Product Description:

The TDM 4.1-030-300-W1/S102 servo drive module is produced by Bosch Rexroth Indramat for the TDM Servo Drive Modules series. Within an automation cell, this module sits between the mains supply and a matched servo motor, modulating current and voltage so the axis follows commanded velocity and torque profiles. It also supplies auxiliary measurement voltages for feedback devices and diagnostic circuits, integrating control and protection functions in a compact 8 kg frame that fits standard control cabinets. By regulating the electrical output to the motor, it supports stable axis motion during acceleration, steady running, and controlled deceleration in automated equipment.

During continuous operation, the drive can deliver 25 A of output current, which is the maximum root-mean-square winding current the connected motor may draw without thermal derating. That current supports a sustained mechanical power capability of 9 kW, providing a fixed basis for sizing loads such as linear actuators or rotary tables. This output level suits medium-duty servo axes that need continuous torque without pushing the power stage beyond its thermal range. Internally, the control logic and sensor circuits are powered by a dedicated +15 V rail that requires 150 mA, while the complementary −15 V rail draws 60 mA; these low-level supplies feed resolver excitation, current sensors, and analog signal conditioning. When the module is fully loaded, it dissipates 175 W of heat, which must be removed to keep semiconductor junction temperatures within safe limits.

To remove this heat, a cooling assembly comprising one fan unit must be installed directly on the module’s top panel so airflow passes across the heat sink. Proper airflow at the top of the unit helps prevent heat buildup inside the cabinet and supports consistent current delivery during extended operation. The housing has an IP 10 protection rating, which means it is finger-safe but relies on a closed cabinet for dust protection. Reliable performance is permitted at ambient temperatures up to 55 °C. The module can be mounted at altitudes up to 1000 m, and operation above that height may require derating or additional cooling.