Description
SDCS-CON4-COAT: Product Overview
The module serves as the control core within ABB SDCS DC drive systems, positioned between the supervisory control layer (PLC/DCS) and the power conversion section (thyristor rectifier). Its role is to execute motion commands by processing analog setpoints and digital inputs, reading feedback from motor encoders, and generating precisely timed firing pulses for the rectifier thyristors. It manages signals for speed/torque regulation, ramp generation, and coordination with other drives in multi-motor applications.
Core functionality includes executing cascaded control loops (speed and current), performing signal conditioning for various transducer types, and implementing protective functions such as overcurrent, overvoltage, and overtemperature shutdown. The module interfaces with plant-level networks via integrated communication ports.
It belongs to the ABB SDCS series, a platform designed for heavy-duty industrial drives. The platform offers modularity, allowing users to scale power and functionality by combining different control and rectifier modules. Benefits include proven reliability in demanding applications, comprehensive diagnostic capabilities accessible through the human-machine interface, and compatibility with ABB’s broader automation ecosystem for streamlined integration.
ABB SDCS-CON4-COAT
SDCS-CON4-COAT: Technical Specifications
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Model Number: SDCS-CON4-COAT
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Manufacturer: ABB Ltd.
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Product Type: DC Drive Control Module
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Input Voltage: 380–480V AC (3-phase, ±10%)
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Output Voltage: 0–500V DC (adjustable)
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Output Current: 0–1000A (continuous); 1500A (peak, 10s)
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Communication Protocols: PROFIBUS DP V1, Modbus RTU (RS-485)
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Protection Rating: IP54 (housing with epoxy coating)
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Operating Temperature: -20°C to +60°C
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Coating: Epoxy resin (anti-corrosion, anti-dust)
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Speed Accuracy: ±0.1% of rated speed
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Torque Accuracy: ±1% of rated torque
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Dimensions: 300mm (H) x 200mm (W) x 150mm (D)
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Weight: ~8kg
Core Features & Customer Value
The precision control algorithms implemented in the module enable speed regulation within ±0.1% of the setpoint. For the engineer, this translates to consistent process outcomes, such as maintaining uniform strip thickness on a steel mill finishing train, where minor deviations can lead to material waste. The torque regulation accuracy of ±1% ensures predictable force application in applications like crane hoisting, enhancing operational safety and control.
The epoxy anti-corrosion coating provides a robust barrier against moisture, dust, and chemical exposure, resulting in an IP54 protection rating. For the end user, this enhances reliability and extends service life in harsh environments like mining operations or coastal chemical plants, reducing the frequency of maintenance interventions and associated downtime. The rugged construction minimizes the risk of failure due to environmental factors.
Integration flexibility is provided through support for PROFIBUS DP and Modbus RTU protocols. This allows engineers to connect the module to a wide range of PLC and DCS platforms without requiring protocol converters. The module’s design follows the SDCS series philosophy of modularity, permitting scalability by pairing with compatible rectifier modules to match the required power rating for the application.
ABB SDCS-CON4-COAT
Typical Applications
In steel production, the module is employed to control the main drive motors of hot or cold rolling mills. Here, it regulates roller speed with high precision to achieve the desired strip gauge and surface finish. The coating is critical in these environments due to the presence of scale dust and humidity.
For mining applications, it is used to drive hoists, crushers, and conveyor belts. In these scenarios, the module manages heavy inertial loads and provides smooth starting and stopping sequences. The robust enclosure protects against the abrasive dust and vibration typical of underground or open-pit mines.
In port logistics, the module controls the drives of container cranes and ship-to-shore gantry systems. It manages the high torque required for lifting containers and ensures precise positioning of the spreader. The ability to withstand salt-laden air is a key advantage in these maritime environments.
