ANALOG DEVICES 7B27 handbook
Contents
1. 148 F to 1400 F 1Vto 5V 7B27 J 01 2 Type J 100 C to 100 C 148 F to 1400 F O V to 10 V 7B27 J 10 1 Type J 0 C to 200 C 32 F to 392 F 1 Vtot5V 7B27 J 10 2 Type J 0 C to 200 C 32 F to 392 F 0 V to 10 V 7B27 J 11 1 Type J 0 C to 400 C 32 F to 752 F 1Vtot5V 7B27 J 11 2 Type J 0 C to 400 C 32 F to 752 F OVto 10V 7B27 J 12 1 Type J 0 C to 600 C 32 F to 1112 F 1Vto 5V 7B27 J 12 2 Type J 0 C to 600 C 32 F to 1112 F 0 V to 10 V 7B27 J 13 1 Type J 300 C to 600 C 572 F to 1112 F 1 Vtot5V 7B27 J 13 2 Type J 300 C to 600 C 572 F to 1112 F OVtot10V 7B27 K 02 1 Type K 100 C to 1350 C 148 F to 2462 F 1 Vtot5V 7B27 K 02 2 Type K 100 C to 1350 C 148 F to 2462 F OVto 10 V 7B27 K 20 1 Type K 0 C to 300 C 32 F to 572 F 1Vto 5V 7B27 K 20 2 Type K 0 C to 300 C 32 F to 572 F OV to 10 V 7B27 K 21 4 K to 1112 F A 5V 7B27 K 21 to 1112 F C O Bs 10V 7B27 K 22 1 Type K 0 C to 1200 C 32 F to 2192 F 1 Vtot5V 7B27 K 22 2 Type K 0 C to 1200 C 32 F to 2192 F 0 V to 10 V 7B27 K 23 1 Type K 600 C to 1200 C 148 F to 1400 F 1Vto 5V 7B27 K 23 2 Type K 600 C to 1200 C 148 F to 1400 F OVto 10 V 7B27 T 03 1 Type T 100 C to 400 C 148 F to 752 F 1Vto 5V 7B27 T 03 2 Type T 100 C to 400 C 148 F to 752 F OVto 10 V 7B27 E 04 1 Type E 0 C to 900 C 32 F to 1652 F 1Vto 5V 7B27 E 04 2 Ty2. 005 43 18 0 127 0 30 0 01 7 6 0 25 BACKPLANE 0 200 t 0 015 5 08 10 381 18 2 0 127 Figure 3 7B27 Input Field Connections Table 1 Pin Function Descriptions 0 200 5 08 Pin Input Module Function Output Module Function 0 400 10 21 No 0 SENSOR INPUT NOT USED xai d 1 INPUT HIGH OUTPUT HIGH 0 900 22 9 2 INPUT LOW OUTPUT LOW 1 100 27 94 3 POWER SUPPLY DC POWER SUPPLY DC Mp 4 OUTPUT VOLTAGE INPUT VOLTAGE 5 OUTPUT amp POWER INPUT AND POWER BOTTOM ER COMMON COMMON Figure 4 Model 7B Series Module with pin out assignments ww BDI C comi AL ESD CAUTION ESD electrostatic discharge sensitive device Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection Although this product features proprietary ESD protection circuitry permanent damage may occur on devices subjected to high energy electrostatic discharges Therefore proper ESD precautions are recommended to avoid performance degradation or loss of functionality WARNING P ESD SENSITIVE DEVICE Rev 0 Page 6 of 8 1827 OUTLINE DIMENSIONS 0 883 14 3 po 1 663 42 24 pon PAN HEAD PHILLIPS RECESSED 44 HEAD 0 219 PER IH STDS 5 563 0080 4 2 032 1 32 0 03 33 53 0 76 2 114 0 02 53 8 0 87 0 095 2 41 2 32 10 09 0 06 58 92 2 3 1 52 FASTENING SCREW DIA 6 PLCS PROVIDED WITH MOD
3. signals from thermocouples RTDs current loop powered transmitters and other process control signals The 7B Series modules amplify linearize isolate protect and convert the transducer output signals to standardized analog inputs for high level analog I O subsystems The 7B Series Subsystem consists of 19 inch rack compatible hardware model AC 1363 with universal mounting backplane and a family of plug in up to 16 per backplane input and output signal conditioning modules Four eight and sixteen channel backplanes are available Each backplane incorporates screw terminals for easy power connections and field wiring and includes a 25 pin D type connector for interfacing the high level single ended voltage outputs to the user s equipment Gold plated sockets are provided on each channel of the backplane to ensure the reliability of each modules electrical connection One Technology Way P O Box 9106 Norwood MA 02062 9106 U S A Tel 781 329 4700 www analog com Fax 781 326 8703 2004 Analog Devices Inc All rights reserved GENERAL DESCRIPTION The 7B27 is a single channel signal conditioning module that interfaces amplifies and filters input voltages from a J K T E R S or B type thermocouple and provides an isolated up to 100 V rms and protected precision output of either 1 V to 5 V or 0 V to 10V linear with input voltage High accuracy internal cold junction compensation and a predictable upscale open c
