The Allen-Bradley 1797-IBN16 is a high-performance NAMUR certified module designed for operation in hazardous locations with applicable ratings for Class I, II, III and Div 1, Zone 1 and 22. It features sixteen non-isolated, sinking input channels, each NAMUR and Intrinsically Safe certified with Ex ia IIB/IIC T4, AEx ia IIC T4 specifications. The module supports a wide range of input delay times from 1 to 33 milliseconds and is equipped with a comprehensive set of status indicators, including yellow and red LEDs for status and fault monitoring, alongside a green power supply indicator. The unit is intended for use with 1797-TB3 or 1797-TB3S terminal bases and accommodates 4 mm ² stranded wire, drawing 2.1 mA current in the ON state with a maximum power dissipation of 2.8 watts. Efficiently designed, this module delivers reliable performance in extreme temperatures from -20 to 70 °C, with robust safety certifications from IECEx, NMETRO, C-UL, CENELEC, and FM.
Technical specifications for 1797-IBN16
Manufacturer
Rockwell Automation
Input Frequency
1000 Hz max
Off-state Current
1.2 mA
On-state Current
2.1 mA
Brand
Allen-Bradley
Product Description:
Flex Ex NAMUR Input Module
No. of inputs:
Sixteen (16) non-isolated, sinking inputs
Digital Input Type:
NAMUR Compatible type
IS input type:
Ex ia IIB/IIC T4, AEx ia IIC T4, Class I, II, III Division 1 Group A-G T4
IS module type:
Ex ib IIB/IIC T4, AEx ib IIC T4, Class I, Division 1 Group A-D T4
Input pulse width:
>500 µs on or off
Input delay times:
1 ms, 2 ms, 3 ms, 5 ms, 9 ms, 17 ms, 33 ms
Indicators:
16 yellow status indicators 16 red fault indicators 1 green module power indicator
Terminal Base:
1797-TB3 or 1797-TB3S
Conductor wire size:
4 mm2 (12 gauge) stranded; max 1.2 mm (3/64 in.) insulation max
