Trolex TX9042 User Manual

Programmable sensor controller
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Summary of Contents for Trolex TX9042

  • Page 3: Table Of Contents

    TX9042 User Manual TX9042 Programmable Sensor Controller (PSC) Contents Product Overview SIL Suitability Operating Features Summary of the Verified Application Functional Safety Data Product Options Conditions or Restrictions for 1.3.1 TX9042 PSC Input Module use in SIL Applications Types Proof Test Dimensions System Configuration...
  • Page 4 5.7 .8 Clear the Data in the Datalog 51 6.1.3 TX9042 PSC Battery 5.7 .9 Relay Reset Mode Options - Replace 5.7 .10 Relay Voting 6.1.4 TX9042 PSC - Proof Test 5.7 .11 Relay Operation TX9042 PSC - Repair 5.7 .12 Software Version Maintenance Records 5.7 .13 Self Test...
  • Page 5: Product Overview

    • Simple to use, just four keys to programme the TX9042 PSC, no special software and no software programming skills required • Full functional compatibility with the entire range of Trolex sensors • Up to 32 TX9042 PSC can be connected to a single mine wide data system TX9042-UM-EN-02 www.trolex.com...
  • Page 6: Application

    1.2 Application The TX9042 Programmable Sensor Controller (PSC) is for sensor management and data communications in arduous industrial environments and hazardous areas. It is suitable for use in SIL 1 and SIL 2 applications, in accordance with any conditions or restrictions.
  • Page 7: Product Options

    1.3 Product Options TX9042 PSC General Purpose Mining Ex ia 12 V dc TX9042.55 1.3.1 TX9042 PSC Input Module Types Input Module Description Mining Ex ia Order Code Current - 0 to 20 mA P5423.516 Current - 4 to 20 mA P5423.508...
  • Page 8: Dimensions

    LCD screen 20 characters x 4 lines 6 mm high characters Mounting DIN rail Microprocessor Microprocessor controlled menu operation, with non-volatile data retention and 10 bit analogue to digital conversion (analogue channels) Setpoints 2 per channel plus Fault signal TX9042-UM-EN-02 www.trolex.com...
  • Page 9 TX9042 User Manual Output relays 4 encapsulated reed relays with function programming Relay contact rating 200 V 0.25 A 3 W absolute maximum Checkpoint Circuits switched by the contacts of the output relays MUST emanate from a certified Intrinsically Safe power source and the circuit parameters must be within Intrinsically Safe requirements.
  • Page 10: Electrical Details

    1.6 Electrical Details TX9042.55 - Programmable Sensor Controller (PSC) Supply voltage: 12 V dc +20%/-2.5% at 125 mA Output: Modbus protocol Type of sensor: Flammable Supply current: 125 mA at 12 V Relay: 200 V 0.25 A 3 W absolute maximum...
  • Page 11: Certification

    I M1 Ex ia I Ma 2.1.1 Special Conditions for Safe Use The Programmable Sensor Controller type TX9042 must be mounted in a secondary enclosure as shown on drawing P5423.02 or in an alternative metal enclosure (not light alloys) which is appropriately certified as providing a degree of protection of IP54.
  • Page 12: General Conditions Of Use

    Ex ia I Ma 2.2.1 Conditions of Certification The Programmable Sensor Controller type TX9042 must be mounted in a secondary enclosure as shown on drawing P5423.02 or in an alternative metal enclosure (not light alloys) which is appropriately certified as providing a degree of protection of IP54.
  • Page 13: General Conditions Of Use

    Copies of certificates are available from Trolex. 2.4 South Africa (MASC) Ex Certificate number: MASC M/11-359X Ex Certification code: Ex ia I 2.4.1 Special Conditions for Safe Use The Programmable Sensor Controller type TX9042 must be mounted in a TX9042-UM-EN-02 www.trolex.com...
  • Page 14: General Conditions Of Use

