USER’S MANUAL 6222 12 Channel 24-Bit Ethernet Thermocouple Input Module Measurement Computing 10 Commerce Way Norton, MA 02766 *372922B-01* 372922B-01 Rev 1.1 (508) 946-5100 Fax: (508) 946-9500 info@mccdaq.com www.mccdaq.
Warranty Information Contact Measurement Computing by phone, fax, or e-mail in regard to warranty-related issues: Phone: (508) 946-5100, fax: (508) 946-9500, e-mail: info@mccdaq.com Limitation of Liability Measurement Computing cannot be held liable for any damages resulting from the use or misuse of this product. Copyright, Trademark, and Licensing Notice All Measurement Computing documentation, software, and hardware are copyright with all rights reserved.
CAUTION Using this equipment in ways other than described in this manual can cause personal injury or equipment damage. Before setting up and using your equipment, you should read all documentation that covers your system. Pay special attention to Warnings and Cautions. Note: During software installation, Adobe® PDF versions of user manuals will automatically install onto your hard drive as a part of product support.
Table of Contents F Quick Start Chapter 1 – General Information Introduction …… 1-1 Front Panel …… 1-1 Rear Panel …… 1-1 Connector Backshells and Ferrules …… 1-3 Synchronization …… 1-4 Stacking Plate and Handle Options …… 1-5 Chapter 2 – Block Diagram Chapter 3 – Thermocouple Input 1 Wiring …… 3-1 Circuitry …… 3-2 Accuracy …… 3-2 Accuracy for Different Thermocouple Types …… 3-2 Cold-Junction Temperature Accuracy …… 3-4 Minimizing Thermal Gradients ......
IOtech 6222 Quick Start 12-Channel, 24-Bit, Ethernet, Thermocouple Module Before you get started verify that you have the following items and meet or exceed the minimum requirements listed. 6222 device TR-60U Power Supply and Cable Ethernet Crossover Cable* IOtech Encore Installation CD, Version 1.1 PC: Minimum Requirements: CPU: Intel® Pentium® 4, 3.
Step 3 – Use Encore to Configure the 6222 1. Run the Encore software application (Start>> All Programs>>IOtech>>Encore). 2. In Encore’s main toolbar, click the Hardware Configuration button. The Hardware Configuration window will open. 3. Select your device from the Detected Devices panel. 4. Click the top arrow button to set your device as a Project Device. 5. In Encore’s Hardware Configuration window, look in the Device Information panel to verify that your 6222 has an IP Address.
General Information 1 Introduction …… 1-1 Front Panel …… 1-1 Rear Panel …… 1-1 Connector Backshells and Ferrules …… 1-3 Synchronization …… 1-4 Stacking Plate and Handle Options …… 1-5 Introduction The 6222 is a twelve-channel, 24-bit resolution thermocouple input module device that connects to a host PC‟s Ethernet port (directly or via a network hub/switch) and can be synchronized with other 6000 series devices.
CABLE TIE MOUNTS: Two cable tie mounts are present to provide for strain relief of cables. ETHERNET: The 10/100BaseT Ethernet port can connect to the Ethernet port of the host PC, or to an Ethernet network. The Ethernet connector has two built in LEDs that indicate traffic flow on the network. Refer to Accessories in the Specifications chapter for Ethernet cables available from Measurement Computing. When connecting the unit directly to a PC (i.e.
Connector Backshells and Ferrules Connector backshells are optional protective casings that can be fitted onto the 6222 removable screw-terminal connectors. The backshells provide a thermal shield to reduce the effect of short term ambient temperature changes, and to ensure the accuracy of the cold junction measurement. They also provide mechanical relief and protection for the TC wires and screw terminal connections.
Synchronization To synchronize from two to nine 6000 Series devices, link them together with synchronization cables as indicated in the example figure. Note that the first device (relative to the circuit) will be the Master. The last device connected will be the Terminating Slave. Thus the synchronized devices must proceed sequentially from the Master to Terminating Slave, as indicated in the figures. Note that channel-to-channel phase relationships in a multi-device configuration are not necessarily fixed.
Stacking Plate and Handle Options The 6000 Series device chassis are equipped with feet (on the lower panel) and dimples (on the upper panel) to allow for quick stacking of units. A rigid securing of two or more units together is possible with the use of optional stacking plate kits (190658A-01). Each kit contains two stacking plates and eight screws (8-32 x .500 in., Phillips Flat, 82 Degree). If needed, additional kits can be used to stack and secure more devices.
Block Diagram 2 The 12 thermocouple input channels of the 6222 are set up in three distinct isolated sections. Channels 1 through 4 share a common (COM) and an isolator; channels 5 through 8 and channels 9 through 12 also have this scenario. IOtech 6222 Block Diagram Note 1: Circuits for channel group ‘5 through 8’ and group ‘9 through 12’ look like that of the first group; for which only one channel is illustrated. Each four-channel circuit has one 24-bit ADC and one CJC.
