Product Description
The Allen-Bradley 1771-IFMS is an intrinsically safe, fast millivolt input module that is part of the 1771 I/O system. It is a modular component of the 1771 I/O system requiring a properly installed system chassis. This module senses 8 differential analog inputs and converts them to a proportional four-digit BCD or fifteen-bit binary value. The module reads a 0 to 50mv input signal. Allen-Bradley 1771-IFMS can read slightly overrange or slightly underrange voltages.
Product Parameters
- Input range: 0 to 50 mV
- Resolution: 12 bits
- Accuracy: ±0.1% of full scale
- Input impedance: 10 MΩ
- Common mode rejection ratio: 100 dB
- Normal mode rejection ratio: 80 dB
- Operating temperature range: -40 to 70 °C (-40 to 158 °F)
- Storage temperature range: -40 to 85 °C (-40 to 185 °F)
Usage Method
The 1771-IFMS input module is installed in a 1771 I/O chassis. The module is connected to the PLC processor using a 1771 I/O cable. The module is also connected to the field devices using shielded twisted-pair cables.
To use the 1771-IFMS input module, the user must first configure the module using the PLC programming software. The user must specify the input range, resolution, and accuracy of the module. The user must also specify the scaling factors that will be used to convert the module’s output values to engineering units.
Once the module is configured, the user can start using it to read analog input signals from the field devices. The module’s output values can then be used by the PLC program to control the process.
Product Applications
The Allen-Bradley 1771-IFMS input module is used in a variety of applications, including:
- Process control
- Machine control
- Data acquisition
- Monitoring and alarm systems
The module is commonly used to read analog input signals from sensors, such as thermocouples, RTDs, and strain gauges. The module’s output values can then be used by the PLC program to control the process, such as adjusting the temperature of a furnace or the speed of a motor.
The 1771-IFMS input module is a reliable and accurate module that is well-suited for a variety of industrial applications.
- Main products, advantageous supply, sufficient stock: Each brand DCS, PLC spare parts
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