8500940C TT236-0600 User`s Manual
Contents
1. TB3 TWO WIRE OUTPUT 2 4 AN LOOP H a 12 36VDC d 4 420 J EARTH 16 BIT DAC I GROUND rh RLoap LOOP A POLARITY TRI STATE i PROTECTION Gp BUFFERS i rweneanenowrerna yay ScowECTIONS Ane USED i CONNECTIONS TO C TERMINALS WIRING CONNECTIONS 3 3V f lt a i 3 0V i ISOLATED FLYBACK CONVERTER lt gt 3 3V t Ja T i aif 3 3V i p m OSC b ISOLATED OUTPUT This transmitter uses a microcontroller and a high resolution A D to convert the input signal to a serial digital pulse stream that is then isolated via a pulse transformer and transmitted to a current loop DAC Power for the isolated input side of the circuit is provided via an isolated flyback converter that operates in parallel with the output loop Setup involves selecting the input type Current or Voltage selecting a filter level and scaling the input range endpoints to 4mA and 20mA at the output Output scaling can also be done in reverse to produce a reverse acting output signal The maximum over range output signal is approximately 24mA the under range signal is 3 3mA Refer to the block diagram above to gain a better understanding of how this transmitter works The input USB and output power circuits are isolated from each other The USB port ground is common to the input circuit ground The USB port ground of most PC s is also common to the USB cable shield and2. INPUT SIDE INPUT SIDE FRONT OUTPUT SIDE O L WIRE CURRENT TO TB1 WROT Se ue TERMINALS q 7 SHIELDED CABLE 1 2 7 SE T81 DC CURRENT ONLY TB2 DCCURRENT amp e INPUT OPT SHLD GND TERMINALS q MODEL TT236 0600 7 WIRE VOLTAGE TO TB2 TB2 smeren caste DO VOLTAGE keel DC VOLTAGE ONLY pc PD gt 3 _ _ gt VOLTAGE V Volts JL 4 OPT SHLD GND 2 WIRE ONLY INPUTS ARE ISOLATED FROM THE OUTPUT AN INPUTS SHARE COMMON AND ARE NOT ISOLATED FROM EACH OTHER ONLY ONE INPUT CURRENT OR VOLTAGE L MAY DRIVE THE OUTPUT AT ONE TIME RE fal DIN RAIL SPRING CLIP Li DIN RAIL SPRING CLIP Acromag Inc Tel 248 295 0880 9 http www acromag com Model TT236 0600 Output Power Connections This transmitter has an ANSI ISA Type 2 output in which the unit s power and output signal share the same two leads and the transmitter output has a floating connection with respect to earth ground Connect a DC power supply and load in series in the two wire loop as shown in the drawing below Two Wire DC I V Transmitter w USB e Output connections are not polarized The output and designations are for reference only with current normally input to Output and returned via Output current sinking Loop supply voltage should be from 12 32V DC with the minimum voltage level adjusted to supply over range current to the load plus 11V MIN ac
3. ACCESSORIES Two Wire DC I V Transmitter w USB Software Interface Package USB Isolator USB A B Cable OQO USB A mini B Cable Software Interface Package Configuration Kit Order TT SIP e USB Signal Isolator e USB A B Cable 4001 112 e USB A mini B Cable 4001 113 e Configuration Software CDROM 5040 944 This kit contains all the essential elements for configuring TT family Transmitters Isolation is recommended for USB port connections to these transmitters and will block a potential ground loop between your PC and a grounded current loop A software CDROM is included that contains the Windows software used to program the transmitter USB Isolator Order USB ISOLATOR e USB Signal Isolator e USB A B Cable 4001 112 e Instructions 8500 900 This kit contains a USB isolator and a 1M USB A B cable for connection to a PC This isolator and cable are also included in TT SIP see above USB A B Cable Order 4001 112 USB A B Cable 4001 112 This is a 1 meter USB A B replacement cable for connection between your PC and the USB isolator It is normally included with the TT SIP Software Interface Package and also with the isolator model USB ISOLATOR USB A mini B Cable Order 4001 113 e USB A mini B Cable 4001 113 This is a 1 meter USB A miniB replacement cable for connection between the USB isolator and the TT transmitter It is normally included in TT SIP Note that software for all TT Series models is
4. The TT236 06x0 is an ANSI ISA Type II transmitter designed to interface with DC Current 0 20mA 4 20mA or Low Voltage DC 0 5V 0 500mvV sensors isolate the input signal and modulate a 4 20mA current signal to drive a two wire current loop This unit is setup and calibrated using configuration software and a USB connection to Windows based PC s Windows XP and later versions only The unit provides an Means Refer to Users Manual adjustable input range input isolation and variable input filtering this manual for additional information Key Features e Digitally setup and calibrated w Windows software via USB e Thin 12 5mm wide enclosure for high density DIN rail mounting e Supports both process current input and DC voltage input on same model e DC Current Input 1 for 0 20mA 4 20mA 0 11 17mA and 1mA e DC Voltage Input 2 for 0 5V and 0 500mV e High measurement accuracy and linearity with 16 bit conversion e Adjustable input ranges e Extra output connections support optional sourced output wiring e Variable Input Filter Adjustment e Normal or Reverse Acting output e Convenient two wire loop power with non polarized output connections e Namur compliant loop current e Wide ambient temperature operation e Thoroughly Tested and Hardened For Harsh Environments e CE Approved e Includes UL cUL Class 1 Division 2 Approvals Application This transmitter is designed for high density mounting on T type DIN rails Units
5. 50000 TB1 1 part in 52220 Oto 20mA 32768 to 58878 or 1 part in 25000 TB1 1 part in 26110 4 to 20mA 37990 to 58878 or 1 part in 25000 1 part in 20888 Oto 11 17mA 32768 to 47350 or 1 part in 25000 1 part in 14582 1mA to 1mA 11880 to 53656 or 25000 or 1 part in 50000 1 part in 41776 0 5V to 0 5V 26214 or 1 part in 52428 425000 or 1 part in 50000 ra ee NNNM 0 to 500mV DC 1 part in 26214 1 part in 25000 mr a ae This unit allows a portion of the nominal input range to be rescaled to the 4 20mA output However your effective input resolution will be proportionally diminished as you reduce the input range below its nominal range The actual I O resolution of this transmitter will be the lowest resolution of either the input or the output output DAC is 1 part in 43690 for 4 20mA Input Filter Normal mode filtering plus digital filtering optimized and fixed per input range within the X A ADC Noise Rejection Common Mode 138dB 9 60Hz typical with 100Q input unbalance Optional AC Current Sensor Model 5020 350 For AC Current Input to TB1 This sensor can be connected to TB1 of this model for AC current sensing and is a toroidal instrument transformer that converts the sinusoidal 50 60Hz AC current signal into a low level DC milliampere signal of O to 11 17mA The input AC current range is a function of the number of turns placed through the toroid as shown in Table 2 below This sensor is isolated and requires no cal
6. 90 0 50 6 ETY n 114 5 4 51 m i S DIMENSIONS ARE IN MILLIMETERS INCHES DIN Rail Mounting amp Removal Acromag Inc Tel 248 295 0880 Refer to the following figure for attaching and removing a unit from the DIN rail A spring loaded DIN clip is located on the input side bottom The opposite rounded edge at the bottom of the output side allows you to tilt the unit upward to lift it from the rail while prying the spring clip back with a screwdriver To attach the module to T type DIN rail angle the top of the unit towards the rail and place the top groove of the module over the upper lip of the DIN rail Firmly push the unit downward towards the rail until it snaps into place To remove it from the DIN rail first separate the input terminal blocks from the bottom side of the module to create a clearance to the DIN mounting area You can use a screwdriver to pry the pluggable terminals out of their sockets Next while holding the module in place from above insert a screwdriver into the lower path of the bottom of the module to the DIN rail clip and use it as a lever to force the DIN rail spring clip down while pulling the bottom of the module outward until it disengages from the rail Then simply lift it from the rail ht
7. Inc Tel 248 295 0880 Two Wire DC I V Transmitter w USB After executing the Acromag Configuration software for this model the screen shown at left will appear if you have not already connected to your transmitter via USB note fields are blank under these conditions Connect your PC to the unit via USB and its model serial information will appear in the Device scroll field as shown in the second screen at left If you are connected to more than one unit via a USB hub you can use the Device scroll field to select another unit using the serial information suffix of the Device Model to discern one unit from another Once you have selected a device click the Open button to open communication with the unit After clicking Open the selected unit s Model Serial Number Manufacturer and connection Status will be displayed as shown in the first screen of the next page 17 http www acromag com Model TT236 0600 Configuration Y 11236 Configuration Software Communication Setup 1 0 Config Test Calibration DEVICE SELECT Device ISEEENITTNEETESE v Model 7236 0600 SerialNumber 1234567 Manufacturer Acromag Inc Status Device opened successfully Y 11236 Configuration Software Communication Setup I O Config Test Calibration CONFIGURE I O Get I O Config Input Range X Input Filtering Medium 150m5 w Status No Error YO Scaling 0 000 mA 4mAOut 20 000 mA 20mAOut Send