    IP54. 2. Up to 11 RS485 Comms Modules (in separate Programmable Sensor Controllers type TX9042) may be daisy-chained together (i.e. terminals B1 all linked together, terminals B2 all linked together and terminals B3 all linked together). Provided that the number of daisy-chained PSC’s is reduced to 10, these comms lines may be connected to unspecified safe area equipment via...
  • Page 15: Australia/Nz (Anzex)

    Copies of certificates are available from Trolex. 2. Up to 6 RS485 Comms Modules (in separate Programmable Sensor Controllers type TX9042) may be daisy-chained together (ie. terminals B1 all linked together, terminals B2 all linked together and terminals B3 all linked together.
  • Page 16: Functional Safety

    SIL specified for the safety instrumented function to be achieved and maintained, as far as the TX9042 Programmable Sensor Controller (PSC) is concerned.
  • Page 17: Summary Of The Verified Functional Safety Data

    See Section 1.5 of this User Manual 4 to 20 mA input conditioning modules fitted 0.4 to 2 V input conditioning modules fitted To achieve SIL the TX9042 with 4 to 20 mA or 0.4 to 2 V input conditioning modules fitted, must be Product configuration configured to de-energise an output channel relay if...
  • Page 18: Conditions Or Restrictions For Use In Sil Applications

    The hardware failure data for the TX9042 element safety function based on an extensive analysis of field failure data with a 90% single sided confidence limit is shown in Table 2. Parameter Value Dangerous failure rate (λ 2.3E-06 Safe failure rate (λ...
  • Page 19: Proof Test

    TX9042 User Manual 3. The display is for indication only and is not part of the safety function; likewise the RS485 communications are not part of the safety function. 4. The environmental limits are restricted to: • +20 to +40°C •...
  • Page 20: System Configuration Drawing

    3.6 System Configuration Drawing The illustration below shows how the TX9042 is to be used with other system elements. TX9042-UM-EN-02 www.trolex.com...
  • Page 21: Installation

    Installation 4.1 Precautions Do not disassemble the TX9042 PSC whilst in the hazardous area or use a TX9042 PSC that has a damaged housing in the hazardous area. The TX9042 PSC must be installed within a metal protective enclosure to ensure compliance with certification requirements.
  • Page 22: Tools And Test Equipment Required

    No special tools are needed to assemble or install the TX9042 PSC. 4.4 Mechanical Installation The TX9042 PSC is installed on a TS35 low profile DIN rail as follows: Loosen the two securing screws, one each at the end of the TX9042 PSC housing.
  • Page 23: Connections

    TX9042 User Manual 4.5 Connections The terminals are divided on two horizontal planes. The lower level is used for all input connections and the upper level is used for output signals and data connections. Each of the input channels has four connecting terminals available, and these are utilised in accordance with the type of input module that is fitted (refer to the...
  • Page 24 Intrinsically Safe requirements. The unit must be mounted in a protective metal enclosure to comply with Intrinsically Safe requirements. Once input channels have been connected to the TX9042 PSC the channel identification labels MUST be completed. Any changes to the input channels MUST be recorded on the channel identification labels.
  • Page 25: Input Channel Configuration

    Each input conditioning module has calibration and functionality information stored in a non-volatile, EPROM. On power-up, the main processor reads this information and sets-up the channel accordingly. The eight input channels of the TX9042 PSC are configured during manufacture for the operational duty required. This is marked on the identification label on the rear of the housing, refer to Section 4.2 for details.
  • Page 26: Analogue Input Modules

