Product Description:

The TDM 3.2-020-300 servo drive module is produced by Bosch Rexroth Indramat as part of the TDM Servo Drive Modules series. It serves as the power stage between a regulated DC bus and an Indramat servo motor, delivering controlled phase currents so that industrial axes can follow velocity or torque commands with the accuracy required for packaging lines, printing machines, and material-handling stations. This arrangement lets the drive respond quickly to load changes during positioning and speed-control tasks.

Its continuous output current is 15 A, which is the maximum motor current the module can supply continuously without exceeding thermal limits. At this current, the drive can deliver up to 6 kW of mechanical power to the connected motor. Both the current actual and setpoint circuits share a sensitivity of 0.375 V/A, which simplifies tuning because one volt of command or feedback corresponds to the same current increment. The internal DC bus must remain within 300 VDC ±15% so the PWM stage can maintain linear modulation. For short accelerations or shock loads, the amplifier can furnish a peak of 20 A, allowing brief torque surges without triggering overcurrent trips.

Nominal ratings apply until the surrounding air reaches 55 °C, and derating is required above that point to protect silicon and magnetic components. The minimum adjustable motor current is 1 A, giving motion systems a finely controlled lower limit for light-load axes. Installations are permitted up to 1000 m above sea level, where reduced cooling air density must be taken into account. At continuous load, the power electronics dissipate 110 W, and this heat is removed by natural convection across the finned housing. The unit has an IP10 enclosure, a mass of 8 kg, and no forced-air fans, so it is suited for cabinet installation where simple passive cooling is preferred.