8. SIDE 24VDC POWER SUPPLY lt I zi 4 DCS PLC SOURCING 24VDC TB3 INPUT CARD P 24VDC OUTPUT i 6 LOOP TWISTEDPAIR DCS PLC SINKING TERMINALS 5 LOOP Jeecocoooco e OR coooco INPUT CARD x i lu ES gt MODEL TT2XX 0600 TB4 RCV COMMON RCV TERMINALS e i SOURCING INPUT RECEIVER SINKING INPUT RECEIVER The 24V DC Excitation is The 24V DC Excitation is Provided Provided by the Card by a Separate Power Supply N WARNING For compliance to applicable safety and performance standards the use of twisted pair output wiring is recommended Failure to adhere to sound wiring and grounding practices as instructed may compromise safety performance and possibly damage the unit TIP Ripple amp Noise Power supply ripple at 60Hz 120Hz is normally reduced at the load by the transmitter but additional filtering at the load can reduce this ripple further For large 60Hz supply ripple connect an external 1uF or larger capacitor directly across the load to reduce excessive ripple For sensitive applications with high speed acquisition at the load high frequency noise may be reduced significantly by placing a 0 1uF capacitor directly across the load as close to the load as possible TIP Inductive Loads If the two wire current loop includes a highly inductive load such as an I P current to pressure transducer this may reduce output stability In this case place a O 1uF capacitor directly a
9. available free of charge online at www acromag com Acromag Inc Tel 248 295 0880 26 http www acromag com Model TT236 0600 SPECIFICATIONS Model Number Model TT236 0600 Signal Transmitter Isolated DC I V Input Two Wire Loop Powered CE Approved Includes UL cUL Class 1 Division 2 approvals Custom calibration to your specifications can be added as a separate line item at time of purchase Input This model has separate inputs for current and voltage but only one input current or voltage can drive the output loop at one time DC current is input at TB1 terminals and DC voltage at TB2 terminals only Acromag Inc Tel 248 295 0880 Two Wire DC I V Transmitter w USB The TT236 model prefix denotes a combination DC current and DC voltage input type of the DIN Rail Mounted Series 230 Thin Transmitter family The trailing 0600 model suffix denotes 2 wire loop power with CE and UL cUL Class 1 Division 2 Approvals Optional factory calibration to your own specifications is ordered as a separate line item at time of purchase and on a per unit basis Factory calibration will require the specification of nominal input range current or voltage scaled input range Zero current or voltage and scaled input range Full Scale current or voltage You can also specify a normal or reverse acting output and a filter level You can obtain form 8500 858 for specifying this calibration from our web site at www acromag
10. clamping capacitive filtering and series resistance Note Only one input channel current or voltage may drive the output of this unit at one time Analog to Digital Converter A D Input utilizes a 24 bit X A A D converter Its signal is normalized to a bipolar range count of 25000 see Resolution below 27 http www acromag com Model TT236 0600 Input Two Wire DC I V Transmitter w USB Input Resolution The A D of this model divides the input into a number of parts that can be calculated via the expression Vin Gain 1 25 32768432768 Vin is the DC input voltage of this model or DC Current 24 90 for current ranges The Gain 2 for all input ranges except 1mA where Gain 32 To simplify I O scaling the resultant A D count is then normalized using a bipolar conversion scheme of 25000 corresponding to 100 of input range That is 10096 0 and 100 are represented by decimal values 25000 0 and 25000 respectively Thus the effective input resolution for a given range will be the lowest resolution of either the A D or its normalized value An indication of relative input resolution is expressed as the number of parts between the input range low and high endpoints shown in Table 1 the shaded value is the effective resolution of the input equivalent to the lowest of the A D resolution or normalized range resolution Table 1 Input Resolution Per Nominal Range 20mA to 20mA 6658 to 58878 or 25000 or 1 part in
11. drop in the load To compute the IR drop be sure to use a current level that considers the over scale current up to 24mA Loop Power Supply Voltage Make sure your voltage level is at least 11V plus 0 020 load resistance Ideally it should be great enough to drive the 24mA over range current into your load i e up to 11V 0 024 Rload assuming line drop is negligible and the maximum possible over range is considered Always apply power to the transmitter output loop even when connected to USB 3 Connect to PC via USB Refer to USB Connections of page 11 and connect the transmitter to the PC using the USB isolator and cables provided in the Configuration Kit TT SIP Connect Input Connect PC USB Optional Calibrate I O Now that you have made your input output power and USB connections and applied power to your loop you can execute the TT236Config exe software to begin configuration of your unit software is compatible with XP or later versions of the Windows operating system Acromag Inc Tel 248 295 0880 16 http www acromag com Model TT236 0600 Configuration 11236 Configuration Software Communication Setup 1 0 Config Test Calibration DEVICE SELECT Device Model Serial Number Manufacturer Status 11236 Configuration Software Communication Setup 1 0 Config Test Calibration DEVICE SELECT Device MEESE Model Serial Number Manufacturer Status Acromag
12. earth ground Input sensors could be grounded or ungrounded For this reason it is recommended that USB signals be isolated when connected to a PC to prevent a ground loop from occurring between the PC earth ground and a grounded input sensor which would have the negative affect of pulling the input bias supply to ground clipping the negative portion of the bipolar input range 22 http www acromag com Model TT236 0600 TROUBLESHOOTING Diagnostics Table Before attempting repair or replacement be sure that all installation and configuration procedures have been followed and that the unit is wired properly Verify that power is applied to the loop and that your loop power supply voltage is sufficient to supply over scale current into the load MIN 0 020 Rload plus 11V MIN at the unit terminals plus any line drop If your problem still exists after checking your wiring and reviewing this information or if other evidence points to another problem with the unit an effective and convenient fault diagnosis method is to exchange the questionable unit with a known good unit Acromag s Application Engineers can provide further technical assistance if required Repair services are also available from Acromag Acromag Inc Tel 248 295 0880 POSSIBLE CAUSE Two Wire DC I V Transmitter w USB POSSIBLE FIX Software Does Not Detect Unit or Communication Setup Screen is Blank USB is not connected between unit
13. in common to the input circuit ground of this transmitter Acromag Inc Tel 248 295 0880 12 http www acromag com Model TT236 0600 Two Wire DC I V Transmitter w USB USB Connections This transmitter is setup configured amp calibrated via configuration software that runs on a Windows based PC connected to the unit via USB Windows XP or later required Refer to the following drawing to connect your PC or laptop to the transmitter for the purpose of reconfiguration and calibration using this software TT SERIES USB TRANSMITTER CONNECTIONS USED FOR CONFIGURATION AND CALIBRATION OF THE TRANSMITTER IN A SAFE OR ORDINARY LOCATION a PERSONAL COMPUTER i RUNNING WINDOWS OS ANY MODEL TT2XX TRANSMITTER HOST PC RUNNING ACROMAG CONFIGURATION SOFTWARE USB MiniB MALE O USB MiniB Sock ml CABLE Model 4001 113 iniB Socket Front Panel of Module 2 Note Output Power to Transmitter must be applied before USB connection See Output Power Connections fees HOSI TO HOST USB PORT US E a m vy o e pu USB A MALE HOST USB SERIAL PORT CONNECTOR Acromag i AT BACK OF PG 1 METER CABLE i U DEVICE CONNECT i l a 0 USB B MALE c5 ome f
14. input the A D needs 2 input samples to charge to its final level Check power voltage level Make sure it is at least 11V plus 0 020 Rload If transmit distance is long then it must have added voltage to support the IR drop in the wire Ideally the voltage should also have ample overhead to drive the load at the maximum upscale output current of 24mA Cannot Measure Input Voltage or Current DC Current is input to TB1 upper terminal block while voltage is input to TB2 lower terminal block For input step output appears to make 2 steps to reach its final value When you step the input signal it takes two samples for the A D to charge up to its final value and this is evident when using a scope to examine the output transition in response to a step change at the input which appears to make two steps to arrive at its final level Output goes to Over Range 24mA 22mA or Under Range Limit 3 5mA This indicates that either the input signal is out of range or a sensor lead has broken It can also occur due to contention between earth ground at the PC USB port and the input sensor A fully upscale signal can also indicate failed communication with the output DAC firmware problem Check the input signal with respect to its range and reduce or increase as required to drive the output current within its linear operating range A fully upscale or down scale signal can be driven by a sensor fault such as an
