Product Description:

The BDS4A-203J-0001\202B21P servo drive is manufactured by Kollmorgen within the BDS Industrial Servo Drives series. Designed for panel-mounted installation, the unit converts a stabilized DC link into three-phase power for brushless motors used in automated machinery. It supports resolver or differential quadrature encoder feedback so a motion controller can close high-bandwidth position loops. By combining current, velocity, and position regulation in one module, the drive maintains precise torque and speed profiles for packaging lines, pick-and-place axes, and light assembly stations.

The continuous phase current is 3.0 A RMS per phase, allowing sustained motor excitation without thermal derating, while the steady apparent power limit of 2.2 kVA at 330 VDC sets the maximum continuous load applied to the plant’s DC bus. The DC-link voltage may rise to 360 VDC, yet operation remains stable down to 250 VDC, providing headroom for supply fluctuations. On the output side, phase-to-phase voltage is limited to 230 VAC to protect motor insulation. Switching is performed at 10.0 kHz, a carrier frequency that balances acoustic noise against switching loss and contributes to the drive’s 40 W of internal heat dissipation. Position data is retransmitted through a 40 mA differential driver that switches between +5 V and common, and marker pulses are included for precise homing.

During acceleration, the amplifier supplies 6.0 A RMS for two seconds and can deliver 4.4 kVA to the motor during the same interval. The commanded waveform produces a motor ripple frequency centered on 20.0 kHz ±10%, while resolver excitation is fixed at 7.0 kHz and supports a radial-diametral accuracy of 8 arc-minutes. Speed drift is limited to 0.075% per °C, supporting repeatable throughput as temperature changes. Additional I/O, including encoder outputs and the +5 V logic level, allows external counters or PLCs to capture motion events without extra interface hardware.