same type then the Sentro 8 Sensorstation will first request permission to acc...

Page 85: ...low a safe working level 6 5 Latched Relay Message and Relay Reset Use the navigation keypad and scroll through the Base Screens to the Relay Outputs Overview Select the Relay Channel you are interest...

Page 86: ...l of exposure to gas and the nature of the environment Trolex recommends that the sensors should be bump tested with a suitable test gas at regular intervals This should be carried out in accordance w...

Page 87: ...Checkpoint Ensure that the appropriate Health and Safety guidelines and applicable local procedures are followed when handling test gases The ambient temperature should be between 20 and 30 C during t...

Page 88: ...g a Sentro Sensing Module Identify the sensing module to be replaced To prevent a Fault condition being generated when the sensing module is removed it is necessary to Exclude the sensing module From...

Page 89: ...nsing module retainer screw clockwise to secure the sensing module Return the removed sensing module to your local Trolex service agent for service or disposal using the envelope provided or suitable...

Page 90: ...or rModule is replaced If an eModule or rModule is replaced by the same type of sensing module then the existing data would normally be used Overwrite the data if required or if a different type of eM...

Page 91: ...TX9165 UM EN 07 91 7 5 Maintenance and Calibration Log Order Reference TX Serial Number Date Purchased Gas Type Location Date Scheduled Check Fault Recalibrate Replace Modules Return to Trolex Commen...

Page 92: ...nt calibration information 7 7 Protection Grid Periodically check the condition of the stainless steel protection grid and sealing ring on the front cover of the instrument Clean excessive dust accumu...

Page 93: ...e geographic area where it is located The end of its useful life is to be determined by the owner operator of the equipment and not Trolex Ensure that the Sentro 8 is recycled by licenced waste contra...

Page 94: ...General Purpose The Sentro 8 will be supplied as a Sensor Station complete with stainless steel hood battery back up options for RS485 Repeater or Ethernet Converter and audio visual alarm see photo 8...

Page 95: ...an be fitted to boost the incoming data signal and increase the transmission distance of the line 8 5 Ethernet Converter An optional Ethernet Converter can be fitted It is a single port RS485 to TCP I...

Page 96: ...t System drawings will be supplied by Trolex and will indicate where power and data communications need to be connected 8 7 Operation Operation of the Sentro 8 complete with battery back up is simple...

Page 97: ...battery back up in accordance with local procedures Checkpoint The Sentro 8 with a battery back up must be connected to a live mains power supply in order for the Sentro 8 to power up The Sentro 8 and...

Page 98: ...terior casing for cracks penetration water ingress signs of being struck missing parts or other damage 3 Contact Trolex or your local Trolex service agent to arrange for your Sentro 8 and battery back...

Page 99: ...Replace Trolex recommends that the Battery Back up Cells Replace is carried out every 3 years 1 Contact Trolex or your local Trolex service agent to arrange for your cells to be replaced service trole...

Page 100: ...o part of this document may be reproduced in any form or by any means electronic or mechanical including photocopying without express written permission of Trolex All pertinent state regional and loca...

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