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We provide 1 year warranty for all remaining parts.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
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Amikon offers a wide range of components, products and services related to industrial automation. We have a large surplus of stocks and are also distributors of new products from a variety of quality manufacturers.
Technical specifications for 1771-NIS/B
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Product Model1771-NIS/B
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Product ParametersAnalog input module
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Tariff Code8537101190
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Country of originUSA
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Place of shipmentXiamen, China
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In stock1 unit
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Estimated Shipping Size3x15.2x25.8cm
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ManufacturerAllen-Bradley
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Weight0.75 kg
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Input TypeCurrent, isolated
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Input Range4 – 20 mA
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Input Resolution330 nA/bit (16-bit unipolar)
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Input Range (Operating)0.1 – 21 mA
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Under-Range Limit3.2 mA
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Over-Range Limit21 mA
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Input ImpedanceMaximum 300 Ω
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Input Calibration1 mA / 21 mA
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Operating Temperature0 °C to +60 °C (32 °F to 140 °F)
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Relative Humidity5 % to 95 %, non-condensing
Description
The Allen-Bradley 1771-NIS/B is a PLC-5 High Resolution Isolated Analog Input Module belonging to the 1771-N Series I/O modules. The 1771-NIS/B is equipped with 8 current input channels rated for 4 to 20 milliamps, providing high-resolution isolated analog input capability for industrial automation applications.
The Allen-Bradley 1771-NIS/B provides module-supplied loop power of 20 to 30V DC for the 0 to 20mA range, supporting the levels of loop power necessary for powering 2-wire transmitters connected to its inputs. The 1771-NIS/B draws a backplane current of 2.9 Amperes and dissipates a total power of 12W.
The Allen-Bradley 1771-NIS/B delivers high-resolution measurement with a resolution of 330 nA/bit at 16-bit unipolar. The 1771-NIS/B supports a current range of 0.1 to 21mA, with under-range and over-range limit values of 3.2mA and 21mA respectively. The 1771-NIS/B features input channel calibration values of 1 mA / 21 mA.
The Allen-Bradley 1771-NIS/B provides module-supplied loop power of 20 to 30V DC for the 0 to 20mA range, supporting the levels of loop power necessary for powering 2-wire transmitters connected to its inputs. The 1771-NIS/B draws a backplane current of 2.9 Amperes and dissipates a total power of 12W.
The Allen-Bradley 1771-NIS/B delivers high-resolution measurement with a resolution of 330 nA/bit at 16-bit unipolar. The 1771-NIS/B supports a current range of 0.1 to 21mA, with under-range and over-range limit values of 3.2mA and 21mA respectively. The 1771-NIS/B features input channel calibration values of 1 mA / 21 mA.
Revisions
Revision Part #
Also known as
Alternative Names
1771-NIS-B
1771-NIS B
1771 NIS/B
1771-N1S/B
177I-NIS/B
177I-NIS/B
I771-NIS/B
1771NIS/B
I77IN1S/B
Information
Overview
Manuals
Application Notes
Product Applications
Cable & Connection
Features:
- 8 Current Input Channels (4-20 mA)
- Module-Supplied Loop Power (20-30V DC)
- High Resolution (330 nA/bit at 16-bit Unipolar)
- Isolated Input Design
- Compatible with 1771-N Series RTP4 Interface Module
Each input channel features 16-bit unipolar resolution at 330 nA per bit, with an operating current range of 0.1 mA to 21 mA. The module provides under-range detection at 3.2 mA and over-range detection at 21 mA. Input impedance is limited to a maximum of 300 Ω. The module bandwidth is 9 Hz, with a maximum update time of 25 seconds per module. Open circuit conditions are detected within a maximum of 5 seconds.
The 1771-NIS/B Allen-Bradley Analog input module may still be available for purchase and support from Amikon Limited beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen-Bradley 1771-NIS/B Analog input module Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
The Allen-Bradley 1771-NIS/B is an 8-channel high-resolution isolated analog input module for the PLC-5 1771 I/O platform. It accepts 0–21 mA (including 4–20 mA) current signals, provides 16-bit resolution, built-in loop power, and communicates using Block Transfer instructions. It is widely used in industrial process control systems requiring accurate acquisition of analog transmitter signals.
- Chemical/Petrochemical: Monitors chemical feeds, pipe pressure, tank levels, and reaction temperatures via loop-powered transmitters
- Water/Wastewater: Tracks flow rates, effluent levels, pH, and dissolved oxygen across treatment basins
- Oil & Gas: Interfaces with gas detectors, pipeline pressure sensors, and custody-transfer flowmeters
- Food/Beverage: Manages batching by measuring weight, ingredient flow, and paste line pressure
- Power Generation: Reads steam pressure, cooling water temperature, and boiler level telemetry
This content has been produced using multiple sources.Amikon takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
Connection Cable: Connect the module to the RTP using catalog number 1771-NC6 (6 ft) or 1771-NC15 (15 ft) cable assemblies.
Module Connection: Plug the cable connector directly into the module edge connector and slide the locking bar down to secure it firmly.
RTP Connection: Terminate the other end of the cable assembly to the corresponding Remote Termination Panel (typically the 1771-RTP4) where your field devices land.
Technical notes
The Allen-Bradley 1771-NIS/B incorporates isolated analog input design, providing electrical isolation between channels and protecting the system from ground loops and interference. The 1771-NIS/B achieves a typical common mode rejection of 150 dB and normal mode rejection of 50 to 60 dB. The 1771-NIS/B features an offset drift of ±200 nA/°C and a gain drift of ±95 ppm/°C.
FAQs
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What is 1771-NIS/B?
+The Allen-Bradley 1771-NIS/B is an 8-channel, high-resolution isolated analog input module designed for the PLC-5 and 1771 Series I/O chassis. -
Can the 1771-NIS/B power my 2-wire field transmitters?
+Yes. The module can supply loop power (20--30V DC) directly to connected 2-wire transmitters, completely eliminating the need for an external power supply for your input loops -
Does the 1771-NIS/B require direct wiring to the module's faceplate?
+No. The N-series Allen-Bradley 1771-NIS module is designed to connect to a Remote Termination Panel (RTP) using 6-foot or 15-foot cable assemblies. Field devices are wired directly to the RTP. -
How does the module communicate with my PLC-5 processor?
+The module uses bidirectional Block Transfer Read (BTR) and Write (BTW) instructions programmed in your ladder logic to transfer data and status information.
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