Acromag TT235-0600 User Manual
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Acromag TT235-0600 User Manual

Two-wire transmitter rtd/resistance input
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USB Programmable, DIN Rail Mount
Thin Transmitter
Model TT235-0600, Two-Wire Transmitter
RTD/Resistance Input
4-20mA Output
USER'S MANUAL
ACROMAG INCORPORATED
Tel: (248) 295-0880
30765 South Wixom Road
Fax: (248) 624-9234
Wixom, MI 48393-2417 U.S.A.
email: sales@acromag.com
Copyright 2018, Acromag, Inc., Printed in the USA.
8500995M
Data and specifications are subject to change without notice.

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Summary of Contents for Acromag TT235-0600

  • Page 1 4-20mA Output USER’S MANUAL ACROMAG INCORPORATED Tel: (248) 295-0880 30765 South Wixom Road Fax: (248) 624-9234 Wixom, MI 48393-2417 U.S.A. email: sales@acromag.com Copyright 2018, Acromag, Inc., Printed in the USA. 8500995M Data and specifications are subject to change without notice.

  • Page 2: Table Of Contents

    BLOCK DIAGRAM ..................24 How It Works ........................24 TROUBLESHOOTING ................25 Diagnostics Table ....................... 25 Service & Repair Assistance ....................26 ACCESSORIES ..................27 Software Interface Package ....................27 USB Isolator ........................27 Acromag, Inc. Tel: 248-295-0880 - 2 - https://www.acromag.com http://www.acromag.com...
  • Page 3 Buyer and Acromag, that this is the Buyer's responsibility. The information of this manual may change without notice. Acromag, Inc. 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.

  • Page 4: Getting Starteddescription

    DESCRIPTION Symbols on equipment: The TT235-0600 is an ANSI/ISA Type 2 transmitter designed to interface with RTDs (Resistance Temperature Detector), or resistive elements, isolate the input signal, and modulate a 4-20mA current signal to drive a two-wire current loop. The transmitter provides RTD sensor excitation, linearization, lead-wire compensation, and lead break or sensor burnout detection.

  • Page 5: Mechanical Dimensions

    DIN rail clip and use it as a lever to force the DIN Acromag, Inc. Tel: 248-295-0880 - 5 - https://www.acromag.com...

  • Page 6: Electrical Connections

    C. 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. Acromag, Inc. Tel: 248-295-0880 - 6 - https://www.acromag.com http://www.acromag.com...

  • Page 7: Sensor Input Connections

    Important – End Stops: For hazardous location installations (Class I, Division 2 or ATEX/IECEx Zone 2) it must use two end stops (Acromag 1027-222) to secure the module(s) to the DIN rail (not shown).
  • Page 8 SHIELDED CABLE IS RECOMMENDED. FOR BEST RESULTS, GROUND THE CABLE SHIELD AT THE END OF THE CABLE CLOSEST TO THE GREATEST POTENTIAL SOURCE OF DISTURBANCE, USUALLY THE SENSOR END. DIN RAIL SPRING CLIP Acromag, Inc. Tel: 248-295-0880 - 8 - https://www.acromag.com http://www.acromag.com...
  • Page 9 NOTE 2: SHIELDED CABLE GROUND SHIELDED CABLE IS RECOMMENDED. FOR BEST RESULTS, GROUND THE CABLE SHIELD AT THE END OF THE CABLE CLOSEST TO THE GREATEST POTENTIAL SOURCE OF DISTURBANCE, USUALLY THE SENSOR END. Acromag, Inc. Tel: 248-295-0880 - 9 - https://www.acromag.com...

  • Page 10: Output/Power Connections

    This makes it flexible in the way it connects to various “Receiver” devices. Acromag, Inc. Tel: 248-295-0880 - 10 - https://www.acromag.com...
  • Page 11 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 0.1uF capacitor directly across the inductive load and this will typically cure the problem. Acromag, Inc. Tel: 248-295-0880 - 11 - https://www.acromag.com http://www.acromag.com...

