3B45-CUSTOM

3B45-CUSTOM Datasheet

Part	Datasheet
3B45-CUSTOM	3B45-CUSTOM (pdf)

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Interfaces, isolates, & filters frequency inputs. The 3B45 accepts full-scale inputs from 25 to 1100 Hz The 3B46 accepts full-scale inputs from 520 Hz to 25 kHz. Modules provide simultaneous precision voltage and current outputs. Modules circuitry can withstand 130v rms at the input screwterminals. All 3B45 & 3B46 series modules are mix-and-match and Hot Swappable. Industrial signal conditioning Industrial signal isolation Industrial signal filtering PRODUCT OVERVIEW The 3B Series of Signal Conditioning I/o Subsystems provide a low-cost, versatile method of transferring analog transducer signals to a data acquisition, monitoring or control system without the inherent noise, non-linearity, drift and extraneous voltages. The modules are designed to directly accept analog signals from Thermocouples, RTD’s, AC and DC Strain Gages, Torque Transducers, Frequency Transducers, LVDTs, millivolt or process current signals. The modules amplify, isolate, linearize and convert the transducer output signals to standardized analog inputs for high-level analog I/O subsystems. The 3B Series Subsystem consists of a 10” relay rack with universal mounting backplane and a family of plug-in up to 16 per rack input and output signal conditioning modules. Eight and four channel backplanes are also available. Each backplane incorporates screw terminals for sensor inputs and current outputs and a 26-pin connector for high-level singleended voltage outputs to the user’s equipment. The input modules feature complete signal conditioning circuitry optimized for specific sensors or analog signals and provide two simultaneous high-level analog outputs 0 to +10V or +10V and 4-20 mA or 0-20 mA . 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 Frequency Input 3B45 / 3B46 FUNCTIONAL BLOCK DIAGRAM Figure 3B45 & 3B46 Functional Block Diagram Output modules accept 0 to +10V or +10V single-ended signals and provide an isolated 4-20 mA or 0-20 mA process signal. All modules feature a universal pin-out and may be readily hot-swapped under full power and interchanged without disrupting field wiring. The Analog Devices 3B Series Signal Conditioning Subsystem is designed to easily handle signal conditioning problems in measurement and control applications. Some typical uses are in microcomputer-based data acquisition systems, programmable controllers, analog recorders, dedicated control systems, and any other applications where monitoring of temperature, pressure, flow and analog signals are required. Since each input module features two simultaneous outputs, the voltage output can be used to provide an input to a microprocessor-based data acquisition or control system while the current output can be used for analog transmission, operator interface, or an analog backup system. Each input module is a single-channel signal conditioner which plugs into a socket on the backplane and accepts its signal from the input screw terminals. All input modules provide input protection, amplification and filtering of the input signal, accuracy of low drift of +1 uV/ oC low-level input modules , and feature two high-level analog outputs that are compatible with most process instrumentation. The isolated input modules also provide +1500 V peak isolation. The choice of a specific 3B module depends upon the type of input signal. Input modules are available to accept millivolt, volt, process current, thermocouple, RTD, AC and DC strain gage, frequency and LVDT inputs. The voltage output of each module is available from the system I/O connector while the current output is available on the output screw terminals. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: Fax 2004 Analog Devices, Inc. All rights reserved. The 3B45 and 3B46 are single-channel isolated frequency input moduels which produce simultaneous precision voltage and current outputs proportional to input frequency. Model 3B45 accepts full-scale inputs ranging from 25 Hz to 1100 Hz, while Model 3B46 accepts full-scale input from 520 Hz to 25kHz. Both models enable the user to set the threshold to either 0 V for zero crossing signals or V for positive level signals , and the hysteresis to either 0 or +4 V. Hysteresis can be set for any value within this range using the supplied AC1310 ranging card. The 3B45 and 3B46 shield their computer side outputs from damage and loss of signal integrity from field-side overvoltage faults, withstanding up to 220 V rms at their input terminals. The current output withstands 130 V rms without damage and interfaces user equipment through screw terminal connections. In addition, all 3B45 and 3B46 models are plug-in, mix-and-match and hot-swappable, so each can be inserted or removed from any socket in the same backplane without disrupting system power. 3B Series Custom-Ranging Program Externallyprogrammable Model 3B45-00 and 3B46-00 enable the user to configure a special input range by using the supplied plug-on AC1310 ranging card, which houses user-supplied resistors to determine hysteresis, zero and span. To facilitate selecting resistors, a Windows program, 3B-CUSTOM, calculates resistor values based on the user-desired input/output ranges. The 3B45 and 3B46 compare the input signal to the user- 3B45 / 3B46 selected threshold Vt and hysteresis Vh . Signals of virtually any wave shape that exceed the combined threshold and hysteresis levels Vt + Vh will trigger a comparator at a rate determined by the input frequency. The comparator output is then transmitted across a proprietary transformer-coupled isolation barrier. A demodulator on the computer side of the signal transformer recovers the original signal, which is then filtered and buffered to provide a low-noise, low-impedance output voltage this output also drives a voltage-to-current V/I converter to provide a simultaneous current output for interfacing versatility. Setting the threshold value is a simple matter of externally wiring to the 3B Series backplane screw terminals. The threshold for measuring a zero-crossing voltage waveform such as sine waves can be set to 0 volts by connecting terminal 3 to terminal The threshold for a positive level signal such as a TTL or pulse train waveform can be set at V by connecting terminals 1 and Hysteresis for both input signal types is set at 0 V, but can be changed to +4V by removing the jumper that is installed on the AC1310 ranging card shipped with each unit. Figure 2 3B45 and 3B46 Models Available Model 3B45-00 Input Range Externally Programmable2 3B45-01 0 Hz to 25 Hz 3B45-02 0 Hz to 300 Hz 3B45-Custom Model 3B46-00 Input Range Externally Programmable2 3B46-01 0 kHz to kHz 3B46-02 0 kHz to 3 kHz 3B46-03 0 kHz to 25 kHz 3B46-Custom

