Siemens 6ED1055-1MD00-0BA1 LOGO! AM2 RTD Analog Expansion Module

6ED1055-1MD00-0BA1 provides two RTD temperature-sensor input channels to a compatible LOGO! base module. It is an analog expansion module, not a stand-alone controller.

6ED1055-1MD00-0BA1 supports up to two Pt100 or Pt1000 sensors, including mixed use. Check the sensor's α = 0.003850 temperature coefficient and the exact 0BA1 suffix before ordering.

6ED1055-1MD00-0BA1 supports both 2-wire and 3-wire RTD sensor connections. Use the matching terminal diagram in the Siemens manual for the chosen wiring method.

6ED1055-1MD00-0BA1 uses a 12/24 V DC supply with a permissible range of 10.8–28.8 V DC. Do not assume the base module supplies its operating voltage without checking the wiring plan.

6ED1055-1MD00-0BA1 calls for shielded sensor cable of no more than 10 m, grounded as shown in the Siemens instructions. Incorrect screening can cause fluctuating analog readings.

6ED1055-1MD00-0BA1 is a 36 × 90 × 53 mm expansion module installed alongside a compatible LOGO! base module. Verify module compatibility and physical space before installation.

6ED1055-1MD00-0BA1 should be specified by its full Siemens article number. This 0BA1 RTD variant accepts Pt100 and Pt1000 sensors; the 0BA0 PT100 variant does not. Also confirm the 12/24 V DC supply, sensor wiring and required quantity.