    4.6.1 Analogue Input Modules Type of Input Range Module Ref Connections Current 0 to 20 mA P5423.516 2 wire loop powered 4 to 20 mA P5423.508 Impedance 110 R 3 wire control powered 2 wire remote powered TX9042-UM-EN-02 www.trolex.com...
  • Page 27 TX9042 User Manual Type of Input Range Module Ref Connections Voltage 0 to 2 V P5423.514 0.4 to 2 V P5423.509 0 to 10 V P5423.515 Impedance 100 K Resistance PT100 2 wire Temperature -50 to +200°C P5423.510 Device -50 to +400°C P5423.513...
  • Page 28 P5423.506.01 Acceleration 500 Hz to 10 kHz 0 to 7g (100 mV/g) Load cells, ac P5423.506.02 generators, ac RMS Velocity accelerometers, 15 Hz to 100 Hz velocity sensors 0 to 30 mm/sec & power (100 mV/g) measuring instruments TX9042-UM-EN-02 www.trolex.com...
  • Page 29 TX9042 User Manual Type of Input Range Module Ref Connections Strain Gauge 2 mV/V P5423.520.01 (10 mV FS) 3 mV/V P5423.520.02 (15 mV FS) 10 mV/V P5423.520.03 (50 mV FS) Load cells, 50 mV/V P5423.520.04 pressure (250 mV FS) sensors, bridge 100 mV/V P5423.520.05...
  • Page 30 Type of Input Range Module Ref Connections Digital Dual Input 2 proximity sensors Pulse NAMUR input P5423.523 processing DIN 19234 from proximity sensors, 12 V version photosensors, contacts and pulse generating devices. 2 voltage free contacts On/Off switches TX9042-UM-EN-02 www.trolex.com...
  • Page 31: Digital Input Modules

    TX9042 User Manual 4.6.2 Digital Input Modules Digital input conditioning modules can be individually programmed into seven distinct operating modes: Pulse Counter Pulse Interval Pulse Frequency Slip Frequency Differential Slip Differential Frequency Frequency Digital Level (On/Off) Refer to Section 5.9.7 for details of Mode Setting for a Digital Input Module.
  • Page 32 2 voltage free contacts Failsafe contacts with series diode On/Off switches connected in series with a diode to give combined open circuit/short circuit sensor connection protection Digital (Vortex +5 V output airflow sensor) TTL input P5423.524 TX5925 Vortex Airflow Sensor TX9042-UM-EN-02 www.trolex.com...
  • Page 33: Display Of Connection Details

    TX9042 User Manual 4.6.3 Display of Connection Details For convenience, input terminal connection details for any channel can be displayed on the LCD screen. Refer to Section 5.9.2.21 for details. 4.6.4 Replacing an Input Module The individual channel input conditioning...
  • Page 34: Cable Distance For Voltage

    This technique is frequently used to monitor differential temperature, differential pressure and differential speed. Checkpoint It is important that the two sensors or input signals are calibrated to the same operating parameters. TX9042-UM-EN-02 www.trolex.com...
  • Page 35: Setup And Calibration

    Setup and Calibration 5.1 Controls and Indicators The programming and setting routines for the TX9042 Programmable Sensor Controller (PSC), have been designed for utmost simplicity and the programming system is completely menu driven. There is no special software programme or data input terminal, a PC is not necessary and no computer programming knowledge is required.
  • Page 36 Scroll Down is the bottom key - D The use of these keys is abbreviated to L, R, U and D throughout this User Manual. Checkpoint The TX9042 PSC data memory is permanent. All settings are retained even in the event of power failure. TX9042-UM-EN-02...
  • Page 37: Power-Up

    TX9042 User Manual 5.2 Power-up When first switched on, the processor will initialise all the default values unless new values have previously been programmed. The LCD screen will display the version number of the software currently installed. 5.3 Signal Display...
  • Page 38: Reviewing The Input Module Configuration

    Press U or D to navigate the cursor to the selected channel. Press R to confirm Close-up 1 - (only possible if an input module is fitted on that channel). Press R again for Close-up 2. TX9042-UM-EN-02 www.trolex.com...
  • Page 39: Close-Up 1 Information

