1762-IQ8 | Allen-Bradley Discrete Input Module Supplier

Product Introduction

When reliable discrete input monitoring is required, the 1762-IQ8 provides a compact solution. This Allen-Bradley module is part of the MicroLogix 1200 expansion I/O family and offers eight input channels in a single isolated group. It accepts a nominal input voltage of 24VDC and supports both sink and source wiring configurations.

Key Features & Technical Specs

• Eight input channels in one isolated group with eight channels per group.
• Nominal input voltage of 24VDC with an input voltage range of 10 to 30VDC.
• ON-state current: 2.0 mA minimum at 10VDC, 8.0 mA nominal at 24VDC, 12.0 mA maximum at 30VDC.
• Off-state current maximum of 1.5 mA.
• Signal delay of 8 ms for ON transition.
• Backplane current draw of 50 mA at 5.1VDC and 0 mA at 24VDC.
• Heat dissipation of 3.7 Watts.
• Isolation rating verified by dielectric tests: 1200V ac for 1 second or 1697V dc for 1 second, with 75V dc working voltage (IEC Class 2 reinforced insulation).

Unique Insight: The 1762-IQ8’s 8 ms signal delay ensures consistent response for discrete inputs, making it suitable for applications where timing is critical.

Applications & Use Cases

In manufacturing environments, the 1762-IQ8 monitors limit switches, push buttons, and proximity sensors. Its sink/source flexibility allows integration with various field devices. For example, in a packaging line, the module can detect product presence and trigger downstream actions, reducing downtime.

Installation & Setup

Mount the 1762-IQ8 on a DIN rail or directly to a panel, ensuring 50.8 mm (2 inches) clearance on all sides for proper ventilation. Connect the input terminal block using the finger-safe cover. Configure each channel after installation per the host controller’s programming software.

Maintenance & Reliability

Regularly inspect the module for dust accumulation and ensure the operating environment remains dry and clean. The 1762-IQ8 dissipates 3.7 Watts of heat, so adequate airflow is essential. Follow the manufacturer’s manual for periodic checks to maintain long-term reliability.

Compatibility & Integration

The 1762-IQ8 is compatible with MicroLogix 1100, 1200, 1400, and 1500 controllers. It communicates via the 1762 bus interface and receives power from the backplane. The module uses bit positions 0 to 7 for input terminals.

FAQ about 1762-IQ8

Q: What is the nominal input voltage of the 1762-IQ8?

A: The nominal input voltage is 24VDC, with an operating range of 10 to 30VDC.

Q: How many input channels does the 1762-IQ8 have?

A: It has eight input channels in one isolated group.

Q: Does the 1762-IQ8 support sink and source wiring?

A: Yes, it supports both sink and source wiring configurations.

Q: What is the signal delay for the 1762-IQ8?

A: The signal delay for ON transition is 8 ms.

Q: What is the backplane current draw at 5.1VDC?

A: The backplane current draw is 50 mA at 5.1VDC.

Q: Is the 1762-IQ8 compatible with MicroLogix 1400?

A: Yes, it is compatible with MicroLogix 1100, 1200, 1400, and 1500 controllers.

Product Support & Availability

The 1762-IQ8 is available from Petro Auto Tech. Please verify current lifecycle status and availability before ordering.