BDS4A-203H\204A34 Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
The Kollmorgen BDS4A-203H\204A34 is a servo drive in the BDS Industrial Servo Drives series, designed for a maximum operating speed of 7500 RPM and a maximum output voltage of 230 VAC. It delivers a continuous current of 3.0 Arms per phase, with a peak current of 6.0 Arms per phase for up to 2 seconds and a continuous output of 1.1 kVA at 330 VDC. This drive features a 12-bit R/d resolution and a speed regulation of 0.075 percent per degree Celsius.
Internal Product Review
The BDS4A-203H\204A34 is a Kollmorgen industrial servo drive with 3.0 Arms/phase continuous current and 1.1 kVA continuous output. A 6.0 Arms/phase peak current for 2 seconds and 2.2 kVA peak output support strong short-term acceleration capacity. Speed regulation of 0.075%/°C stands out as a key advantage for precise servo performance.
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Product Description:
The BDS4A-203H\204A34 is a Kollmorgen servo drive from the BDS Industrial Servo Drives series that interfaces between a machine controller and a brushless motor. By switching a DC bus into three-phase output, it supplies regulated power so automated axes can accelerate, hold speed, and position loads using resolver feedback. Heat produced during power conversion is limited to 40 W and is removed through the mounting plate.
Under steady-state load, the drive delivers a continuous phase current of 3.0 A rms per phase, which corresponds to a thermal rating of 1.1 kVA when the bus is held at 330 V DC. The internal bus can rise to 360 V DC and must remain above 250 V DC for full output; within this range, the inverter generates up to 230 V AC line-to-line. The mounting surface must provide an adequate path for conducting heat away from the drive during sustained operation. Maximum closed-loop speed is 7500 rpm, controlled by a pulse-width modulation carrier that switches at 10.0 kHz. Ripple on the bus is attenuated at 20.0 kHz, protecting the output waveform from modulation artifacts. Continuous speed tracking is supported by a resolver excited at 7.0 kHz. Its 12-bit resolver-to-digital converter measures the mechanical angle used for current-vector alignment.
For short bursts, the current rises to 6.0 A rms per phase and the apparent power increases to 2.2 kVA, allowing rapid indexing or disturbance rejection without exceeding the two-second peak limit. Position fidelity is maintained by a maximum converter error of 22 arcmin, while velocity drift is held to 0.075%/°C throughout the operating range. The control loop recognizes target changes up to the 8000 rpm tracking rate, and the resolver signal continues to support feedback during high-frequency pulse-width modulation updates.
