0090-A7151 Kollmorgen
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The Kollmorgen 0090-A7151 is part of the PD Servostar Servo Drives series and has a rated output power of 120 watts with a continuous output current of 5 Arms. This servo drive measures 139 mm wide, 115.3 mm high, and 51.4 mm deep, with a weight of 0.55 kilograms. It features a nominal bus voltage of 24 VDC and an overvoltage trip threshold of 56 VDC.
Internal Product Review
The 0090-A7151 is a PD Servostar servo drive with 120 W rated output power and 5 Arms continuous output current. A 10 Arms peak output current and 16 kHz PWM frequency support crisp motor response and stable control in low-voltage motion applications. Strong protection with a 56 VDC overvoltage trip and 80 °C overtemperature trip makes this drive a dependable servo solution.
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Product Description:
The 0090-A7151 is a compact DC-bus servo amplifier manufactured by Kollmorgen for the PD Servostar Servo Drives series. It regulates torque and velocity for low-voltage brushless or brushed motors in automated tooling, pick-and-place axes, and small conveyors. By translating motion commands into modulated current, the unit forms the link between a motion controller and a 24-volt bus, giving machines closed-loop positioning without adding bulk to the control cabinet.
During continuous operation, the drive supplies 5 A RMS to the motor, and it can deliver a momentary peak of 10 A RMS to overcome acceleration loads. Those current limits are controlled by a pulse-width modulation stage that switches at 16 kHz, which helps keep audible noise low and reduce torque ripple. Electrical energy from the DC rail is converted into controlled motor power with a rated output of 120 W, while the input section draws 128 W at full load. A charge time of 0.25 seconds lets the internal capacitors reach their working voltage rapidly after power-on, so the axis can be enabled with minimal delay. The logic domain requires only 0.6 A, keeping demand on auxiliary supplies low. Physical clearance remains modest with a depth of 51.4 mm and a height of 115.3 mm, so multiple amplifiers can fit side by side on a DIN rail.
The DC link has a nominal bus voltage of 24 VDC; protective circuits disconnect the output stage if the voltage rises to 56 VDC or falls below 16 VDC. An overtemperature cutoff at 80 °C helps protect the semiconductors when airflow is insufficient. For rapid deceleration events, the design tolerates a surge current of 30 A without latching a fault. The installed mass is only 0.55 kg, easing panel installation and allowing the 139 mm-wide unit to mount in lightweight enclosures. The amplifier can be paired with small frameless motors or gearmotors in battery-powered or auxiliary equipment.
