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TM7BDM8A

The Schneider ElectricTM7BDM8x series are Modicon TM7 Discrete I/O expansion blocks designed for industrial PLC systems (such as Modicon M258 and LMC058 controllers). They provide configurable digital inputs and outputs in a rugged, IP67-rated form factor for harsh environments.

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Parameter Value / Description Product Type Discrete digital I/O expansion block Series Compatibility Modicon TM7 (for TM7 base controllers) I/O Channels 8 total I/O (configurable as inputs or outputs) Supply Voltage 24 V DC Input Voltage Type DC — 24 V Input Current (per channel) approx 4.4 mA at 24 V Input Logic Positive logic Output Type Transistor, source, protected Output Current 0.5 A max per channel Total Output Current Up to 4 A block max (via controller power segment) Connector Types M12 (TM7 bus), M8 (power and I/O connectors) Protection Reverse polarity, short-circuit/overcurrent protections (outputs) Status LEDs Bus diagnostics and I/O channel status Operating Temp Range ~-10 °C to +60 °C Storage Temp ~-25 °C to +85 °C IP Rating IP67 (dust and water resistant) Standards IEC 61131-2 compliance