SCM7B40/41 Isolated Analog Voltage Input Modules, Wide Bandwidth FEATURES DESCRIPTION ACCEPTS MILLIVOLT OR VOLTAGE INPUTS Each SCM7B40/41 voltage input module accepts one channel of analog voltage input which is filtered, isolated, amplified, and converted to a high level analog voltage for output to the process control system. PROVIDES HIGH LEVEL VOLTAGE OUTPUTS 10KHZ BANDWIDTH These modules incorporate a five-pole filtering approach to maximize both time and frequency response by taking advantage of both Thomson (Bessel) and Butterworth characteristics. One pole of the filter is on the field side of the isolation barrier; four are on the process control system side. 1500Vrms TRANSFORMER ISOLATION ACCURACY, 0.03% OF SPAN TYPICAL, 0.1% MAX ANSI/IEEE C37.90.1-1989 TRANSIENT PROTECTION After the initial field-side filtering, the input signal is chopped by a proprietary chopper circuit and transferred across the transformer isolation barrier, suppressing transmission of common mode spikes and surges. The signal is then reconstructed and filtered for process control system output. INPUT PROTECTED TO 120Vrms CONTINUOUS EASY DIN RAIL MOUNTING CSA CERTIFIED, FM APPROVAL PENDING Modules accept a wide 14 - 35VDC 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" backpanels. CE COMPLIANT 1500V Isolation Barrier + + - VIN 1 - 2 Surge Suppression and Protection LPF (1 pole) Iso-Chopper IITM Amplifier Pat Pending LPF (4 pole) 4 5 X 0 VOUT COM NC Backpanel Term Block Field-Side Process Control System-Side +V -V 3 dc Supply Fig 1: SCM7B40/41 Block Diagram DATAFORTH A Burr-Brown Company (R) Call 800-444-7644 For Information and Assistance 124 dc Supply/ Oscillator VS (14-35V dc) Module SCM7B40 SCM7B41 -1V to +1V 1nA -10V to +40V 0.1nA 50M 30k min 30k min 500k min 500k min 500k min 120Vrms max ANSI/IEEE C37.90.1-1989 * * 40mW <1 Continuous Short-to-Ground 12V, 14mA * * * * 1500Vrms max ANSI/IEEE C37.90.1-1989 110dB * * 100dB 0.03% Span typical, 0.1% Span max 0.01% Span typical, 0.02% Span max * * 35ppm/C 0.5V/C 0.005%(Vz)5/C 0.002% Span/C 55ppm/C 5V/C * * 2mV 1mV 1V * * * 10KHz 80dB/decade >10KHz 40s * * * 14 to 35VDC 12mA 0.0001%/%Vs * * * 2.13" x 1.705" x 0.605" max 54.1mm x 43.3mm x 15.4mm max * * Input Signal Range Bias Current Resistance Normal Power Off Overload Protection Continous Transient Output Signal Range1 Effective Available Power1 Resistance Protection Voltage/Current Limit CMV (Input-to-Output) Continuous Transient CMRR (50 or 60Hz) Accuracy2 Nonlinearity3 Stability (-40C to +85C) Gain Input Offset Zero Suppression Output Offset Noise Peak @ 5MHz B/W RMS @ 10Hz to 100kHz B/W Peak @ 0.1Hz to10Hz B/W Frequency and Time Response Bandwidth, -3dB NMR Step Response, 90% Span Supply Voltage Current1 Sensitivity Mechanical Dimensions (H)(W)(D) Environmental Operating Temperature Range Storage Temperature Range Relative Humidity Emmissions Immunity -40C to +85C -40C to +85C 0 to 90% noncondensing EN50081-1, ISM Group 1, Class A (Radiated, Conducted) EN50082-1, ISM Group 1, Class A (ESD, RF, EFT) NOTES * Specification same as preceding model. Output Range and Supply Current specifications are based on minimum output load resistance. Minimum output load resistance is calculated by VOUT2/PE, where PE is the Output Effective Available Power that guarantees output range, accuracy, and linearity specifications. 2 Accuracy includes the effects of repeatability, hysteresis, and linearity. 3 Nonlinearity is calculated using the best-fit straight line method. 1 OUTPUT RANGES AVAILABLE OUTPUT RANGE PART NUMBER MODIFIER +1 to +5V 0 to +5V 0 to +10V (none) A D EXAMPLE SCM7B40-02 SCM7B40-02A SCM7B40-02D 125 SCM7B SPECIFICATIONS Typical at 25C and +24VDC * * * * * ORDERING INFORMATION MODEL INPUT RANGE SCM7B40-02 SCM7B40-03 SCM7B40-07 SCM7B40-08 SCM7B41-01 SCM7B41-02 SCM7B41-03 SCM7B41-04 SCM7B41-05 SCM7B41-06 0 to +100mV 0 to +1V 100mV 1V 0 to +10V 5V 10V 0 to +5V 0 to +20V 0 to +40V Call 800-444-7644 For Information and Assistance DATAFORTH A Burr-Brown Company (R)