    TX9042 User Manual 5.5.1 Close-up 1 Information Display 5.5.1.1 Close-up 1 Display for an Analogue Input Module Channel identification - 1 to 8. Type of input module (PT100) - this changes to indicate that a channel Setpoint has been exceeded, SP1 and/or SP2.
  • Page 40 Signal exceptionally High (ie. 21 mA) Scale Signal Over normal scale value (ie. 20.01 mA) Normal Normal operating range (ie. 0.4 to 2 V) Minimum Signal Under normal minimum value (ie. 3.99 mA) (applies to Signals with offset zero only) TX9042-UM-EN-02 www.trolex.com...
  • Page 41 TX9042 User Manual Signal exceptionally Low (ie. 3.8 mA). Checkpoint Digital signals are, by their nature, self monitoring, so this facility does not appear on digital channels. 5.5.1.2 Close-up 1 Display for an Digital Input Module Channel identification (1 to 8).
  • Page 42: Close-Up 2 Information

    The previous Lowest signal value recorded since last reset. The value of Setpoint 2. The value of Setpoint 1. 24 hour clock. Press R to return to Close-up 1. Press L to escape and return to the Signal Display. TX9042-UM-EN-02 www.trolex.com...
  • Page 43 TX9042 User Manual 5.5.2.2 Close-up 2 Display for a Digital Input Channel Checkpoint Not applicable for the Digital level mode. Channel identification (1 to 8). Programmed mode of the digital input module (Pcount). This changes to indicate that a channel setpoint has been exceeded (ie.
  • Page 44: Menu Of Function

    The special software required for this purpose is included as part of the SCADA graphic package provided. User programmed operating values are permanently retained. TX9042-UM-EN-02 www.trolex.com...
  • Page 45: Main Menu

    TX9042 User Manual 5.7 Main Menu All the operating functions can be programmed through the keypad by entering the Main Menu. 5.7.1 Entering the Menu Press L to enter the Main Menu. Cursor arrows will indicate the first of the function options available in the Main Menu.
  • Page 46: Escape/Return

    Menu sequence. Each press of L will revert the screen one step back until the Main Menu is reached. The screen will progressively step back at 5 second intervals if no keys are pressed. TX9042-UM-EN-02 www.trolex.com...
  • Page 47: Communication Setup

    Press U or D to set the value or mode. Press R to confirm the value or mode. TxOn - this is the delay between the TX9042 PSC enabling the transmission line and sending data. TxOff - this is the delay between the end of the received data and disabling of the receive buffer.
  • Page 48 Scrolling display of incoming data stream. Data stream can be stopped and started for closer analysis. Press U to Stop data stream Press D to Start data stream Checkpoint Communication data protocol information and additional application data is available from the Trolex Technical Department. TX9042-UM-EN-02 www.trolex.com...
  • Page 49: Clock

    If more than five invalid entries are attempted, access to the Main Menu will be denied for 30 mins. If you require this feature to be disabled, contact your local Trolex service agent or the Trolex Product Support Department: service@trolex.com TX9042-UM-EN-02 www.trolex.com...
  • Page 50: Interval Period Of The Datalog

    5.7.6 Interval Period of the Datalog Each channel of the TX9042 PSC contains a 26,000 point data logging system. This can record the channel number and the Time and Date that an event occurs. The rate or time interval of recording data can be programmed and data is recorded on a first-in/first-out rolling log.
  • Page 51: Clear The Data In The Datalog

    TX9042 User Manual Press R to return to the Channel List. Supplementary information is displayed momentarily where appropriate: 5.7.8 Clear the Data in the Datalog Press R to confirm the instruction to clear the Data in the Datalog. TX9042-UM-EN-02 www.trolex.com...
  • Page 52: Relay Reset Mode Options

    Rise: Any latched relays will be reset only as the reset input Rises (opening contact), and the channel input signal has receded from the programmed setpoint level. TX9042-UM-EN-02 www.trolex.com...
  • Page 53: Relay Voting

