The Siemens 6AG1055-1NB10-7BA2 is a SIPLUS variant of the LOGO! DM16 24R expansion module, based on the standard 6ED1055-1NB10-0BA2 but with conformal coating and a widened temperature range of -40 to +70 °C. It provides 8 digital inputs (24 V DC, sink/source) and 8 relay outputs rated 5 A resistive / 3 A inductive per channel. The module mates directly to a LOGO! 8 base unit over the expansion bus, drawing its power from the 24 V DC backplane. No additional fieldbus configuration needed; the I/O mapping follows the LOGO! slot order.
SIPLUS variant operates -40 to +70 °C, cold-start at -25 °C with condensation permitted. Conformal coating resists coolants, diesel oil, and corrosive gases.
Production status is current — no last-time-buy notice or phase-out indicator. For a maintenance spares buyer, this means the 6AG1055-1NB10-7BA2 remains specifiable for new builds and can be sourced as a one-in-the-cabinet critical spare without risk of imminent obsolescence. The conformal-coated variant is typically stocked against direct order; lead time is quoted per RFQ.
Mounts on 35 mm DIN rail, 4 spacing units wide (71.5 mm). IP20 enclosure. Supply voltage 20.4 to 28.8 V DC. Inputs: >12 V DC threshold, 3.5 mA typ. per channel. Relay outputs NO/NC selectable. Max switching 10 Hz. Depth 58 mm.