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Allen-Bradley 1746-NI4 Analog Input Module

Description of 1746-NI4

The 1746-NI4 is a four-channel analog input module from Allen Bradley’s SLC-500 series; the input voltage or current is selectable per channel. This module draws a backplane current of 35 mA at 5 Volts and 85 mA at 24 Volts, providing DIP switches to manipulate channel 0 to channel 3 input modes. To prepare the channel for current input, the DIP switch is put to the ON-state while the OFF-state prepares the channel to accept voltage input.

The 1746-NI4 has a 14-bit resolution with a 2.5 millisecond conversion rate. It operates with a current range of -20 to 20 mA and a voltage range of -10 to 10 Volts DC. It has a 500 Volt AC/710 Volt DC backplane isolation and a 60-millisecond step response time. Its conversion method is “sigma-delta conversion”, and it has a nominal throughput delay of 512 micro seconds. Its nominal input range is plus/minus 20mA, its maximum input range is plus/minus 30 mA, and it has an input current encoding of plus/minus 16384 for plus/minus 20mA. With 5 Volts DC or 7.5 Volts AC RMS maximum input voltage (absolute), the 1746-NI4 has a nominal input resistance of 250 Ω.

Overall, the 1746-NI4 has full scale accuracy of +/- 0.365% at 25 degrees Celsius, with the maximum being +/- 0.642% (of full scale) at 0 to 60 degrees Celsius. It has a full-scale accuracy drift of 79 ppm/degree Celsius, a 0.323% maximum gain error at 25 degrees Celsius, and 0.556% at maximum, at a temperature between 0 and 60 degrees Celsius. The

The 1746-NI4 has 1 MΩ resistance on the input voltage, a resolution of 305.176 µV and a -32768 to 32767 input voltage encoding for 10 Volts DC. The 1746-NI4 has an accuracy of +/- 0.284% of full scale at 25 degrees Celsius and +/- 0.504% at 0 to 60 degrees Celsius.

Technical Specifications for 1746-NI4

Manufacturer	Allen-Bradley / Rockwell Automation
Series	SLC 500
Part Number	1746-NI4
Product Type	Input Module
Module Type	Analog
Number of Inputs	4
Voltage Inputs	Supported
Current Inputs	Supported
DIP Switch Configuration	Supported
Loop Power	Not Supported

About 1746-NI4

The Allen-Bradley 1746-NI4 I/O module is an industrial analog I/O module from the Allen-Bradley SLC-500 series that has 4 channels. The 4 channels that the 1746-NI4 I/O module has are all input channels. Each input channel can operate as a voltage input channel or as a current input channel and each channel can be programmed for voltage or current operation by the users. This flexibility makes the 1746-NI4 input module suitable for a variety of machine control applications and machine monitoring applications. At a voltage rating of 5 Volts, the 1746-NI4 input module draws 35 milliamps of maximum backplane current while at a voltage rating of 24 Volts, this input module draws 85 milliamps of maximum backplane current.

The Allen-Bradley 1746-NI4 4-channel I/O module is made to be part of an SLC-500 system that controls different kinds of industrial machinery. Because it is an analog input module, the 4 input channels in the 1746-NI4 I/O module can be configured with DIP switches. The input channels are labeled from 0 to 3. One thing that analog modules like the 1746-NI4 input module cannot do is to supply loop power for input devices that are connected to it in the system. If this analog input module is connected to input devices that require loop power, then the users must supply the loop power with devices other than the 1746-NI4 analog input module. The 1746-NI4 input module has a converter resolution rating of 16 bits. It supports a field wiring to backplane isolation voltage rating of 500 Volts DC.

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Categories	Digital I O Module
Brand Name:	AB
Model Number:	1746-NI4
MOQ:	1
Payment Terms:	T/T
Supply Ability:	1000
Delivery Time:	2-5 work days
Packaging Details:	New in Original Box