Siemens 6ES5451-4UA12 Digital Output Module

High-Density Discrete Outputs for SIMATIC S5 Systems

The 6ES5451-4UA12 digital output module provides 16 transistor outputs for the SIMATIC S5 automation platform. This module drives various field devices including contactors, solenoids, and indicator lamps. It delivers 24 V DC outputs with a current rating of 0.5 A per channel. Consequently, this module offers a reliable solution for controlling standard industrial loads.

Technical Specifications

Output Protection and Diagnostics

This output module includes comprehensive protection for reliable field operation. The 6ES5451-4UA12 features short-circuit protection on each individual output channel. It also provides overload protection with automatic reactivation after fault removal. An integrated diagnosis LED indicates each channel’s status for quick troubleshooting. Furthermore, the module resets automatically when the fault condition clears.

Physical Characteristics and Installation

The 6ES5451-4UA12 weighs approximately 0.55 kg and fits standard S5 rack slots. It uses screw terminal connections for secure and straightforward field wiring. This module draws minimal power from the backplane bus and dissipates up to 6 W maximum. Its compact design allows dense I/O configurations within the S5 system.

Switching Performance and Compatibility

This output module handles a switching frequency of 100 Hz for resistive loads. For inductive loads, the module supports switching up to 10 Hz. Users can connect the 6ES5451-4UA12 directly to solenoid valves, motor starters, and relays. Furthermore, this module works with all SIMATIC S5 CPUs.

Certifications and Quality Assurance

The 6ES5451-4UA12 carries CE, UL, and CSA certifications. It conforms to EN 61131-2 standards for programmable controllers.