SCM5B45-21

Isolated Analog Signal Conditioning Products S C M 5 B SCM5B45 Frequency Input Modules Description Each SCM5B45 frequency input module provides a single channel of frequency input which is isolated and converted to a high-level analog voltage output (Figure 1). This voltage output is logic switch controlled, which allows these modules to share a common analog bus without the requirement of external multiplexers. The fre uency input signal can be a TTL level signal or a ero crossing signal. Terminal on the field side terminal bloc is the common or ground connection for input signals. A TTL signal is connected from terminal 2 to terminal 3, while a zero-crossing signal is connected from terminal 4 to terminal 3. Input circuitry for each of the signal types has hysteresis built in. An input signal must cross entirely through the hysteresis region in order to trigger the threshold comparator. A . excitation is available for use with magnetic pic up or contact closure type sensors. The excitation is available on pin and the excitation common is pin 3. The SCM5B modules are designed with a completely isolated computer side circuit which can be oated to from Power ommon, pin . This complete isolation means that no connection is re uired between I O Common and Power Common for proper operation of the output switch. If desired, the output switch can be turned on continuously by simply connecting pin , the Read nable pin, to I O ommon, pin . Features • Accepts Frequency Inputs of 0 to 100kHz • Provides High-Level Voltage Outputs • TTL or Zero Crossing Signal Inputs • 1500 Vrms Transformer Isolation • ANSI/IEEE C37.90.1 Transient Protection • Input Protected to 240VAC Continuous • 120dB CMR • ± 0.05% Accuracy SA S ertified • CE and ATEX Compliant • Mix and Match SCM5B Types on Backpanel A special circuit in the input stage of the module provides protection against accidental connection of power-line voltages up to 240VAC. F i g u r e 1 : S C M 5 B 4 5 B l o ck D ia g r a m 3 4 ©1995-2017 Dataforth Corporation, All Rights Reserved For information call 800-444-7644 ISO9001:2008-Registered QMS Specifications Typical❇ at TA and D power Module Input Range Input Threshold 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 (50 or 60Hz) Accuracy(1) Linearity Stability Offset Gain Noise Output Ripple Response Time (0 to 90%) SCM5B45-01, -02, -21, -22 SCM5B45-03, -23 SCM5B45-04, -05, -24, -25 SCM5B45-06, -07, -08, -26, -27, -28 Output Range Output Resistance Output Protection Output Selection Time (to ± 1mV of VOUT) Output Current Limit SCM5B45 0Hz to 100kHz Zero Crossing 60mVp-p 350Vp-p s 0.8V max 2.4V min ± 20mV (± 400mV on -2x models) 1.5V 240Vrms max ANSI/IEEE C37.90.1 +5.1V at 8mA max 1500Vrms max ANSI/IEEE C37.90.1 120dB ± 0.05% Span ± 0.02% Span ppm ppm Zero Crossing Hysteresis 0Hz to 500Hz 0Hz to 1kHz 0Hz to 3kHz 0Hz to 5kHz 0Hz to 10kHz 0Hz to 25kHz 0Hz to 50kHz 0Hz to 100kHz 3, 4 3, 4 3, 4 3, 4 3, 4 3, 4 3, 4 3, 4 ± 20mV ± 20mV ± 20mV ± 20mV ± 20mV ± 20mV ± 20mV ± 20mV 0Hz to 500Hz 0Hz to 1kHz 0Hz to 3kHz 0Hz to 5kHz 0Hz to 10kHz 0Hz to 25kHz 0Hz to 50kHz 0Hz to 100kHz 3, 4 3, 4 3, 4 3, 4 3, 4 3, 4 3, 4 3, 4 ± 400mV ± 400mV ± 400mV ± 400mV ± 400mV ± 400mV ± 400mV ± 400mV Input Range SCM5B45-01 SCM5B45-02 SCM5B45-03 SCM5B45-04 SCM5B45-05 SCM5B45-06 SCM5B45-07 SCM5B45-08 SCM5B45-21 SCM5B45-22 SCM5B45-23 SCM5B45-24 SCM5B45-25 SCM5B45-26 SCM5B45-27 SCM5B45-28 Output Ranges Available † Output Range Part o u fi 3. 0V to +5V 4. 0V to +10V NONE D am e SCM5B45-01 SCM5B45-01D 300ms 170ms 90ms 20ms See Ordering Information Continuous Short to Ground s at load = 0 to 2000pF +8mA +0.8V +2.4V +36V . A Power Supply Voltage Power Supply Current Power Supply Sensitivity Environmental Operating Temperature Range Storage Temperature Range Relative Humidity Emissions EN61000-6-4 Radiated, Conducted Immunity EN61000-6-2 RF ESD,EFT Output Range† Model 2 % span Output nable ontrol Max Logic “0” Min Logic “1” Max Logic “1” Input Current “0,1” Mechanical Dimensions (h)(w)(d) Ordering Information +5VDC ± 5% 110mA RTO(2) 2.28” x 2.26” x 0.60” (58mm x 57mm x 15mm) to to 0 to 95% Noncondensing ISM, Group 1 Class A ISM, Group 1 Performance A ± 0.5% Span Error Performance B NOTES: ❇ ontact factory or your local Dataforth sales office for maximum values. Includes linearity, hysteresis and repeatability. (2) RTO = Referenced to output. Visit our website www.dataforth.com ©1995-2017 Dataforth Corporation, All Rights Reserved 3 5 ISO9001:2008-Registered QMS S C M 5 B S C M 5 B Isolated Analog Signal Conditioning Products