Product Overview
The Allen-Bradley 1762-IQ32T is a high-density discrete input module designed for the MicroLogix programmable logic controller (PLC) platform. It adds 32 input channels to your control system, organized into four isolated groups of eight channels each. This module accepts 10-30 VDC signals with a nominal voltage of 24 VDC, making it ideal for monitoring limit switches, proximity sensors, and other DC field devices. Its compact DIN-rail mountable design and robust construction make it a reliable choice for industrial automation.
Technical Specifications
The 1762-IQ32T delivers precise and reliable input sensing with the following key specifications:
| Parameter |
Value |
| Manufacturer |
Rockwell Automation |
| Module Type |
High-density Discrete input module |
| Series |
MicroLogix |
| Part Number |
1762-IQ32T |
| Number of Inputs |
32 channels |
| Isolated Groups |
4 groups of 8 channels |
| Compatible Controllers |
MicroLogix 1100, 1200, 1500 |
| Nominal Input Voltage |
24 VDC |
| Input Voltage Range |
10-30 VDC |
| ON-state Current (min) |
1.6 mA @ 10V DC; 2 mA @ 15V DC |
| Signal Delay (ON transition) |
8 ms |
| Backplane Current (5.1VDC) |
170 mA |
| Backplane Current (24VDC) |
0 mA |
| Isolation Rating |
1200V AC for 2 s or 1697V DC for 2 s; 75V DC working voltage (IEC Class 2 reinforced insulation) |
| Input Power |
24 Volts DC (Sink/Source) |
| Operating Voltage Range |
10 to 26.4 Volts DC |
| Mounting Type |
DIN Rail |
| Bus Current Draw |
0-170 milliamps |
| Signal Delay |
8 milliseconds |
| Heat Dissipation |
5.4 to 6.8 Watts |
Industry Applications
The 1762-IQ32T excels in applications requiring high-density digital input monitoring. Typical use cases include:
-
Machine Control: Monitor limit switches, push buttons, and selector switches on production machinery.
-
Material Handling: Track presence of parts on conveyors using photoelectric or inductive proximity sensors.
-
Process Monitoring: Detect valve positions, level switches, and flow switches in batch processing lines.
Its isolated groups allow mixed wiring configurations, reducing the risk of ground loops and simplifying troubleshooting.
Installation & Setup
Mount the 1762-IQ32T on a DIN rail in a clean, dry, non-hazardous location. Ensure the backplane connector aligns properly with the MicroLogix controller or adjacent expansion module. Wire field devices using the removable terminal blocks, observing the sink/source wiring configuration. The module's input groups are isolated, so you can connect different power sources to each group if necessary. After wiring, configure the module in your programming software to assign input addresses and set filter times if needed.
Maintenance & Reliability
Routine maintenance for the 1762-IQ32T is minimal. Periodically inspect the terminal connections for tightness and check for signs of corrosion or overheating. The module's power LED provides a quick visual status indication. Keep the enclosure free of dust and moisture to maintain reliable operation. With proper care, this module offers long service life, reducing downtime and total cost of ownership.
Compatibility & Integration
The 1762-IQ32T is part of the MicroLogix expansion I/O family and works with MicroLogix 1100, 1200, and 1500 controllers. It communicates via the 1762 bus interface, drawing power from the backplane. This module adds 32 inputs to your system, expanding your I/O capacity without requiring additional controllers.
Buying Guide
When selecting the 1762-IQ32T, verify that your controller model is compatible (MicroLogix 1100, 1200, or 1500) and that your power supply can handle the backplane current draw of 170 mA at 5.1 VDC. Consider the total I/O count and isolation requirements of your application. PLC Source PRO offers genuine Allen-Bradley modules with reliable availability and competitive pricing.