DSC 3.1-150-220V

The DSC 3.1-150-220V is a servo amplifier produced by Bosch Rexroth Indramat for the DSC Servo Amplifiers series. In an automation cell, this unit modulates DC bus energy into precisely regulated phase currents that drive synchronous or induction servomotors, allowing axis controllers to command speed, torque, and position without mechanical contactors. Its design connects a 220 VAC three-phase mains supply to the machine’s motion system, providing the fast current transitions required for pick-and-place gantries, metal-cutting heads, and packaging actuators.

The power section is built around a 300 VDC internal bus that stores energy in capacitors so the output stage can respond quickly to load changes. The unit accepts a 220 VAC three-phase supply, allowing direct connection to compatible plant distribution panels without an isolation transformer. Continuous output reaches a nominal 75 A, which is the steady-state current that the amplifier can supply while remaining within its thermal limits. For acceleration or sudden loads, the device permits a peak output of 130 A, helping servomotors overcome inertia without stalling during startup. Dynamic mechanical work is supported by a transient output power ceiling of 39 kW, accommodating demanding motion profiles while remaining within semiconductor and bus-voltage limits.

The amplifier manages regenerated energy through an integrated bleeder network that dissipates an average of 500 W during routine deceleration and can absorb up to 20 kW during brief braking events, protecting the DC link from overvoltage trips. Cabinet cooling must account for approximately 510 W of external heat dissipation, so forced airflow should pass near the unit’s heat sink while maintaining the required clearances. The 630 mm × 306 mm × 372 mm frame requires adequate mounting space, and its 26 kg mass should be considered when the drive is installed on swing-out panels or slide rails.