Siemens 6ED1055-1MD00-0BA2 LOGO! expansion modules. Siemens 6ED1055-1MD00-0BA2 is the exact printed commercial reference for a programmable logic relay in the LOGO! Logic Modules range. Siemens' official product description is: LOGO! AM2 RTD expansion module, PS: 12/24 V DC, 2AI-50..+200°/C Pt100/1000 for LOGO! 8.