DDK SAN3-24

Technical Specifications

• Power Supply: 24 V DC (±10%)
• Power Consumption: 2 W typical
• Input Channels: 8 digital inputs, PNP/NPN compatible
• Output Channels: 8 digital outputs, PNP type, 2 A max per channel
• Communication Protocols: Ethernet/IP, Modbus TCP, RS-485
• Data Rate: 10/100 Mbps Ethernet
• Operating Temperature Range: -20°C to +70°C
• Storage Temperature Range: -40°C to +85°C
• Humidity Range: 5% to 95% non-condensing
• Protection Rating: IP20
• Certifications: CE, UL, RoHS

Functional Features

• High-speed data processing for real-time control applications
• Wide input voltage tolerance for unstable industrial power supplies
• LED status indicators for each I/O channel and communication link
• Built-in electrical isolation between power and signal circuits
• Watchdog timer for system fault detection and recovery
• Configurable input filter parameters for noise suppression
• Compact form factor for space-constrained installations

Application Scenarios

• Factory automation production line control
• Process monitoring in chemical and energy industries
• Material handling conveyor system control
• Packaging machine I/O expansion
• Remote terminal unit (RTU) for distributed control systems
• Building automation and HVAC control

Material & Structure

• Flame-retardant ABS plastic housing
• Screw-type terminal blocks for secure wiring
• Internal PCB with conformal coating for moisture resistance
• Surface-mount electronic components for high reliability
• DIN rail mounting design with integrated locking clip
• Front-panel labeling for channel identification

Working Principle The module receives input signals from field sensors and switches, conditions and digitizes the signals, and transmits the data to a host controller via the communication interface. It also receives output commands from the controller and drives connected actuators, relays or indicators through its output channels. The built-in processor manages communication protocol handling and I/O scanning in real time.

Installation Requirements

• Mount on standard 35 mm DIN rail
• Allow 20 mm clearance on left and right sides for wiring
• Use 24 AWG to 12 AWG copper conductors for terminal connections
• Connect functional earth terminal for ESD protection
• Install in dry, vibration-free industrial environments
• Torque terminal screws to 0.5 N·m to ensure proper contact

Usage Notes

• Do not apply voltages exceeding the rated input range
• Ensure proper polarity for DC power connection
• Do not exceed maximum output current per channel
• Use surge protection devices on communication lines for outdoor installations
• Periodically check terminal tightness in high-vibration environments
• Do not open or modify internal circuitry