Technical Parameters (EC20-1600ENN) Model: EC20-1600ENN Product Type: Digital Input Expansion Module Compatible PLC Series: EC20 Series Modular PLC Input Points: 16 points Input Type: Sink/Source (typically 24V DC, compatible with both NPN and PNP sensors) Rated Input Voltage: 24V DC (typical) Input Voltage Range: 0-30V DC (with specified ON/OFF thresholds) ON Voltage: >15V DC (typical) OFF Voltage: <5V DC (typical) ON Current: 4-7mA at 24V DC (typical) Input Impedance: Approximately 4.7kΩ (typical) Isolation: Opto-isolated (photocoupler) between input and PLC internal circuits Isolation Voltage: 500V AC (typical) Response Time: Programmable filter settings (0-20ms typical) High-Speed Inputs: Some channels may support high-speed counter functions (check manual) Common Grouping: Typically grouped in commons of 8 or 16 (COM0, COM1, etc.) Indicators: Green LED per input channel (on when input energized) Expansion Bus Connection: Via EC20 expansion connector (right-side connection for daisy-chain) Power Supply: Supplied from EC20 CPU via expansion bus External Power: 24V DC required for field devices (not supplied by module) Power Consumption: Low power consumption (typically <1W) Terminals: Pluggable screw terminal blocks (removable for easy wiring) Wire Size: 0.2 - 2.5 mm² (24-12 AWG) Protection Class: IP20 (requires enclosure for installation) Operating Temperature: 0°C to +55°C Storage Temperature: -20°C to +70°C Humidity: 5% to 95% RH (non-condensing) Dimensions (H x W x D): Approx. 130 mm x 50 mm x 100 mm (5.1" x 2.0" x 3.9") - typical EC20 expansion module size Weight: Approx. 0.15 kg (0.33 lbs) Standards: CE, UL (pending), RoHS, compliant with EC20 system specifications