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TM7BDM8B

TheSchneider Electric TM7BDM8B is a discrete digital I/O expansion block in the Modicon TM7 modular automation platform. It provides a rugged, IP67-rated interface with a total of 8 configurable digital channels that can be used as inputs or outputs depending on your application needs. Designed for use with controllers such as Modicon LMC058 and Modicon M258, the module connects via the TM7 bus and supports distributed, decentralized I/O configurations in harsh industrial

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Parameters Power & General Rated supply voltage: 24 V DC Supply range: 18…30 V DC 24 V DC I/O segment current draw: ~105 mA TM7 power bus current draw: ~38 mA Power dissipation: ~4.3 W max. Weight: ~190 g Protection: Reverse polarity protection I/O Characteristics Total I/O channels: 8 configurable digital channels Discrete input type: Sink (positive logic) Input voltage range: 18…30 V DC Input current (at 24 V): ~4.4 mA Input impedance: ~5 kΩ Input logic levels: OFF < 5 V; ON > 15 V with ≥3.5 mA Discrete output type: Source, transistor with protection Output current (per channel): 0.5 A max. Total output current (block): 4 A max. Output voltage range: 18…30 V DC Voltage drop at 0.5 A: ~0.3 V max. Leakage current (off): ~5 μA Typical switching speeds: ~400 μs turn-on/off; ~100 Hz resistive load Short-circuit peak current: ~12 A max. Protection: Short-circuit/overcurrent and thermal protection with automatic reset Connectors & Field I/O Bus connectors: M12 B-coded IN/OUT for TM7 bus Power connectors: M8 for 24 V DC IN/OUT Sensor/Actuator I/O: Eight M8 3-pin connectors Local LEDs: Status indication for bus and power/I-O statuses Environmental Protection rating: IP67 (dust/water resistant) Operating temperature: ~-10 °C to +60 °C (typical for TM7 blocks) Storage temperature: ~-25 °C to +85 °C Standard compliance: IEC 61131-2 EM immunity and shock/vibration resistance