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Related Manuals for Measurement Computing IOtech 6224
Summary of Contents for Measurement Computing IOtech 6224
- Page 1 USER’S MANUAL 6224 12 Channel 24-Bit Half/Full-Bridge Analog Input Ethernet High-speed, Strain Gauge Input Module Measurement Computing 10 Commerce Way Norton, MA 02766 *372738C-01* (508) 946-5100 Fax: (508) 946-9500 372738C-01 info@mccdaq.com Rev 1.2 www.mccdaq.com...
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Page 2: Warranty Information
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. No part of this product may be copied, reproduced or transmitted by any mechanical, photographic, electronic, or other method without Measurement Computing’s prior written consent. - Page 3 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: ®...
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Page 4: Table Of Contents
Product Care …… 8-1 The Readme Files and the Install CD-ROM …… 8-2 Customer Support …… 8-2 Chapter 9 – Specifications, IOtech 6224 For information regarding digital circuitry, refer to the Digital I/O section of the Specifications chapter. 6224 User’s Manual... -
Page 5: Quick Start
In this scenario the 6224 is connected directly to an Ethernet port on a host computer. 1. Connect the Ethernet cable to the Ethernet jack on the 6224. If connecting directly to the PC, as indicated above (i.e., instead of connecting to a network hub) you must use an Ethernet crossover cable. - Page 6 RJ50 jacks. Using RJ45 plugs can cause permanent damage to RJ50 pins 1 and 10, thus disabling shunt calibration. The 6224 has 12 analog channel inputs (CH1 through CH12) via front panel RJ50 jacks and 8 digital I/O lines via rear panel DB9 connector.
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Page 7: Chapter 1 - General Information
RJ50 Cables (CN-272-01) …… 1-7 Introduction The 6224 is a twelve-channel, 24-bit resolution strain measurement device that connects to a host PC‟s Ethernet port. The device is used to measure half-bridge and full-bridge sensors and can be synchronized with other 6000 series devices. -
Page 8: Rear Panel
Terminating Slave Unit. The assignment is made in Encore. Refer to the following section, Synchronization, for details. Refer to Accessories in the Specifications chapter for SYNC cables available from Measurement Computing. Up to nine units can be synchronized. The total combined length of the SYNC cables is not to exceed 2.438m (8 ft). -
Page 9: Analog Circuitry
1 on page 3-1 and in the block diagram (page 2-1). You can connect the 6224 to a device that is biased at any voltage within the unit‟s rejection range of earth ground. The Specifications chapter includes additional information. -
Page 10: Synchronization
Reference Note: For detailed information refer to the Encore software‟s Comprehensive Help. You can access the Help from within Encore. After doing so, navigate to the synchronization related topic as follows from the Help‟s Contents panel: Configuring Hardware>>Hardware Setup>>Synchronizing Devices. 6224 User’s Manual General Information... -
Page 11: Stacking Plate And Handle Options
Attach the handle to a 6000 Series device using the two outer holes on the device and the two 1/4-20 x 7/8 in., Phillips Pan Head screws (provided). Tighten the screws snug, but do not over-tighten. 6224 User’s Manual General Information... - Page 12 The CN-270 components each house a 350 ohm resistor. You will need an RJ50 M/M cable to use any of the Quarter-Bridge components with an 6224. Measurement Computing offers a pack of four RJ50 M/M, 1 meter (3.28ft) cables (see upcoming RJ50 Cables section).
