SCM5B36-02D

S C M 5 B Isolated Analog Signal Conditioning Products SCM5B36 Potentiometer Input Modules Description Each SCM5B36 Potentiometer input module provides a single channel of potentiometer input which is filtered, isolated, amplified, 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 re uirement of external multiplexers. Features 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 . • 1500Vrms Transformer Isolation xcitation for the potentiometer is provided from the module by two matched current sources. When using a three-wire potentiometer, this method allows cancellation of the effects of lead resistances. The excitation currents are very small (less than 1.0mA) which minimizes self-heating of the potentiometer. Signal filtering is accomplished with a six pole filter which provides 95dB of normal-mode rejection at 60Hz and 90dB at 50Hz. Two poles of this filter are on the field side of the isolation barrier, and the other four are in the output stage. After the initial field side filtering, the input signal is chopped by a proprietary chopper circuit. Isolation is provided by transformer coupling, again using a proprietary technique to suppress transmission of common mode spikes or surges. The module is powered from +5VDC, ± 5%. Interfaces to Potentiometers up to • High-Level Voltage Output • ANSI/IEEE C37.90.1 Transient Protection • Input Protected to 240VAC Continuous • 160dB CMR • 95dB NMR at 60Hz, 90dB at 50Hz • ± 0.03% Accuracy • ± 0.005% Linearity SA S ertified • CE and ATEX Compliant • Mix and Match SCM5B Types on Backpanel A special input circuit on the SCM5B36 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 3 6 B l o ck D ia g r a m 1 6 ©1995-2017 Dataforth Corporation, All Rights Reserved For information call 800-444-7644 ISO9001:2008-Registered QMS , Specifications Typical❇ at TA and Module SCM5B36 Input Range Input Resistance Normal Power Off Overload Input Protection Continuous Transient Sensor Excitation Current Lead Resistance Effect Output Offset Gain Noise Input, 0.1 to 10Hz Output, 100kHz Bandwidth, – 3dB Response Time, 90% Span Output Range Output Resistance Output Protection Output Selection Time (to ± 1mV of VOUT) Output Current Limit Output nable ontrol Max Logic “0” Min Logic “1” Max Logic “1” Input Current “0,1” Open Input Response Open Input Detection Time SCM5B36-01 SCM5B36-02 SCM5B36-03 SCM5B36-04 240Vrms max ANSI/IEEE C37.90.1 . mA , . mA . , . , Sensor Sensor , Sensor Sensor Input Range to to to to Output Range† 3, 4 3, 4 3, 4 3, 4 Output Ranges Available † Output Range Part o u fi 3. 0V to +5V 4. 0V to +10V NONE D am e SCM5B36-01 SCM5B36-01D 1500Vrms max ANSI/IEEE C37.90.1 160dB 95dB at 60Hz, 90dB at 50Hz ± 0.03% Span ± 0.005% Span . , . , sensor sensor ppm of Reading . rms rms 4Hz 0.2s See Ordering Information Continuous Short to Ground s at load = 0 to 2000pF +8mA +0.8V +2.4V +36V . A Downscale 3s Power Supply Voltage Power Supply Current Power Supply Sensitivity +5VDC ± 5% 30mA RTI(2) Mechanical Dimensions (h)(w)(d) 2.28” x 2.26” x 0.60” (58mm x 57mm x 15mm) Environmental Operating Temperature Range Storage Temperature Range Relative Humidity Emissions EN61000-6-4 Radiated, Conducted Immunity EN61000-6-2 RF ESD, EFT Ordering Information Model to CMV, Input to Output Continuous Transient CMR (50 or 60Hz) NMR Accuracy(1) Linearity Stability Input Offset D power S C M 5 B 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) RTI = Referenced to input. Visit our website www.dataforth.com ©1995-2017 Dataforth Corporation, All Rights Reserved 1 7 ISO9001:2008-Registered QMS S C M 5 B Isolated Analog Signal Conditioning Products