1756-IV16 Product datasheet     

1756-IV16 Functional Description    

The Allen-Bradley 1756-IV16 is a digital sourcing input/output (I/O) module designed for use with the ControlLogix 1756 chassis. This module supports 16 input channels, with eight inputs in each group. To connect it to the chassis, the module requires a removable terminal block (RTB), such as the 1756-TBNH or 1756-TBSH. It is important to note that the 1756-IV16 PLC Digital DC Input Module ControlLogix only supports an input data format. The operating voltage range for this module spans from 10 to 30 Volts DC, with a nominal input voltage of 24 Volts DC. Additionally, it falls under the 12/24 Volt DC source voltage category.

The 1756-IV16 Digital Input Module operates with a total backplane power consumption of 0.61 watts, and its maximum inrush current is 250 milliamps. It also has a maximum input impedance of 3.2 kΩ at 30 Volts DC and a power dissipation of up to 5.1 watts at 60°C, with a thermal dissipation of 18.47 BTU per hour. The module's continuous isolation voltage is rated at 250 Volts, while its off-state maximum voltage is 5 Volts DC with a current of 1.5 milliamps.

For on-state operation, the 1756-IV16 Digital Sourcing I/O Module exhibits a current range between 2 milliamps at 10 Volts DC and 10 milliamps at 30 Volts DC. Additionally, the module has a backplane input delay time that varies based on its state transitions. When transitioning from "off" to "on," the delay consists of a hardware delay time (nominal 280 microseconds, maximum 1 millisecond), plus a user-selectable filter time (0, 1, or 2 milliseconds). On the other hand, the delay time for a transition from "on" to "off" includes a hardware delay time (nominal 540 microseconds, maximum 2 milliseconds) plus a user-selectable filter time (1, 2, 9, or 18 milliseconds).

This combination of features makes the Allen-Bradley 1756-IV16 module a reliable solution for digital input applications in industrial automation systems.