    Pulse Counting channel. 5.7.10 Relay Voting Each channel of the TX9042 PSC has two adjustable setpoint signals. Any, or all, of these can be matrix programmed to operate any, or all, of the four output relays, R1, R2, R3 and R4.
  • Page 54 The programming of this function is completely flexible. Any number of the setpoint signals can be matrixed to a single relay, enabling the selection of the Voting function from any two setpoint signals up to sixteen setpoint signals. TX9042-UM-EN-02 www.trolex.com...
  • Page 55: Relay Operation

    LCD screen, this includes the product reference, software version number, serial number, log data memory and input board type. 5.7.13 Self Test This enables all the internal functions of the TX9042 PSC to be tested. TX9042-UM-EN-02 www.trolex.com...
  • Page 56: Display Cycling

    Press U and D to increase or decrease the Contrast setting. Press R to confirm the selected setting. Checkpoint 1 is the minimum contrast setting and 15 is the maximum contrast setting. TX9042-UM-EN-02 www.trolex.com...
  • Page 57: Channel Function And Calibration

    TX9042 User Manual 5.9 Channel Function and Calibration The operating characteristics of each channel can be individually programmed. The menu procedure is the same for all eight channels but the contents of the menu will be different for Analogue input modules and Digital input modules.
  • Page 58: Power On Delay (Pod)

    In a situation where the alarm signals need to be inhibited until after an operation has occurred, the Ext POD feature can be used. A signal on terminal A35 prevents the internal POD timer from operating, at power on, until it is removed. TX9042-UM-EN-02 www.trolex.com...
  • Page 59 TX9042 User Manual Once the unit is powered up, a signal on terminal A35 can be used to inhibit SP1 and SP2. On release of the signal, SP1 and SP2 are further inhibited by the channel POD period. External POD can be selected as Off, High or Low.
  • Page 60: Scale And Display Settings

