PLCs, Power Supplies & Others

Product Overview

The Siemens 6ES5701-0LA11 is a 6-slot expansion sub-rack designed for SIMATIC S5-115U programmable logic controllers. This sub-rack provides additional mounting space for up to six I/O modules or function modules. Consequently, it extends the system’s capacity beyond the main rack limitations.

Mechanical and Physical Specifications

The 6ES5701-0LA11 offers a compact and robust housing for industrial control environments. It has a width of approximately 200 mm, which makes it suitable for standard 19-inch cabinet mounting . Additionally, this 6-slot sub-rack weighs roughly 2 kg without modules .

Functional Features and Integration

This 6-slot sub-rack connects to the central CPU rack through an interface module (IM), allowing seamless expansion of your S5-115U system. For example, you can install additional digital or analog I/O modules to increase channel count. Therefore, the 6ES5701-0LA11 provides a scalable platform for growing automation needs.

The 6ES5701-0LA11 features a passive backplane that distributes signals and power to plugged-in modules. Since the sub-rack relies on an external power supply, it must connect to the CPU rack’s power supply or a dedicated power module for voltage delivery. Furthermore, the sub-rack supports various module types, including relay outputs and high-speed counter modules.

Applications in Legacy Automation

The 6ES5701-0LA11 finds use in a broad range of applications, such as material handling, packaging machinery, and conveyor systems. Specifically, Siemens S5-115U systems often require extra slots when integrating multiple control loops. Consequently, this sub-rack helps engineers expand system I/O without redesigning the entire control cabinet.

Details