1771-IXHR Allen-Bradley PLC 5 Analog Input Module

Product parameters

Module type: High-resolution isolated thermocouple/millivolt input module

Number of input channels: 8 floating differential input channels

Input signal type:

Thermocouple types: Supports B, E, J, K, T, R, and S type thermocouples

Millivolt input range: ±100 mV

Thermocouple: 0.1°C or 0.1°F (optional for users)

Millivolts: 1 µV

Accuracy:

Thermocouple: ±0.5°C to ±1.5°C (depending on type and temperature range, at 25°C)

Millivolts: ±0.1% (full scale, 25°C)

Cold end compensation (CJC) accuracy: ±0.5°C (0 to 60°C)

Input impedance: >10 MΩ

Channel isolation

Inter-channel isolation: 1000 VDC (continuous)

Input to backplane isolation: 1000 VDC (continuous)

Backplane current: 0.85 A (5 VDC)

Power consumption: Maximum 4.25W

Heat dissipation: Maximum 14.5 BTU/ hour

Conversion time: Approximately 50 ms per channel (approximately 400 ms for 8-channel scanning, with visual filter Settings)

Input overvoltage protection: ±30 VDC (continuous)

Cold End Compensation (CJC) :

Built-in cold end compensation, ranging from 0 to 60°C, with an accuracy of ±0.5°C

Use the cold-end sensor on the 1771-WI wiring arm

Operating temperature: 0 to 60°C (32 to 140°F)

Storage temperature: -40 to 85°C (-40 to 185°F)

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

Installation location:

Compatible with I/O racks such as 1771-A1B, A2B, A3B, A4B, etc

Occupy one slot

Wiring:

Use the 1771-WI wiring arm (screw terminal)

Wire specification: 14-22 AWG stranded or solid copper wire, with a maximum insulation thickness of 3/64 inches

Terminal screw torque: 7-9 inches - pounds

Recommended thermocouple extension cables: 18 or 22 AWG, with a maximum cable length of 1000 feet

Key control: The backplane connector is key controlled between pins 20-22 and 24-26

Certification: Complies with UL, CSA, CE and other standards

Status indication:

Green RUN indicator light: Indicates that the module is operating normally

Red FLT indicator light: Indicates fault status

Function

Support for multiple types of thermocouples

Supports B, E, J, K, T, R and S type thermocouples, covering a wide temperature range (-270 to 1820°C), and can be configured as a single type (8 channels) or two types (4 channels each).

Supports millivolt input (±100 mV), suitable for low-level signal acquisition.

High resolution and accuracy

The thermocouple has a resolution of 0.1°C/°F and a millivolt resolution of 1 µV, providing high-precision measurement.

The accuracy ranges from ±0.5°C to ±1.5°C (for thermocouples) or ±0.1% (millivolts), making it suitable for demanding temperature monitoring.

Cold End Compensation (CJC) :

Built-in cold junction compensation (0 to 60°C, accuracy ±0.5°C), and the sensor on the 1771-WI wiring arm corrects the influence of ambient temperature to ensure the accuracy of thermocouple measurement.

Channel isolation

Provide 1000 VDC isolation between channels and input to the backplane to prevent signal interference and ground loops, and improve system reliability.

Data transmission

The block transfer read/Write (BTR/BTW) instructions are used to transfer the input data from the module memory to the PLC processor data table and receive the configuration data.

The conversion time is approximately 50 ms per channel, and the 8-channel scanning is about 400 ms, making it suitable for real-time temperature monitoring.

Diagnostic function:

Support open-circuit detection to identify thermocouple disconnection faults.

It provides high/low temperature alarms (which can be set by the user), and the operation and fault status are displayed through the green RUN and red FLT indicator lights.

When powered on, perform self-diagnosis and report the status of the module.

Modular design

It occupies one I/O rack slot, does not require an external power supply, and is compatible with PLC-5 processors (such as 1785-L80C) and power modules (such as 1771-P5).

The 1771-WI connection arm is used, supporting unbroken removal/insertion (RIUP, power off required).

Configuration flexibility:

Configure the thermocouple type, range, temperature unit (°C/°F) and filtering parameters through RSLogix 5 or Studio 5000 Logix Designer.

Application scenarios

Process control: In the chemical, oil and gas, or pharmaceutical industries, thermocouple signals are collected to monitor the temperature of reactors, pipelines, or storage tanks, supporting PID regulation or process optimization.

Industrial heating and cooling: In heat treatment furnaces, injection molding machines or HVAC systems, monitor the temperature to control heaters, coolers or heat exchangers to ensure process stability.

Energy management: In power distribution or renewable energy systems, monitor the temperature of transformers, generators or battery packs to prevent overheating or equipment failure.

Environmental monitoring: In the environmental control system, temperature data (such as in cold storage and greenhouses) are collected to ensure that environmental conditions meet the requirements.

Manufacturing industry: In automotive manufacturing, food processing or electronic assembly, monitor the temperature of production equipment or the environment to support quality control and equipment protection.

Scientific research and testing: In laboratories or testing equipment, millivolt signals (such as strain gauges, pressure sensors) are collected to support high-precision data analysis.

Legacy system maintenance: Used for maintaining or upgrading old systems based on PLC-5 (such as when used in conjunction with 1785-L80C, 1771-P5, etc.), to extend the lifespan of equipment or prepare for migration to modern platforms (such as 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.

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