Product Description:

The CR03302 drive is manufactured by Kollmorgen and belongs to the CD Servostar CD Drives series. Classified in the Compact Drive product family, it operates as a servo amplifier that closes the current, velocity, and position control loops for brushless motors used in packaging machines, pick-and-place systems, and general automation cells. It translates controller commands into precise phase currents at a rated current of 3 A, while its internal fault relay and grounding provisions support safe machine operation. This operating role makes it suitable for axes that need accurate starts, stops, and speed changes during repetitive motion.

The command interface accepts an analog signal range of ±10 V, allowing direct velocity or torque references from PLCs and motion cards. Inside the unit, a current-loop bandwidth below 2400 Hz is recalculated every 16 kHz, which supports rapid torque response with minimal phase lag. A dry-contact fault relay rated at 1 A at 24 VDC can be wired to a master safety circuit to signal overtemperature, overcurrent, or feedback loss. Resolver feedback, identified here as a Resolver interface, supplies rotor angle so the commutation algorithm can deliver sinusoidal current without position drift. Additional installation and control details include a 2.5 mm² main input wire size, a ground screw torque of 1.35 N·m, and a velocity-loop update rate of 4 kHz.

Higher-level loops run at a position update frequency of 2 kHz. Velocity tuning is supported by a loop bandwidth below 400 Hz, and the power stage can commutate phases at the same upper frequency. Closed-loop speed holds within 0.01% of the command, which is important for processes that cannot tolerate cumulative position error. That behavior helps the amplifier maintain consistent motion during short indexing moves and synchronized machine sequences. Mechanically, M4 mounting threads tightened to 2.26 N·m secure the aluminum housing, and the assembled module weighs 1.61 kg, which helps when cabinet layouts require low-mass drives.