1762-IQ8 | Allen-Bradley | MicroLogix 1100/1200/1400 8-Point DC Input Module

Product Description

The 1762-IQ8 is a high-speed digital expansion module engineered for the Allen-Bradley MicroLogix controller family. Featuring 8 points of 24V DC sink/source inputs, this module allows for the seamless integration of field sensing devices—such as limit switches, proximity sensors, and pushbuttons—into your automated control architecture.

Designed for high-density I/O expansion, the 1762-IQ8 (Ser A/B) provides a robust interface between field-level signals and the PLC backplane. It features integrated optical isolation to protect the internal controller circuitry from voltage spikes and electrical noise, ensuring consistent logic execution in electrically "noisy" industrial environments. Its compact, side-locking design allows it to attach directly to the right side of a MicroLogix base unit or another expansion module without the need for an external chassis.

Detailed Technical Specifications

• Model Number: 1762-IQ8

• Brand: Allen-Bradley / Rockwell Automation

• Number of Inputs: 8 Points

• Input Type: 24V DC Sink/Source (Differential)

• Operating Voltage Range: 10–30V DC

• On-State Voltage (min): 10V DC

• Off-State Voltage (max): 5V DC

• On-State Current (min): 2.0 mA

• Nominal Input Impedance: 3.0 kΩ

• Maximum Signal Delay: 8 ms (On/Off)

• Backplane Current (5V DC): 50 mA

• Backplane Current (24V DC): 0 mA

• Isolation Voltage: 1200V AC (for 1 second)

• Operating Temperature: 0 to 55 degrees Celsius (32 to 131 degrees Fahrenheit)

• Mounting: DIN Rail or Panel Mount

• Net Weight: 0.11 kg (0.24 lbs)

Industrial Application Scenarios

The 1762-IQ8 is widely utilized in discrete manufacturing, packaging lines, and small-scale assembly cells. It is the go-to solution for monitoring the status of pneumatic cylinder sensors, safety interlocks, and conveyor photo-eyes, providing the fast response times necessary for high-speed production cycles.

Professional FAQ

• Can I use this module with both NPN and PNP sensors?

  Yes, the 1762-IQ8 supports both Sinking and Sourcing configurations. You simply wire the common (COM) terminal to either the positive or negative side of your power supply depending on your sensor type.

• Does this module require its own 24V DC power supply?

  The module draws its logic power (5V DC) directly from the MicroLogix backplane, but the field-side inputs require an external 24V DC power source to energize the sensing loops.