SP10600-402B2 by Kollmorgen

The SP10600-402B2 is a digital servo drive produced by Kollmorgen within the SP Servostar Servo Drives series. Designed to energize synchronous servo motors, the unit converts DC bus power into three-phase currents that track motion commands from a PLC or motion controller. By modulating current with high-frequency pulse-width modulation, the drive closes the torque loop directly at the machine axis, giving automated packaging lines, pick-and-place gantries, and similar equipment tightly regulated speed, position, and acceleration.

It delivers a continuous phase output of 6 A RMS per phase, allowing medium-frame motors to maintain rated torque without overheating. For short bursts, the current ceiling rises to 12 A for two seconds, providing extra acceleration when a load changes rapidly. Command signals can be issued as ±10 V analog references and are interpreted through an input gain of 1.70 A/V, so each volt adds approximately 1.7 A to the phase setpoint. The resulting stator current is monitored by a feedback circuit scaled at 2.12 A/V, enabling the controller to match commanded and measured values accurately. All switching is performed at a carrier frequency of 16 kHz, which helps reduce audible motor noise while improving current-control bandwidth.

Protective limits are embedded in the drive's control system. The drive opens its power stage if the DC link exceeds 430 VDC or if the supply voltage falls below 90 VDC, helping prevent insulation stress and component arcing during power disturbances. Thermal monitoring trips at 118 °C to protect the semiconductors from excessive heat. During normal operation, the control electronics dissipate 84 W, a value that can be used when calculating panel ventilation requirements. An internal 8 V logic rail with a 0.2 A current draw keeps the microprocessor and gate drivers active even when the motor is at a standstill. This logic supply supports controlled operation when the power stage is not delivering current to the motor.