Product Description:

The CR06250 drive is manufactured by Kollmorgen for the CD Servostar CD Drives series. It belongs to the Compact Drive product family and serves as a panel-mount controller that converts incoming power into regulated three-phase motor current while monitoring resolver feedback. By closing the torque, speed, and position loops internally, the unit delivers precise motion control for servo actuators in automated assembly, packaging, and material-handling equipment. This arrangement lets the drive handle current regulation and feedback processing in one compact housing at the axis.

The drive operates from a nominal input of 230 VAC (325 VDC) and supplies a continuous phase current of 6 A with a transient capability of 18 A RMS. A switching stage that runs at 8 kHz PWM minimizes ripple, and the current loop can be tuned up to <2400 Hz so dynamic torque builds quickly during acceleration and correction events. Protection is assisted by a 15 A line fuse, an 80 °C overtemperature limit, and a 90 VDC undervoltage cutoff. Resolver excitation is 4.25 VAC, and the 0.47 transformation ratio matches standard two-pole transducers for accurate rotor-angle processing. Standard hardware also includes a 230 V logic input for enable commands, and an overtemperature trip disconnects the output stages before excessive thermal stress develops.

The position algorithm refreshes every 500 µs, supporting fine incremental moves and short command intervals. The velocity loop maintains only 0.01% drift over load and temperature changes, which helps keep speed stable during varying operating conditions. DC bus monitoring triggers at 430 VDC to prevent component overstress, while the chassis weighs 2.22 kg and is easier to place in cabinets with limited rail capacity. The resolver filter is arranged so switching noise does not corrupt the angle signal during operation.