  • Page 12: Earth Ground Connections

    (PC USB ports are commonly earth grounded and make contact with both the USB signal and shield ground which is held in common to the input circuit ground of the transmitter). Acromag, Inc. Tel: 248-295-0880 - 12 - https://www.acromag.com http://www.acromag.com...

  • Page 13: Usb Connections

    1 ea, Model USB-ISOLATOR 1 ea, Configuration Software CDROM 5040-944 • USB Signal Isolation is Required (See Below) – Acromag model USB-ISOLATOR may be used to isolate the USB port, or optionally, another USB signal isolator that supports USB Full Speed operation (12Mbps).

  • Page 14: Configuration Software

    CONFIGURATION SOFTWARE Quick Overview – Android This transmitter can be configured and calibrated via the Acromag Agility™ Config Tool App. This software can be downloaded free of charge from the Google Play store at play.google.com. To connect to this transmitter, a USB OTG (On-The-Go) cable (Acromag 5028-565) and USB A to Mini-B cable (Acromag 4001-113) are required.

  • Page 15: Quick Overview - Windows

    USB connection to a PC or laptop. The configuration software is contained in a zip file that can be downloaded free of charge from our web site at www.acromag.com. If you do not yet have a user account, you will need to create one before the download becomes accessible.
  • Page 16 Calibration Status (Bottom of Window) The Calibration Status bar at the bottom of the window will display status messages relative to calibration. Acromag, Inc. Tel: 248-295-0880 - 16 - https://www.acromag.com http://www.acromag.com...

  • Page 17: Operation Step-By-Step

    Now that you have made your connections and applied power to your loop, you can execute the “TT235 Config.exe” software to begin configuration of the transmitter (software is compatible with XP or later versions of the Windows operating system). Acromag, Inc. Tel: 248-295-0880 - 17 - https://www.acromag.com http://www.acromag.com...
  • Page 18 You will not be able to calibrate or test the transmitter without power applied. After executing the Acromag Configuration software for this transmitter, the window shown at left will appear, if you have not already connected to the transmitter via USB (note fields are blank under these conditions).

  • Page 19: Configuration

    • If you select “Two-wire”, the sensor lead-wire resistance will not be compensated for, and the total resistance of the ± lead-wires will contribute a positive shift in the sensor measurement. Acromag, Inc. Tel: 248-295-0880 - 19 - https://www.acromag.com http://www.acromag.com...
  • Page 20 Note the simulated lamp next to the button flashes each time the input is sampled. Click [Stop Polling] to stop polling the input. Acromag, Inc. Tel: 248-295-0880 - 20 - https://www.acromag.com...

  • Page 21: Calibration (Optional)

    Since input levels cannot be validated during calibration, incorrect signal levels will produce an undesired output response. Acromag, Inc. Tel: 248-295-0880 - 21 - https://www.acromag.com http://www.acromag.com...
  • Page 22 This field displays calibration status messages such as “No Error”, “No Device Connected”, “Calibration Error”, “Transfer Error”, and “Timeout Error” during calibration. If you encounter an error, you may have to repeat the calibration process.. Acromag, Inc. Tel: 248-295-0880 - 22 - https://www.acromag.com http://www.acromag.com...

  • Page 23: Rtd Resistance Versus Temperature

    (boiling point of water) minus the sensor resistance at 0°C (freezing point of water), by the sensor resistance at 0°C, then by 100°C (α = [R100°C -R0°C] / R0°C/ 100°C). For Pt100Ω α=0.00385, this is 38.5Ω/100.0Ω/100°C, or 0.00385Ω/Ω/°C. Acromag, Inc. Tel: 248-295-0880 - 23 - https://www.acromag.com...

