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| DI-8B45 Frequency Input Modules FEATURES * Accepts Frequency Input Signals 0 to 100kHz * TTL or Zero-Crossing Signal Inputs * High Level Voltage Outputs * 1500Vrms Transformer Isolation * ANSI/IEEE C37.90.1 Transient Protection * Input Protected up to 240VAC Continuous * 100dB CMR * 70dB NMR at 60Hz * 0.10% Accuracy * 0.05% Linearity * Low Drift with Ambient Temperature * UL, CSA, FM and CE Certifications Pending * Mix and Match Module Types SPECIFICATIONS Input Range Input Threshold Typical at TA = +25C and +5V Power DI-8B45 0Hz to 100kHz Zero Crossing 200mVp-p 350Vp-p TTL, 170Vp-p Zero Crossing 4s 0.8V max 2.4V min 50mV 1.5V 200k 200k 200k 240Vrms max ANSI/IEEE C37.90.1 +5V at 8mA max 1500Vrms max ANSI/IEEE C37.90.1 100dB 0.10% Span 0.05% Span 25ppm/C 100ppm/C <10mVp-p at Input >2% Span 300ms (-01); 175ms (-02); 50ms (-03); 30ms (-04); 30ms (-05); 15ms (-06); 15ms (-07); 2ms (-08) 0 to +5V Continuous Short to Ground ANSI/IEEE C37.90.1 +5VDC 5% 110mA 50ppm/% 1.11" x 1.65" x 0.40" (28.1mm x 41.9mm x 10.2mm) DESCRIPTION DI-8B modules are an optimal solution for monitoring real-world process signals and providing high level signals to a data acquisition system. Each DI-8B45 module isolates and conditions a frequency input signal and provides an analog voltage output. The frequency input signal can be either a TTL level or zero crossing with as little as 100mV amplitude. Input circuitry for each signal type has built-in hysteresis to prevent spurious noise from corrupting the module output. TTL signals are applied to the + and - terminals while zero crossing signals are applied to the +EXC and - terminals. Reference the block diagram (p 2). A 5V excitation is available for use with magnetic pick-up or contact closure type sensors. The excitation is available on the EXC terminal with return on the - terminal. A special input circuit on the DI-8B45 modules provides protection against accidental connection of power-line voltages up to 240VAC. Clamp circuits on the I/O and power terminals protect against harmful transients. Isolation is provided by optical coupling to suppress transmission of common mode spikes or surges. The module is powered from +5VDC, 5%. The modules are designed for installation in Class I, Division 2 hazardous locations and have a high level of immunity to environmental noise. Minimum Input Maximum Input Minimum Pulse Width TTL Input Low TTL Input High Input Hysteresis Zero Crossing TTL Input Resistance Normal Power Off Overload Input Protection Continuous Transient Excitation CMV, Input to Output Continuous Transient CMR (50Hz or 60Hz) Accuracy Nonlinearity Stability Offset Gain Noise Output Ripple Response Time, 90% Span Output Range Output Protection Power Supply Voltage Power Supply Current Power Supply Sensitivity Mechanical Dimensions Environmental Transient Operating Temperature -40C to +85C Storage Temperature -40C to +85C Relative Humidity 0 to 95% Noncondensing 240VAC between + and -/+EXC/-EXC terminals. 120VAC between - and +EXC/EXC terminals and between +EXC and -EXC terminals. Includes nonlinearity, hysteresis, and repeatability. DATAQ Instruments, Inc. * 241 Springside Drive * Akron, Ohio 44333 * Tel: 330-668-1444 * Email: support@dataq.com * www.dataq.com DI-8B45 Frequency Input Modules Block Diagram Ordering Information Model Number DI-8B45-01 DI-8B45-02 DI-8B45-03 DI-8B45-04 DI-8B45-05 DI-8B45-06 DI-8B45-07 DI-8B45-08 Input Range 0Hz to 500Hz 0Hz to 1kHz 0Hz to 2.5kHz 0Hz to 5kHz 0Hz to 10kHz 0Hz to 25kHz 0Hz to 50kHz 0Hz to 100kHz 241 Springside Drive Akron, Ohio 44333 330-668-1444 Data Acquisition Product Links (click on text to jump to page) Data Acquisition | Data Logger | Chart Recorder | Thermocouple | Oscilloscope The information on this data sheet is subject to change without notice. DATAQ and the DATAQ logo are registered trademarks of DATAQ Instruments, Inc. All rights reserved. Copyright (c) 2005 DATAQ Instruments, Inc. |
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