Siemens 6ES5241-3BA11 Digital Position Encoder Module

Precise Position Decoding for SIMATIC S5-135/155U Systems

The 6ES5241-3BA11 digital position encoder module belongs to the SIMATIC S5 product family under the IP 241 designation. This “Module Métier” decodes position signals from incremental or absolute encoders connected to the system . It provides accurate position feedback for SIMATIC S5-135U and S5-155U programmable controllers. Consequently, this module enables precise motion control and positioning tasks in demanding industrial applications.

Technical Specifications

Position Decoding Capabilities

The 6ES5241-3BA11 processes position signals from a variety of incremental and absolute encoders. It interprets pulse trains and zero mark signals to determine precise position and direction data . The module supports both symmetrical 5 V encoders (up to 500 kHz) and asymmetrical 24 V encoders (up to 100 kHz) . Moreover, it works with encoders that supply two pulse trains with a 90° phase shift, ensuring reliable position determination. The module also processes the zero mark signal for referencing purposes.

System Integration and Application

This position decoder module fits standard S5-135U and S5-155U rack configurations. It interfaces directly with the backplane bus for seamless data exchange with the CPU. The 6ES5241-3BA11 suits positioning applications such as conveyor control, robotic axis monitoring, and precision material handling. Users can connect encoders via shielded cables, with maximum cable lengths depending on the encoder type and voltage level . The module’s integration simplifies motion control system architecture.

Physical Characteristics

The 6ES5241-3BA11 module weighs approximately 0.40 kg, making it a lightweight addition to S5 rack systems . It occupies one slot within the chassis, allowing efficient use of rack space. Its compact dimensions include a width of 270 mm, a height of 30 mm, and a depth of 210 mm according to listing data .

Product Status and Support

Siemens no longer produces this module as a current product. However, users can find the 6ES5241-3BA11 through various industrial automation distributors offering new old stock or refurbished units. Many suppliers provide a 12-month warranty on these legacy modules .