ETEL DSO‑RAC601‑029 Controller Rack

The ETEL DSO‑RAC601‑029 is a modular controller rack designed to host multiple ETEL motion controllers, servo amplifiers, and auxiliary modules in a single, compact chassis. It provides a standardized mechanical and electrical infrastructure for building scalable motion control systems, simplifying cabinet layout and reducing wiring complexity. The rack is intended for use in industrial automation applications requiring multi‑axis control, such as CNC machines, robotic cells, and packaging lines.

The rack features a robust steel construction with a built‑in backplane that distributes power and communication signals to all installed modules. It includes a hot‑swap power supply unit (PSU) that converts AC mains (120/230 VAC) to the necessary DC voltages (24 VDC for logic, 48‑300 VDC for motor power). Integrated cooling fans ensure adequate airflow for heat dissipation, allowing continuous operation at full load.

This model, DSO‑RAC601‑029, provides 6 slots for modules (expandable with additional racks) and is equipped with a rear connector for high‑speed communication between modules (EtherCAT or CANopen). The rack includes status LEDs for power, communication, and fault conditions. It also offers grounding terminals and EMI shielding to comply with industrial EMC standards.

Technical Specifications

Number of slots: 6 (for standard ETEL DSB or DSMAX modules). Power supply: 120/230 VAC (switchable), 50/60 Hz, output: 24 VDC/10 A (logic), 300 VDC/20 A (motor). Cooling: forced air (two fans). Communication backplane: EtherCAT (CoE) or CANopen (selectable). Dimensions: 19" rack mount, 3U height, 450 mm depth. Operating temperature: 0°C to +45°C. Protection: over‑voltage, over‑current, over‑temperature. Weight: 12 kg.

The rack includes a front panel with a power switch, fuses, and status indicators. It is designed for installation in a standard 19‑inch cabinet with adequate ventilation clearance. The backplane supports hot‑swappable modules, allowing replacement without power‑down (when supported by modules).

Applications and Benefits

This controller rack is ideal for systems requiring centralized control of multiple servo axes, providing a clean and organized cabling infrastructure. It reduces installation time and simplifies maintenance, as modules can be easily inserted and removed. The integrated power supply and cooling ensure reliable operation, while the backplane communication reduces the number of external cables.

The rack is compatible with a wide range of ETEL modules, including position controllers, servo amplifiers, and I/O expansion cards. It can be used in both new machine designs and as a retrofit upgrade for existing equipment.

Installation and Commissioning

Mount the rack in a 19‑inch cabinet using the supplied brackets. Ensure proper grounding and connection to the AC supply. Insert the modules into the slots, ensuring they are firmly seated. Connect the external communication cables and motor/feedback cables to the front connectors of the modules. Power up the system and verify the communication between modules using the configuration software.

Regular maintenance includes cleaning the air filters and checking fan operation. The rack’s modular design simplifies troubleshooting by isolating faults to individual modules.

Reliability and Support

ETEL’s controller racks are built to industrial standards, with rigorous testing for mechanical stability, temperature rise, and EMC. They are backed by ETEL’s global support and spare part availability.

Conclusion

The ETEL DSO‑RAC601‑029 controller rack offers a practical, modular solution for housing motion control components, enhancing system organization and reliability. It is an essential building block for scalable automation systems.