Siemens 6ED1055-1FB00-0BA2 / Siemens 6ED1055-1FB10-0BA2 are LOGO! 8 digital expansion modules that add mains-voltage inputs and potential-free relay outputs to a compatible LOGO! base module. The DM8 230R contributes four inputs and four outputs, while the DM16 230R expands the same sensing-and-switching role to eight inputs and eight outputs.
Field states enter Siemens 6ED1055-1FB00-0BA2 / Siemens 6ED1055-1FB10-0BA2 through the 115/230 V input terminals and are transferred as logic states across the LOGO! expansion interface. Program results return over that interface to the relay stage, where each contact opens or closes an externally supplied load circuit; the expansion bus carries status and commands, not the load energy.
Installed to the right of the base module, Siemens 6ED1055-1FB00-0BA2 / Siemens 6ED1055-1FB10-0BA2 follow the physical expansion order used for I/O addressing. On the 230 V input side, terminals form groups whose conductors must use the permitted phase arrangement, while the load side retains separate protection and supply wiring for the relay circuits.
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