Allen Bradley 1756-IR6I ControlLogix 6 Pt Isolated RTD In Module

 

Description

The Allen-Bradley 1756-IR6I module is a ControlLogix temperature-sensing analog input module. There are 6 individually isolated RTD inputs on the module. Four input ranges that are configurable are supported by the module and they are 1 to 487 Ohms, 2 to 1000 Ohms, 4 to 2000 Ohms, and 8 to 4000 Ohms. The resolution for each of the above-mentioned input ranges are 7.7 milliohms per bit, 15 milliohms per bit, 30 milliohms per bit, and 60 milliohms per bit. The 1756-IR6I module supports multiple sensors including 100, 200, 500, 1000-Ohms platinum sensors (alpha = 385), 100, 200, 500, and 1000-Ohms platinum sensors (alpha = 3916), 120-Ohms nickel (alpha = 672) sensors, and 10-Ohms copper sensors. The power requirement of the module is 250 milliamps at 5 Volts DC and 125 milliamps at 24 Volts DC.

The Allen-Bradley 1756-IR6I is a temperature-measuring analog module. This is an analog module that is used with Resistance-Temperature Detectors (RTD) sensors.

The 1756-IR6I module provides two data formats such as integer mode and the floating-point mode. When choosing the integer mode, the integrated features are multiple input ranges, notch filter, and real-time sampling. The floating mode includes all these features with the addition of temperature linearization, process alarms, rate alarms, and digital filtering. It also has selectable temperature unit to such as Celsius or Fahrenheit. There are Four (4) possible input ranges for the module including 1 to 487 m?, 2 to 1000 m?; 4 to 2000 m?;, and 8 to 4000 m?;. These ranges designate the minimum and maximum signals detectable by the module. It has Six (6) individually isolated RTD inputs and a resolution of 16 bits. Actual resolution includes 7.7 m?bit for 1-487 Ohms; 15 m?/bit for 2-1000 Ohms, 30 m?/bit for 4 - 2000 Ohms and 60 m?/bit for 8 - 4020 Ohms. The module's notch filter line noise filtering. Make sure to choose the filter that closely matches the application's anticipated noise frequency. The digital filter smoothens data by eliminating noise transients on each input channel. The 1756-IR6I's real-time sampling feature lets the module multicast data it gathered from scanning all of its input channels. To enable multicast, configure Real-Time Sampling (RTS) period and a Requested Packet Interval (RPI) period.

Protection features are also embedded with this module such as under-range/over-range detection, feature of the module which is used to monitor if the input signal falls beyond the limits set by the input range. The process alarms work similarly however the process limits are manually set by the user. The integrated rate alarm allows the module to detect a rapid increase or decrease within a short defined period of time. Rate alarm is only available in applications using floating point. Wire off detection feature provide loop wiring completeness. It can detect if the RTB or a wire in the module has been disconnected.

The Allen Bradley 1756-IR6I RTD Input Module is widely used in various temperature-sensitive industrial applications, including:

• Process Control in Manufacturing

Used in industries such as food and beverage, pharmaceuticals, and chemical processing, where precise temperature control is critical for quality assurance.

• Power and Energy Sector

Deployed in power plants and renewable energy systems to monitor and regulate temperature in boilers, turbines, and other critical components.

• HVAC and Environmental Control

Ideal for industrial heating, ventilation, and air conditioning (HVAC) systems, ensuring efficient thermal regulation in buildings and production facilities.

• Metals and Materials Processing

Used in steel mills, glass manufacturing, and material processing industries where temperature control affects product quality and process efficiency.

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