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Interfaces, isolates, & filters frequency inputs. The 3B45 accepts full-scale inputs from 25 to 1100 Hz The 3B46 accepts full-scale inputs from 520 Hz to 25 kHz. Modules provide simultaneous precision voltage and current outputs. Modules circuitry can withstand 130v rms at the input screwterminals. All 3B45 & 3B46 series modules are mix-and-match and Hot Swappable.

Industrial signal conditioning Industrial signal isolation Industrial signal filtering

PRODUCT OVERVIEW

The 3B Series of Signal Conditioning I/o Subsystems provide a low-cost, versatile method of transferring analog transducer signals to a data acquisition, monitoring or control system without the inherent noise, non-linearity, drift and extraneous voltages. The modules are designed to directly accept analog signals from Thermocouples, RTD’s, AC and DC Strain Gages, Torque Transducers, Frequency Transducers, LVDTs, millivolt or process current signals. The modules amplify, isolate, linearize and convert the transducer output signals to standardized analog inputs for high-level analog I/O subsystems. The 3B Series Subsystem consists of a 10” relay rack with universal mounting backplane and a family of plug-in up to 16 per rack input and output signal conditioning modules.

Eight and four channel backplanes are also available. Each backplane incorporates screw terminals for sensor inputs and current outputs and a 26-pin connector for high-level singleended voltage outputs to the user’s equipment.

The input modules feature complete signal conditioning circuitry optimized for specific sensors or analog signals and provide two simultaneous high-level analog outputs 0 to +10V or +10V and 4-20 mA or 0-20 mA .

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 Frequency Input 3B45 / 3B46

FUNCTIONAL BLOCK DIAGRAM

Figure 3B45 & 3B46 Functional Block Diagram

Output modules accept 0 to +10V or +10V single-ended signals and provide an isolated 4-20 mA or 0-20 mA process signal. All modules feature a universal pin-out and may be readily hot-swapped under full power and interchanged without disrupting field wiring.

