1771-NR Allen-Bradley High Resolution Isolated Analog Input Module

Product parameters

Module type: High-resolution isolated RTD input module

Number of input channels: 8 floating differential input channels

Input signal type:

RTD type: 100 Ω Platinum (Pt), 120 Ω Nickel (Ni), 10 Ω Copper (Cu)

Resistance input: 0 to 650 Ω

Temperature range:

Platinum 100 Ω : -200 to 870°C

Nickel 120 Ω : -80 to 320°C

Copper 10 Ω : -200 to 260°C

Resolution: 16 bits (10 mΩ/ bit, temperature resolution 0.03°C platinum/nickel, 0.3°C copper)

Accuracy: ±0.5°C (platinum/nickel, 25°C), ±1.0°C (copper, 25°C)

Isolation: 1000 VDC (between channels and input to the backplane)

Backplane current: 1.5A (5VDC)

Power consumption: Maximum 6 W

Heat dissipation: Maximum 20.5 BTU/ hour

Update time: 25 ms (8 channels)

Wiring: Through the remote terminal panel (RTP, such as 1771-RTP4), use 6/15-foot cables (such as 1771-CAPR, 1771-CAP15)

Installation: 1771 I/O rack (A1B, A2B, A3B, A4B), occupying 1 slot, key pins 26-28 and 32-34

Operating temperature: 0 to 60°C

Storage temperature: -40 to 85°C

Relative humidity: 5% to 95% (no condensation)

Certifications: UL, CSA, CE, C-TICK

Status indication: Green RUN light, red FLT light

Function

High-precision RTD measurement

Supports 100 Ω platinum, 120 Ω nickel, and 10 Ω copper RTD, with a temperature range of -200 to 870°C and a resolution of 0.03°C (platinum/nickel).

Supports resistance input (0 to 650 Ω), with a resolution of 10 mΩ.

Channel isolation: 1000 VDC isolation to prevent signal interference and ground loops.

Remote Terminal Panel (RTP) : Connected via 1771-RTP4 and cable, it simplifies wiring and supports remote installation.

Fast data acquisition: 8-channel update time of 25 ms, 9 Hz low-pass filtering ensures signal stability.

Diagnostic function: Supports open circuit detection, over-range/under-range alarm, and green RUN and red FLT indicator lights to assist in troubleshooting.

Configuration flexibility: Configure the RTD type, range, temperature unit (°C/°F), etc. through RSLogix 5.

Modular design: Compatible with PLC-5 processors (such as 1785-L80C) and power modules (such as 1771-P5), and communicates using block transfer instructions (BTR/BTW).

Application scenarios

Process control: In the chemical, oil and gas, and pharmaceutical industries, it monitors the temperature of reactors, pipelines or storage tanks and supports PID regulation.

Industrial heating/cooling: In heat treatment furnaces, injection molding machines, and HVAC systems, control the temperature to ensure process stability.

Energy management: Monitor the temperature of transformers, generators or battery packs to prevent overheating.

Environmental monitoring: In cold storage, greenhouses or data centers, ensure that the ambient temperature meets the requirements.

Manufacturing industry: In the automotive, food processing, and electronic assembly sectors, monitor the temperature of equipment to support quality control.

Resistance measurement: Collect resistance signals (such as strain gauges) in the laboratory to support high-precision testing.

Legacy system maintenance: Maintain the PLC-5 system (such as in conjunction with 1785-L80C and 1771-P5), or prepare for migration to ControlLogix.

Advantage Products:

All items are Distributor Ready-stock Genuine Brand-new Supplying, please inform us if the other conditions are needed, Used, Open-box, Refurbished, etc.

Many Available just wait for you, feel free to ask to get better deal!!!

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