SCM5B32-01D

Isolated Analog Signal Conditioning Products S C M 5 B SCM5B32 Analog Current Input Modules Description Each SCM5B32 current input module provides a single channel of analog 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 • Accepts Milliamp Level Signals • High-Level Voltage Outputs 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 A precision current conversion resistor is supplied with the S B module. Sockets are provided on the SCMPB01/02/03/04/05/06/07 bac panels to allow installation of this resistor. xtra resistors are available under part number S R . • ± 0.03% Accuracy Signal filtering is accomplished with a six pole filter which provides dB 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 on the computer side. • ANSI/IEEE C37.90.1 Transient Protection • Input Protected to 240VAC Continuous • 160dB CMR • 95dB NMR at 60Hz, 90dB at 50Hz • ± 0.005% Linearity SA S ertified • CE and ATEX Compliant • Mix and Match SCM5B Types on Backpanel 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%. A special input circuit on the SCM5B32 modules 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 2 B l o ck D ia g r a m 8 ©1995-2017 Dataforth Corporation, All Rights Reserved For information call 800-444-7644 ISO9001:2008-Registered QMS Specifications Typical❇ at TA Module Input Range Input Resistor Value Accuracy Stability Input Protection Continuous Transient CMV, Input to Output Continuous Transient CMR (50Hz or 60Hz) NMR Accuracy(1) Linearity Stability Input Offset Output Offset Gain Noise Input, 0.1Hz 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” and D power Ordering Information SCM5B32 Model Input Range Output Range † SCM5B32-01 SCM5B32-02 4mA to 20mA 0mA to 20mA 3, 4 3, 4 0mA to 20mA or 4mA to 20mA . ± 0.1% ppm 240Vrms max ANSI/IEEE C37.90.1 1500Vrms max ANSI/IEEE C37.90.1 160dB 95dB at 60Hz, 90dB at 50Hz B specifications, p. , for additional current input models. Output Ranges Available † Output Range Part o u fi 3. 0V to +5V 4. 0V to +10V NONE D am e SCM5B32-01 SCM5B32-01D ± 0.03% Span ± 0.005% Span nA ppm 10nArms rms 4Hz 0.2s 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 +5VDC ± 5% 30mA A 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 Refer to S 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. Does not include S R accuracy. (2) RTI = Referenced to input. Visit our website www.dataforth.com ©1995-2017 Dataforth Corporation, All Rights Reserved 9 ISO9001:2008-Registered QMS S C M 5 B Isolated Analog Signal Conditioning Products