中文版
Description
The Allen-Bradley 1794-IE12 is a high-density analog input module from the Flex I/O product family. This module is primarily used to interface analog devices such as Transmitters, indicators, recorders, single-loop and multi-loop controllers and other devices.
The 1794-IE12 comes with Twelve (12) analog input channels, configurable for 0 to 20mA, 4 to 20 mA, +/- 10VDC and 0 to 10 VDC input signal type. It has an integrated analog to digital conversion circuitry using successive approximation method with resolution of 320 ?V/cnt for voltage and 0.641 ?A/cnt for current. The analog data format is stored in a 16-bit, left justified register with 8.0 ms conversion rate on all channels. The absolute accuracy of the 1794-IE12 is 0.1% full scale @ 25 °C for Voltage and current input with accuracy drift of 0.004% Full Scale/°C.
1794-IE12
The 1794-IE12 is designed for use with the 1794-TB3G and 1794-TB3GS terminal bases. Only one terminal base is required per module. When installing the module to the appropriate terminal base, the intended keyswitch position is 3. Keyswitch position is a fool-proof hardware installation key preventing incorrect modules from being installed to incorrect terminal base.
The 1794-IE12 operates when supplied with a nominal voltage supply of 24VDC, with an acceptable voltage supply range of 10 to 31.2 VDC. It has a physical dimension of 3.7 x 3.7 x 2.1 inches. Status of the module is reported in groups through the Light Emitting Diode (LED) green/red power/status indicator.
The 1794-IE12 has open-type enclosure. The compatible terminal bases for this analog input module are 1794-TB3GS and 1794-TB3G. The voltage rating of the 1794-IE12 module is 24 Volts DC and with an acceptable range of range is 10.5 to 31.2 VDC.
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