SR55200-000000 Kollmorgen
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The Kollmorgen SR55200-000000 is part of the SP Servostar Servo Drives series and delivers a continuous current of 55 Arms per phase with a continuous power output of 20.0 kW. It includes a resolver feedback system, operates at a maximum temperature of 45 °C, and features peak current capability of 110 Arms per phase for 2 seconds. The drive has a pulse width modulation frequency of 8 kHz and an internal dissipation rate of 465 W.
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Product Description:
The SR55200-000000 is a digital servo drive manufactured by Kollmorgen for the SP Servostar Servo Drives series. The device regulates three-phase motor currents from a shared DC bus and uses resolver feedback to synchronize its output waveforms with the rotor position. This control structure allows automation systems to command precise torque and speed profiles on packaging lines, pick-and-place modules, and gantry axes where rapid dynamic response and consistent positioning are required. The resolver signals provide the controller with continuous rotor-angle data, allowing accurate commutation as the motor accelerates, decelerates, or operates under changing loads.
For continuous operation, the power section delivers a phase current of 55 Arms/phase, enabling the drive to support medium-frame servomotors while maintaining manageable bus loading. Its thermal design permits a sustained power output of 20.0 kW, supporting high-duty production machinery that runs without extended pauses. Short overloads are handled by a peak phase current of 110 Arms/phase for two seconds, providing additional acceleration torque during index cycles. The output stages operate at a carrier frequency of 8 kHz. Internal current reconstruction limits the residual current ripple to 16 kHz, a frequency that minimizes audible noise and reduces motor heating. These current and power capabilities allow the drive to regulate demanding motion cycles while protecting the power stage from prolonged overload conditions.
Switching and conduction losses produce 465 W of internal heat dissipation, so the enclosure must provide sufficient airflow or heat sinking to keep the chassis temperature below the 90 °C overtemperature trip point. Bus surge protection is set to 430 VDC, and the controller disables its gate signals if regenerated energy pushes the DC link beyond this threshold. The maximum permitted ambient temperature is 45 °C, while noncondensing humidity can reach 90% RH. Additional safeguards disconnect the unit if the DC bus falls below 125 VDC during operation or remains under 255 VDC at startup. These protective actions prevent incorrect motor commutation during brownouts and other low-voltage conditions.
