Product Description:

The TDM 1.2-30-300-W0 servo drive module is produced by Bosch Rexroth Indramat within the TDM Servo Drive Modules series. Designed for industrial automation, the unit converts link-circuit energy into regulated three-phase output so a matched servomotor follows velocity and torque commands from a higher-level controller. By managing both steady-state and transient current, the module forms the power stage of a closed-loop axis where precise positioning and speed control are required. It installs in multi-axis racks common to CNC machines and material-handling systems.

During sustained operation, the drive supplies a continuous phase current of 25 A, enough for servomotors up to 9 kW. That current is drawn from a link circuit at 300 VDC, so DC bus monitoring is needed when several modules share one supply. Command scaling uses a current set-point factor of 0.050 V/A, so a 1 V control signal represents 20 A at the motor terminals. For short acceleration bursts, the unit reaches a peak current of 30 A while staying below its thermal limits. The drive does not regulate below a minimum current of 15 A. Insulation category C sets the internal clearances, and the IP10 housing is intended for cabinet mounting. Logic sections draw 60 mA from -15 V and 140 mA from +15 V rails. Operation is rated up to 1000 m above sea level without derating.

Thermal management relies on natural convection, so cabinet airflow must let warm air rise through the heat sink without obstruction. At maximum load, the electronics dissipate 160 W, which limits ambient temperature to 55 °C when the module is mounted vertically with clearance. The aluminum chassis weighs 9 kg, providing enough mass to help moderate temperature swings during operation. Vertical mounting also supports a clear upward airflow path through the heat sink in enclosed cabinets.