Description
DSCA41-12C Dataforth Analog Isolated Voltage Input Module, Input 0-5V, Output 4-20mA 3kHz Wide Bandwidth DIN-Rail mount
Each DSCA41 voltage input module provides a single channel of analog input which is filtered, isolated, amplified, and converted to a high-level voltage output. Signal filtering is accomplished with a five-pole filter. An anti-aliasing pole is located on the field side of the isolation barrier, and the other four poles are on the system side. 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.
Module output is either voltage or current. For current output models a dedicated loop supply is provided at terminal 3 (+OUT) with loop return located at terminal 4 (-OUT). The system-side load may be either floating or grounded.
Special input circuits provide protection against accidental connection of powerline voltages up to 240VAC and against transient events as defined by ANSI/ IEEE C37.90.1. Protection circuits are also present on the signal output and power input terminals to guard against transient events and power reversal. Signal and power lines are secured to the module using screw terminals which are in pluggable terminal blocks for ease of system assembly and reconfiguration.
The modules have excellent stability over time and do not require recalibration, however, zero and span settings are adjustable up to 5% to accommodate situations where fine-tuning is desired. The adjustments are made using potentiometers located under the front panel label and are non-interactive for ease of use.
Input Range: 0 to +5 V
Output Range: 4 to 20 mA
Bandwidth: 3 kHz
Mechanical Format: DIN rail
Isolation Voltage: 1500 Vrms
Isolation Type: Transformer 3-way
Accuracy: 0.03% Span
Supply Voltage: 15 to 30 Vdc (+24V Nom)
Input Voltage Withstand: 240 Vrms
Gain/Offset Adjust: 5%
NMR (60 Hz) Rejection: 100dB/decade above 3 kHz
External I-to-V Resistor: N/A
Output Control: Always enabled
Output Resistance: <1 Ohm
Dimensions: 2.95 x 0.89 x 4.13 inches
Interface: 8 Pos terminal block
Customization: yes
Manufacturer:Electronic Components
Datasheet:dsca40_41.pdf