Thermocouple Input 3 Wiring …… 3-1 Circuitry …… 3-2 Accuracy …… 3-2 Accuracy for Different Thermocouple Types …… 3-2 Cold-Junction Temperature Accuracy …… 3-4 Minimizing Thermal Gradients ...... 3-4 Wiring The 6222 has three 10-terminal, detachable screw-terminal connectors. Each of the three connectors supports four thermocouple input channels.
Circuitry The following figure represents a circuit for one channel. The two 10M ohm resistors produce input impedance at the channel’s positive and negative terminals. The gain and offset errors that result from the source impedance of the thermocouple will be negligible for most applications. Other voltage sources (with higher source impedance) can introduce more significant error. Refer to the Specifications chapter for more information about errors that result from source impedance.
6222 User’s Manual Thermocouple Input 3-3
Cold-Junction Temperature Accuracy Heat dissipated by the 6222’s internal circuitry and other nearby heat sources can heat up the unit’s terminals, placing them at a different temperature than that of the cold-junction compensation sensor. The thermal gradient generated across the terminals can cause terminals of different channels to be at different temperatures; the resulting measurement creates errors not only in absolute accuracy but also in the relative accuracy between channels.
Counter Input 4 The 6222 has four 32-bit counter inputs that accept frequency inputs up to 20 MHz. The counter inputs are individually configurable for counter or encoder measurements. You activate each input, enable logging, and configure counter options with Encore. Counter Settings Counter Source The source to use for the counter. Choices are: Internal Clock Timer 1 Timer 2 Digital Line 0 – Digital Line 7 One source can be used in multiple counters.
Encoder Settings Resolution The encoder resolution, which is the number of full quadrature cycles per full shaft revolution (360 mechanical degrees). Choices are: X1 – One count per cycle (default) X2 – Two counts per cycle X4 – Four counts per cycle Encoder Sources There are three encoder sources – A, B, or Z.
CE Compliance & Noise Considerations 5 Overview …… 5-1 Safety Conditions …… 5-1 Emissions/Immunity Conditions …… 5-2 CE Rules of Thumb …… 5-2 Noise Considerations …… 5-3 Overview CE compliant products bear the “CE” mark and include a Declaration of Conformity stating the particular specifications and conditions that apply. The test records and supporting documentation that validate the compliance are kept on file at the factory.
The specific safety conditions for CE compliance vary by product; but general safety conditions include the following bulleted items: The operator must observe all safety cautions and operating conditions specified in the documentation for all hardware used. The host computer and all connected equipment must be CE compliant. All power must be off to the device and externally connected equipment before internal access to the device is permitted.
Noise Considerations Controlling electrical noise is imperative because it can present problems even with the best measurement equipment. Most laboratory and industrial environments suffer from multiple sources of electrical noise. For example, AC power lines, heavy equipment (particularly if turned on and off frequently), local radio stations, and electronic equipment can create noise in a multitude of frequency ranges.
Software, IOtech Encore 6 Encore is the premier Out-of-the-Box data acquisition software package and is included with each 6000 Series module. Encore combines ease of use with advanced functionality, including customizable data layouts, powerful analysis, and reporting capabilities. Instead of having a program to log data, another to analyze, and a third to develop report data, Encore includes the functionality of all three into one package, thus shortening the learning curve, and saving time and cost.
Product Care and Customer Support 7 Electrostatic Discharge (ESD) Handling Notice…… 7-1 Product Care …… 7-1 The ReadMe File and the Install CD-ROM …… 7-2 Customer Support …… 7-2 Electrostatic Discharge (ESD) Handling Notice The discharge of static electricity can damage some electronic components. Semiconductor devices are especially susceptible to ESD damage.
The Readme File and the Install CD-ROM The Install CD-ROM includes a ReadMe file. The ReadMe may contain late-breaking information that does not appear in other documentation. During installation you should review the ReadMe file when prompted to by the program. The Install CD-ROM includes: Windows drivers Encore, interactive measurement software* User documentation in Adobe® PDF format Customer Support If you need to report problems or request product support . . .
Specifications – 6222 8 The following specifications are typical for the temperature range -40 to 50°C, unless otherwise noted. Input Characteristics Number of channels............................................................ 12 thermocouple channels 3 internal cold-junction compensation channels ADC resolution................................................................... 24 bits Type of ADC .....................................................................
Specifications are subject to change without notice. Removable screw-terminal blocks ..................................... 3 blocks, 4 channels per block, 10 terminals per block Screw-terminal wiring ........................................................ 12 to 24 AWG wire with 10mm (0.39 in.) section ............................................................................................ of insulation stripped from connection end Torque for screw terminals ............................................
Specifications are subject to change without notice. Counter Input Channels ............................................................................. Up to 4 independent Resolution........................................................................... 32-bit Input frequency................................................................... 20 MHz maximum Input characteristics ............................................................ 10 k Ω pull-down Trigger level ................................
Specifications are subject to change without notice. Calibration Calibration interval ............................................................. 1 year Contact Measurement Computing for information regarding calibration service. Note: The above calibration information pertains to hardware calibration, not to be confused with “user” or “software” calibration.
