Product Description:

The 1070084662-108 belongs to the DM Servo Drives series from Bosch Rexroth Indramat. This module is a servo inverter that receives digital motion commands and feedback, regulates a DC link, and outputs controlled three-phase power to synchronous or induction motors in automated lines, gantries, and packaging equipment. Within a multi-axis rack, it communicates through a SERCOS fiber link so the master controller can issue precise torque or velocity setpoints and monitor status in real time.

During operation, the control electronics draw 0.89 A from an external 24 V auxiliary supply to keep the logic, gate drivers, and sensor circuits active even when the main bus is off. The power stage can supply a peak phase current of 15 A(rms) in open-loop mode at the nominal 8 kHz switching rate, while its continuous closed-loop limit is 7.4 A(rms). These currents are delivered on a three-phase output of 400 V, and the inverter can modulate that voltage up to 800 Hz so high-speed spindles or linear motors can run without mechanical gearing. This combination suits compact machines and still supports dynamic axes that require short acceleration times and responsive speed changes.

The intermediate circuit connects to an unregulated bus of 715 VDC, and the drive regulates it down to 670 VDC; this separation helps prevent overvoltage events from feeding back into the supply. At full load the unit dissipates 121 W, and panel cooling should keep the internal temperature rise within limits because current capacity falls by 0.23 A per kelvin between 45 °C and 55 °C. Motion precision is supported by a mounting encoder interface with 32-bit position resolution, stage feedback processed at 20 bits, and an analog resolver channel resolved to 12 bits. The housing is only 50 mm wide and the total mass is 6.0 kg, allowing dense side-by-side installation without excessive cabinet weight.