SCM5B33-04C

Isolated Analog Signal Conditioning Products S C M 5 B SCM5B33 Isolated True RMS Input Modules Description Each SCM5B33 True RMS input module provides a single channel of A input which is converted to its True R S D value, filtered, isolated, amplified, and converted to a standard process voltage or current output (Figure 1). 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 . • Designed for Standard Operation with Frequecies of 45Hz to 1000Hz (Extended Range to 20kHz) The field voltage or current input signal is processed through a pre amplifier and R S converter on the field side of the isolation barrier. The converted D signal is then chopped by a proprietary chopper circuit and transferred across the transformer isolation barrier, suppressing transmission of common mode spikes and surges. The computer side circuitry reconstructs, filters and converts the signal to industry standard outputs. Modules are powered from +5VDC, ± 5%. For current output models, in addition to the 5VDC module power, an external loop supply of 4.2V to 26V is required. The loop supply connection, with series load, is between pin and pin . Due to circuit limitations, SCM5B33-04x and -05x are not ATEX compliant. WARNING: The SCM5B33 interfaces to ompatible with Standard urrent and Potential Transformers • Industry Standard Output of Either 0-1mA, 0-20mA, 4-20mA, 0-5V or 0-10VDC . Factory alibrated Accuracy (Accuracy Class 0.2) • 1500Vrms Continuous Transformer Isolation • Input Overload Protected to 480V Max (Peak AC & DC) or 10A RMS Continuous • ANSI/IEEE C37.90.1 Transient Protection SA S ertified • CE Compliant • ATEX Compliant (all models except SCM5B33-04x, -05x) • Mix and Match SCM5B Types on Backpanel ha ardous voltages and should only be wired by ualified personnel or licensed electricians. F i g u r e 1 : S C M 5 B 3 3 B l o ck • Interfaces RMS Voltage (0 – 300V) or RMS Current (0 – 5A) D ia g r a m 1 0 ©1995-2017 Dataforth Corporation, All Rights Reserved For information call 800-444-7644 ISO9001:2008-Registered QMS Specifications Typical❇ at TA and SCM5B33 Input Signal Range Standard Frequency Range Extended Frequency Range Impedance 100mV to 300Vrms, 0 to 5Arms 45Hz to 1000Hz 1kHz to 20kHz shunted by pF thru . , . AC Coupling Protection(1) Continuous (-01 thru -05) Continuous (-06 thru -07) Transient (-01 thru -05) Transient (-06 thru -07) Output Signal Range Current Limit Voltage Limit Resistance Protection Ripple and Noise (100kHz) Ordering Information D power Module 0-5V or 0-10V or 0-1mA or 0-20mA or 4-20mA 1.4mA (0-1mA models), 30mA (0/4-20mA models), 8mA (0-5, 0-10V models) ± 18V (0-5, 0-10V models) , models Continuous Short to Ground 0.025% Span rms ± 0.25% Span ± 0.25% Reading Additional Error ± 0.75% Reading Additional Error ± 0.05% ± 0.15% ± 0.30% ± 0.40% Isolation (Common Mode) Input to Output, Input to Power Continuous Transient Output to Power Continuous Reading Additional Error Reading Additional Error Reading Additional Error Reading Additional Error ppm 1500Vrms max ANSI/IEEE C37.90.1 50VDC max Rejection (50-60Hz Common Mode) 100dB Response Time (0 to 99%)