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Page 13: Rj50 12-Pin Screw Terminal Accessory (Cn-268)
RJ50 pins 1 and 10, thus disabling shunt calibration. RJ50 Cables (CA-272-01) When connecting a cable from an 6224 RJ50 jack to an associated Measurement Computing accessory (CN-268, CN-269, or CN-270), be sure to only use RJ50 M/M cables. Use of another cable type can damage RJ50 pins. -
Page 14: Chapter 2 - Block Diagram
Block Diagram 6224 User’s Manual Block Diagram... -
Page 15: Chapter 3 - Pinouts And Connections
For CH9, CH10, CH11, and CH12, the signal values of pins 6, 7, and 9 are shared. Note 2: The 6224 only supports TEDS if the acquisition software being used supports TEDS. Do not connect an RJ45 plug to an RJ50 jack. Using RJ45 plugs can cause permanent damage to RJ50 pins 1 and 10, thus disabling shunt calibration. -
Page 16: Connecting Teds Channels
Full-Bridge Notes: (1) When connecting a bridge to the 6224, the following connections are optional: RS+, RS-, SC, T+, T-. (2) For the half-bridge and quarter-bridge, there is no AI- signal to connect. (3) To create a quarter-bridge, place an external resistor across the two SC lines of a half-bridge. Measurement Computing offers two external Quarter-Bridge accessories, CN-269 (120 ohm) and CN-270 (350 ohm). -
Page 17: Shunt Calibration
2.5V to 10 V are common. Encore’s selections for internal excitation are 2.5V, 3.3V, 5V, and 10V, and each of the three internal voltage sources can provide up to 150 mW of excitation power. The 6224 automatically reduces internal excitation voltages, as needed, to stay below 150mW. -
Page 18: External Excitation Voltage Sources
6224; thus all twelve channels can receive external excitation. External Excitation Voltage Sources The 6224 front panel includes three 4-pin connectors which provide a means of connecting external excitation voltage sources. Each external voltage source serves 4 channels, as follows; the first source applies excitation voltage to CH1 through CH4, the second to CH5 through CH8, and the third to CH9 through CH12. -
Page 19: Mounting And Securing Connections
For a strain measurement system "mechanical noise" should also be a consideration. Movement in the connection system could translate to errors in the measurement. Care should be taken to ensure the 6224, RJ50 cables, and dongles are physically secured to prevent relative movement. -
Page 20: Counter Settings
Counter Input The 6224 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. -
Page 21: Encoder Settings
When set for Encoder measurements, the device can count "negative" values; that is, when counting down, the encoder will continue counting down below 0. This capability is useful when calculating the position of an encoder. 6224 User’s Manual Counter Input... -
Page 22: Overview
CE Compliance & Noise Considerations 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. -
Page 23: Emissions/Immunity Conditions
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. -
Page 24: Noise Considerations
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. -
Page 25: Chapter 6 - Software, Iotech Encore
.wmv Readme .html Start>>All Programs>>IOtech>>6000 Series>> All 6000 Series user’s manuals .pdf Should you have questions or need support you can contact Measurement Computing through one of the means provided on the front cover of this manual. 6000 Series Software... - Page 26 Full-Bridge II …… 7-8 Full-Bridge III …… 7-9 Pressure/Force …… 7-10 Introduction The 6224’s channels can be set to measure strain or pressure/force. This chapter provides schematics of bridge circuits applicable to the 6224. 6224 User’s Manual Strain and Pressure/Force...
