Siemens 6ED1055-1CB00-0BA2 LOGO! 8 DM8 24 4DI/4DO 24V DC Expansion Logic Module

The Siemens 6ED1055-1CB00-0BA2 is a LOGO! DM8 24 expansion module for LOGO! 8, adding 4 digital inputs and 4 transistor digital outputs at 24 V DC. Outputs are rated 0.3 A each with short-circuit protection, and the module mounts on a 35 mm DIN rail alongside the base LOGO! unit. Switching frequency reaches 10 Hz with a resistive load.

Certifications & Standards

• CE
• CSA
• UL
• FM
• Developed in accordance with IEC 61131
• According to VDE 0631
• Marine

Selection Notes

The transistor outputs at 0.3 A per channel with a 10 Hz switching frequency on resistive loads suit driving PLC or relay coil inputs and pilot indicators directly, rather than switching motor loads that a relay-output DM8 variant would handle at higher current. Matching the 24 V DC supply and I/O voltage to the LOGO! 8 base module avoids adding a separate power supply just to expand I/O count. Choose this module over a smaller expansion when a project needs the extra 4 DI/4 DO in one add-on rather than stacking multiple smaller modules.

Applications

Expanding digital I/O count on LOGO! 8-based control panels for small machine sequencing, building automation, and simple relay-logic replacement where additional inputs or transistor outputs are needed beyond the base unit.