Technical Parameters Parameter Specification / Value Product Type Control & Regulation Unit (CRU) / Main Controller Parent System ABB DCS800 DC Drive System Control Technology Full digital microprocessor-based control for DC motors (separately excited). Core Control Functions • Speed control (with EMF or tacho/encoder feedback) • Armature current (torque) control • Field current control (including field weakening) • Application programming (via Drive AP software) • Comprehensive diagnostics and monitoring Standard Communication Interfaces • DriveBus (high-speed internal serial bus for I/O and option modules) • Service Port (e.g., RS-232/RS-485 for connection to DriveWindow PC tool) Optional Fieldbus Interfaces PROFIBUS DP, DeviceNet, Modbus RTU/TCP, PROFINET, EtherNet/IP (via plug-in FDNA-01/NPCA-01 type communication modules). Configurable Digital I/O Typically 16+ software-configurable channels (exact base number varies; can be expanded with I/O option modules). Configurable Analog I/O Typically 4+ channels (e.g., for speed reference, actual value, torque limit; configurable as voltage ±10V or current 0/4-20mA). Feedback Signal Interfaces • Dedicated encoder/tachogenerator input (differential, for precise speed feedback). • EMF calculation for sensorless speed control. Control Supply Voltage 24 V DC (supplied from the drive's internal NPBA-01 or NPBD-01 Power Supply Module). Firmware Storage Flash memory, updatable via service port. Operating Temperature 0°C to +45°C (for full performance; derating may apply at higher temperatures). Relative Humidity 5 - 95% (non-condensing). Certifications/Standards CE, cULus, compliant with IEC 61800 (adjustable speed drive standards).