Product Description:

The 1070084647-GA1 is a drive module produced by Bosch Rexroth Indramat within the DM Servo Drives series. This unit is a servo drive designed to regulate current and voltage delivered to synchronous and induction motors in automated machinery. It communicates with a master controller through the deterministic SERCOS optical ring, allowing coordinated axis control in packaging lines, printing presses, and handling systems. This arrangement lets the module serve as the control link between the machine command system and the motor, supporting accurate speed changes and repeatable positioning during frequent starts and stops. With a compact 50 mm module width and a mass of 6.0 kg, the drive fits densely populated cabinets while a 400 VAC three-phase output bus connects directly to downstream inverters.

The power stage is energized from a DC link rated at 670 V DC, and it draws 2.5 A from that bus during normal operation. Internally, the drive chops this rail at an 8 kHz switching frequency, a rate that balances motor acoustic noise with semiconductor losses. Under this pulse pattern, the continuous phase current delivered to the motor is 2.5 Arms, while momentary load changes are supported with 2.4 A of line-to-line output current on the three-phase side. Control electronics are supplied separately at 24 V where the consumption is 0.89 A, and thermal design limits total dissipation to 96.5 W so cabinet airflow can be sized accurately. A standard incremental encoder interface returns position data to the SERCOS master and supports closed-loop motor control during changing load conditions.

For short accelerations, the current loop can rise to 4.7 Arms. Position feedback is processed on three internal measurement paths: the resolver converter captures rotor angle with 12 bits, the stage controller refines that data to 20 bits, and the motion-task generator carries computations at 32 bits. These numeric depths support smooth velocity profiles and consistent motion control across demanding axis movements. Protection systems track the heat generated by peak currents and inhibit pulses once the calculated power-loss threshold is reached, helping protect the motor and drive during repeated high-load operation.