Product Description:

The CR06561-MZ is a servo drive from Kollmorgen included in the CD Servostar CD Drives series. As part of the Compact Drive product family, it regulates current and velocity for brushless servo motors in automated production cells, machine tools, and packaging lines. By converting DC bus energy into pulse-width-modulated phases, the unit provides closed-loop motion control appropriate for medium-power axes within distributed industrial networks.

Communication with higher-level controllers is carried out over the SERCOS optical ring, allowing deterministic command exchange and synchronous motion profiles. Command logic is powered by an external supply of 24 VDC, so parameter retention and fieldbus activity continue during main power isolation. Inside the inverter, the PWM bridge switches at 8 kHz, a frequency that balances acoustic performance with switching losses; these losses account for an internal heat dissipation of 80 W that must be removed by cabinet airflow. During continuous operation, the power stage delivers a rated output current of 6 A, while short acceleration bursts up to 18 Arms for 500 ms support dynamic load changes. A resolver mounted on the motor returns position feedback, closing the current and velocity loops with accuracy.

Protective elements monitor supply and thermal conditions. A maximum surge of 30 A can be tolerated without tripping, but the main line is safeguarded by a 15 A fuse and the soft-start circuit limits inrush by charging the bulk capacitors in 0.25 s. The auxiliary fault relay is rated at 1 A, so status signals can be wired directly to control logic. Overvoltage shutdown occurs at 430 VDC, and the heatsink thermostat opens at 80°C; conversely, an undervoltage threshold of 90 VDC prevents brownout misfiring. Proper convection requires 63.5 mm of free space above and below the housing, and the aluminum chassis weighs 2.22 kg, permitting easy panel mounting while still providing thermal mass for transient loads.