Overview
The 6ED10521CC080BA2 is a Siemens LOGO! 8.4 expansion module — 8 digital inputs, of which 4 can be used in analog mode (0 to 10 VDC), and 4 transistor outputs rated at 0.3 A switching current.
This module extends the I/O capacity of a LOGO! 8.4 base unit. The 8 inputs accept standard 24 V DC digital signals; the first 4 channels can also read 0-10 VDC analog signals, eliminating the need for a separate analog input module on small applications. The 4 transistor outputs switch DC loads up to 0.3 A each — suitable for pilot lights, small contactors, or solid-state relays. An integrated real-time clock supports time-based logic, and the Ethernet interface allows remote programming and HMI connectivity.
Applications
LOGO! 8.4 expansion modules are used in small-scale automation — lighting control, HVAC zone management, pump sequencing, conveyor interlocks, and simple packaging machines. The mixed digital/analog input set suits applications that need a few analog sensors (temperature, pressure, level) alongside discrete signals, all within a compact DIN-rail footprint.