Product Overview
When expanding your MicroLogix control system, the Allen-Bradley 1762-IQ8 discrete input module delivers reliable eight-channel sensing for 24VDC field devices. This single-slot-width module integrates seamlessly with MicroLogix 1100, 1200, 1400, and 1500 controllers, offering a cost-effective upgrade path for applications requiring additional digital inputs. Built for dry, clean environments, it supports both sink and source wiring configurations and provides an isolated input group with eight channels.
Technical Specifications
| Parameter |
Value |
| No. of Inputs |
8 channels |
| Input Voltage Range |
10–30 VDC at 30°C; 10–26.4 VDC at 55°C |
| Nominal Input Voltage |
24 VDC |
| ON-state Current (min./nom./max.) |
2.0 mA min. at 10 VDC; 8.0 mA nom. at 24 VDC; 12.0 mA max. at 30 VDC |
| Off-state Current (max.) |
1.5 mA |
| Signal Delay |
8 ms (ON to OFF and OFF to ON) |
| Backplane Current (5.1 VDC) |
50 mA |
| Backplane Current (24 VDC) |
0 mA |
| Isolation |
1200 VAC for 1 s or 1697 VDC for 1 s; 75 VDC working voltage (IEC Class 2 reinforced) |
| Power Consumption |
0.25 W |
| Heat Dissipation |
3.7 W |
| Wiring Configuration |
Sink/Source |
| Mounting |
DIN rail or direct panel |
Industry Applications
The Allen-Bradley 1762-IQ8 discrete input module is ideal for upgrading legacy systems or adding capacity in manufacturing lines, conveyor systems, packaging machines, and material handling equipment. Its 24 VDC nominal input and reliable 8 ms signal delay suit fast sensing tasks such as limit switches, proximity sensors, and push-button panels. With an isolated group design, it minimizes noise interference in electrically noisy environments.
Mounting and Installation Guidance
Mount the Allen-Bradley 1762-IQ8 discrete input module on a DIN rail or directly to a panel using the provided slots. Maintain a minimum clearance of 50.8 mm (2 inches) on all sides to ensure adequate airflow and cooling. Use the finger-safe terminal blocks for wiring; connect sinking or sourcing field devices as per your application. Always remove power before servicing and follow electrostatic discharge prevention practices. Install the module in a non-hazardous, dry, and clean location with circuits not exceeding Over Voltage Category II.
Compatibility and System Integration
The Allen-Bradley 1762-IQ8 discrete input module is compatible with MicroLogix 1100, 1200, 1400, and 1500 controllers. It communicates via the 1762 bus interface and draws 50 mA from the 5.1 VDC backplane. The module occupies one slot and operates as an expansion I/O module. No additional communication protocol configuration is required; the controller automatically recognizes the module upon installation.
Selection Guide and Purchasing Advice
Before purchasing the Allen-Bradley 1762-IQ8 discrete input module, verify that your MicroLogix controller has an available expansion slot and that the total system power budget can accommodate the 50 mA backplane current. For assistance with compatibility or technical questions, contact ubest101 for expert support. UBEST Automation stocks genuine Allen-Bradley parts, ensuring reliable performance for your automation projects.