Allen Bradley 1734-IB8S Digital Safety Input Module

The 1734-IB8S is a POINT Guard I/O Safety Module by Allen-Bradley and Rockwell Automation. It has 8 inputs per module and a current sinking input type. This hardware has a maximum off-state input voltage of 5 Volts DC. On-state input voltage for the 1734-IB8S is 1130 Volts DC, 3.5 milliAmps at 40 degrees Celsius and 1128.8 Volts DC, 3.5 milliAmps at 55 degrees Celsius. It has a minimum on-state input current of 3.3 milliAmps and a maximum off-state current of 1.3 milliAmps. The IEC 61131-2 input type is Type 3 and it has a current sourcing output type.

With regard to output, this hardware has 4 sources (T0, T1M, T2, T3M). The aggregate current of test outputs per module are 2.8 Amps at 40 degrees Celsius and 0.55 Amps at 55 degrees Celsius. It has a pulse period of 144 milliseconds and a maximum current (when used to control muting lamp) of 25 milliAmps; minimum current when used to control muting lamp is 5 milliAmps.



Additional technical specifications for the 1734-IB8S include a maximum residual voltage of 0.3 Volts and a maximum output leakage current of 0.1 miliAmps. This module is equipped with short circuit protection and has a maximum POINTBus current of 110 milliAmps. Maximum power dissipation is 3.0 Watts and maximum thermal dissipation is 10.25 British Thermal Units (BTU) per hour; typical power dissipation is 2.25 Watts and it has an isolation voltage of 50 Volts (continuous) with basic insolation type. The test outputs for pilot duty rating are not rated. The 1734-IB8S has an approximate weight of 62.4 grams, or 2.2 ounces and approximate dimensions of 77 x 25 x 55 millimeters, or 3.03 x 0.98 x 2.17 inches.