Product Description:

The PRD-P320260z-C2 is a digital servo amplifier built by Kollmorgen for the SP Servostar Servo Drives series. As a drive, it supplies controlled three-phase power to brushless servomotors, closing torque and velocity loops for pick-and-place stations, packaging equipment, and other precision automation. By converting incoming AC power to a regulated DC bus and high-frequency PWM outputs, the unit serves as the interface between motion controllers and mechanical axes, supporting fast response and repeatable positioning in multi-axis systems.

Its AC input accepts 190–230 VAC, three-phase power, a range that matches low-voltage industrial mains and provides balanced power to the rectifier. Internally, the bus is maintained between 270–320 VDC, giving the inverter sufficient headroom for motors with high back electromotive force. The drive delivers a continuous phase current of 20 A RMS per phase and can surge to 40 A RMS per phase for up to 2 seconds to handle acceleration peaks. Command signals reach the unit through a Mini-D 36-pin connector, and motion data is transferred through a PMAC-2 Direct PWM interface. Phase currents are monitored through serial digital U and V feedback channels. Dead-time protection is handled internally, fault codes appear on a seven-segment display, and the power stage is fully isolated from the control electronics. An external 24 VDC logic supply keeps the control circuits active during mains interruptions.

The amplifier operates at ambient temperatures from 0 to 45 °C. Integrated protection functions include overvoltage, undervoltage, overtemperature, short-circuit, frequency, and cross-fire protection, which shut down the output before electrical or thermal stress damages internal components. For dynamic braking, an optional ERH-26 resistor can be connected to the bus so excess kinetic energy is dissipated electrically instead of causing excessive bus voltage. This braking arrangement is useful when rapid deceleration returns substantial energy from the motor to the amplifier. During storage or shipment, the electronics tolerate ambient temperatures from -20 to 70 °C, allowing the unit to remain in unconditioned warehouses without temperature-related damage. Appropriate protection from moisture, condensation, and contaminants is still required while the amplifier is not installed.