KSM02.1B-071C-35N-S1-HG2-ET-SD-D7-NN-FW by Bosch Rexroth Indramat

The KSM02.1B-071C-35N-S1-HG2-ET-SD-D7-NN-FW is a motor-integrated servo drive manufactured by Bosch Rexroth Indramat for the KSM Motor Integrated Servo Drives series. The unit combines a permanent-magnet servomotor, power electronics, and a fieldbus interface in one housing so that machine builders can mount a complete axis with minimal cabinet wiring. It is intended for positioning or speed-controlled tasks on packaging machines, handling systems, and light assembly stations where decentralized drives shorten cable runs and simplify installation.

A regulated DC link of DC 750 V powers the drive section, enabling direct connection to high-voltage supply modules in multi-axis systems. Command data passes through a Multi-Ethernet port, which permits selection among several industrial Ethernet protocols without hardware changes. Heat is removed through natural convection, so no fans are required and maintenance intervals remain long. Rotor position feedback arrives through a Hiperface interface, providing absolute angle information that the controller uses for closed-loop commutation. Within that interface, an optical encoder delivers 128 signal periods per revolution, providing sufficient resolution for smooth velocity control at low speeds.

An electrically released brake engages when its coil is not energized and releases at DC 24 V, allowing vertical loads to be held during a power loss. The drive supports Safe Motion (with SBC), allowing safe torque off and monitored stop functions to operate without external relays. The motor uses Rexroth frame code 071, providing a compact flange that mates with planetary gearboxes or direct couplings. Winding code 35 identifies a stator configuration suited to medium bus voltages and moderate continuous current, allowing the axis to deliver rated torque without additional cooling surfaces.