PLCs, Power Supplies & Others

High-Current Output for SIMATIC S5

The Siemens 6ES5451-8MR12 provides 8 digital output channels for the SIMATIC S5 PLC platform. This module delivers 2 amperes per channel for driving solenoids, contactors, and indicator lamps . It operates at a nominal 24 V DC voltage for standard industrial compatibility . Consequently, this output module suits machine control, conveyor systems, and packaging equipment.

Output Specifications and Protection Features

The 6ES5451-8MR12 uses transistor outputs with integrated freewheeling diodes for inductive loads . Each output channel includes short-circuit protection for fault tolerance . The module also features overload protection that limits current during abnormal conditions . Furthermore, thermal protection shuts down affected channels to prevent hardware damage .

Diagnostic and Status Indication

LED indicators on the front panel show the status of each output channel individually . A common power LED indicates the presence of the external 24 V supply . The Siemens 6ES5451-8MR12 provides diagnostic feedback through the PLC backplane . This feature enables rapid identification of faulty outputs during maintenance .

Physical Specifications and Installation

The module weighs 0.6 kilograms and fits standard S5 single-width housing dimensions . It plugs directly into the SIMATIC S5 rack without additional cabling . The 6ES5451-8MR12 uses a 20-pin front connector for field wiring termination . Its IP20 rating ensures protection against solid objects in control cabinets .

Electrical and Environmental Specifications

This output module requires a 24 V DC power supply for its output circuits . It draws 100 mA from the backplane and 70 mA from the load supply . The Siemens 6ES5451-8MR12 functions between 0 and 60 °C ambient temperature . It stores from -40 to 70 °C during transportation or idle periods .

Technical Specifications

Details