About 1746-NIO4I

The 1746-NIO4I SLC 500 Four Channel Analog I/O module by Allen-Bradley is an I/O combination module which comes with 2 inputs and 2 outputs point in a single slot module. It has 2 differential voltage or current input points and 2 current outputs with an overall backplane current draw of 55mA at 5V and of 145mA at 24V. Its points have a common mode voltage of -20 -20V with a common module rejection signal of 105dB at 60Hz and a Normal mode rejection signal of 55dB at 60Hz. The 1746-NIO4I uses the Sigma-Delta ADC converter with a converter resolution of 16 bits, ±1 LSB, and 0.01% repeatability and Non-Linearity. Its normal input current ranges between -20 and +20 mA with a current impedance of 250 Ohms and a resolution of 1.22µA per LSB. The 1746-NIO4I has an overall accuracy of ±0.642% at 0-60° C with a drift accuracy of +79 ppm/5 ⁰C and maximum gain and drift errors of ±0.556% and ±67ppm/ °C. The 1746-NIO4I also has a voltage input rating of -10-10V DC and a 760 KΩ voltage impedance at a resolution of 305µV per Least Significant Bit (LSB). It also has an accuracy of ±0.504%, and a drift accuracy and error of ±63 ppm/° C and ±57 ppm/° C. The 1746-NIO4I offers overvoltage at either 220V AC (RMS) or 220V DC (continuous). Its 6 current outputs have a load range of 0-500mA with its normal range at 0-20 mA and it has a 5% over-range capability at 2.56348µA per LSB signal resolution. The 1746-NIO4I also has an overall accuracy of ±0.541% with a drift accuracy of ±70 ppm/ °C and a gain and offset error of ±0.516% and ±12 LSB. The entire module has a 500V-tested isolation between fields in the wiring-to-backplane isolation and it has an aggregate update time of 512µs for all channels. The 1746-NIO4I’s operational temperature ranges between 0 and60° C at 5-95% non-condensing relative humidity.

echnical Specifications:

Part Number:	1746-NIO4I
Series:	SLC 500
Module Type:	Analog Combination Module
Inputs:	2
Outputs:	2
Backplane Current (5 Volts):	55 milliamps
Backplane Current (24 Volts):	145 milliamps
Bandwidth:	10 Hertz
Update Time:	512 microseconds
Resolution:	16 bits in, 14 bits out
Step Response:	60 milliseconds in, 2.5 milliseconds out