The Allen-Bradley 1797-IE8 is a FLEX Ex Analog Input Module manufactured by Rockwell Automation. It includes a variety of special features, such as multiple data ranges, a local coprocessor, and a wide variety of alarms. These alarms can be triggered by a variety of events, including over-range, under-range, local fault, and remote fault. The Allen-Bradley 1797-IE8 FLEX Ex Analog Input Module accepts up to eight non-isolated inputs which can receive current within two separate ranges; The range of 4-20 milliamps or the range of 0-20 milliamps. The Allen-Bradley 1797-IE8 FLEX Ex Analog Input Module is visibly comprised of a power-on indicator, a removable label and a key switch. The module type and input designator are inscribed on the center of the component, making identification a straightforward affair.

The resolution of the Allen-Bradley 1797-IE8 FLEX Ex Analog Input Module is 16 bits. The data format is configurable, enabling more versatility in deployment. The Allen-Bradley 1797-IE8 FLEX Ex Analog Input Module also possesses a single green indicator for power, and a total of 8 green indicators to alert the operator to the presence of faults. The power dissipation of the Allen-Bradley 1797-IE8 FLEX Ex Analog Input Module is a total of 17.75 BTU per hour. The module’s shipping weight totals 200 grams. This device is highly sensitive to electrostatic discharge (ESD), which means it is essential to to take precautions against the possibility of an electrostatic shock to the device. These precautions may include use of a wire ground strap and insulating materials during the installation process.

The Allen-Bradley 1797-IE8 has a module field-side power consumption of 7.5 watts. Additionally, the power dissipation of this device is 5.2 watts. There are also two (2) distinct conductor wire sizes associated with the 1797-IE8. There is a 44 mm² (12 AWG) stranded max wire and a 1.2 mm (3/64 in.) insulation max wire. The Allen-Bradley 1797-IE8 has dimensions that measure 46 millimeters x 94 millimeters x 75 millimeters (1.8 in. x 3.7 in. x 2.95 in.). The step response to ninety-nine percent (99%) of FS for the Allen-Bradley 1797-IE8 is four (4) milliseconds. There are also a few environmental conditions to be made aware of when it comes to this product. The operational temperature range for the Allen-Bradley 1797-IE8 is -20 (negative twenty) to +70 (positive seventy) degrees Celsius, or -4 (negative four) to +158 (positive one hundred fifty-eight) degrees Fahrenheit. The recommended temperature range when storing the Allen-Bradley 1797-IE8 is -40 (negative forty) to +85 (positive eighty-five) degrees Celsius, or -40 (negative forty) to +185 (positive one hundred eighty-five) degrees Fahrenheit. The relative humidity when using this product should be noncondensing and within the range of five percent to ninety-five percent (5% to 95%). 

The Allen-Bradley 1797-IE8 Flex Ex Analog Input Module is equipped with various indicators to inform any operator of the device's status. When the indicator is flashing red, this means that there is a channel fault. A solid green indicator will light up when power is applied to the device. When there is a flashing green light, this indicates that there is no communication with Flexbus. This usually means the adapter is not powered or there is a faulty connection. When the indicator is solid yellow, this indicates that HART communication is functioning as intended.