15. open or broken sensor lead Also check the wiring of your input sensor If you are not isolating USB check for a ground loop between a grounded sensor and earth ground of the PC USB port Output holds last value when connect USB Acromag Inc Tel 248 295 0880 Unit is awaiting initialization via its configuration software used to set it up configure it and calibrate it 24 Boot the configuration software to regain operation The USB port is intended for setup and configuration of the module and it should not be left connected to USB without also booting the software http www acromag com Model TT236 0600 Two Wire DC I V Transmitter w USB Service amp Repair Assistance This unit contains solid state components and requires no maintenance except for periodic cleaning and transmitter configuration parameter zero and full scale verification The enclosure is not meant to be opened for access and can be damaged easily if snapped apart Thus it is highly recommended that a non functioning transmitter be returned to Acromag for repair or replacement Acromag has automated test equipment that thoroughly checks and calibrates the performance of each transmitter and can restore firmware Please refer to the Acromag Service Policy and Warranty Bulletins or contact Acromag for complete details on how to obtain repair or replacement Acromag Inc Tel 248 295 0880 25 http www acromag com Model TT236 0600
16. Acromag l4 THE LEADER IN INDUSTRIAL I O USB Programmable DIN Rail Mount Thin Transmitter Model TT236 0600 Two Wire Transmitter DC Current or Low DC Voltage Input USER S MANUAL ACROMAG INCORPORATED Tel 248 295 0880 30765 South Wixom Road Fax 248 624 9234 Wixom MI 48393 7037 U S A email sales acromag com Copyright 2012 2013 Acromag Inc Printed in the USA Data and specifications are subject to change without notice 8500 940C Model TT236 0600 Two Wire DC I V Transmitter w USB Table of Contents GETTING STARTED DESCRIPTION peru ans EFINL E EVA acetate FERE uaaa EVEN UE CEU DER CMS CEPR KEEN VYHTM MEIN QUIM TENES 5 MARRIOTT OTT LI TII IL T IIT E 5 hin me 5 Mechanical DIM NSIONS ec 7 DIN Rail Mounting amp RembWUVal iiesccvavosux rixa luo Ea poU EV Ee bka DNE EY FENEV EXE VOR EU AERE VIE Mon LX EUER RR Cd E ERE 7 ELECTRICAL CONNECTIONS nean anRanEuSE tu xy C cREVNEu E ERE S RxE R S REI EA GERY RS RR qx R xA 8 INPUT CONNECTIONS e 9 Output Power Connections i uiesckencra eX FOpXEEEEEEOEFRTAEEPETE E FYYEFEVAFEEWEE Y EV OEFATAE BPATE VK ens YAT FEOKEA VEM YEE 10 Earth Ground Connections icis ari oid On vd ad ed dabei or Ra Fa VaE Cr RE Fd E AH vv d Fe VV UEM dw ERE 12 USB Connection S issiria orn eere ea neo ra Ya cree eon ae ken ana eoo Go ae eer aeo Save een
17. EN 61000 6 3 1 Enclosure Port per CISPR 16 2 Low Voltage AC Mains Port per CISPR 14 16 3 DC Power Port per CISPR 16 4 Telecom Network Port per CISPR 22 Safety Approvals UL Listed USA amp Canada Hazardous Locations Class I Division 2 Groups A B C D Hazardous Location or Nonhazardous Locations only These devices are open type devices that are to be installed in an enclosure suitable for the environment Consult Factory Electromagnetic Compatibility EMC CE marked per EMC Directive 2004 108 EC Consult factory Reliability Prediction MTBF Mean Time Between Failure MTBF in hours using MIL HDBK 217F FN2 Per MIL HDBK 217 Ground Benign Controlled GaGc MTBF Hours MTBF Years Failure Rate FIT 25 C 966 903 hrs 110 4 years 1 034 40 C 632 455 hrs 72 2 years 1 581 Acromag Inc Tel 248 295 0880 32 http www acromag com Model TT236 0600 Two Wire DC I V Transmitter w USB Configuration Controls Software Configuration Only via USB This transmitter drives an analog output current in a 2 wire loop proportional to a sensor input based on the differential voltage measurement across the sensor for sensor voltage input at TB2 or the differential voltage measure across its 24 90 current shunt resistor for current input at TB1 No switches or potentiometers are used to make adjustments to this transmitter Its behavior as an isolated signal amplifier transducer is determined via programm
18. EY TERME E OR e eR AV yn 12 USB Connections dux eo Ora Ese qu Feud una Ear ud teLs Ganda ba naaa e PER RERO DURER ER UU EA deve VAR sanS 13 CONFIGURATION SOFTWARE 11 rrenrn eren rrr nn nnne nnne annuus 14 Quick OVervieW ooo rn ie nu vote ven oan e e va eae uae g oo e Ve E Ene YE VR SR TR AERE AER TEN Ue FECE KNEE C ERREUR TRES 14 OPERATION STEP BY STEPD 4 oir erit tenait ecou ore cans 16 Acromag Inc Tel 248 295 0880 3 http www acromag com Model TT236 0600 Conn ctions ios ciecaieckacecssekosceicssivaedescvecdicnacsndse Configuration sio c pce Sese eub ex EE DU EE e coEE ede Calibration Optional esses BLOCK DIAGRAM nnn nnn How It Works oen een toe sa e kn aere Go gno nare aa koe ius TROUBLESHOOTING cesses Diagnostics Table i sescestsccssincssenttecriaitauisiesdeutiacasanane Service amp Repair Assistance cecus ACCESSORIES 5 5 2 c In iere eetor enu carre Software Interface Package USB Isolator soni eir Ux Heer rb P PER UL Rn USB A B Cables sissinisisckisesessvsansvscdvobvassvsavueecnscaveniscess USB A mini B Cable eorr prac rn Rb edente OUR DUE eer ecrn reino esa eoe aeo uae na vk ee asa e RUE E PR Ere e vus USB IWEBFIdCe unie toic aba oe DEO Renate Enclosure amp Physical eeeeeeeeee Environmehtal 35
19. For additional information on may be mounted side by side on 12 5mm centers Acromag Inc Tel 248 295 0880 5 http www acromag com Model TT236 0600 these devices and related topics please visit our web site at www acromag com and download our whitepaper 8500 904 Introduction to Two Wire Transmitters Two Wire DC I V Transmitter w USB This model isolates a current or voltage input signal and can mate with grounded or non grounded sensors It provides a 4 20mA output current linear with sensor current or voltage The output signal is transmitted via a two wire 4 20mA current loop The two wire current signal can be transmitted over long distances with high noise immunity Its inherent live zero 4mA offset current offers built in output fault detection should an output wire break Extra connection screws at the output allow it to be optionally wired for a sourced 4 20mA output configuration see Optional Output Wiring Acromag Inc Tel 248 295 0880 6 http www acromag com Model TT236 0600 Mechanical Dimensions Units may be mounted to 35mm T type DIN rail 35mm type EN50022 and side by side on 0 5 inch centers WARNING IEC Safety Standards may require that this device be mounted within an approved metal enclosure or sub system particularly for applications with exposure to voltages greater than or equal to 75VDC or 50VAC Two Wire DC I V Transmitter w USB 99 0 gt gt 12 5 3
20. I O Config TEST IjO s Click Start Polling to poll the input and display its value The LED next to the button will flash when polling is active Click Stop Polling to discontinue polling the input Acromag Inc Tel 248 295 0880 Two Wire DC I V Transmitter w USB After you connect USB and Open communication with a unit the Status field indicates Device opened successfully as shown in first screen at left At this point you can click the I O Config Test tab to begin configuring the unit or to optionally test its operation Note that you should already have loop power connected to the transmitter You will not be able to calibrate a unit or test it without loop power also applied When you click the I O Config Test tab the software retrieves the unit s current configuration and displays it within the I O Config Test page similar to the second screen shown at left If you make changes to this Configuration Screen but do not write them to the unit you can retrieve the module s current configuration by clicking the Get I O Config button at the top of this screen This model has two input channels one for current and one for voltage DC current input is wired to TB1 the upper terminal block while DC voltage input is wired to TB2 the lower terminal block Only one input may drive the output current loop at one time and this is determined by your input range selection Select the Input Ra
