BDS4A-203J-WO Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
The Kollmorgen BDS4A-203J-WO is a servo drive from the BDS Industrial Servo Drives series with a continuous current of 3.0 Amps RMS per phase and a peak current of 6.0 Amps RMS per phase. It offers a nominal output voltage of 230 VAC and continuous power of 1.1 kVA. The drive measures 340 mm in height, 280 mm in depth, and weighs 2.95 kg.
Internal Product Review
The BDS4A-203J-WO is a Kollmorgen industrial servo drive with 230 VAC nominal output and 1.1 kVA continuous power. Continuous delivery at 3.0 A RMS/phase and peak current of 6.0 A RMS/phase support stable acceleration and dependable load response. A 10.0 kHz PWM frequency with 40 W heat dissipation makes this unit a well-balanced choice for efficient servo control.
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Product Description:
The BDS4A-203J-WO is a digital servo drive manufactured by Kollmorgen for the BDS Industrial Servo Drives series. It converts fixed-frequency mains power into regulated three-phase output so that brushless servomotors can operate with closed-loop current, velocity, or position control. In automated assembly cells, material-handling stations, or light machine tools, the drive supplies the commanded torque while monitoring thermal limits, bus voltage, and feedback integrity.
During steady operation, the drive delivers 3.0 A RMS per phase, supporting continuous work cycles with an apparent power of 1.1 kVA. For rapid acceleration or short overloads, it supplies a peak current of 6.0 A RMS per phase, and its power section can momentarily reach 2.2 kVA without losing regulation. The drive operates from a nominal 230 VAC supply, which feeds its internal DC link. Pulse-width modulation occurs at 10.0 kHz, while commutation ripple is filtered at 20 kHz to minimize torque pulsation. Speed error drifts by only 0.075% per degree Celsius, keeping velocity repeatable across typical cabinet temperature changes. Internal control loops use motor resolver feedback to help the axis maintain contour accuracy.
The housing is 60 mm wide, 340 mm high, and 280 mm deep, while its mass is only 2.95 kg. Cabinet airflow must remove 40 W of waste heat produced by switching losses. A form factor not exceeding 1.01 keeps harmonic distortion within the limits of the drive and power supply. Position-loop conversion accuracy is held to ±4.0 arc min by the integrated resolver-to-digital processor, which excites the transducer at 7 kHz. The drive has a rectangular profile, drilled mounting flanges, and symmetrical weight distribution. These features simplify installation alongside other motion modules when panel space is limited.