    The contents of the menu for a digital input module will vary in relation to which of the sensor operating modes it is set into. See the Menu of Functions for individual menu listings. Refer to Section 5.6 for details. TX9042-UM-EN-02 www.trolex.com...
  • Page 61 TX9042 User Manual 5.9.2.1 Reset Peak The previous maximum value (Peak) and minimum value (Low) that the signal has reached since the last occasion that it was reset. Dangerously High or Low sensor conditions may have occurred previously and this feature enables historic trends to be examined.
  • Page 62 5.9.2.3 IPF 1 and IPF 2 Some modules of a Digital input module will show IPF 1 (Input Pre-scale Factor no.1) in the menu. The modes that use two input counting devices will also show IPF 2 relating to the second input. TX9042-UM-EN-02 www.trolex.com...
  • Page 63 TX9042 User Manual Incoming pulses can be multiplied by a selectable pre-scale factor. This is useful for converting pulse rates from target wheels, flow sensors and measuring devices to the required scale factor, or for conversion to the appropriate engineering units.
  • Page 64 For maximum accuracy, sampling takes place at the front end, prior to pre-scaling. Press U or D to navigate to the value required. Press R to confirm the value selected. Checkpoint Analogue levels are averaged between samples. Pulse frequencies are averaged between samples. TX9042-UM-EN-02 www.trolex.com...
  • Page 65 TX9042 User Manual 5.9.2.5 Units A menu of more than 35 standard engineering units is available for adding on to the signal value display to represent the actual parameter being measured, ie. bar, mA, m/sec, °C, etc. Checkpoint Where a temperature input module is fitted, the choice will be limited to °C, °F or...
  • Page 66 The other modes available, Latch, Toggle and Pulse may be utilised to suit the control function. Press U or D to navigate to Single or Cycle as required. Press R to confirm the selection. TX9042-UM-EN-02 www.trolex.com...
  • Page 67 TX9042 User Manual Checkpoint The Count display can be reset by an impulse on input 2 or through the keypad. Checkpoint Any relays that are programmed to Latch can be reset by an impulse on input Terminal 36 or through the keypad.
  • Page 68 Bidirectional Pulse on Input 2 Keypad Checkpoint If the count value to be reset has exceeded, and so activated, a programmed Setpoint value, the setpoint output will reset at the same time. Refer to Section 5.9.3.6 for details. TX9042-UM-EN-02 www.trolex.com...
  • Page 69 TX9042 User Manual Checkpoint Any relays that are programmed to Latch will not be reset. Refer to Relay Reset Mode Options in Section 5.7 .9 for details. 5.9.2.9 Lower 5.9.2.10 Upper Independently adjustable, these two items are closely inter-related. They set the desired Lower limit and Upper limit of the display reading for a given input signal.
  • Page 70 Cable length and size of conductor cores can also affect the calibration of the system. The display can be calibrated, after installation, to concur with a known temperature applied to the sensor being used. TX9042-UM-EN-02 www.trolex.com...
  • Page 71 TX9042 User Manual Press R to confirm the calibration mode. The screen will show the apparent temperature being measured by the sensor. Press U or D to increment the value displayed to concur with the temperature measured at the sensor.
  • Page 72 TX6022 Liquid Flow Sensor. The TX6022 Liquid Flow Sensor will be supplied with this calibration constant, which is then entered into the TX9042 PSC. Press R to enter Pressure Constant mode. Press D to navigate the cursor along the digits to the required digit.
  • Page 73 TX9042 User Manual Press U to increment the digits to the required value. Press R to confirm the values selected. 5.9.2.15 Flow Constant (Flow Input Module) This function only appears in the menu when a flow input module is fitted for use with a TX6022/3 Liquid Flow Sensor.
  • Page 74 Press R to confirm the value selected. Checkpoint This function can also be used to offset the reading from zero, to compensate for any system errors. TX9042-UM-EN-02 www.trolex.com...
  • Page 75 TX9042 User Manual 5.9.2.18 Span (PSU/Straingauge Module) This function only appears in the menu when a PSU/Straingauge module is fitted. Press R to enter Span mode. Press U or D to increment the displayed value to a value that matches the measured reading on the straingauge.
  • Page 76 Press U to increment the digits to the required value. Press R to confirm the values selected. 5.9.2.21 Connections Terminal identification details are listed on the display for a particular channel input electrical connections. Press U or D to navigate through the data. TX9042-UM-EN-02 www.trolex.com...
  • Page 77 TX9042 User Manual 5.9.2.22 Run Speed When a digital input is set to Slip Frequency mode, an additional menu item called Run Speed will be available. The Slip Frequency mode is most often used for monitoring the rotational speed of...
  • Page 78 Input 2. If the count value to be reset has exceeded, and therefore activated a programmed Setpoint value, SP1 and/or SP2, the Setpoint Output will reset at the same time. Refer to Section 5.9.3.6 for details. TX9042-UM-EN-02 www.trolex.com...
  • Page 79: Setpoint Characteristics

    TX9042 User Manual Any relays that are programmed to latch will not be reset. Refer to Relay Reset Mode Options in Section 5.7 .9 for details. 5.9.3 Setpoint Characteristics Each of the eight channels has two Setpoint signals or alarm points, SP1 and SP2.
  • Page 80 A high value of hysteresis can also be used as a control function when controlling the operation of pumps. The pump will start at high level (SP1) and continue pumping until low level is reached at the bottom of the hysteresis band. TX9042-UM-EN-02 www.trolex.com...
  • Page 81 TX9042 User Manual 5.9.3.3 Alarm (Rising/Falling) The setpoint signals can be arranged to occur on a rising input signal or a falling input signal. For example, when monitoring excess vibration or high gas concentration, the setpoint signals can be set to activate on a rising signal to give a failsafe alarm function.
  • Page 82 On Delay and/or Setpoint Off Delay that is programmed. Refer to Sections 5.9.3.4 and 5.9.3.5 for details. Checkpoint The reset point will also be influenced by any hysteresis value that is programmed. Refer to Section 5.9.3.2 for details. TX9042-UM-EN-02 www.trolex.com...
  • Page 83 TX9042 User Manual Latch Until Reset - the Setpoint signal will go Low when the input signal exceeds the Setpoint value and latch until reset. T1 = any Setpoint On Delay that is programmed. Refer to Section 5.9.3.4 for details.
  • Page 84 5.9.3.7 Relays The TX9042 PSC has four common output relays, R1, R2, R3 and R4. Any setpoint signal can be assigned to operate any one or all of the relays by selecting Yes or No in each case. This enables alarm status groupings, selective shutdown routines and logic elementary functions to be created.
  • Page 85: Fault Signal Alarm

