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The Allen Bradley 1794sc-IF8IU serves as an isolated universal input module tailored for Flex I/O systems. This unit accommodates various input signals, handling both voltage and current inputs with notable precision.
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| Manufacturer | Allen Bradley |
|---|---|
| Product Type | Isolated Universal Input Module |
| Product Line | Flex I/O 1794 |
| Part Number | 1794sc-IF8IU |
| Weight | 2.00 lbs (0.91 kg) |
| Number of Inputs | 8 Channels |
| Nominal Input Voltage Range | ±50 mV, ±100 mV, 0-5 V, 1-5 V, 0-10 V, and ±10 V |
| Nominal Input Current Ranges | 0-20 mA, 4-20 mA |
| Resolution | 16 Bits |
| Input Impedance | >1 M Ω for voltage, thermocouple, RTD and resistance inputs; 249 Ω ±1% for current inputs |
| Common Mode Rejection | 60 dB at 5 V peak-to-peak |
| Min. Frequency | 50 Hz |
| Max. Frequency | 60 Hz |
| Flexbus Current | 80 mA |
| Power Dissipation | 7.25 W @ 31.2 VDC |
| Thermal Dissipation | Max 10.2 BTU/Hr at 31.2 VDC |
The 1794sc-IF8IU module from Allen Bradley is an advanced isolated universal input device designed to integrate seamlessly into Flex I/O series systems. With the capacity for 8 input channels, this module is engineered to accept diverse input voltage levels, including ranges of ±50 mV, ±100 mV, 0-5 V, 1-5 V, 0-10 V, and ±10 V. It is equally capable of processing input currents from 0-20 mA and 4-20 mA, ensuring adaptability for various industrial applications.
This module features a resolution of 16 bits, enhancing the capability to accurately sample and convert signals. The input impedance is rated at over 1 MΩ for voltage-related inputs such as thermocouples, resistance, and RTDs, ensuring that signal integrity is maintained. Current inputs are specified at 249 Ω ±1%, allowing for precise measurements in a range of configurations.
For effective operation, the device achieves a common mode rejection ratio of 60 dB when measuring a peak-to-peak voltage of 5 V, which helps mitigate unwanted noise and interference. The module supports an operational frequency bracket, accepting signals within the range of 50 Hz to 60 Hz.
At a flexbus current of 80 mA, this module dissipates a power level of 7.25 W when operating at 31.2 VDC, producing a maximum thermal dissipation of 10.2 BTU/hour at the same voltage level. Overall, the 1794sc-IF8IU module stands out for its versatility and ability to handle a wide array of input specifications, making it valuable for modern automation and control tasks.
| Revision Part # | Also known as | |
|---|---|---|
| 1794sc-IF8IU Ser A | 1794sc-IF8IU/A, Series A, Rev A | |
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