SCM7B22

Isolated Process Control Signal Conditioning Products S C M 7 B SCM7B22 Isolated Bipolar Voltage Output Modules Description SCM7B22 voltage output modules accept input signals in the ± 10V range from the process control system. The signal is isolated, buffered, and filtered to provide a unity gain field voltage output Figure . Features These modules incorporate a five pole filtering approach to maximi e both time and fre uency response by ta ing advantage of both Thomson Bessel and Butterworth characteristics. One pole of the filter is on the process control system side of the isolation barrier four are on the field side. • Provides High-Level Output to ± 10V After the initial process control system side filtering, the input signal is chopped by a proprietary chopper circuit and transferred across the transformer isolation barrier, suppressing transmission of common mode spi es and surges. The signal is then reconstructed and filtered for field side output. Modules accept a wide 19 - 29VDC power supply range (+24VDC nominal). Their compact packages (2.13”x1.705”x0.605” max) save space and are ideal for high channel density applications. They are designed for easy DIN rail mounting using any of the DIN bac panels. • Accepts High-Level Input to ± 10V • 1500Vrms Transformer Isolation • Accuracy, ± 0.03% of Span Typical, ± 0.1% Max • ANSI/IEEE C37.90.1 Transient Protection • Output Protected to 120Vrms Continuous • Input Protected to ± 35VDC • Noise, 2mVp-p (5MHz), 1mVrms (100kHz) • 100dB CMRR • Easy DIN Rail Mounting SA S ertified • CE and ATEX Compliant 1500Vrms Isolation Barrier + 1 + LOAD – – 2 Surge Suppression Protection. and LPF (2 pole) Iso-Chopper II™ Amplifier Pat. Pending LPF (2 pole) LPF (1 pole) Input Protection 5 X 0 NC Field-Side –V 3 DC Supply D ia g r a m ©1995-2017 Dataforth Corporation, All Rights Reserved COM Process Control System-Side +V 7 0 VIN + – Backpanel Term Block F i g u r e 1 : S C M 7 B 2 2 B l o ck 4 For information call 800-444-7644 ISO9001:2008-Registered QMS DC Supply/ Oscillator 5 VS (19-29VDC) COM Isolated Process Control Signal Conditioning Products Typical❇ at and Ordering Information D Module Output Signal Range Drive apability Resistance Protection Continuous Transient Voltage/Current Limit SCM7B22 CMV (Input-to-Output) Continuous Transient CMRR (50 or 60Hz) 1500Vrms ANSI/IEEE C37.90.1 100dB Stability to Gain Output Offset Noise Peak at 5MHz B/W RMS at 10Hz to 100kHz B/W Peak at 0.1Hz to 10Hz B/W Frequency and Time Response Bandwidth, – 3dB NMR (– 3dB at 400Hz) Step Response, 90% Span Supply Voltage Current Sensitivity Mechanical Dimensions (h)(w)(d) Environmental Operating Temperature Range Storage Temperature Range Relative Humidity Emissions EN61000-6-4 Radiated, Conducted Immunity EN61000-6-2 RF ESD, EFT Input Range Output Range ± 10V ± 10V 120Vrms ANSI/IEEE C37.90.1 ± 12.5V, ± 40mA ± 10V ± 0.5nA min ± 35VDC (no damage) Linearity(2) SCM7B22 ± 10V ± 20mA Input Signal Range Bias Current Resistance Protection Accuracy(1) Model S C M 7 B Specifications S C M 7 B ± 0.03% ± 0.1% ± 0.01% ± 0.02% . Span typical, Span max Span typical, Span max ppm Span 2mV 1mV RTI(3) 400Hz dB per Decade above 1ms H 19 to 29VDC 16mA ± 0.0001%/ %V S 2.13” x 1.705” x 0.605” max (54.1mm x 43.3mm x 15.4mm max) 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. Accuracy includes the effects of repeatability, hysteresis, and linearity. Linearity is calculated using the best fit straight line method. (3) RTI = Referenced to Input. Visit our website www.dataforth.com ©1995-2017 Dataforth Corporation, All Rights Reserved 7 1 ISO9001:2008-Registered QMS