    TX9042 User Manual 5.9.4 Fault Signal Alarm Assignation Each of the 8 channels on the TX9042 PSC has a Fault Output Signal which triggers when a system fault is detected by the processor. Refer to Section 5.5 for details. The fault types are: •...
  • Page 86: Threshold Acceptance Level

    Press U or D to navigate to the Threshold Acceptance Level value required. Press R to confirm the value selected. TX9042-UM-EN-02 www.trolex.com...
  • Page 87: Keycode Security For Each

    Checkpoint If more than three invalid entries are attempted, access to the channel function programming will be denied for 30 mins. If you require this feature to be disabled, contact the Trolex Product Support Department: service@trolex.com TX9042-UM-EN-02 www.trolex.com...
  • Page 88: Mode Setting For A Digital

    Pulse Processing Format, there are seven modes available. Press R to confirm the selection. Pulses can be counted from contacts, NAMUR sensors or photosensors. Input 1 is normally used for counting and Input 2 for reset or count steering control. TX9042-UM-EN-02 www.trolex.com...
  • Page 89 TX9042 User Manual 5.9.7.1 Pulse Counter Pulses entering on Input 1 will be totalled. Setpoint count values can be programmed. Counting can be Upcount, Downcount or Bidirectional. Refer to Section 5.9.2.8 for details. Close-up 1 Display Refer to Section 5.5.1 for details.
  • Page 90 Input 1. The bottom end of the bar graph (the estimated minimum interval period) is programmed by the Lower setup. The top end of the bar graph (the estimated maximum interval period) is programmed by the Upper setup. TX9042-UM-EN-02 www.trolex.com...
  • Page 91 TX9042 User Manual 5.9.7.3 Pulse Frequency The frequency level or pulse rate on Input 1 is measured. Setpoint levels are determined as an Absolute frequency. Feed rate monitoring, speed monitoring, flow rate, etc. Close-up 1 Display Refer to Section 5.5.1 for details.
  • Page 92 T1 - incoming frequency or pulse rate on Input 1. Run - the programmed Run frequency. % - the percentage difference between Input 1 and Run. Bar Graph - also gives magnitude comparison of the percentage difference between Input and Run. TX9042-UM-EN-02 www.trolex.com...
  • Page 93 TX9042 User Manual 5.9.7.5 Differential Slip Frequency The frequency level or pulse rate on Input 1 is compared with the frequency level or pulse rate on Input 2. Setpoint levels are determined as an absolute frequency difference. Close-Up 1 Display Additional dynamic information is displayed in this mode.
  • Page 94 T1 - incoming frequency or pulse rate on Input 1. Run - the programmed Run frequency. % - the percentage difference between Input 1 and Input 2. Bar Graph - Magnitude comparison of the frequency difference between Input 1 and Input 2. TX9042-UM-EN-02 www.trolex.com...
  • Page 95 TX9042 User Manual 5.9.7.7 Digital Level Inputs from simple On/Off switches, voltage free contacts, thermostats, pressure switches, limit switches and NAMUR proximity switches. Each digital input module will accept two input switches, one on Input 1 and one on Input 2, each of these inputs can be programmed independently for most of the standard functions.
  • Page 96: Setting A Digital Failsafe

