Allen-Bradley 1756-IA8D Diagnostic Input Module

Allen-Bradley 1756-IA8D ControlLogix Diagnostic AC Input Module

Availability: 1 left in stock

The Allen-Bradley 1756-IA8D is a diagnostic AC input module designed for the ControlLogix platform. This module provides eight diagnostic inputs,...

SKU: 1756-IA8D

Manufacturer: Allen-Bradley
Product No.: 1756-IA8D
Product Type: Digital Input Module
Product Origin: USA
Payment:T/T, Western Union
Weight: 350g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

The Allen-Bradley 1756-IA8D is a diagnostic AC input module designed for the ControlLogix platform. This module provides eight diagnostic inputs, offering enhanced monitoring capabilities for 120V AC signals in industrial automation environments. By incorporating diagnostic features, it allows for improved system reliability and faster troubleshooting by identifying input state changes and fault conditions.

Features

Eight diagnostic AC input channels for precise signal monitoring.
Supports a nominal input voltage of 120V AC.
Programmable input delay times of 9 or 18 milliseconds to accommodate various signal noise environments.
Integrated diagnostic functionality to assist in system maintenance and downtime reduction.
Compatible with the standard 1756 ControlLogix chassis architecture.

Technical Specifications

Product Model	1756-IA8D
Module Type	Diagnostic Input Module
Input Voltage	120V AC
Operating Voltage Range	79-132V AC
Input Delay Time	Programmable (9 or 18 ms)
Min. Operating Current	5 mA at 79V AC
Max. Operating Current	16 mA at 132V AC
Off-State Input Current	2.5 mA
Weight	0.35 kg

Installation Guidelines

Ensure the ControlLogix chassis is powered down before inserting or removing the 1756-IA8D module to prevent electrical damage.
Verify that the module is fully seated in the chassis slot and secured with the top and bottom latches.
Use shielded cabling for input signals to minimize electromagnetic interference (EMI) in high-noise industrial environments.
Adhere to standard ESD (Electrostatic Discharge) practices when handling the module to protect internal circuitry.
Ensure that the input voltage levels remain within the specified 79-132V AC range to maintain optimal diagnostic performance.

FAQ

What is the primary benefit of the 1756-IA8D diagnostic module?
Unlike standard input modules, the diagnostic version provides additional status information regarding the health and state of the input signals, which helps in detecting field wiring faults or signal inconsistencies more rapidly.

Can I program the input delay time on this module?
Yes, the input delay time is user-programmable to either 9 or 18 milliseconds, allowing you to tune the module's response to filter out transient noise on the AC input lines.

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