Product Description:

The KSD041C-0420-NN-S1-1G0-NNNN is an integrated servo motor-drive unit manufactured by Bosch Rexroth Indramat within the KSD IndraDrive Mi Motors series. By combining power electronics, feedback, and a synchronous motor in one housing, it enables decentralized axis control for conveyors, pick-and-place modules, and other distributed automation cells. The device receives DC bus power through the IndraDrive Mi hybrid cable and converts controller commands into precise shaft motion, reducing cabinet space while simplifying wiring in industrial machinery.

An optical single-turn encoder with a resolution of 128 × 2¹³ positions per revolution is mounted on the rotor, allowing the drive to detect angular changes down to sub-arcminute increments and close the control loop internally for accurate interpolation. This precise feedback supports contouring tasks on multi-axis gantries. When the shaft is locked, the windings draw a standstill current of 1.5 A to generate a holding torque of 2.2 Nm. The torque constant of 1.60 Nm/A provides predictable torque throughout the motor’s linear operating range. Thermal saturation is delayed by a winding thermal time constant of 13 min, allowing brief overloads without immediate temperature alarms during indexing duties.

Dynamic performance is supported by the low rotor inertia of 0.00017 kg·m², so acceleration to the required speed demands only modest drive effort. During rapid moves, the electronics can supply up to 6.8 A, producing a peak shaft torque of 9.4 Nm before current limiting engages. The back electromotive force rises at 98.2 V/1000 rpm, supporting operation with the shared DC bus used by the IndraDrive Mi platform. This shared bus can recirculate energy between connected axes during acceleration and deceleration. A sealed housing with a protection rating of IP65 guards the encoder and power stage, so the unit may be mounted on moving machine parts without a separate enclosure.