1791DS-IB8XOB8 I/O DeviceNet security module Safe output module with solid state output

The Guard I/O DeviceNet Security module, directory number 1791DS-IB8XOB8 is a security output module with a solid state output. The module has embedded I/O modules, such as eight (8) security inputs, eight (8) solid state outputs, and four (4) test outputs.

The 1791DC-IB8XOB8 module is equipped with a protection Class 20 housing. It can be used in applications that require safety Integrity Level (SIL) 3. It complies with the IEC 61508 standard and safety Category 4 as specified in EN 954-1.

The safety input is designed for the perfusion wiring configuration with a minimum on-state voltage of 11VDC and input current of 6 mA. The test output channel supports source configurations with rated output current of 0.7A, maximum residual voltage of 1.2V, and maximum leakage current of 0.1 mA. The safety output also supports source wiring, and the rated output current is 0.5A, the maximum residual voltage is 1.2V, and the maximum leakage current is 0.1mA.



The 1791DC-IB8XOB8 has built-in self-diagnostics and configuration locking. The module's integrated I/O status data provides information about single point input state, combined input state, single point output state, combined output state, single test output state, and single output read-back (the actual on/off state of the output).

Allen-Bradley 1791DS-IB8XOB8 CompactBlock is a DeviceNet protected combination module. It has 20.4 to 26.4 V DC I/O supply voltage (nominal voltage is 24 V DC), 11 to 25 V DC communication supply voltage, and 110 mA current consumption (24 V DC).

The module has 8 safety inputs, 4 test outputs and 8 solid state safety outputs, and is equipped with a separate status indicator. The input of this module is a current absorption input type with an input current of 6 amps and a maximum off state current of 1 mA. The minimum input voltage for the on-state of the 1791DS-IB8XOB8 is 11 V DC. The 1791DS-IB8XOB8&s has a maximum turn-off input voltage of 5 V DC. The module's current source test output has a maximum leakage current of 0.1 mA, a rated output current of 0.7 Amps, and a maximum residual voltage of 1.2 V. On the other hand, the current source safety output of the 1791DS-IB8XOB8 module has the same maximum leakage current of 0.1 mA, the same maximum residual voltage of 1.2 V, and the rated output current of 0.5 amps.

Allen-Bradley 1791DS-IB8XOB8 is a protective I/O module that implements the DeviceNet security protocol. It operates at temperatures between -10 and 55 degrees Celsius (14 to 131 degrees Fahrenheit) and is stored and transported in a temperature range of -40 to 70 degrees Celsius (-40 to 158 degrees Fahrenheit), surrounded by 5% to 95% non-condensing relative humidity. It has a vibration rating of 5G at 0.35mm frequencies from 10 to 500 Hz and a maximum operating shock rating of 15G. The 1791DS-IB8XOB8 module weighs 420 grams (0.93 LBS) and measures 80 mm x 196 mm x 77 mm (3.2 inches x 7.7 inches x 3 inches).