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ABB SC520 3BSE003816 Submodule Carrier
1. Product Overview
The ABB SC520 3BSE003816 is an industrial-grade submodule carrier designed for ABB automation systems (e.g., AC 800M DCS). It serves as a mechanical and electrical platform to mount, power, and enable communication between compatible I/O submodules (e.g., digital/analog input/output modules), ensuring seamless integration into centralized control systems for harsh industrial environments.
2. Technical Specifications
2.1 Carrier Performance
- Submodule Slots: 2 independent slots (supports ABB standard I/O submodules, e.g., DSDI 110A, DSDO 115A)
- Communication Interface: Integrates with AC 800M system bus (high-speed data transfer; up to 100 Mbps)
- Power Distribution: Supplies 24 V DC ±15% to mounted submodules (max 5 A total output for 2 slots)
2.2 Electrical & Isolation
- Supply Voltage: 24 V DC ±15% (powered via system backplane or external redundant supply)
- Power Consumption: Typical 2 W (carrier alone); Maximum 7 W (with 2 fully loaded submodules)
- Isolation: 2 kV AC between system bus and submodule slots; 500 V AC between adjacent submodule slots
2.3 Mechanical & Environmental
- Dimensions: 140×75×30 mm (Length×Width×Height); fits standard DIN rail cabinets
- Mounting: DIN rail (compliant with EN 50022 standard); compatible with ABB system racks
- Operating Temperature: -25°C ~ +70°C (adapts to extreme industrial conditions)
- EMC Compliance: EN 61000-6-2 (industrial immunity); EN 61000-6-4 (industrial emissions)
3. Application Fields
- Process Control: Chemical/petrochemical plants (carries analog input submodules for pressure/temperature sensors, paired with digital output submodules for valve control)
- Power Generation: Thermal/hydro power plants (mounts submodules for turbine vibration monitoring and generator control signals)
- Manufacturing: Automotive assembly lines (integrates submodules for conveyor sensor inputs and robotic actuator outputs)
- Water Treatment: Wastewater plants (carries submodules for level switch inputs and pump control outputs)
4. Installation & Maintenance
4.1 Installation
- Mount on EN 50022 DIN rail or ABB system rack; reserve 30 mm clearance on both sides for heat dissipation
- Align submodules with carrier slots and push until locked (ensure proper connector engagement); power off system before submodule insertion/removal
- Connect carrier to system bus via dedicated port (follow ABB wiring diagram for polarity)
4.2 Maintenance
- Check status LEDs monthly (green = normal operation; red = bus fault/submodule error)
- Inspect submodule locks quarterly (ensure no loosening due to vibration); clean carrier surface with dry soft brush
- Replace carrier if bus communication fails after submodule replacement and wiring check (indicates internal bus interface damage)
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The structure and details of the product:

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