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Page 27: Strain Gage Types Explained
Poisson’s ratio, defined as the negative ratio of transverse strain to axial strain (longitudinal) strain. is the measured signal’s voltage. is the excitation voltage. is the voltage ratio that is used in the voltage to strain conversion equations and is defined by the following equation: (strained) (unstrained) 6224 User’s Manual 7-2 Strain and Pressure/Force... -
Page 28: Quarter-Bridge I
R4 is the active strain-gauge element measuring tensile strain (+ ). Supplemental Information Data from strain channels (Quarter-Bridge I) is converted to strain units using the following equation: 4 V r GF 1 2 V r 6224 User’s Manual Strain and Pressure/Force... -
Page 29: Quarter-Bridge Ii
R4 is the active strain-gauge element measuring tensile strain (+ ). Supplemental Information Data from strain channels (Quarter-Bridge II) is converted to strain units using the following equation: 4 V r GF 1 2 V r 6224 User’s Manual 7-4 Strain and Pressure/Force... -
Page 30: Half-Bridge I
R4 is the active strain-gauge element measuring tensile strain (+ ). Supplemental Information Data from strain channels (Half-Bridge I) is converted to strain units using the following equation: 4 V r GF 1 ( 2 V r 6224 User’s Manual Strain and Pressure/Force... -
Page 31: Half-Bridge Ii
R3 is the active strain-gauge element measuring compressive strain (– ). R4 is the active strain-gauge element measuring tensile strain (+ ). Supplemental Information Data from strain channels (Half-Bridge II) is converted to strain units using the following equation: 2 V r 6224 User’s Manual 7-6 Strain and Pressure/Force... -
Page 32: Full-Bridge I
R3 is an active strain-gauge element measuring compressive strain (– ). R4 is an active strain-gauge element measuring tensile strain (+ ). Supplemental Information Data from strain channels (Full-Bridge I) is converted to strain units using the following equation: 6224 User’s Manual Strain and Pressure/Force... -
Page 33: Full-Bridge Ii
R4 is an active strain-gauge element measuring tensile strain (+ ). Supplemental Information Data from strain channels (Full-Bridge II) is converted to strain units using the following equation: 2 V r GF 1 ( 6224 User’s Manual 7-8 Strain and Pressure/Force... -
Page 34: Full-Bridge Iii
R4 is an active strain-gauge element measuring the tensile strain (+ ). Supplemental Information Data from strain channels (Full-Bridge III) is converted to strain units using the following equation: 2 V r GF 1 ( 6224 User’s Manual Strain and Pressure/Force... -
Page 35: Pressure/Force
Data from pressure/force channels is converted using the following equation: V ex Where: P = Pressure S = the sensitivity of the gauge in mV/V = the Full Scale Output (Output = the measured voltage = the excitation voltage 6224 User’s Manual 7-10 Strain and Pressure/Force... -
Page 36: Chapter 8 - Product Care And Customer Support
Product Care and Customer Support Electrostatic Discharge (ESD) Handling Notice…… 8-1 Product Care …… 8-1 The ReadMe File and the Install CD-ROM …… 8-2 Customer Support …… 8-2 Electrostatic Discharge (ESD) Handling Notice The discharge of static electricity can damage some electronic components. Semiconductor devices are especially susceptible to ESD damage. -
Page 37: The Readme Files And The Install Cd-Rom
Note: Before calling for assistance, take a few minutes to read all parts of the manual that may be relevant to the problem. Also, please review the troubleshooting material. You can reach Measurement Computing by one of the following means: Phone:... -
Page 38: Input Characteristics
Specifications – 6224 The following specifications are typical for the range –40 to 50°C, unless otherwise noted. Input Characteristics Number of analog channels ..........12 Bridge completion Full and half ..............Internal Quarter ................. External ADC resolution ..............24 bits Type of ADC .............. - Page 39 Internal voltage ............2.5 V, 3.3 V, 5.0 V, 10.0 V Internal power ............. 450 mW max External voltage ............2 V to 10 V Rejection by analog pre-filter of signal frequencies at oversample rate. Measured with a balanced cable. Shielded cables may be significantly unbalanced. 6224 User’s Manual Specifications...
- Page 40 (may be externally pulled up to 5.6V without damage) Output resistance: ............... 40Ω Output Levels: (see 6000 Series Digital Output graph below) Sampling: 1 MHz max ................Input / Output Circuit continuous Output timing: ..............Outputs are always written asynchronously. 6224 User’s Manual Specifications...
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Page 41: Physical Characteristics
(10.9” W x 6.685” D x 1.2” H) Environmental 6224 units are intended for indoor use only but may be used outdoors if installed in a suitable enclosure. Operating temperature ............-40 to 50°C Storage temperature ............-40 to 75°C Ingress protection ............... - Page 42 Hub using a crossover cable may prevent that network link from functioning. Some modern routers have become an exception by including logic to detect the crossover cable and allow the network link to function. 6224 User’s Manual Specifications...
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