SIPLUS LOGO! 230RCEO — extended-temperature logic module with conformal coating
The Siemens 6AG1052-2FB08-7BA0 is a SIPLUS LOGO! 230RCEO logic module based on the standard 6ED1052-2FB08-0BA0, with conformal coating and an extended temperature range of -40 to +70 °C (cold start at -25 °C, condensation permitted but not commissioning under condensation). It packs 8 digital inputs (4 usable as analog inputs), 4 relay digital outputs rated 10 A resistive / 3 A inductive, and 400 function-specific program blocks into a 4-SU wide DIN-rail housing.
What the temperature and coating ratings mean for the BOM
The -40 °C floor and +70 °C ceiling cover unheated enclosures, freezer lines, and roof-mounted cabinets in direct sun — the conformal coating (IPC-CC-830A Class A) protects against condensation, coolant mist, and diesel/oil droplets in the air, so this module survives environments where standard LOGO! units fail from moisture tracking. The cold-restart limit at -25 °C means the module powers on and executes its program below freezing, but commissioning (programming, wiring checks) should happen above that threshold to avoid frost on the electronics.
Eight digital inputs accept 115/230 V AC or DC (47-63 Hz AC, 100-253 V DC), and the four relay outputs switch up to 10 A resistive or 3 A inductive — enough for direct control of small contactors, solenoid valves, and indicator loads without an interposing relay. Program memory holds 400 function-specific blocks, and the integrated power reserve keeps the real-time clock and retentive data alive for 480 hours during a power loss — no battery to replace. The module snaps onto a 35 mm DIN rail and occupies 4 spacing units (71.5 mm wide), with IP20 finger-safe protection for panel installation.
Environmental compliance and industrial-grade protection
Rated for use in residential areas (EN 55011 Class B), protected against fouling per EN 60664-3 Type 1, and resistant to harmful gas concentrations up to EN 60721-3-3 class 3C4, salt spray level LC3, and oil level LB3 per ANSI/ISA-71.04. Maximum installation altitude is 2,000 m above sea level, with ambient pressure derating from 1,140 hPa to 795 hPa over that range.