    Each digital input module will accept two input switches, one on Input 1, the other on Input 2 and each of these inputs can be programmed independently for most of the standard functions. TX9042-UM-EN-02 www.trolex.com...
  • Page 97 Short Circuit Detection A diode connected in series with input contacts at the remote point will enable the TX9042 PSC to detect and identify an open short circuit connection in the sensor connecting cable. An open circuit cable connection such as a...
  • Page 98 The module can be programmed to individually identify both short circuit and open circuit conditions. If a resistor is also incorporated into the remote contact connection, the TX9042 PSC will be able to exclusively identify both failure modes of the connecting cable conditions. Signal Display Input 1 - Input 2 Refer to Section 5.3 for details.
  • Page 99: Channel Display Mode

    TX9042 User Manual Close-Up 1 Display Refer to Section 5.5.1 for details. Press U or D to select the resistor state of Yes or No as required. Press R to confirm the selection. 5.9.9 Channel Display Mode Where a channel is out of operation or a system Fault has been diagnosed, the channel can be de-activated.
  • Page 100: Datacommunications

    RS485 (55) TX9042 Module Data Protocol - the communications format setup can be individually programmed through the keypad for PC system compatibility and data protocol information is available from the Trolex Technical Department. Refer to Section 5.7 .3 for details. TX9042-UM-EN-02 www.trolex.com...
  • Page 101 Please contact the Trolex Sales Team for further information and advice on suitable safety barriers. sales@trolex.com Up to 11 RS485 Communications Modules...
  • Page 102: Maintenance

    6.1.2 6 months TX9042 PSC Battery Replace 6.1.3 5 years 3 months TX9042 PSC - only to be carried out if the TX9042 is installed in a SIL rated Proof Test 6.1.4 system. 12 months 6.1.2 TX9042 PSC - Check...
  • Page 103 TX9042 PSC are secure within the terminals. Tighten any loose terminals as necessary. 10. If any part of the TX9042 PSC shows any signs of damage, defect, deformation or missing parts, immediately remove it from service and replace it with a working TX9042 PSC.
  • Page 104: Tx9042 Psc Battery

    Remove the TX9042 PSC from service and replace it with a working TX9042 PSC. 2. Return the TX9042 PSC to your local Trolex service agent for battery replacement and testing. 3. After the completion of all maintenance, update the maintenance records.
  • Page 105 How load or stimulus is applied to the sensor or detector, is the responsibility of the person responsible for SIL in the location where the TX9042 is installed. The determination of the correct load or stimulus, and how this is applied to the sensor or detector is beyond the scope of this User Manual.
  • Page 106 If the IS meter reading fails to fluctuate, immediately remove the TX9042 PSC from service and replace it with a working TX9042 PSC. Return the defective TX9042 PSC to Trolex for repair and testing. 8. Remove the load or stimulus from the sensor or detector.
  • Page 107: Tx9042 Psc - Repair

    TX9042 PSC and contact your local Trolex service agent to arrange repair. Checkpoint If your TX9042 PSC is used in a SIL rated system it can only be repaired by Trolex. 6.3 Maintenance Records Implement a planned preventative maintenance process and keep good maintenance records.
  • Page 108: Maintenance Log

    6.4 Maintenance Log Order Reference: TX9042 Programmable Sensor Controller Serial Number: Date Purchased: Channel 1: Channel 2: Channel 3: Channel 4: Channel 5: Channel 6: Channel 7: Channel 8: Location: Maint Return Date Fault Action Comments Task No. to Trolex TX9042-UM-EN-02 www.trolex.com...
  • Page 109: Disposal

    TX9042 User Manual Disposal Part of the ethos of Trolex is sustainable design. TX9042 PSC contains materials that can be recovered, recycled and reused. At the end of its useful life ensure that the TX9042 PSC is recycled in accordance with local laws and bylaws for the geographic area where it is located.
  • Page 110: Disclaimers

    When devices are used for applications with technical safety requirements, the relevant instructions must be followed. Trademarks © 2014 Trolex® Limited. Trolex is a registered trademark of Trolex Limited. The use of all trademarks in this document is acknowledged. Document History Issue 01...

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