The Allen-Bradley 1771-IQ16 is a discrete input module that is part of the 1771 Programmable Logic Controller (PLC) platform. This module is typically used to interface discrete electrical and mechanical devices such as switches, sensors, auxiliary contacts, pushbutton devices and similar devices to the controller module for reference of logic execution. The 1771-IQ16 converts the received electrical signal to a binary, digital signal and stores this data to the controller’s programmable memory.

The 1771-IQ16 mainly features Sixteen (16) isolated input channels that operates at a voltage range of 10-32VDC with nominal input voltage of 24VDC. It has maximum On-state voltage of 10VDC and maximum Off-state voltage of 5VDC. Each channel exhibits signal delay for OFF to ON and ON to OFF transitions. Specifically, 0.57 ms and customer selectable 0, 0.57, 9 and 18 ms.

The 1771-IQ16 is mounted to a 1771 chassis. Compatible chassis are 1771-AB thru 1771-A4B chassis. When wiring signal wires to the 1771-IQ16, compatible wire size range is 14 to 122 American Wire Gauge (AWG) stranded or solid copper wire with maximum insulation thickness of 3/64 inch. Module keying is between 22 and 24 / 30 and 32. This module is shipped with a Field Wiring Arm that permits user-friendly installation and maintenance. For Field wiring arm replacement, appropriate part number is 1771-WN.

The 1771-IQ16 has a maximum power dissipation of 15 Watts and minimum power dissipation of 0.5 Watts. While the module’s maximum Thermal Dissipation is 51. 0 BTU / hr while minimum dissipation is 1.7 BTU / hr.

This device features 16 isolated inputs which is used to interface ON/OFF devices. and 1771 Universal I/O structure. This digital DC input module offers a smart choice of 16 inputs and has a voltage capacity of 10-32 volts. The device operates on a backplane current of about 100mA. The maximum DC off-state current consumption for this device is 2mA. In this device, the typical DC signal delay has been designed with four times the filtering capacity or 0, 1, 9, and 18ms. The total AC signal delay which is 35 (+/- 10) ms is the most interesting trait of the 1771-IQ16. These devices come with fused output modules in order to protect module circuitry from getting overloaded. Some of the modules are fused individually while some have the single fuse for all types of module circuits. The fused wiring arm which acts as a shield for each output. This feature makes simple fuse replacement possible without removing the wiring arm from the chassis. You will also get an optional fuse kit with these input modules.