AB 1771-NIV

Description

AB 1771-NIV is a high-resolution isolated analog input module produced by Allen-Bradley(A-B for short).The following is a detailed introduction to AB 1771-NIV:

I.Product Overview

The AB 1771-NIV module is an important component of the Allen-Bradley PLC(Programmable Logic Controller)system.It has eight(8)input channels for receiving and converting analog signals into digital signals for further processing by the PLC.The module is compatible with a variety of input signals,such as±5V input(±20mA,with resistor RTP),with a resolution of 16 bits,and can provide high-precision analog signal acquisition.

AB 1771-NIV

2.Technical Specifications

Number of input channels:8

Input signal compatibility:±5V input(±20mA with resistor RTP)or+5V input(+20mA with resistor RTP)

Resolution:16 bits

Backplane current consumption:1.5 amps

Power consumption:6.0 watts

Input filtering:6-pole low-pass hardware filter

Calibration interval:1 year recommended

Operating temperature:0 to 60 degrees Celsius(32 to 140 degrees Fahrenheit)

Storage temperature:-40 to 185 degrees Fahrenheit(or-40 to 85 degrees Celsius)

Input impedance:More than 10 megohms

Overvoltage protection:140V AC RMS(continuous)

Maximum time to detect input open:5 seconds

Rejection:50 dB/60 dB minimum in normal mode,150 common mode rejection dB(typical)

Gain drift specification:±35ppm/°C(±55ppm/°C with resistor)

Offset drift specification:±20μV/°C(±85nA/°C with resistor)

Bandwidth range of input channels:9Hz

Maximum update time:25 seconds

Underrange specification:0.8V DC(3.2mA)

Overvoltage specification:5.2V DC(20.8mA)

Calibration value:0.0000V/5.00V

AB 1771-NIV

III.Compatibility and application

Chassis compatibility:The AB 1771-NIV module is suitable for installation in 1771-A1B,A2B,A3B,A3B1,A4B,1771-AM1 and AM2 chassis.

Processor compatibility:The module is compatible with PLC3 and PLC5 controllers,but not with PLC2 processors.

Application areas:AB 1771-NIV modules are widely used in industrial automation,process control,monitoring systems and other fields,providing accurate analog signal acquisition and conversion for various equipment and processes.

IV.Other features

Built-in analog-to-digital converter:The AB 1771-NIV module has a built-in analog-to-digital converter that can convert the acquired analog signals into digital signals and scale them into engineering units.

Data transmission:Use block transfer write(BTW)and block transfer read(BTR)instructions to send and receive data captured by the analog input module.

Calibration and indication:The CAL/COM indicator is used to indicate BTR/BTW activity and calibration stage to ensure the accuracy and reliability of the module.

Hot swap is not supported:This module does not support removal and insertion in the power-on state,and needs to be installed and replaced in the power-off state.

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