Parameters Parameter Specification Product Range Modicon TM5 Modular I/O System Module Type Relay Digital Output Module Commercial Reference TM5SDO4R Number of Channels 4 Contact Type per Channel SPDT (Form C) – 1 Normally Open (NO) and 1 Normally Closed (NC) contact. Maximum Switching Voltage 250 V AC / 30 V DC Maximum Switching Current 2 A per channel (resistive load @ 30°C). Derating required for inductive or lamp loads. Maximum Inrush Current Lamp load: 10 A for 20 ms. Inductive load (L/R=7ms): 15 A for 20 ms. Minimum Switching Load 10 mA at 5 V DC (to ensure reliable contact wetting). Contact Life Mechanical: ≥ 10 million operations. Electrical: Varies with load (e.g., approx. 100,000 ops @ 2A, 250V AC resistive). Initial Contact Resistance ≤ 100 mΩ Operate/Release Time ≤ 10 ms typical Isolation 1500 V AC between coil and contacts. 1000 V AC between open contacts of different channels. 500 V AC between field side and bus side. Connection Removable screw terminal block (3 terminals per channel: Common (C), Normally Open (NO), Normally Closed (NC)). Diagnostic LEDs Green LED per channel (indicates relay coil energization). Module STATUS LED (Green/Red for power, communication, and error states). Bus Interface TM5 bus via connection to a TM5 base (e.g., TM5SBER2). Power Consumption From 5V bus: 110 mA (typical). Coil power per active channel: ~0.9 W at 24V DC. Operating Temperature 0°C to +60°C Storage Temperature -25°C to +70°C Relative Humidity 10% to 95% (non-condensing) Protection Class IP20 (when mounted on a base in an enclosure). Certifications CE, UL, cUL, RoHS compliant.