Product Overview

The 1734-IB8 is a digital input module from the Allen-Bradley Point I/O family. It provides eight sinking input channels for 24V DC signals. This module is designed for use with a compatible Point I/O adapter. It offers high-density input monitoring for discrete sensors and switches. The module supports a wide range of industrial control applications.

Each input channel features a dedicated LED indicator for quick status diagnosis. The module uses a removable terminal block for easy wiring. It is a compact, modular component that saves panel space. The design supports hot-swapping in many system configurations. This allows for reduced downtime during maintenance.

The module communicates with the system bus through the Point I/O backplane. It does not require a separate power supply connection to the backplane. The module receives its power from the network adapter. This simplifies installation and reduces wiring complexity.

Application Scenarios

This module is suitable for monitoring discrete input devices. Typical applications include push buttons and limit switches. It can also monitor proximity sensors and photo eyes. The module is used in assembly lines and packaging machines. It works well in material handling and conveyor systems.

It is ideal for any machine requiring 24V DC input sensing. The module can be used in standalone or distributed I/O architectures. It is compatible with various Allen-Bradley controllers. These include ControlLogix and CompactLogix systems. The module is also used with MicroLogix and SLC platforms via adapters.

The module is suitable for both OEM and end-user installations. It is used in automotive, food and beverage, and pharmaceutical industries. The module can be placed in remote I/O panels. This reduces wiring runs from field devices to the main controller.

Technical Specifications

The 1734-IB8 module has eight sinking inputs. Each input is rated for 24V DC nominal voltage. The input voltage range is from 10 to 30V DC. The module has a typical input current of 8 mA per channel. The off-state voltage is less than 5V DC. The off-state current is less than 1.5 mA.

The module provides input filtering with a typical delay of 1 ms. The off-to-on delay is up to 1 ms. The on-to-off delay is also up to 1 ms. The module is isolated from the system backplane. It has a power dissipation of 1.5 W maximum. The module operates in a temperature range of 0 to 55 degrees Celsius.

The module is housed in a robust plastic enclosure. It has an IP20 protection rating. The module dimensions are approximately 90 mm high by 40 mm wide by 75 mm deep. The module weight is approximately 0.1 kg. The module is UL, CE, and CSA certified.

Installation & Maintenance Guide

Mount the module onto a DIN rail or panel. Use the provided mounting foot for DIN rail installation. Ensure the module is securely latched onto the rail. Connect the module to the adjacent module or adapter using the side connectors. Tighten the terminal block screws to the specified torque.

Wire the field devices to the removable terminal block. Use copper wire with a temperature rating of 75 degrees Celsius. Strip the wire insulation to the recommended length. Insert the wire into the correct terminal and tighten the screw. Verify the wiring against the module pinout diagram.

Apply power to the system after all connections are verified. Check the module status LED for proper operation. A solid green LED indicates normal operation. A flashing green or red LED indicates a fault condition. Refer to the user manual for detailed LED status codes.

Periodically inspect the module for dust or debris. Clean the module with a dry, soft cloth if needed. Do not use solvents or abrasive cleaners. Ensure the ventilation slots are not blocked. Replace the module if it shows signs of physical damage.

Frequently Asked Questions (FAQ)

What is the primary function of 1734-IB8?

It is a digital input module that monitors eight 24V DC sinking signals from field devices such as sensors and switches.

What is the input voltage range for this module?

The input voltage range is 10 to 30V DC, with a nominal rating of 24V DC.

Can this module be used with a CompactLogix controller?

Yes, it can be used with CompactLogix controllers when paired with a compatible Point I/O adapter like the 1734-AENT.

What is the typical input current per channel?

The typical input current is 8 mA per channel at 24V DC.

Does the module require a separate power supply?

No, it does not require a separate power supply. It receives power from the Point I/O network adapter via the backplane.