Please read the following instructions and warnings before installation. Visually inspect the product for any damage that may have occurred during shipping. It is your responsibility to have a qualified person install this unit and make sure it conforms to NEC and local codes.
[Warning Symbol] Before beginning installation of this product:
- Disconnect all electrical power to the machine
- Make sure the machine cannot operate during installation
- Follow all safety warnings of the machine manufacturer
- Read and follow all installation instructions
Description
The TDX6 is an advanced design 6-point temperature scanner and pyrometer. It continually scans six grounded or ungrounded thermocouples, displays the temperature of the thermocouple selected, and has adjustable trip points for each input. A trip point read/scan knob provides for display and check/adjustment of the thermocouple temperature trip point. If any trip point is reached, its output turns ON and can be used as a control signal or to initiate alarms and/or shutdown.
The TDX6 unit features a digital display showing '4 082', a SCAN button, a TRIP POINT READ knob, and six trip point adjustment potentiometers labeled TP1 through TP6.
Specifications
| Power Requirements (Operating Voltages) | 120 VAC or 80-250 VDC, CD ignition or 24 VDC |
| Outputs | Models TDX6-B and TDX6-D: Six (6) isolated Field-Effect Transistor (F.E.T.) outputs; 0.1 A @ 250 VDC; switches on (applies ground) above trip point and switches off (removes ground) below trip point |
| Operating Temperature | -4 to 158° F (-20 to 70° C) |
| Storage Temperature | -40 to 300° F (-40 to 150° C) |
| Case | ABS 1/4 DIN (90 x 90 mm) |
| Scanning Speed | Complete scan in 30 seconds |
| Reset Differential | F.E.T. Models: Decreases 3° F or (C) |
| Display Update Time | Updates temperature every 0.3 seconds |
| Start-up Time Delay | Unit is locked out for 10 seconds after ignition voltage is sensed |
| Ambient Cold Junction Compensation Range | 2° F from 32° F to 122° F (1° C from 0° C to 50° C) |
| Measurement Range | Monitor Range 0-1999° F or (C) |
| Accuracy (J-type thermocouple) | From 50-150° F (J0-66° C) ±3° F (±2° C), from 150-1200° F (66-649° C) ±1.0% of reading |
| Accuracy (K-type thermocouple) | From 400-2000° F (204-1076° C) ±1.0% of reading |
| Trip Point Accuracy | ±3° F (±2° C) of reading |
| Trip Point Adjustment Range | 0-1999 Degrees |
| Open Thermocouple Input | A number '1' appears in the display to the right of the channel number, and the trip point operates. |
[Information Symbol] Note on grounded thermocouples: Using grounded thermocouples introduces the risk of odd currents or voltages being imposed on the thermocouple signal which can affect the accuracy of the reading. This is an inherent problem of grounded thermocouples, and the reason why FW Murphy prefers ungrounded thermocouples.
Certifications mentioned include SP and FM (ISO 9001, IATF 16949).
TDX6 Interface Capabilities
| Model | Power Source | Rating |
|---|---|---|
| LCDT | CD Ign., 120 VAC, 12/24 VDC | C1.I, Div.1, Gr. D, Haz. areas* |
| S5101 | 120 VAC, 12/24 VDC | C1.I, Div.1, Gr. D, Haz. areas* |
| TTDTM | CD Ign., negative ground, 12/24 VDC | C1.1, Div.2, Gr. D, Haz. areas** |
| TATTLETALE® | CD Ign., 120 VAC, 12/24 VDC | Non-Hazardous areas |
| PLC's and various annunciators not listed, contact factory. | ||
[Information Symbol] * An isolation barrier is needed between the TDX6 and an Annunciator rated for Class I, Division I, Group D, Hazardous Areas.
[Information Symbol] ** When used with approved ignition. Contact FW Murphy Production Controls for details.
Dimensions and Mounting
The TDX6 features a 1/4 DIN case measuring 90 x 90 mm.
Side view dimensions are 4-5/8 inches (117 mm) in height and 3-3/4 inches (95 mm) in width.
Back view dimensions are 3-1/2 inches (89 mm) in width and 3-3/4 inches (95 mm) in height.
Mounting options include a round hole mount (TDXF6) requiring a 4-3/8 inch (111 mm) diameter clearance, and a square hole mount with dimensions of 3-5/8 inches (92 mm) by 3-5/8 inches (92 mm), featuring three 1/4 inch (6 mm) diameter holes spaced 120 degrees apart.
Wiring
The TDX6 is a six-channel temperature monitor that can monitor and display from 1 to 6 thermocouples. When monitoring fewer than six channels, jumper the unused thermocouple terminals on the back of the TDX6 with the factory-provided jumper. The unused channel will display approximate ambient temperature.
Grounded or Ungrounded Thermocouples
[Information Symbol] FW Murphy prefers ungrounded thermocouples.
- Connect the thermocouple leads to the thermocouples. Refer to the "Using Thermocouple Extension Wire" section if extension wire is needed. Note: Attach wire markers to each thermocouple lead identifying polarity and thermocouple number.
