Siemens LOGO! DM8 230R Expansion Module 6ED1055-1FB00-0BA2, 230V AC Input, 5A Relay Output

The Siemens LOGO! DM8 230R is a high-performance digital expansion module specifically engineered to extend the capabilities of the LOGO! logic module series. This unit provides additional input and output points, allowing for more complex control configurations in industrial and building automation environments. Operating on a 230V AC supply, it ensures seamless integration into existing electrical systems, providing robust signal processing and reliable switching through its integrated relay outputs.

Advantages

This expansion module offers significant flexibility for automation projects by allowing users to scale their control systems according to specific requirements. Its design focuses on durability and ease of installation, making it a reliable choice for demanding industrial applications. The inclusion of relay outputs provides high current handling capabilities, which simplifies the control of external devices such as contactors, valves, or indicator lights without the need for additional intermediate relays.

Suitable for

• Industrial automation and control systems
• Building management and lighting control
• HVAC system integration
• Small-scale machinery automation
• Process monitoring and signal switching

When it may not be suitable

This module is designed exclusively for 230V AC systems and is not compatible with low-voltage DC control circuits. It should not be used in applications requiring high-speed pulse counting or analog signal processing, as it is strictly a digital I/O expansion unit.

Key specifications

• Input voltage: 230V AC
• Output type: Relay
• Maximum switching current: 5A
• Compatibility: LOGO! logic modules
• Mounting: DIN rail

How to use

To integrate the module, mount it onto a standard DIN rail adjacent to the main LOGO! base module. Connect the expansion bus cable to the interface port on the side of the base unit. Wire your digital inputs and relay outputs according to the terminal diagram provided on the housing. Ensure that the power supply matches the 230V AC requirement before energizing the system. Once connected, the LOGO! software will automatically detect the additional I/O points for configuration within your control program.

What to consider before purchase

• Verify that your existing LOGO! base module supports expansion modules
• Ensure the power supply voltage matches the 230V AC specification
• Check that the 5A relay output capacity is sufficient for your connected loads
• Confirm available space on the DIN rail for the additional module width

Usage recommendations

Always ensure that the power is disconnected during installation and wiring to prevent electrical hazards. Use appropriate wire gauges and ferrules for secure terminal connections, and verify that the total load on the relay outputs does not exceed the specified 5A limit to maintain long-term operational reliability.