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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/C
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Product Model1771-NIS/C
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Product ParametersPLC 5 series sinking/sourcing 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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Number of Inputs8 Inputs
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Input TypesCurrent
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Input Resolution4-20 Miliamperes
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Backplane Current2.9 Amperes
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Data FormatBDC or Natural Binary
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Typical AC Signal Delay (Off)45 (+/- 15) ms
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Typical DC Signal Delay (Off)50 ms
Description
The Allen-Bradley 1771-NIS is an I/O module which belongs to the 1771-N high resolution I/O module series. It is equipped with 8 current input channels rated for 4-20mA. The 1771-NIS module provides power for the input circuit loops. The current drawn by the 1771-NIS from the I/O chassis backplane is 2.4A and the total power dissipated is 12W. The 1771-NIS interfaces with PLC-5/250, PLC-3 and PLC-5 controllers.
The current range supported by the 1771-NIS’s input channels is 0.1 – 21mA. The resolution for the input channels is 330nA/bit (at 16 bits unipolar) with the impedance at the input being a maximum of 300ohm. The module-supplied loop power is 20 – 30V DC (0 to 20mA range). The 1771-NIS module needs a maximum of 5s to detect an open input circuit and it provides 24V DC overvoltage protection. A range of 50 dB to 60 dB provides the values for normal mode rejection whereas the typical common mode rejection is 150 dB. The value for the offset drift is ±200nA/°C whereas the value for the gain drift is ±95 ppm/°C. The update time per module is a maximum of 25s and the bandwidth range at input channels is 9 Hz. The under-range and over-range limit values are 3.2mA and 21mA, respectively. The values for the 1771-NIS’s input channel calibration are 1 mA / 21 mA.
The current range supported by the 1771-NIS’s input channels is 0.1 – 21mA. The resolution for the input channels is 330nA/bit (at 16 bits unipolar) with the impedance at the input being a maximum of 300ohm. The module-supplied loop power is 20 – 30V DC (0 to 20mA range). The 1771-NIS module needs a maximum of 5s to detect an open input circuit and it provides 24V DC overvoltage protection. A range of 50 dB to 60 dB provides the values for normal mode rejection whereas the typical common mode rejection is 150 dB. The value for the offset drift is ±200nA/°C whereas the value for the gain drift is ±95 ppm/°C. The update time per module is a maximum of 25s and the bandwidth range at input channels is 9 Hz. The under-range and over-range limit values are 3.2mA and 21mA, respectively. The values for the 1771-NIS’s input channel calibration are 1 mA / 21 mA.
Revisions
Revision Part #
Also known as
Alternative Names
1771-N1SC
177INISC
I77I-NISC
1771N1SC
I771-NISC
I77IN1SC
1771NISC
I771NISC
I77INISC
177I-NISC
I77I-N1SC
Information
Overview
Manuals
Application Notes
Product Applications
Wiring and Grounding
Features:
- N-Series Analog I/O Module
- with 1771 Remote TerminationPanels (RTPs)
- 1771 PLC-5 System
- High Resolution Isolated Analog Module
Designed to accept DC input signals in the 10–30 VDC range, the module provides reliable signal acquisition and electrical isolation between the field wiring and the controller backplane. Its compatibility with both sinking and sourcing devices simplifies integration into diverse control architectures.
The module includes LED status indicators for each channel, allowing maintenance personnel to quickly identify signal conditions and troubleshoot field wiring issues. The optically isolated design enhances protection against electrical noise, transient voltages, and ground potential differences.
The 1771-NIS/C Allen-Bradley PLC 5 series sinking/sourcing 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/C PLC 5 series sinking/sourcing input moduleManuals, 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 current range supported by the 1771-NIS/C input channels is 0.1 – 21mA. The resolution for the input channels is 330nA/bit (at 16 bits unipolar) with the impedance at the input being a maximum of 300ohm. The module-supplied loop power is 20 – 30V DC (0 to 20mA range). The 1771-NIS/C module needs a maximum of 5s to detect an open input circuit and it provides 24V DC overvoltage protection. A range of 50 dB to 60 dB provides the values for normal mode rejection whereas the typical common mode rejection is 150 dB. The value for the offset drift is ±200nA/°C whereas the value for the gain drift is ±95 ppm/°C. The update time per module is a maximum of 25s and the bandwidth range at input channels is 9 Hz. The under-range and over-range limit values are 3.2mA and 21mA, respectively. The values for the 1771-NIS’s input channel calibration are 1 mA / 21 mA.
- Chemical & Petrochemical:Monitors pressure & flow transmitters in hazardous environments
- Food & Beverage:Manages high-accuracy dosing and weighing machinery
- General Manufacturing:Used in PLC-5 systems for conveyor, stack light, and pump control
- Precision Filling:16-bit resolution enables loss-in-weight filling for precise portions
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.
Wiring Arm: Connect your devices to the 1771-WG or 1771-WH field wiring arm. This arm pivots upward, letting you remove the module without disconnecting any wires.
Shielding: Ground cable shields properly to protect against Electromagnetic Interference (EMI). Tape exposed shields and drain wires with electrical tape, or attach a ground lug with heat shrink tubing to prevent accidental electrical contact.
Unused Channels: Jumper all unused channels to the module common to significantly reduce signal noise.
Technical notes
Input delay times are 1 ms typical and 4 ms maximum for both off-to-on and on-to-off transitions. The module mounts in standard 1771 I/O chassis and communicates with the PLC-5 processor via the 1771 I/O backplane.
The 1771-NIS/C operates in temperatures from 0 to 60°C and carries UL, cULus, CSA, and CE certifications. Typical applications include general-purpose digital input interfacing for machine control, material handling, and process control systems using the PLC-5 platform.
FAQs
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What is the 1771-NIS/C ？
+The Allen-Bradley 1771-NIS/C is a discontinued, high-resolution isolated analog input module designed for Allen-Bradley PLC-5 systems. -
What are the input ranges?
+The module accepts 4-20mA current signals (scalable 0 - 21mA) with a 16-bit unipolar resolution (approximately 330 nA/bit) -
Does it require an external power supply?
+No, the module does not require an external power supply and receives its backplane power (2.9 A at 5V DC) directly from the chassis. -
What is its compatibility status?
+The 1771-NIS/C module was officially discontinued by the manufacturer. You can explore replacement or conversion cables in the Bulletin 1492 I/O Wiring Conversion Systems Selection Guide.
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