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Allen Bradley 123178 16-Point DC Input Module

Allen Bradley 123178 16-point DC Digital Input Module for SLC 500.

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ManufacturerAllen Bradley

Part number123178

Number of Inputs 16

Input Voltage 24V DC (12-24V DC)

Isolation 1400V DC

Backplane Current 125mA @ 5V DC

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Veteran-owned

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16 Digital DC Inputs 24V DC Operation 1400V DC Isolation Compatible with SLC 500 High Reliability Efficient Slot Usage

Product description

The Allen Bradley 123178 is a 16-point DC input module designed for the SLC 500 series. It reliably interfaces digital input signals from field devices such as switches, sensors, and pushbuttons to the PLC. This module offers robust performance and is crucial for accurate data acquisition in automation systems.

This input module is widely used in various industrial applications including manufacturing, material handling, and process control. It allows the PLC to monitor the status of equipment and processes, enabling precise control and automation sequences. Its 16-point configuration provides efficient use of chassis slots.

Stanlo Automation, your trusted veteran-owned supplier of surplus industrial automation parts, offers the Allen Bradley 123178. We ensure each part is quality-checked, providing you with a dependable and cost-effective solution for your automation needs.

Technical specifications

Number of Inputs	16
Input Voltage	24V DC (12-24V DC)
Isolation	1400V DC
Backplane Current	125mA @ 5V DC
Module Type	Input Module
Series	SLC 500

Common applications

Machine Control

Process Monitoring

Automation Systems

Manufacturing Equipment

Material Handling

Safety Interlocks

Compatible systems

SLC 500 Chassis (e.g., 1746-A4, 1746-A7, 1746-A10, 1746-A13, 1746-A14)

Also known as

Allen Bradley SLC 500 Input Module AB 123178 1746-IB16

Replaces / compatible with

The 123178 is a 16-point DC input module for the Allen Bradley SLC 500 system, often used as a replacement for the 1746-IB16.

Technical note

Expert tip

Ensure that the field wiring is properly terminated to the correct terminals to avoid short circuits and ensure accurate input signal registration.

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Frequently asked questions

What is the input voltage range for the Allen Bradley 123178 module?

The Allen Bradley 123178 module accepts a 24V DC input voltage, with a typical operating range of 12-24V DC, making it compatible with most standard DC field devices.