Key Parameters 1. Power Supply: Supply Voltage: AC 100-240V Frequency: 50/60 Hz 2. Inputs (I): Number & Type: 12 digital inputs Input Voltage: Compatible with the AC supply range. Typically, 0V = OFF, >79V AC = ON. Configuration: All 12 inputs are configurable as standard control signals, counters, or frequency inputs up to a specified limit (e.g., 10 Hz for AC models). 3. Outputs (Q): Number & Type: 8 relay outputs Contact Rating: Typically 5A @ 250V AC (resistive load). Specific ratings depend on the load type (inductive, lamp, etc.) – refer to datasheet for de-rating curves. Configuration: The outputs are controlled by the internal program logic. 4. Programming & Display: Programming Methods: EASY-SOFT PC Software: Graphical programming via function blocks (FBD). On-device programming: Using the rotary switch (dial), push-buttons, and integrated LCD display for direct configuration and monitoring. Display: 2-line, 16-character LCD for showing I/O status, values, and messages. Memory: Non-volatile memory for storing the application program. 5. Special Functions & Expansion: Integrated Functions: Includes timers (on-delay, off-delay, etc.), counters (up/down), real-time clock (for time-switching functions), analog comparators (for comparing analog input values from expansion modules), and logic gates. Expansion Capability (-RCX models): Can be expanded by connecting EASY expansion modules (e.g., additional digital I/O, analog inputs, analog outputs) via a system connector. The "X" in RCX denotes this expansion capability. 6. Mechanical & Environmental: Mounting: Standard DIN rail mounting (35 mm). Operating Temperature: Typically -20°C to +60°C. Protection Class: Housing typically IP20. 7. Certifications: Complies with major international standards such as cULus, CE, GL, DNV, etc., for use in industrial and shipboard applications. 8. Typical Applications: Lighting control (stairwell, corridor, exterior) HVAC control (pumps, fans, compressors) Motor control (star-delta starters, reversing) Industrial machine control (conveyors, packaging) Automated door and gate systems Pump control and water management