  • Page 24: Block Diagram

    Model TT235-0600 RTD/Resistance Thermometer Transmitter w/USB BLOCK DIAGRAM ISOLATED OUTPUT TT235-0600 SIMPLIFIED SCHEMATIC PORT (FILTERING AND DETAIL OMITTED FOR CLARITY) 3.3V 12-36V V-MON 3.3V 3.XV 3.XV TWO-WIRE OUTPUT 3.XV 4-WIRE 3-WIRE 2-WIRE I = 1mA LOOP+ 12-36VDC 4-20 24b A/D CONV...

  • Page 25: Troubleshooting

    Bad USB Connection Recheck USB Cable Connection the questionable transmitter with a known good transmitter. Use the reset button on the Acromag USB USB has not enumerated the isolator to trigger re-enumeration of the Acromag’s Application Engineers transmitter.

  • Page 26: Service & Repair Assistance

    Its enclosure is not meant to be opened for access and can be damaged easily if snapped apart. 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.

  • Page 27: Accessories

    This is a 1 meter, USB A-miniB replacement cable for connection between the USB isolator and the transmitter. It is normally included in the TTC-SIP. Note that software for all TT Series models is available free of charge, online at www.acromag.com. Acromag, Inc. Tel: 248-295-0880 - 27 - https://www.acromag.com http://www.acromag.com...

  • Page 28: Usb Otg Cable

    USB OTG Cable 5028-565 This is a 6 inch, USB On-The-Go cable for connection between the USB A-mini B Cable and a mobile phone or tablet. It is required to use the Acromag Agility™ Config Tool App. Note that the Acromag Agility ™ Config Tool is available free of charge, online at the Google Play store.

  • Page 29: Specifications

    Beta constants for Thermistor input types, and output range. Normal or reverse acting output and a filter level can also be specified. Use form 8500-858 for specifying this calibration from our web site at www.acromag.com. The standard model without adding custom factory calibration is calibrated by default to reference test conditions.
  • Page 30 The effective I/O resolution of this transmitter will be the lowest resolution of the ADC itself or the output DAC (output DAC is 1 part in 46984 for 4-20mA). Acromag, Inc. Tel: 248-295-0880 - 30 - https://www.acromag.com...

  • Page 31: Output

    Output Ambient Temperature Drift: Includes the combined effects of zero and space drift over temperature and is better than 50ppm/C (±0.0050%/C) over the ambient temperature range for reference test conditions (see Input Specifications). Acromag, Inc. Tel: 248-295-0880 - 31 - https://www.acromag.com...
  • Page 32 Ideally, it should be possible to drive the over-scale current of 24mA to the load and this would yield a maximum load resistance of 540Ω for 24mA of loop current and a 24V loop supply. Acromag, Inc. Tel: 248-295-0880 - 32 - https://www.acromag.com...

  • Page 33: Usb Interface

    Acromag, Inc. Tel: 248-295-0880 - 33 - https://www.acromag.com http://www.acromag.com...

  • Page 34: Enclosure & Physical

    Class B Product with Emissions per BS EN 61000-6-3 Enclosure Port, per CISPR 16 Low Voltage AC Mains Port, per CISPR 14, 16 DC Power Port, per CISPR 16 Telecom / Network Port, per CISPR 22 Acromag, Inc. Tel: 248-295-0880 - 34 - https://www.acromag.com http://www.acromag.com...

  • Page 35: Agency Approvals

    ATEX/IECEx Certified: Model TT235-0600 is ATEX/IECEx Certified for Explosive Atmospheres per ATEX Directive 2014/34/EU which complies with standards EN IEC 60079-0:2018, EN IEC 60079-7:2015 +A1:2018, IEC 60079-0 Edition 7, and IEC 60079- 7 Edition 5.1.

  • Page 36: Revision History

    • Updated Input Resolution table: Added data for new Input Ranges. 31-JUL-2014 CAP/ARP Added UL caution symbols / statements 4-NOV-2014 JEB/ARP Added Acromag Agility™ Config Tool Quick Guide. Added USB OTG cable in Accessories Section. 15-OCT-2015 CAP/MJO Added ATEX symbols / statements. 19-AUG-2016 CAP/MJO Corrected “Circuit Board”...

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