4. ANALOG DEVICES FEATURES Interfaces amplifies and filters input voltages from a J K T E R S or B type thermocouple Provides an isolated and protected precision output of either 1 V to 5 V or 0 V to 10 V Operates with a nominal 24 VDC supply All 7B27 series modules are mix and match and Hot Swappable APPLICATIONS Industrial signal conditioning Industrial signal isolation Industrial signal filtering PRODUCT OVERVIEW The 7B Series of signal conditioners feature small size low cost and a wide output voltage range for a variety of applications including process control and factory floor environments The single channel 7B modules accept inp transducer 85 C indu rated for a nominal power supply input of 24 VDC and for maximum flexibility they will accept supply voltages in the 14 VDC to 35 VDC range The input modules with the exception of the 7B21 provide a high level output voltage that is factory configured for either the 1 V to 5 V or 0 V to 10 V range The 7B21 is a unity gain isolated input module with an input output range of 10V Output modules are available that provide either isolated process current or isolated bipolar voltage output Model 7B39 converts either a 1 V to 5 V input to a 4 to 20 mA output or a 0 V to 10 V input to a 0 20 mA output The input output ranges of the 7B39 are factory configured The 7B22 is a unity gain module that provides an isolated 10V output signal All m
5. ULE Figure 5 Outline Dimensions Rev 0 Page 7 of 8 1821 NOTES ww BOM C com AL 2004 Analog Devices Inc All rights reserved Trademarks and ANALOG registered trademarks are the property of their respective companies www analo g com uvm La DEVICES Rev 0 Page 8 of 8
6. ircuit indication provide a complete signal conditioning solution The 7B27 is mix and match and hot swappable with other 7B Series input modules so can be inserted or removed from any socket in the same backplane without disturbing power Model 7B27 is rated to operate with a nominal 24 VDC supply The three input pins of Model 7B27 are protected up to 30 VDC A one pole 3 Hz filter preconditions the thermocouple signal prior to amplification provided by a low drift input amplifier Cold junction compensation CJC is implemented using a thermistor temperature sensor embedded under the input screw terminal block on a 7B Series backplane A voltage reference source acts to offset the thermocouple signal in accordance with the specified lower bound on the input temperature range A current source provides the upscale open 7B27 circuit indication Amplitude modulation is used to implement transformer isolation 100 V rms continuous Isolated front end circuitry power is supplied by a DC DC converter The output section contains a demodulator a two pole low pass filter 3 dB 3 Hz a buffer amplifier and a power oscillator The two pole output filter and subsequent buffer ensures that a low noise low impedance lt 1Q signal is available at the output to drive loads down to 2 kQ Figure 2 Rev 0 Page 2 of 8 1827 7B27 Models Available Model Input Type Input Range Output Range 7B27 J 01 1 Type J 100 C to 100 C
