BDS4A-240J-WO Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
The Kollmorgen BDS4A-240J-WO is part of the BDS Industrial Servo Drives series and provides a continuous output current of 40 Amps RMS per phase with a continuous output power of 14.5 kVA. This drive features a peak output current of 80 Amps RMS per phase and operates with a maximum output voltage of 230 VAC. It measures 340 mm in height, 140 mm in width, 284 mm in depth, and weighs 9.98 kilograms.
Internal Product Review
The BDS4A-240J-WO is a Kollmorgen industrial servo drive delivering 14.5 kVA continuous output power and 40 A RMS/phase continuous output current. A 10.0 kHz PWM switching frequency and 0.075%/°C speed regulation support smooth, stable motion control in demanding axes. Peak output current of 80 A RMS/phase stands out as a key performance advantage.
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Product Description:
The BDS4A-240J-WO is a servo drive produced by Kollmorgen for the BDS Industrial Servo Drives series. It delivers closed-loop control to brushless motors in automated machinery such as packaging stations and material-handling axes. The drive converts direct-current energy from a shared bus into three-phase AC that governs motor speed and torque.
This drive supplies a continuous phase current of 40 A RMS per phase, giving machines the steady torque needed for constant-load processes, while its peak capability rises to 80 A RMS per phase for short acceleration bursts. The terminal voltage reaches 230 VAC, matching most medium-voltage servomotors without external transformers. The inverter can sustain 14.5 kVA of output power during normal duty and tolerates momentary surges up to 29 kVA when rapid indexing is required. Thermal modeling shows 335 W of internal heat dissipation at rated load, so cabinet ventilation must extract that heat. The housing measures 140 mm wide, 284 mm deep, and 340 mm high, allowing the unit to fit vertically in standard 600 mm enclosures. Its mass of 9.98 kg permits manageable installation. Resolver feedback is supported with a maximum accuracy of 8 arc-minutes and an excitation frequency of 7.0 kHz for precise rotor position tracking.
The DC link that feeds the power stage operates between 250 VDC and 360 VDC; remaining within this range prevents undervoltage trips and overvoltage stress on the bus capacitors. A carrier modulation rate of 10.0 kHz minimizes audible noise while maintaining fine current resolution. Speed drift is limited to 0.075% per °C, helping retain process consistency during typical control-cabinet temperature changes. The enclosure proportions leave room for additional filter hardware, while the resolver interface eliminates the need for incremental encoders in applications that use resolver-based position feedback.
