Specifications Parameter Category Details Manufacturer & Series Schneider Electric, Advantys STB Complete Model Number STBDDO3705KS Module Type High-Density Digital Output Module (Sinking) Fieldbus System Requires an STB island bus interface module (e.g., for Ethernet, PROFIBUS) to connect to a PLC. Number of Channels 16 Output Type Sinking (NPN) – Switches the common ground side of the load. Rated Load Voltage 24V DC Nominal Output Current per Channel 0.5 A Maximum Total Current per Module 4 A (shared across all 16 channels, with derating). Not all channels can be used at full current simultaneously. Peak Current per Channel 1.5 A for 100 ms (inrush) Voltage Drop (On-state) Typically < 1.5 V at 0.5 A Leakage Current (Off-state) < 0.1 mA Switching Frequency Up to 1 kHz (resistive load) Surge Suppression Integrated for inductive loads (e.g., solenoid valves, relay coils). This is a key feature of the "KS" variant. Short-Circuit & Overload Protection Group protection (likely per 4 or 8 channels). The module signals a fault to the controller. Isolation 500V AC between field side (outputs) and logic/bus side. Typically no isolation between channels within a group. Status Indicators • Module Status LED (Bicolor): RUN/ERR (Green/Red) for power and communication. • Channel Status LEDs (Green): One LED per channel or grouped (e.g., one per 4 channels) to indicate ON state. Connection High-density, removable screw terminal block (front connector). Wire Gauge (Terminal) Solid or stranded: 0.5 mm² to 1.5 mm² (AWG 20 to AWG 16) Power Supply Powered from the 24V DC Advantys STB island bus. The module's logic and output circuits are supplied from this bus. Power Consumption from 24V DC Bus Logic current: ~80 mA. Load current: Sum of all active outputs (up to 4A max for the module). Operating Temperature 0°C to +60°C Storage Temperature -25°C to +85°C Protection Rating IP20 (for installation inside an enclosure) Mounting Mounts on a standard Advantys STB mounting base (e.g., STBNDMxxxx), snapped onto a DIN rail (35mm). Configuration Software Advantys Configuration Software (ACS) or integrated within some PLC programming environments. Typical Applications Controlling banks of solenoid valves, indicator lights, small relays, or other DC actuators in packaging machines, material handling systems, and automated assembly lines where high output density is required.