Parameters Parameter Specification Product Range Modicon TM5 Modular I/O System Module Type High-Speed Isolated Digital Input Module Commercial Reference TM5NS31 Number of Channels 3 Input Type Sink/Source (PNP/NPN) compatible, with individual channel isolation Input Voltage Range 5 to 30 V DC "1" Signal Level ≥ 3.5 V DC (at 3 mA) "0" Signal Level ≤ 1.5 V DC Input Impedance Approximately 4.7 kΩ Maximum Input Frequency 100 kHz per channel Minimum Pulse Width 5 µs Filtering Configurable per channel (software): 0.1 ms, 0.2 ms, 0.5 ms, 1 ms, 2 ms, 5 ms Isolation 500 V AC between field side and bus side; 250 V AC between channels. Connection Removable screw terminal block (2 terminals per channel). Diagnostic LEDs Green LED per channel (indicates "ON" state). Module STATUS LED (Green/Red for power, communication, and error states). Bus Interface TM5 bus via connection to a TM5 base (e.g., TM5SBER2). Hot Swappable Yes (on supported controllers like M251/M262 with TM5 bus extenders). Power Consumption From 5V bus: 110 mA (typical). From 24V field supply: depends on connected sensors. Operating Temperature 0°C to +60°C Storage Temperature -25°C to +70°C Relative Humidity 10% to 95% (non-condensing) Certifications CE, UL, cUL, RoHS compliant.