Product Description:

The TDM4.1-020-300-W0 is a servo drive module produced by Bosch Rexroth Indramat for the TDM Servo Drive Modules series. In an automation cabinet, it supplies regulated DC power and current loops to Indramat AC servomotors, allowing closed-loop speed and torque control without external amplifiers. The unit receives a fixed link voltage from the shared supply section, modulates that energy through its output stage, and forms the active interface between the motion controller and the mechanical axis.

The drive’s link circuit operates at 300 VDC, and its output stage can deliver a continuous armature current of 15 A with a matching continuous power capability of 6 kW. For rapid acceleration, it tolerates a peak current of 20 A, after which it must return to the continuous rating to stay within thermal limits. Internal losses are restricted to 110 W; that heat is removed by natural convection, so no forced-air blower is fitted. Control electronics draw 400 mA from the cabinet’s 24 V auxiliary supply, while external sensors can be powered from a dedicated 24 V outlet that provides 50 mA. A 15 V measuring circuit supplies 150 mA to resolver or tachometer feedback devices, allowing accurate current regulation independent of motor speed. The module has humidity class F, indicating that varnished components resist moisture encountered in typical plant environments.

The permissible ambient temperature reaches 55 °C, and reliable operation is specified up to 1000 m mounting altitude without derating. An enclosure rating of IP 10 means the card cage is guarded against accidental finger contact but has no protection against water ingress, matching its role inside a closed cabinet. With a mass of 8 kg, the drive can be installed on a DIN rail or backplate without heavy support, and its convection path must remain clear to maintain thermal balance.