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Siemens SIMATIC S5 6ES5451-7LA21 Output Module w/ Short-Circuit Alarm

Siemens SIMATIC S5 451 Isolated Digital Output Module with short-circuit alarm.

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ManufacturerSiemens

Part number6ES5451-7LA21

Manufacturer Siemens

Series SIMATIC S5

Part Number 6ES5451-7LA21

Type Digital Output Module

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32 Isolated Digital Outputs 24V DC Operation 0.5A Current Rating Integrated Short-Circuit Alarm Diagnostic Feedback Designed for SIMATIC S5-115U

Product description

The Siemens 6ES5451-7LA21 is an isolated digital output module from the SIMATIC S5 series, designed for S5-115U PLCs. It features 32 outputs, each rated for 24V DC and 0.5A, with the added functionality of a short-circuit alarm. This alarm feature provides diagnostic feedback, alerting the system to output faults.

This module is essential for industrial control systems where fault detection and rapid troubleshooting are necessary. It is commonly deployed in manufacturing environments, assembly lines, and process control applications that demand high operational reliability and diagnostic capabilities.

Stanlo Automation, your trusted veteran-owned source for surplus industrial automation parts, offers the Siemens 6ES5451-7LA21. Benefit from our extensive inventory and commitment to providing quality components for your automation projects.

Technical specifications

Manufacturer	Siemens
Series	SIMATIC S5
Part Number	6ES5451-7LA21
Type	Digital Output Module
Outputs	32
Output Voltage	24V DC
Output Current	0.5A
Configuration	Isolated
Features	Short-circuit Alarm
PLC Compatibility	S5-115U

Common applications

Industrial Automation

Fault Monitoring

Process Control

Manufacturing

PLC Diagnostics

Automated Assembly

Compatible systems

Siemens SIMATIC S5-115U

Also known as

SIMATIC S5 451 Alarm Module Siemens S5 Output Card Alarm 6ES54517LA21

Replaces / compatible with

This module is a direct replacement for the Siemens 6ES5451-7LA21 within SIMATIC S5-115U systems, offering enhanced diagnostic capabilities.

Technical note

Expert tip

The short-circuit alarm signal can be integrated into the PLC program for sophisticated fault handling and system alerts.

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Frequently asked questions

What diagnostic feature does the Siemens 6ES5451-7LA21 offer?

The Siemens 6ES5451-7LA21 includes a short-circuit alarm feature. This alarm provides immediate notification of output overloads or short circuits, enabling faster troubleshooting and reducing downtime.