Description
Eaton MTL4850
Technical Specifications: Mounting: 35mm standard DIN rail Certification: ATEX intrinsic safety certification Supply voltage: 24V DC Operating temperature: -20℃ ~ +60℃ Protection rating: IP20 Terminal type: Removable screw terminal blocks Isolation: Galvanic isolation between safe and hazardous circuits
Functional Features: Intrinsic safety energy limiting circuit to protect explosive environment. Galvanic isolation cuts off direct electrical connection between field and control side. Compact slim housing to save cabinet installation space. Detachable terminals for convenient wiring and replacement. Power and fault LED indication on front panel. Continuous field loop fault monitoring function.
Application Scenarios: Oil refineries, natural gas processing, chemical plants, pharmaceutical hazardous workshops, coal chemical industry, DCS control cabinets for pressure, temperature, level and flow transmitters.
Performance Parameters: Isolation dielectric strength: Meet industrial safety test standard. Signal transmission accuracy: Minimal signal attenuation for 4-20mA loop. Fault detection speed: Rapid response for wire break and short circuit.
Material Composition: Module housing: Flame retardant polycarbonate plastic. PCB: FR4 high temperature resistant printed circuit board. Safety components: Intrinsic safety resistors, capacitors, isolation optocouplers. Terminals: PA66 flame retardant plastic and copper alloy conductive parts.
Structural Features: Thin rectangular DIN rail module body. Spring clip on back for DIN rail mounting. Front removable terminal blocks for signal wiring. Front panel LED indicator lights. Internal isolation barrier separates hazardous circuit and safe circuit.
Working Principle: Field instrument signal from hazardous area connects to hazardous side terminals of MTL4850. Intrinsic safety components restrict voltage and current so that energy released to field circuit cannot ignite flammable gas mixture. Isolation element transfers signal to safe side circuit with no direct electrical path. Safe side signal is sent to DCS or PLC system. The module monitors loop status continuously and indicates fault when wiring failure occurs.
Installation Requirements: Mount module on 35mm DIN rail inside safe control cabinet. Route hazardous field cables and safe control cables separately. Connect cabinet protective earth ground to designated grounding point. Tighten terminal screws to recommended torque. Reserve spacing between modules for heat dissipation.
Usage Notes: Only install module in safe area control cabinet, not in hazardous zone. Check entity parameters matching with field instruments before commissioning. Do not open module housing or change internal components. Prevent overvoltage input to module terminals. Carry out periodic inspection for terminal looseness and cable aging.