The Analog Devices 3B Series Signal Conditioning Subsystem is designed to easily handle signal conditioning problems in measurement and control applications. Some typical uses are in microcomputer-based data acquisition systems, programmable controllers, analog recorders, dedicated control systems, and any other applications where monitoring of temperature, pressure, flow and analog signals are required. Since each input module features two simultaneous outputs, the voltage output can be used to provide an input to a microprocessor-based data acquisition or control system while the current output can be used for analog transmission, operator interface, or an analog backup system.

Each input module is a single-channel signal conditioner which plugs into a socket on the backplane and accepts its signal from the input screw terminals. All input modules provide input protection, amplification and filtering of the input signal, accuracy of low drift of +1 uV/ oC low-level input modules , and feature two high-level analog outputs that are compatible with most process instrumentation. The isolated input modules also provide +1500 V peak isolation.

The choice of a specific 3B module depends upon the type of input signal. Input modules are available to accept millivolt, volt, process current, thermocouple, RTD, AC and DC strain gage, frequency and LVDT inputs. The voltage output of each module is available from the system I/O connector while the current output is available on the output screw terminals.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel:

Fax 2004 Analog Devices, Inc. All rights reserved.

The 3B45 and 3B46 are single-channel isolated frequency input moduels which produce simultaneous precision voltage and current outputs proportional to input frequency. Model 3B45 accepts full-scale inputs ranging from 25 Hz to 1100 Hz, while Model 3B46 accepts full-scale input from 520 Hz to 25kHz. Both models enable the user to set the threshold to either 0 V for zero crossing signals or V for positive level signals , and the hysteresis to either 0 or +4 V. Hysteresis can be set for any value within this range using the supplied AC1310 ranging card. The 3B45 and 3B46 shield their computer side outputs from damage and loss of signal integrity from field-side overvoltage faults, withstanding up to 220 V rms at their input terminals. The current output withstands 130 V rms without damage and interfaces user equipment through screw terminal connections. In addition, all 3B45 and 3B46 models are plug-in, mix-and-match and hot-swappable, so each can be inserted or removed from any socket in the same backplane without disrupting system power.
3B Series Custom-Ranging Program Externallyprogrammable Model 3B45-00 and 3B46-00 enable the user to configure a special input range by using the supplied plug-on AC1310 ranging card, which houses user-supplied resistors to determine hysteresis, zero and span. To facilitate selecting resistors, a Windows program, 3B-CUSTOM, calculates resistor values based on the user-desired input/output ranges.

The 3B45 and 3B46 compare the input signal to the user-
3B45 / 3B46
selected threshold Vt and hysteresis Vh . Signals of virtually any wave shape that exceed the combined threshold and hysteresis levels Vt + Vh will trigger a comparator at a rate determined by the input frequency. The comparator output is then transmitted across a proprietary transformer-coupled isolation barrier. A demodulator on the computer side of the signal transformer recovers the original signal, which is then filtered and buffered to provide a low-noise, low-impedance output voltage this output also drives a voltage-to-current V/I converter to provide a simultaneous current output for interfacing versatility.

Setting the threshold value is a simple matter of externally wiring to the 3B Series backplane screw terminals. The threshold for measuring a zero-crossing voltage waveform such as sine waves can be set to 0 volts by connecting terminal 3 to terminal The threshold for a positive level signal such as a TTL or pulse train waveform can be set at V by connecting terminals 1 and Hysteresis for both input signal types is set at 0 V, but can be changed to +4V by removing the jumper that is installed on the AC1310 ranging card shipped with each unit.

Figure 2
3B45 and 3B46 Models Available

Model 3B45-00

Input Range Externally Programmable2
3B45-01
0 Hz to 25 Hz
3B45-02
0 Hz to 300 Hz
3B45-Custom

Model 3B46-00

Input Range Externally Programmable2
3B46-01
0 kHz to kHz
3B46-02
0 kHz to 3 kHz
3B46-03
0 kHz to 25 kHz
3B46-Custom

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Datasheet ID: 3B45-CUSTOM 517682