Product Description:

The BDS4A-206J-0001206B21P is a Kollmorgen servo drive from the BDS Industrial Servo Drives series. It converts the fixed DC link of a machine’s power supply into controlled three-phase AC that feeds brushless motors, allowing precise velocity and position management in packaging machines, electronic assembly cells, and similar industrial automation applications. By shaping motor current with high-frequency pulse-width modulation, the unit acts as the intermediary between a motion controller’s low-level commands and the electromagnetic torque produced at the motor shaft.

The drive delivers a continuous output current of 6.0 A RMS per phase, supplying motors with a steady thermal load under rated duty. Continuous output power reaches 2.2 kVA at 330 VDC, allowing connected loads to operate without exceeding the unit’s thermal limits. A pulse-width modulation switching speed of 10 kHz limits audible noise and improves current-loop resolution while keeping transistor losses manageable. The current form factor is constrained to ≤ 1.01, meaning ripple content remains low enough to prevent excessive motor heating or torque ripple during constant-speed operation.

For transient moves, the amplifier supplies a peak output current of 12.0 A RMS per phase and peak power of 4.4 kVA at 330 VDC for up to two seconds, providing additional capacity for acceleration or disturbance rejection. The main DC bus operates from 250 VDC to 360 VDC, allowing the unit to tolerate moderate line variations without tripping. Internal heat dissipation reaches 65 W when the drive operates at rated load, and cabinet cooling must accommodate this heat output. The current ripple frequency is 20 kHz, which affects the selection of associated filtering components. Resolver excitation operates at 7 kHz to provide rotor feedback for closed-loop motor control. Speed regulation changes by 0.075% per °C, while resolver-to-digital conversion accuracy remains within 8 arcminutes.