21. O USB A MALE Refer to Configuration Software Kit Model TT SIP which includes 1 ea Model 4001 113 USB Cable 1 ea Model 4001 112 USB Cable 1 ea Model USB ISOLATOR 1 ea Model 5040 944 TT CDROM Software CONNEC CABLE Model 4001 112 MODEL NO USB ISOLATOR e USB Signal Isolation is Required See Below You may use Acromag model AN USB ISOLATOR to isolate your USB port or you can optionally use another USB signal isolator that supports USB Full Speed operation 12Mbps WARNING The intent of mating e Configuration Requires USB and Loop Power This transmitter draws power USB with this transmitter is so that from both the current loop and from USB during setup it can be conveniently setup and calibrated in a safe area then installed in the field which may be in a hazardous area Do not attempt to connect a PC or laptop to this unit while installed in a hazardous area as USB energy levels could ignite explosive gases or particles in the air IMPORTANT All USB logic signals to the transmitter are referenced to the potential of its internal signal ground This ground is also held in common with the USB ground and shield ground The potential of the transmitter s current output pin output minus relative to earth ground will vary according to the load current and load resistance net IR drop Without isolation this IR drop would drive a potential difference between the normally grounded current lo
22. USB via a USB isolator for this reason and for increased safety and noise immunity Use an isolator like the Acromag USB ISOLATOR Otherwise use a battery powered laptop to configure the transmitter which does not normally earth ground its USB port Output Erratic Not operational or at Wrong Value Is your loop power supply at the correct level for your load 23 Verify loop voltage and level Ideally your supply must be adequate to provide 11V MIN to the transmitter plus the IR drop in the load plus the IR drop in the lead wires and all at the maximum loop current 24mA http www acromag com Model TT236 0600 Diagnostics Table Two Wire DC I V Transmitter w USB POSSIBLE CAUSE POSSIBLE FIX Cannot Calibrate Input Channel Is input wired properly Check that input is wired to input terminals using the correct polarity Cannot Calibrate the Output or Cannot Test the Unit Loop power ON to the unit The unit receives power from both USB when connected and its output loop power supply While you can configure a unit over USB without loop power applied it also requires a loop power connection to Test its operation or calibrate it Unit drives a low current but fails to drive current at near or above 20maA Loop supply voltage is too low to support a full scale or over range current level in the loop load Input may be connected to wrong terminal For a step change in the
23. acrior pent roov Prae e betur Agency Approvals 4 oon ie enean onn sre Reliability Prediction eee eee eee Configuration Controls eeeeee eere REVISION HISTORY eren All trademarks are the property of their respective owners Acromag Inc Tel 248 295 0880 4 Two Wire DC I V Transmitter w USB http www acromag com Model TT236 0600 Two Wire DC I V Transmitter w USB IMPORTANT SAFETY CONSIDERATIONS You must consider the possible negative effects of power wiring component sensor or software failure in the design of any type of control or monitoring system This is very important where property loss or human life is involved It is important that you perform satisfactory overall system design and it is agreed between you and Acromag that this is your responsibility The information of this manual may change without notice Acromag makes no warranty of any kind with regard to this material including but not limited to the implied warranties of merchantability and fitness for a particular purpose Further Acromag assumes no responsibility for any errors that may appear in this manual and makes no commitment to update or keep current the information contained in this manual No part of this manual may be copied or reproduced in any form without the prior written consent of Acromag Inc GETTING STARTED DESCRIPTION Symbols on equipment
24. alibration if you think you made an error during recalibration have degraded its performance or if the I O channel appears erratic You can use the Restore to Factory Default button to return the unit to its original factory state see Specifications Reference Test Conditions and configuration settings This does not restore calibration only configuration Alternately this button can be used as a Sanitation tool to restore the unit to its initial configuration This field displays calibration status messages like No Error Transfer Error and Timeout Error during calibration If you encounter a Transfer or Timeout Error you may have to repeat the calibration process 21 http www acromag com Model TT236 0600 BLOCK DIAGRAM TT236 0600 SIMPLIFIED SCHEMATIC FILTERING AND DETAIL OMITTED FOR CLARITY DC CURRENT OR DC VOLTAGE INPUT TB2 500mV 0 0 5V IN2 QZ VOLTAGE v INPUT FILTER OQ INPUT CLAMPS IN2 100K INPUTBIAS 1 25V Vv How It Works Key Points of Operation Unit is Loop Powered Input is Isolated from Output Input is Differential amp Bipolar Voltage Input is separate from Current Input Output Power Terminals are Not Polarized Input circuit ground is common to USB ground USB powers a portion of the input circuit when connected but not the output Acromag Inc Tel 248 295 0880 Two Wire DC I V Transmitter w USB ISOLATED OUTPUT gt
25. and 0 500mv for inputs wired to TB2 e Setthe level of digital filtering to High Medium or Low Note that the corresponding I O response time will vary with filter selection to 1200ms 150ms and 50ms respectively e View the unit s configuration communication status in the Status field e Use the I O Scaling fields to specify the specific input range endpoints that are to correspond to the 4mA and 20mA output endpoints e Last after making I O changes send your settings to the unit by clicking the Send I O Config button and following the on screen prompts For detailed configuration and calibration procedures see the Operation Step By Step section of the Technical Reference on page 14 of this manual 14 http www acromag com Model TT236 0600 Quick Overview V 11236 Configuration Software Communicat tion Setup 1 0 Config Test Calibration CONFIGURE I O Get 1 0 Config E Medium 150m5 Input Range Input Fitering Status No Error 1jO Scaling 0 000 mA 4mA Out 20 000 mA 20mA Out Send 1 0 Config TESTO V 11236 Configuration Software Communicat tion Setup 1 0 Config Test Calibration CALIBRATION Input Input Cal Instructions FACTORY SETTINGS Restore Factory Calibration _ _ Restore to Factory Defaut CALIBRATION STATUS HELP You can press F1 for Help ona selected or highlighted field or control You can also click the button in the upper right ha
26. and host PC Verify USB cable from isolator is plugged into the unit and the isolator Verify that USB cable from PC is also plugged into the PC USB port and into the isolator USB has not enumerated the device Use the reset button on the Acromag USB isolator to trigger renumeration of the transmitter or simply unplug and replug the USB cable to the transmitter Communication or power was interrupted with USB connected and config software running Close the current connection with the software then select and re open the transmitter for communication or simply exit the Configuration software and reboot it Cannot Communicate with Transmitter via USB Unit fails to operate or exhibits an output shift Output shifts off range when you connect USB A missing USB Isolator could cause a ground loop between a grounded input sensor and earth ground at the connected Personal Computer s USB port Isolated transmitters can be used with grounded or ungrounded inputs but you can only connect grounded sensors if the USB signals are also isolated Without USB isolation a ground loop is created between a grounded input and earth ground of the PC USB port This module s input is biased 1 25V off input ground to process negative going signals Earth ground applied via the non isolated USB connection with an earth grounded sensor would clip the input bias and truncate the negative signal range It s best to connect to
27. chosen too close together performance will be degraded Once you have made your configuration selections click the Send I O Config button to write them to the module You can read the status of your communication with the module in the Configure I O Status field Alternately you could click File in the upper left hand corner to save the settings to a file on your PC for reference later or for duplicating your configuration on other modules At this point you can test the module s operation by clicking the Start Polling button to trigger the software to periodically read the input and display its value in the field to the right of this button Note the simulated lamp next to the button flashes slowly each time it samples the input Click the Stop Polling button to stop polling the input channel before moving onto the next page 19 http www acromag com Model TT236 0600 Calibration Optional 17236 Configuration Software Communication Setup I O Config Test Calibration CALIBRATION Input Input Cal Instructions Output Output Cal Instructions FACTORY SETTINGS Restore Factory Calibration Restore to Factory Default CALIBRATION STATUS CAUTION Input Calibration You must input values within your selected input range Driving input levels outside of the selected input range will not be acceptable for calibration of zero or full scale Since input levels cannot be validated during field cal
