Key Technical Parameters Parameter Specification Order No. 1394400000 Type UR20-8DI-P-3W Version Remote I/O module, IP20, Digital signals, Input, 8-channel Dimensions & Weight Parameter Specification Width 11.5 mm (0.453 inch) Height 120 mm (4.724 inch) Depth 76 mm (2.992 inch) Net weight 83 g Electrical Specifications (Inputs) Parameter Specification Number of digital inputs 8 Input type P-switching (positive switching) Input standard Type 1 and 3, EN 61131-2 Input voltage, high > 11 V Input voltage, low < 5 V Input filter Configurable (adjustable via software) Sensor connection 2-wire, 3-wire Sensor supply Yes (750 mA nominal, 8 A max total) Reverse polarity protection Yes Module diagnosis Yes (1 Bit diagnostic data) Individual channel diagnosis No Galvanic isolation 500 V DC between current paths Power Supply Parameter Specification Supply voltage 24 V DC (+20% / -15%) via system bus Current consumption (Isys, typ.) 8 mA Current consumption (IIN, typ.) < 22 mA + sensor feed Connection Data Parameter Specification Connection type PUSH IN Wire cross-section (solid) 0.14…1.5 mm² (AWG 26…16) Wire cross-section (stranded/finely stranded) 0.14…1.5 mm² (AWG 26…16) System & Communication Parameter Specification Interface u-remote system bus System bus transmission rate, max. 48 Mbit/s Process data 1 Byte Diagnostic data 1 Bit Fieldbus protocols PROFINET IRT/RT, EtherCAT, Modbus/TCP, EtherNet/IP, CANopen, PROFIBUS DP-V1, CC-Link, and many more Environmental & Compliance Parameter Specification Operating temperature -20 °C … +60 °C Storage temperature -40 °C … +85 °C Protection class IP20 Mounting TS 35 rail Pollution severity 2 Overvoltage category II Flammability rating UL 94 V-0 Shock resistance 15 g over 11 ms, half sinus wave (IEC 60068-2-27) Vibration resistance 5 Hz ≤ f ≤ 8.4 Hz: 3.5 mm amplitude; 8.4 Hz ≤ f ≤ 150 Hz: 1 g acceleration (IEC 60068-2-6) Certifications cULus (E141197), cULusEX (E223527), DNV/GL, Lloyds Register, ABS, RINA, Bureau Veritas, ClassNK, CCC, CE, UKCA, ATEX, IECEx, KC RoHS status Compliant with exemption (7a, 7cI) REACH SVHC Lead (7439-92-1)