Allen Bradley 1746-IA8 /A 8 Point Input Module

Allen-Bradley 1746-IA8 /A 8-Point Input Module

The Allen-Bradley 1746-IA8 /A is an 8-point AC input module designed for integration with the SLC 500 series of programmable logic controllers (PLCs). This module facilitates the monitoring of AC input signals, enabling efficient control and automation within industrial settings.

Key Features

• Input Channels: 8 individual input points, allowing for multiple AC signal inputs.
• Voltage Range: Operates within an input voltage range of 85 to 132 Volts AC, with a nominal rating of 100/120 Volts AC.
• Frequency Compatibility: Supports input signal frequencies between 47 and 63 Hz.
• Backplane Current Consumption: Consumes 50 milliamps at 5 Volts DC from the backplane.
• Signal Delay: Features a maximum signal ON delay of 35 milliseconds and an OFF delay of 45 milliseconds.
• Thermal Dissipation: Dissipates 0.27 Watts per input point, with a total maximum thermal dissipation of 2.4 Watts.
• Isolation Voltage: Provides isolation with 500 Volts DC at the communication circuit and 1500 Volts AC at the backplane.

Physical Specifications

• Dimensions: Measures approximately 5.0 inches in height, 2.0 inches in width, and 6.0 inches in depth (13 cm x 5 cm x 15 cm).
• Weight: Weighs around 0.23 kilograms (0.5 pounds).

Applications

The 1746-IA8 /A module is suitable for various industrial automation applications, including:

• Monitoring the status of AC-powered limit switches, photoelectric sensors, and other AC devices.
• Reading signals from pushbuttons or toggle switches connected to an AC power source.
• Controlling devices based on the state of the AC inputs, such as activating solenoids or relays.

This module’s design ensures reliable performance in monitoring and controlling AC input signals, making it a valuable component in industrial automation systems.