28. com The standard model without adding custom factory calibration is calibrated by default to reference test conditions for 4 20mA DC at TB1 mapped to 4 to 20mA at the output Recalibration of any model will require use of a TT SIP configuration kit ordered separately see Accessories section Models can be mounted on standard 35mm T Type DIN rail Input Reference Test Conditions 4 to 20mA current input at TB1 or 0 5V input at TB2 25 C Ambient Temperature 24V DC Loop Supply 2500 Load DC Current Input 1 at TB1 Only Configurable for nominal input ranges of 20mA O to 20mA 4 20mA 0 11 17mA and 1mA DC Nominal input ranges may be rescaled for smaller ranges A precision 24 9Q current sink resistor converts the input current to a voltage that is processed differentially by the A D converter An optional external sensor is required to monitor AC current signals see Acromag Model 5020 350 This toroidal sensor generates 0 to 11 17mA DC to drive the DC current input of this module with AC input current through its primary see Table 1 of next page for scaling the AC current by number of primary turns DC Voltage Input 2 at TB2 Only Configurable for DC voltage ranges of 0 5V to 0 5V or O to 500mV No resistive divider is present on this input and its input impedance is 15MQ minimum Input Overvoltage Protection Bipolar Transient Voltage Suppressers TVS 5 6V clamp level typical Also includes differential input diode
29. cross the inductive load and this will typically cure the problem Acromag Inc Tel 248 295 0880 11 http www acromag com Model TT236 0600 Two Wire DC I V Transmitter w USB This model includes two extra terminal connections at TB4 marked C which Output Power i E ih provide a convenient wiring point for a sourcing wiring variation as shown below Connections Internally these two terminals are connected in common with each other and do not connect to the internal circuit Use of these terminals in your wiring scheme allows you to connect external power local to the transmitter and form a sourcing entity from this sinking output as shown LOCAL 24VDC MODEL TT2XX 0600 OPTIONAL OUTPUT WIRING POWER SUPPLY OPTIONAL SOURCING OUTPUT CONNECTIONS WITH ud POWER LOCAL TO TRANSMITTER 24VDC 4 f IN TOP VIEW INPUT SIDE OUTPUT SIDE OUTPUT SIDE 7 O ee REMOTE RECEIVER LOAD TB3 F s LOOP TERMINALS Ed ao L 5 aoe A M TWISTED PAIR M Jeeeecoce R Loap AND MODEL TT2XX 0600 TB4 f common EG E TERMINALS EHE SZ Cc l OPTIONAL COMMON CONNECTIONS WITH LOCAL EXTERNAL 3 WIRE POWER FORM amp A SOURCING OUTPUT RELATIVE TO THE REMOTE SINKING LOAD Earth Ground Connections The unit housing is plastic and does no
30. d This will interfere with operation and cause the output to shift For this reason USB isolation is strongly recommended when connecting to a PC Otherwise in the absence of USB isolation and when connected to a grounded input sensor a battery powered laptop could be used to connect to the unit as the laptop does not normally connect to earth ground General purpose plastic enclosure for mounting on 35mm T type DIN rail Dimensions Width 12 5mm 0 5 inches Length 114 5mm 4 51 inches Depth 99 0mm 3 90 inches Refer to Mechanical Dimensions drawing 1 O Connectors Removable plug in type terminal blocks rated for 12A 250V AWG 4826 12 stranded or solid copper wire Program Connector USB Mini B type 5 pin See USB Interface Case Material Self extinguishing polyamide UL94 V O rated color light gray General purpose NEMA Type 1 enclosure Circuit Board Military grade fire retardant epoxy glass per IPC 4101 98 with humi seal conformal coating DIN Rail Mounting Unit is normally mounted to 35x15mm T type DIN rails Refer to the DIN Rail Mounting amp Removal section for more details Shipping Weight 0 5 pounds 0 22 Kg packed These limits represent the minimum requirements of the applicable standard but this product has typically been tested to comply with higher standards in some cases Operating Temperature 40 C to 80 C 40 F to 176 F Storage Temperature 40 C to 85 C 40 F to 185 F Rela
31. e Nese 26 SPECIFICATION S 1 21 5 ed qexv bee enc ennt tix Iudae torio ae 27 Model NUWDGIS oe tocsoi m abd bsc Udo ned tude yee aeara tain Eear epo ana aaraa 27 INPUE ce c 27 SI DUT ec XR 29 ET d luis a P o 30 Enclosure amp PIYSICAD E n 31 Environmental Miete 31 Agency Approvals ccr E ree eai d eo nA Ar dass acre LRa o ape lzTe Cun rd EUR RE LEER Nuda 32 Reliability Prediction et M 32 Configuration Controls radii euo de Riu a a FadbsER chos iso Mares estore eee hota 33 DESCRIPTIO N e 5 CARI M M Y 5 PP BU CATION suoscoi cie dubi ivo EE CE pd aA LUE ud c9 A LORD ASUPEOAE Lis E CEN EL REDE SOPR A amen PE OEELODR RYE AOE UNE EUM 5 Mechanical Dimensions deeoeed rano eris ERE RE eot du sts das CE VY er Ed n EUR FER ER T EEEE aiie 7 DIN Rail Mounting amp Removal ient asas v eb ceo reda RR Eu CPU EEbdx Ra rou eU En eia ERE M Ede PEE Er Epp EROR 7 ELECTRICAL CONNECTIONS eeeeeeeen enne n nnne nn nnne natnm nana nnnm natn nnnm 8 INPUP ConnectlOrs 5 erret eo eee tore eese eee eo pn taxe E eor e ae UN Ne ee Te Eo Pese ee Sete eoo yea oov EP RR ICE RE ee Eee Us 9 Qutput Power Connections x sess re E Lr rrr ENT REREXER RENE REN NER ERER ME CE EN NUREUE ERE CRE QURE AER ELEE ME UR E aaia 10 Earth Ground Connections cierre bo eure eser Dea o UP X eb oet Vo Vn E vp d ye R
32. e of 10923 and 20mA to 54613 Thus for the 4 20mA output range we have an output resolution of 54613 10923 or 1 part in 43690 The effective I O resolution of this unit will be the lowest resolution of either the input or the output Acromag Inc Tel 248 295 0880 29 http www acromag com Model TT236 0600 Two Wire DC I V Transmitter w USB Output Output Response Time For an input step change driving 4 to 20mA into a 250 load with a 24V power the response time varies with digital filter level as follows FILTER LEVEL RESPONSE TIME TYPICAL Low Filter 50ms Medium Filter 150ms High Filter 1200ms Output Power Supply This device is output loop powered from 12 32V DC SELV Safety Extra Low Voltage 24mA maximum The supply voltage across the transmitter must never exceed 36V even with a shorted load The supply voltage level must be chosen to provide a minimum of full scale current to the load 0 020 R typical plus 11V minimum to the transmitter terminals plus any line drop Ideally your supply should drive over scale current levels up to 24mA into load Reverse polarity protection is inherent as output terminals are not polarized The output polarity labels on the enclosure are for reference only CAUTION Do not exceed 36VDC peak to avoid damage to the unit Terminal voltage above 11V minimum must be maintained across the unit during operation Output Power Supply Effect Less than 0 001 of outpu
33. ed variables set using a temporary USB connection to a host computer or laptop running a Windows compatible configuration software program specific to the transmitter model This software provides the framework for digital control of all configuration and calibration parameters and this information is stored in non volatile memory Refer to Operation Step By Step in the Technical Reference section of this manual for detailed information on available software control of this model Acromag Inc Tel 248 295 0880 33 http www acromag com Model TT236 0600 Two Wire DC I V Transmitter w USB Revision History The following table show the revision history for this document Release Date EGR DOC Description of Revision 01 OCT 12 BC KLK Initial Acromag release 26 JULY 13 CAP ARP Added UL Mark to this model removed pending refer to ECN 13G017 for additional information Added note to USB connections drawing refer to ECN 13F005 for additional information 16 DEC 13 JEB ARP Updated MTBF Numbers Removed P O Box from address Acromag Inc Tel 248 295 0880 34 http www acromag com
34. h on each lead and insert the wire ends into the cage clamp connector of the terminal block Use a screwdriver to tighten the screw by turning it in a clockwise direction to secure the wire 0 5 0 6Nm torque Since common mode voltages can exist on signal wiring adequate wire insulation should be used and proper wiring practices followed As a rule output wires are normally separated from input wiring for safety as well as for low noise pickup Acromag Inc Tel 248 295 0880 8 http www acromag com Model TT236 0600 Two Wire DC I V Transmitter w USB Input Connections Sensor wires are wired directly to transmitter input terminals at the bottom of the module the spring loaded DIN clip side as shown in the connection drawing below Observe proper polarity when making input connections e Transmitter input signal is isolated from output e DC Current is wired to the upper terminal blocks TB1 e DC Voltage is wired to the lower terminal blocks TB2 e Inputs are polarized and The positive input is on the left and labeled and the negative input is to its right Observe proper polarity See connection figure below e Only one input current or voltage may drive the output at one time MODEL TT236 0600 INPUT SENSOR WIRING BOTTOM VIEW