- Remove the factory-installed jumper on the TDX6 for each thermocouple to be installed.
- Connect the positive lead of thermocouple TC1 to the positive (+) terminal of terminal strip TC1.
- Connect the negative lead of thermocouple TC1 to the negative (-) terminal of terminal strip TC1.
- Repeat steps 2 through 4 for each thermocouple to be monitored.
The wiring diagram shows terminal strips for INPUT (TP1+ to TP6+), COM-, and POWER INPUT (+ and -). It also indicates connections for LOAD and a jumper for input terminals.
Connecting Power Wires
- Ensure power is OFF.
- Connect the power input leads to the small terminal block located on the back of the TDX6. TDX6 connections have no polarity.
Operation Test
Perform the Operation Test after the TDX6 is installed and wired appropriately.
- Slowly rotate each trip point potentiometer clockwise until a detent is felt.
- Apply power to the monitor.
- Verify that the TRIP POINT READ knob is in the SCAN mode. The left side of the display will show the thermocouple number, and the right side will show the temperature of that thermocouple.
- [Information Symbol] When the TRIP POINT READ knob is in SCAN mode, depressing the THERMOCOUPLE READ push button will stop the scan sequence at the next channel and display the thermocouple number and its reading. Scanning will resume approximately 3 seconds after the push button is released. With the TRIP POINT READ knob selecting a number, the push button should not be depressed.
- Set the TRIP POINT READ knob to the number 1 setting. The right side of the display window will show the trip point reading of the TC1 thermocouple. The left side of the display will continue to scroll 1 to 6, indicating that the unit is still scanning all channels.
- Rotate the TP1 trip point potentiometer counterclockwise until trip point TP1 turns on and trips the shutdown device or alarm. Verify by observation.
- Rotate the trip point potentiometer TP1 clockwise several turns to turn off TP1.
- Reset alarm or shutoff device.
- Set the TRIP POINT READ knob to the TP2 position to display the TP2 temperature trip point.
- Repeat steps 4 through 7 for each thermocouple to be tested.
Trip Point Adjustment
- Apply power to the temperature monitor.
- Set the TRIP POINT READ knob to the 1 position.
- Rotate the trip point adjustment potentiometer TP1 until the display indicates the desired trip point temperature for TP1.
- Repeat steps 2 and 3 for each thermocouple to be set. Turn the TRIP POINT READ knob to the SCAN position to resume operations.
Using Thermocouple Extension Wire
[Caution Symbol] The use of non-thermocouple wire will cause inaccurate temperature sensing and erratic operation. Keep all high voltage wiring such as spark plug or ignition wires away from thermocouples and extension wiring.
If the thermocouple leads are not long enough, thermocouple extension wire is needed. Thermocouple extension wire must be of the same material as the thermocouple lead wires. Metallic-shielded thermocouple wire is recommended for electrical shielding and protection against wear and abrasion.
| Thermocouple Wire Type | Extension P/N | Positive Lead Color Code / Material | Negative Lead Color Code / Material |
|---|---|---|---|
| J (I 0-00-0526) | Jx (00-00-3271) | White / Iron | Red / Constantan |
| K (I 0-00-0527) | Kx (00-00-3272) | Yellow / Chromel | Red / Alumel |
To prevent interference from electrical noise, do not route thermocouple wires in the same conduit or within 12 inches (305 mm) of ignition wires or alternating current conductors. When connecting thermocouple leads, twist the wire connections, then install wire nuts, such as ceramic, which have no metal insert.
Company Information and Warranty
In order to consistently bring you the highest quality, full-featured products, FW Murphy reserves the right to change specifications and designs at any time. FW Murphy product names and the FW Murphy logo are proprietary trademarks. This document, including textual matter and illustrations, is copyright protected with all rights reserved. © 2021 FW Murphy. A copy of the typical warranty may be viewed or printed by going to www.fwmurphy.com/warranty.
Contact Information:
FW Murphy Production Controls
Sales, Services & Accounting
4646 S. Harvard Ave.
Tulsa, OK 74135
Manufacturing
2151 Randon Dyer Road
Rosenberg, TX 77471
5757 Farinon Drive
San Antonio, TX 78249
Domestic Sales & Support
FW Murphy Products
Phone: 918 957 1000
Email: INFO@FWMURPHY.COM
Website: WWW.FWMURPHY.COM
FW Murphy Control Systems & Services
Phone: 281 633 4500
Email: CSS-SOLUTIONS@FWMURPHY.COM
International Sales & Support
China
Phone: +86 571 8788 6060
Email: INTERNATIONAL@FWMURPHY.COM
Latin America & Caribbean
Phone: +1918 770 8775
Email: INTERNATIONAL@FWMURPHY.COM
South Korea
Phone: +82 70 7951 4100
Email: INTERNATIONAL@FWMURPHY.COM
Certifications: FM 668576 (San Antonio, TX - USA), FM 668933 (Rosenberg, TX - USA), FM 523851 (China), TS 589322 (China).
