The Allen-Bradley 1797-IBN16 Flex EX input/output external module is manufactured by Rockwell Automation. This NAMUR- Certified unit is a 16-point digital input module in the 1797 Flex EX I/O module series. This input module combines the functionality and design of the Allen-Bradley Flex I/O platform with Intrinsic Safety (IS) Technology, yielding extremely rapid signal inputs in an unusually small package. The Allen-Bradley 1797-IBN16 Flex EX input/output external module is capable of installation in extremely close proximity to control devices, creating significant savings in time, effort, and complexity for installers and operators. Specifically, this unit eliminates the usual requirement of setting out multiple cumbersome cabling systems for control, power, and communications. The Allen-Bradley 1797-IBN16 Flex EX input/output external module also features Galvanic Isolation, rendering the Intrinsic Safety (IS) Barriers completely unnecessary.

The Allen-Bradley 1797-IBN16 Flex EX input/output external module has 16 Sinking, digital, non-isolated inputs. In ON state, this unit draws a total of 2.1 milliamperes of current from the backplane. Conversely, during the OFF state, the Allen-Bradley 1797-IBN16 Flex EX input/output external module has a leakage current rating of 1.2 milliAmpere at 9.5 Volts DC. This unit includes a selectable input delay of anywhere from 1 millisecond to 33 milliseconds. The maximum input frequency of the Allen-Bradley 1797-IBN16 Flex EX input/output external module is 1000 Hertz, with a maximum input pulse width of more than 500 Ohms in either the ON or the OFF state. This unit is capable of providing isolation between an input to a power supply by way of Galvanic to DIN isolation. It can also provide isolation to a Flexbus by way of the same method of isolation.

The maximum load voltage of the Allen-Bradley 1797-IBN16 is 7.5 volts DC. The short circuit current is 7.5 milliamperes and the short circuit threshold comes in at less than six (6) milliamperes. The lead breakage threshold of this device is greater than 0.35 milliamperes. There are multiple indicators that are located on this product. These indicators include sixteen (16) status indicators that are yellow, sixteen (16) fault indicators that are red, and one (1) module power indicator that lights up green. The module field-side power consumption of the Allen-Bradley 1797-IBN16 is 2.8 W and the power dissipation is also 2.8 W. This product has two (2) different conductor wire sizes. These wire sizes include 4 mm², or 12 gauge, stranded max and 1.2 millimeters, or 3/64 inch, insulation max. There are two ideal temperature ranges when it comes to the Allen-Bradley 1797-IBN16. The temperature ranges for this product are negative twenty (-20) to positive seventy (+70) degrees Celsius (-4 to +158 ºF) when operating. When this product is nonoperational, the temperature range should be negative forty (-40) to positive eighty-five (+85) degrees Celsius (-40 to +185 ºF). The recommended relative humidity range for this product ranges from five percent (5%) to ninety-five percent (95%). The relative humidity should also be non condensing. 

The Allen-Bradley 1797-IBN16 has physical dimensions of 46 mm by 94 mm by 75 mm (1.8 in. x 3.7 in. x 2.95 in.). The approximate weight of this device is two hundred (200) grams. The ON-state current is 2.1 milliamperes, while the OFF-state current is 1.2 milliamperes.