35. ibration incorrect signal levels will produce an undesired output response Acromag Inc Tel 248 295 0880 Two Wire DC I V Transmitter w USB This unit has already been factory calibrated If you have configured your unit and encountered excessive error you can click the Calibration tab to display the Calibration control page shown at left IMPORTANT This unit has already had its input and output channels factory calibrated with a high level of precision If you attempt to recalibrate the input or output channel you could degrade its performance if you do it improperly or you use lower grade equipment Consider your decision to recalibrate carefully Calibration of this model is a simple two part process initiated by simply clicking the respective Input or Output Instructions button to get started and follow the on screen prompts CALIBRATION Input Before attempting to recalibrate the input first set the Input Range to calibrate from the I O Config Test page Additionally make sure you write your selections to the unit by clicking the Send I O Config button of that page Click the Input Cal Instructions button to begin input calibration and enable the Input Zero and Full Scale buttons Click the Input Zero button and you will be prompted to input the minimum value of your selected input range at the appropriate input channel note that it uses the nominal range endpoints not the scaled range endpoints If
36. ibration or adjustment When used with a TT236 module it also facilitates current input isolation from the voltage input and redundant current input isolation with respect to the output of this transmitter Acromag Inc Tel 248 295 0880 28 http www acromag com Model TT236 0600 Input Output Two Wire DC I V Transmitter w USB Table 2 Optional AC Current Sensor Turns amp Range AC Current Sensor Output Input Range Primary Turns Red Black Wires 0 to 20A AC 0 to 11 17mA DC OtolDAC 2 OtoAAC 04 0 0 0 Oto2AAC 10 S OtoiAAC TT The output wires of this sensor are polarized with red as plus and black as minus Normally these output wires are attached to one end of a user supplied cable while the other end connects to the DC current input at TB1 AC Input Burden A function of the wire gauge resistance used for primary turns the current carrying wire being monitored AC Current Sensor to Transmitter Wiring Distance 400 feet maximum for 18 gauge wire Other wire gauges can be used as long as the resistance of both wires is less than 5Q AC Input Overload The AC current sensor will withstand overload conditions as follows e 20times full scale for 0 01 seconds e 10times full scale for 0 1 seconds e 5times full scale for 1 0 second Output Range 4 to 20mA DC nominal range with under range capability down to 3 5mA and over range capability up to 24
37. l 248 295 0880 Two Wire DC I V Transmitter w USB CALIBRATION Output Click the Output Cal Instructions button to begin output calibration and enable the Output Zero and Full Scale buttons First adjust the input signal as necessary to drive the output current to precisely 4 000mA Be sure to measure this level accurately or performance will be degraded After driving the output to 4 000mA click the Output Zero button of the Calibration Output section to calibrate the output zero level Next adjust the input signal as necessary to drive the output current to precisely 20 000mA Be sure to measure this level accurately or performance will be degraded After driving the output to 20 000mA click the Output Full Scale button of the Calibration Output section to calibrate the output full scale level If following calibration your output acts erratic or appears imprecise you may need to repeat input or output calibration being very careful to take accurate measurements and input correct signal levels If you are measuring voltage across an output load resistance to measure the current level recommended make sure that you use exact resistance when calculating the measured loop current Also when rescaling make sure that you have adequate input span as too tight input spans have diminished resolution and will magnify error You can use the Restore Factory Calibration button to restore the transmitter s original factory c
38. ludes series inrush current limiting at USB power Cable Length Connection Distance 5 0 meters maximum Acromag Inc Tel 248 295 0880 30 http www acromag com Model TT236 0600 USB Interface Enclosure amp Physical Environmental Two Wire DC I V Transmitter w USB Driver No special drivers required Uses the built in USB Human Interface Device HID drivers of the Windows Operating System Windows XP or later versions only USB Connector 5 pin Mini USB B type socket Molex 67503 1020 PIN DEFINITION 5V Power Includes Inrush Current Limiting Differential Data Differential Data NC Not Connected Power Ground Connects to Signal Ground via ferrite bead Signal Ground Connects directly to Signal Ground 1Note Most Host Personal Computers except battery powered laptops will connect earth ground to the USB shield and signal ground IMPORTANT USB Isolation is recommended The input of this transmitter is isolated from its output and can be connected to grounded or un grounded input sensors However the transmitter s input circuit ground is connected in common to the USB power signal shield ground This will in turn make a connection to earth ground at the PC when directly connected to the USB port of a Personal Computer without using an isolator Failure to connect USB without isolation would connect the 1 25V input bias supply to input ground if the sensor is also earth grounde
39. mA unipolar input ranges or 22mA bipolar input ranges The output signal is linear with respect to DC input current applied at TB1 or DC input voltage applied at TB2 or optionally AC input current when used with an Acromag AC Current Sensor 5020 350 driving TB1 Output Accuracy Accuracy is better than 0 05 of span typical 0 196 Max for nominal input ranges Relative accuracy varies with calibrated input and output span Accuracy includes the combined effects of repeatability terminal point conformity and linearization but does not include sensor error Output Ripple Noise Less than 0 1 of output span Note High Speed Acquisition Additional filtering at the load is recommended for sensitive applications with high speed acquisition rates High frequency noise may be reduced or eliminated by placing a O 1uF capacitor directly across the load For excessive 60Hz supply ripple a 1uF or larger capacitor is recommended at the load Output Ambient Temperature Effect The combined effect of zero and span drift over temperature is better than 0 008 of span per C 80ppm C over the full ambient temperature range for reference test conditions see Input Specifications Output DAC Resolution Output DAC is 16 bit and its output current is approximated via the expression programmed count 65536 24mA The min loop current is 3 5mA typical which is approximated via a DAC program count of 9120 Likewise 4mA corresponds to a count valu
40. n Setup I O Config Test Calibration CONFIGURE I O Get I O Config E Medim 150ms w Input Range Input Filtering Status No Error 1jO Scaling 0 000 ma 4mA Out 20 000 mA 20mA out Send I O Config TEST 1 0 ss Click Start Polling to poll the input and display its value The LED next to the button will Flash when polling is active Click Stop Polling to discontinue polling the input HELP You can press F1 for Help on a selected or highlighted field or control You can also click the button in the upper right hand corner of the screen and click to point to a field or control to get a Help message pertaining to the item you pointed to Acromag Inc Tel 248 295 0880 Two Wire DC I V Transmitter w USB Select the Input Output Scaling You may rescale selected input range to use only a portion of the range to drive the 4 20mA output if desired But be careful not to reduce the range too much as resolution is proportionally diminished and noise error is magnified In the corresponding I O Scaling field set the input signal minimum zero value to correspond to 4mA of output current and the input signal maximum full scale value to correspond to 20mA of output current Note that some under and over range is built into each range selection You can optionally swap input levels to configure a reverse acting output response if desired If the input zero and full scale points are
41. nd corner of the screen and then click to point to a field or control to get a Help message pertaining to the item you pointed to Acromag Inc Tel 248 295 0880 Two Wire DC I V Transmitter w USB 1 0 Config Test TEST I O Optional Verify Unit Operation Here After making I O configuration changes you can use the TEST I O controls to Start Stop Polling the input channel as required to check your input readings e Click Start Polling to periodically read your input channel and validate its operation Click Stop Polling to stop polling the input channel Note the simulated red lamp left of the button flashes slowly when the software is polling the input channel CALIBRATION Calibrate the Input and or Output if Needed This unit has already been factory calibrated If you encounter excessive error you can click the Calibration tab to display the Calibration control page shown in the second screen at left To calibrate the Input or Output stage of this model simply click the respective Input or Output Instructions button to get started and follow the on screen prompts Input First set the Input Range to calibrate from the I O Config Test page and be sure to click the Send I O Config button before attempting calibration On the Calibration page click the Input Cal Instructions button to begin input calibration When you click the Zero or Full Scale buttons of the Input Calibration section you will be p
