Product Specifications

Part Number	1771-NIS/B
Product Type	Analog Input Module
Input Type	Current only, isolated
Number of Channels	8
Signal Input Range	4-20 mA
Operating Temperature	0°C ~ 60°C
Resolution	330 nA/bit (16-bit unipolar)
Loop Supply Voltage	20-30V DC (0-20 mA range)
Backplane Current Draw	2.9A
Power Dissipation	12 W
Open Circuit Detection Time	5 seconds
Overvoltage Protection	24V DC
Dimensions	5.1cm × 15.2cm × 25.4cm
Weight	0.8kg

The 1771-NIS/B Analog Input Module is a high-precision current input module designed for industrial PLC and process control applications. It provides eight isolated current input channels supporting standard 4–20 mA signals, with a 16-bit unipolar resolution of 330 nA per bit for accurate signal acquisition and monitoring. The module accepts loop-powered inputs with a 20–30 VDC supply for 0–20 mA applications and supports both BCD and Natural Binary data formats, enabling flexible integration with a wide range of control systems.

Frequently asked questions：

Q1: What is the 1771-NIS/B Analog Input Module used for?
A1: The 1771-NIS/B Analog Input Module is designed to receive and process analog current signals from field devices such as transmitters and sensors. It enables accurate monitoring of process variables in PLC-based industrial systems.

Q2: How many input channels does the 1771-NIS/B provide?
A2: The 1771-NIS/B module features 8 analog input channels, allowing multiple field devices to be monitored simultaneously.

Q3: What input signal range does the 1771-NIS/B module support?
A3: The 1771-NIS/B supports the industry-standard 4–20 mA analog current input range, making it compatible with a wide variety of industrial transmitters.

Q4: What is the 1771-NIS/B backplane current requirement?
A4: The 1771-NIS/B module requires 2.9 A of backplane current, which should be considered when determining the power capacity of the PLC chassis.

Q5: What is the power dissipation of the 1771-NIS/B module?
A5: The 1771-NIS/B has a power dissipation of 12 W, supporting stable operation under normal industrial conditions.

Product Applications

Oil and Gas
Petrochemicals and Chemistry
Power and Energy
Metallurgy and Water Treatment

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We provide a 12-month warranty and worldwide stock availability to guarantee smooth integration and prompt delivery for your daily operations.

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④ GE: IS200/DS200 series Excitation system card, IC693/IC695/IC697/IC698/IC200/IC660/IC670 CPU module
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⑥ Siemens: MICROMASTER, Simadyn, Simatic S5, Simatic S7, SIMODRIVE, SIMOVERT, SINAMICS, Texas Instruments
⑦ Emerson: DeltaV, Ovation, EPRO
⑧ Schneider: Quantum 140 series, Modicon Premium
⑨ HIMA: F8650X, F7105A , F6217 , F3237 , F3330 , F8628X ,F6205
⑩ Invensys Foxboro: FCP270, FCP280, CP30B, FBMSSW, FBMSVH, P0903CV, FCM10E

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