AB 1746-NI4/B High Resolution Analog Input Module

Technical Specifications for 1746-NI4/B

About  1746-NI4/B

AB  1746-NI4/B  High Resolution Analog Input Module
The Allen Bradley 1746-NI4 is an SLC 500 Four (4) Channel Analog Input Module. It has user-selectable analog channels for voltage or current to support multiple monitoring and control applications; it has a 16-bit resolution and contains a removable terminal block that provides connections analog input channel. This channel can be connected as a differential input. There is a DIP that switches on the circuit board to select the input or current voltage. The Backplane current at 5 Volts of this module is 25 mA; at 24 Volts, the current is 85 mA. Caution should be given to avoid connecting the voltage source without the transmitter current, etc. to the channel configured for current input. Incorrect module operation or module damage may occur.

The 1746-NI4 has Standard Cable Lengths of 0.5, 1, 2.5, and 5.0 meters. The AIFM Connector of this module is 15-pin D-shell. The Allen Bradley 1746-NI4 has Current Loop Input Specifications: the input range is +/-20 mA (nominal) and +/-30 mA (maximum). The Input impedance is 250 Ohms with a resolution of 1.22070 & µA per LSB and an approximate Gain error drift of +/-67 ppm/degrees Celsius. The overall accuracy at 25 degrees Celsius is +/- 0.365% of full scale, +/- 0.642% at 60 degrees Celsius. The overall accuracy drift is +79 ppm/degree Celsius of full scale. The 1746-NI4’s input voltage range is +/-10 Volts DC -1 LSB. Its impedance is 1 mega Ohms. The accuracy drift is +63 ppm/ degrees Celsius of full scale. The Resolution is 305.176 & µV per LSB, with a Gain error drift at +/- 57 ppm/degree Celsius. The Overall accuracy at 25 degrees Celsius is +/-0.284% of full scale, and +/-0.504% at 60 degrees Celsius.


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