42. nge You can select DC Current ranges of 20mA 0 20mA 4 20mA 0 11 17mA or 1mA and these signals must be wired to TB1 You can also select DC Voltage ranges of 0 5V or 0 500mV and these signals are wired to TB2 Note that the any input range you pick can be rescaled to the output allowing you to use only a portion of the selected input range to drive the 4 20mA output current loop if desired However resolution will decrease proportionally as you rescale the input smaller than the nominal input range If you reduce the input range too far this will reduce the signal resolution magnify potential error and degrades the signal to noise ratio of the input channel Select the Input Filtering You may select the level of digital filtering to apply to the input channel as Low Medium or High The respective I O response times are indicated in parenthesis next to your filter selection Note that higher filter levels result in lower average noise but with a slower I O response time Note that if you make any changes to this screen which represents the current configuration of the connected module the only way to preserve your changes is to either write it to the device by clicking Send I O Config after completing your changes or by saving it to a file by clicking File in the upper left hand corner of the screen 18 http www acromag com Model TT236 0600 Configuration Y 11236 Configuration Software Communicatio
43. ngest distance between the field transmitter and the remote receiver as shown The output of this transmitter fluctuates relative to earth ground by the voltage drop in the load and connection wire This makes it flexible in the way it connects to various Receiver devices Acromag Inc Tel 248 295 0880 10 http www acromag com Model TT236 0600 Two Wire DC I V Transmitter w USB Outp ut Power In most installations the loop power supply will be local to either the transmitter or local to the remote receiver Common receiver devices include the input channel Connections of a Programmable Logic Controller PLC a Distributed Control System DCS or a panel meter Some receivers already provide excitation for the transmitter loop and these are referred to as sourcing inputs Other receivers that do not provide the excitation are referred to as sinking inputs and these will require that a separate power supply connect within the loop These types of receivers are depicted below MODEL TT2XX 0600 OUTPUT WIRING SINKING OUTPUT CONNECTIONS WITH COMMON TWO WIRE TRANSMITTER CONNECTION TO SOURCING AND SINKING INPUT RECEIVERS POWER LOCAL TO THE RECEIVER Two Wire Output Connections to the Input Card of a Distributed Control System or Programmable Logic Controller INPUT SIDE OUTPUT SIDE TOF VIEW OUTPUT
44. op and the grounded USB connection at the PC causing a ground loop that would inhibit setup and calibration and may even damage the transmitter This is why an isolated USB connection is recommended Alternatively you could avoid the use of an isolator if a battery powered laptop was used to connect to the transmitter and the laptop has no earth ground connection either directly or via a connected peripheral Acromag Inc Tel 248 295 0880 13 http www acromag com Model TT236 0600 Two Wire DC I V Transmitter w USB CONFIGURATION SOFTWARE Quick Overview Click Open to connect to the T1236 0600 and your screen will look similar to the following Y T7236 Configuration Software Communication Setup 1 0 Config Test Calibration DEVICE SELECT TT236 0600 1234567 1234567 Manufacturer Acromag Inc Status Device opened successfully Y 17236 Configuration Software Communication Setup 1 0 Config Test Calibration CONFIGURE I O Input Range Y Input Filtering Medium 150mS w Status No Error Send IJO Config TEST 1 0 se Click Start Polling to poll the input and display its value The LED next to the button will flash when polling is active Click Stop Polling to discontinue polling the input Acromag Inc Tel 248 295 0880 This transmitter can only be configured and calibrated via its Configuration Software and a USB connection to your PC or laptop The configuration sof
45. put meter must be accurate beyond the unit the Connection Configuration specifications or better than 0 1 A good rule of thumb is that your equipment Calibration process step by step accuracy should be four times better than the rated accuracy you are trying to But before you attempt to achieve with this transmitter reconfigure or recalibrate this 1 Connect Input Refer to Input Connections on page 7 and connect a precision transmitter please make the following electrical connections current source to TB1 or a precision voltage source to TB2 according to your application input range Your signal source must be adjustable to the nominal range zero and full scale values 2 Connect Output Power Refer to Output Power Connections of pages 8 and 9 and wire an output current loop to the transmitter as illustrated You will need to measure the output current accurately in order to calibrate the unit You could connect a current meter in series in this loop to read the loop current N Connect Output Pwr directly not recommended Alternatively you could simply connect a voltmeter across a series connected precision load resistor in the loop and accurately read the output current as a function of the IR voltage drop Configure produced in this resistor recommended In any case be sure to power the loop with a voltage that is minimally greater than the 11V required by the transmitter plus the IR drop of the wiring and terminals plus the IR
46. rompted to apply a specific current at TB1 or voltage level at TB2 to the selected channel Once you have applied this signal to the correct input terminals click the OK button of the prompt to calibrate and follow the on screen instructions Output Click the Output Cal Instructions button to begin output calibration You will be prompted to adjust the input signal as required to drive the output to precisely 4 000mA Zero or 20 000mA Full Scale Then once the output is set to zero or full scale you simply click the corresponding Zero or Full Scale button of the CALIBRATION Output section to set the output range zero or full scale endpoint Factory Settings Use Only In Case of Trouble or for Sanitation Purposes e Restores a transmitter to its original factory calibration e Restores a transmitter to its initial factory configuration You can click the Restore Factory buttons if you ever misconfigure or miscalibrate a transmitter in such a way that its operation appears erratic Calibration Status Bottom of Screen e Displays communication status messages for the calibration process The CALIBRATION STATUS message bar at the bottom of the screen will display status messages relative to calibration 15 http www acromag com Model TT236 0600 Two Wire DC I V Transmitter w USB TECHNICAL REFERENCE OPERATION STEP BY STEP Connections This section will walk you through Note Your input source and out
47. ross the transmitter plus any transmission line drop e Variation in power supply voltage between the minimum required and 32V maximum has negligible effect on transmitter accuracy e Variation in load resistance has negligible effect on output accuracy as long as the loop supply voltage is set accordingly e Note the traditional placement of earth ground in the current loop The transmitter output varies off this ground by the voltage drop in the load resistance and lead wire MODEL TT2XX 0600 OUTPUT POWER WIRING TRADITIONAL LOOP POWERED SINKING OUTPUT CONNECTIONS INPUT SIDE O OUTPUT SIDE MODEL TT2XX 0600 TOP VIEW OUTPUT SIDE TB3 THIS TRANSMITTER IS CURRENT LOOP POWERED T l 420mA SHIELDED RELHA t TWISTED PAIR UPPER LEVEL hoooccod DC SUPPLY CHP iesev IB4 E b LENAN e Rioo EARTH OPT C TERMINALS GROUND ARE COMMON SEE OPT TB4 WIRING NOTE OUTPUT TERMINALS ARE NOT POLARIZED AND PLUS amp MINUS LABELS ARE FOR REFERENCE ONLY OPTIONAL WIRING TERMINALS C ARE HELD IN COMMON AND USED FOR SOURCING LOOP WIRING SEE OPTIONAL OUTPUT WIRING DIAGRAM The traditional loop powered sinking output connections are shown above Shielded twisted pair wiring is often used at the output to connect the lo