7. odules have a universal pin out and may be readily hot swapped under full power without disrupting field wiring Each module accepts analog transducer signals and transfers them to a process control or factory data collection system without the inherent noise non linearity drift and extraneous voltages which frequently accompany the signals Rev 0 Information furnished by Analog Devices is believed to be accurate and reliable However no responsibility is assumed by Analog Devices for its use nor for any infringements of patents or other rights of third parties that may result from its use Specifications subject to change without notice No license is granted by implication or otherwise under any patent or patent rights of Analog Devices Trademarks and registered trademarks are the property of their respective companies Isolated Thermocouple Input 1821 FUNCTIONAL BLOCK DIAGRAM ISOLATED INPUT SECTION ISOLATION OUTPUT SECTION BARRIER Figure 1 7B27 Functional Block Diagram The modules feature a maximum nonlinearity of 0 02 and are factory calibrated to guarantee a maximum accuracy specification of 0 1 The 7B Series offers up to 1500 V rms continuous common mode voltage isolation and 120 V rms of field wiring input protection The power supplies necessary to drive each of the individual modules input gircuit einternally isolated ena hannel to channel isolation o The modules directly accept analog
8. pe E 0 C to 900 C 32 F to 1652 F 0 V to 10 V 7B27 R 05 1 Type R 0 C to 1750 C 32 F to 3182 F 1 Vtot5V 7B27 R 05 2 Type R 0 C to 1750 C 32 F to 3182 F 0 V to 10 V 7B27 S 06 1 Type S 0 C to 1750 C 32 F to 3182 F 1Vto 5V 7B27 S 06 2 Type S 0 C to 1750 C 32 F to 3182 F 0 V to 10 V 7B27 B 07 1 Type B 0 C to 1800 C 32 F to 3272 F 1Vto 5V 7B27 B 07 2 Type B 0 C to 1800 C 32 F to 3272 F OV to 10 V Rev 0 Page 3 of 8 7B27 Specifications typical 23 C 5 C and V 24 V dc Description Input Ranges Thermocouple Types Standard Temperature Ranges Custom Ranges Output Range Options R gt 2 kQ Initial 25 C Nonlinearity Input Offset vs Temperature Zero Suppression vs Temperature Span vs Temperature Output Offset vs Temperature Cold Junction Compensation Accuracy over 5 C to 45 C ambient J K T E R S B Refer to Model Table Not Available 1 V to 5 V or 0 V to 10 V Accuracy 0 01 Span 40 1 Span maximum 0 02 Span maximum 0 5uV C 0 005 V2 C 35 ppm C 0 002 Span C 1 0 C maximum Input Bias Current A Power ON Power OFF 5 MHz Bandwidth 10 Hz to 100 kHz Bandwidth 0 1 Hz to 10 Hz Bandwidth Bandwidth 3 dB Output Rise Time 10 to 90 Span Input to Output and Power Input to Output and Power 50 60 Hz Normal Mode Rejection 50 60 Hz Input Protection Input Transien
9. t Protection Output Resistance Voltage Output Protection Voltage Range Operating 10 MQ 30 kQ minimum Output Noise 6 mV peak 0 4 mV rms 0 6 uV peak 3 Hz 150 ms Common Mode Voltage CMV 100 V rms continuous Common Mode Rejection CMR 160 dB 60 dB 30 V dc continuous ANSI IEEE C376 90 1 1989IEEE STD 472IEC 255 4 Class ll 10 Continuous Short to Ground Power Supply 14 V dc to 35 V dc Rev 0 Page 4 of 8 Model 7B27 om AD 1B27 1821 Current 25 mA maximum Sensitivity 0 0001 of Vs Mechanical Dimensions 1 663 x 2 11 x 0 563 42 24 mm x 53 6 mm x 14 3 mm Environmental Temperature Range Operating 40 C to 85 C Storage 40 C to 85 C Relative Humidity 24 hours 0 to 90 60 C non condensing ESD Sensitivity IEC 801 2 Level 2 RFI Susceptibility 0 5 Span error 400 MHz 5 Watt 3 ft Warm up time required to meet specifications is approximately 10 minutes Contact factory for OEM requirements Includes the combined effects of repeatability hysteresis and nonlinearity Nonlinearity is calculated using best fit straight line method z is the nominal input voltage that results in a 0 V output When used with the CJC temperature sensor provided on each channel of 7B Series Backplanes Specifications subject to change without notice ww BDI C com AL Rev 0 Page 5 of 8 1821 PIN CONFIGURATIONS AND FUNCTIONAL DESCRIPTIONS 1 700 0
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ANALOG DEVICES 7B27 handbook