48. t require an earth ground connection except where the optional input cable shield is terminated on the unit In this way the input cable shield connection is shunted to the earth ground applied at the G terminal via an internal isolation capacitor Internal circuitry is electrically isolated from this earth ground connection If the transmitter is mounted in a metal housing an earth ground wire connection to the metal housing s ground terminal green screw is usually required using suitable wire per applicable codes See the Electrical Connections Drawing for Output Power connections and note the traditional position of earth ground for the two wire output current loop Earth ground is normally applied at the output loop power minus terminal and in common with the loop load or loop receiver minus The Type II transmitter output terminals have a floating connection relative to earth ground and their potential varies with the voltage drop in the load and connection wire e Respect the traditional position of earth ground in a two wire current loop and avoid inadvertent connections to earth ground at other points which would drive ground loops and negatively affect operation e A USB isolator is recommended when configuring or calibrating a unit to avoid the ground loop that occurs if your input signal is also earth grounded A PC commonly earth grounds its USB port and this makes contact with both the USB signal and shield ground which is held
49. t span effect per volt DC of supply change Output Compliance and Load Resistance Equation 11V minimum transmitter Unit will drive 13V typical to the load with a 24V loop supply and 20mA loop current 6500 assuming negligible line drop Compute Rioaa Max Vsupply 11V 0 020A for 20mA full scale output current Refer to the following table Vsupply Volts Max Ricaa W 20mA amp No Line Drop Ideally you should be able to drive the over scale current of 24mA to your load and this would yield a maximum load resistance of 5400 for 24mA of loop current and a 24V loop supply Output Load Resistance Effect Less than 0 001 of output span effect for a 100Q change in load resistance USB Interface Unit includes a USB socket for temporary connection to a PC or laptop for the purpose of setup and reconfiguration USB isolation is required when connected to a grounded input sensor or driver see note below During reconfiguration and calibration the transmitter receives power from both the USB port and the output loop Both power sources must be present to calibrate the unit AN CAUTION Do not attempt to connect USB in a hazardous environment Transmitter should be setup and configured in a safe environment only Data Rate USB v1 1 full speed only at 12Mbps Up to 32K commands per second USB 2 0 compatible Transient Protection Adds transient voltage protection on USB power amp data lines Inrush Current Limiting Inc
50. tive Humidity 5 to 9596 non condensing Acromag Inc Tel 248 295 0880 31 http www acromag com Model TT236 0600 Environmental Agency Approvals Reliability Prediction Two Wire DC I V Transmitter w USB Isolation Input USB and the output power circuits are isolated from each other for common mode voltages up to 250VAC or 354V DC off DC power ground on a continuous basis will withstand 1500VAC dielectric strength test for one minute without breakdown This complies with test requirements of ANSI ISA 82 01 1988 for voltage rating specified Installation Category Suitable for installation in a Pollution Degree 2 environment with an Installation Category Over voltage Category Il rating per IEC 1010 1 1990 Shock amp Vibration Immunity Unit rated to 5g Random Vibration 5 500Hz in 3 axis at 2 hours axis per IEC60068 2 64 Mechanical Shock to 50g 3ms with 3 half sine shock pulses in each direction along 3 axis 18 shocks and 30g 11ms with 3 half sine shock pulses in each direction along 3 axis 18 shocks per IEC60068 2 27 Electromagnetic Compatibility EMC Minimum Immunity per BS EN 61000 6 1 1 Electrostatic Discharge Immunity ESD per IEC 61000 4 2 2 Radiated Field Immunity RFI per IEC 61000 4 3 3 Electrical Fast Transient Immunity EFT per IEC 61000 4 4 4 Surge Immunity per IEC 61000 4 5 5 Conducted RF Immunity CRFI per IEC 61000 4 6 This is a Class B Product with Emissions per BS
51. tp www acromag com Model TT236 0600 Two Wire DC I V Transmitter w USB TT2XX MODULE DIN RAIL MOUNTING AND REMOVAL TILT MODULE UPWARD TOWARDS RAIL AND HOOK ONTO UPPER LIP OF RAIL ROTATE MODULE DOWNWARD TO ENGAGE SPRING CLIP ONTO LOWER OUTPUT SIDE LIP OF RAIL TOP S PAREN N 35mm DIN Rail Co C C TT2XX MODULE T Rail 1 SPRING CLIP Oy BOTTOM muB dE SCREWDRIVER SLOT FOR REMOVAL FROM T TYPE DIN RAIL A SCREWDRIVER TO REMOVE MODULE FROM RAIL AS SHOWN ELECTRICAL CONNECTIONS A WARNING EXPLOSION HAZARD Do not disconnect equipment unless power has been removed or the area is known to be non hazardous WARNING EXPLOSION HAZARD Substitution of any components may impair suitability for Class I Division 2 WARNING EXPLOSION HAZARD The area must be known to be non hazardous before servicing replacing the unit and before installing Wire terminals can accommodate 14 26 AWG solid or stranded wire Input wiring may be shielded or unshielded type Ideally output wires should be twisted pair Terminals are pluggable and can be removed from their sockets by prying outward from the top with a flat head screwdriver blade This model allows current input to be wired to TB1 and voltage input to TB2 but only one input may drive the current output Strip back wire insulation 0 25 inc
52. tware can be downloaded free of charge from our web site at www acromag com This software is also included on a CDROM bundled with the Configuration Kit TT SIP see Accessories section For this model look for program TT236Config exe This software is compatible with XP or later versions of the Windows operating system The initial configuration software screen for this model is shown at left The Configuration screen is divided into three pages as follows Communication Setup I O Config Test and Calibration A short description of each of these pages follows Communication Setup DEVICE SELECT First Connect to Unit Here e Select from connected transmitters using the Device scroll field and Open Close communications with them e Display the Model Serial Number and Manufacturer of the connected transmitter and report the Status of the connection communication This section is used to select a connected transmitter and open close communications with it Device connection Status is also indicated here along with the connected transmitter s ID info Model Serial Number amp Manufacturer 1 0 Config Test CONFIGURE I O Reconfigure and or Test the Unit Here e You can click the Get I O Config button to retrieve the I O configuration of the currently connected transmitter e Selectthe Input Range You can select current ranges 20mA 0 20mA 4 20mA 0 11 17mA or 1mA for inputs wired to TB1 or voltage ranges 0 5V
53. ve eek a epa ka a eo Ese eos ye even 13 CONFIGURATION SOFTWARE 11 ee enn nnne nnn nn nnnm unu nnn u nns 14 Q icKkOVEFVIEW eunoe eee aE E a E EE E E E EEOAE 14 TECHNICAL REFERENCE OPERATION STEP BY STEP cccccccssescessseeecssseeseesseensessseesnssenseesseenssseseaeens 16 COMMECTIONS sci cescedic ces cicdsccccedccdareeconedvenivecostestouvsccescuaerevocevecdesceteesesewssedesautevelssesersiocrieeseseess 16 CONT BUCA ON P 17 ie ci nenivurae 20 BLOCK DIAGRAM ns T 22 How It Do CENT 22 TROUBLESHOOTING i ctodiinkokinis UTE D gH EODD KU IR SCERIU rS Y REPE GM VER pA OPE 23 Diagnostics mee 23 Service amp Repair Assistance x cscccssncsseegevccsdsececveveeseccecssenctecsectevdcaessctevescoveecdsasccessssvenscsestedecs 25 Acromag Inc Tel 248 295 0880 2 http www acromag com Model TT236 0600 Two Wire DC I V Transmitter w USB ACCESSORIES T 26 Software Interface Package irc cue e Lees otiose Dura VV odas bL dT dea reped oua Duero isso Evas ea P Rural n 26 BETALSIDICIMSNO E HE 26 USB A B Cable osten poe P va cops ia Uap bane IEEE HERR ASQ Ee T ERE UT riore OEKE NETen S SoSe E ESSEE SS 26 USB A mint B Cable iere rtr er Fen erbe SEve S dono ark enis ins tetoeded suprtedsdeseepeasewsusndedesves rir
54. you have selected a DC Current range you must drive 20mA OMA 4mA or 1mA at TB1 the upper input terminal block depending on the Input Range selected If you have selected a DC voltage range you would drive 0 5V or OV to TB2 the lower input terminal block The software does not use your scaled zero but the zero of the nominal input selected Once you input the zero precisely click the OK button of the prompt to calibrate zero and then follow the on screen prompt Click the Input Full Scale button and you will be prompted to input the maximum value of your selected input range at the appropriate input channel If you have selected a DC Current range this will be 20mA or 1mA at TB1 depending on the Input Range selected If you have selected a DC voltage range this will be 0 5V at TB2 The software does not use your scaled full scale but the full scale of the nominal input range selected Once you input full scale precisely click the OK button of the prompt to calibrate full scale and then follow the on screen prompt 20 http www acromag com Model TT236 0600 Calibration V T1236 Configuration Software Communication Setup I O Config Test Calibration CALIBRATION Input Input Cal Instructions Output Output Cal Instructions FACTORY SETTINGS Restore Factory Calibration Restore to Factory Default CALIBRATION STATUS Factory Settings Calibration Status Acromag Inc Te
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