TDM4.1-20-300W0 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat TDM4.1-20-300W0 is part of the TDM Servo Drive Modules series and features a continuous current of 15 Amps with a continuous power output of 6 kilowatts. The drive supports a DC link voltage of 300 VDC and employs natural convection cooling. It has a protection rating of IP10 and weighs 8 kilograms.
Internal Product Review
The TDM4.1-20-300W0 is a Bosch Rexroth Indramat servo drive module rated for 15 A continuous current and 6 kW continuous power. Natural convection cooling and a 300 VDC DC link give this unit an efficient, well-balanced design for servo applications. IP10 protection makes this module a strong choice for dependable cabinet-based drive control.
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Product Description:
The TDM4.1-20-300W0 servo drive module is produced by Bosch Rexroth Indramat as part of the TDM Servo Drive Modules series. Designed for closed-loop motion platforms, this module interfaces between the plant’s DC supply and synchronous motors, converting control commands from the higher-level CNC or PLC into precise stator currents. By providing regulated acceleration, deceleration, and holding torque, it supports positioning tables, handling robots, and packaging lines that require repeatable velocity profiles without external braking resistors. This arrangement helps the axis respond quickly to commanded changes in speed and torque during repeated production cycles.
Its power section is referenced to a bus voltage of 300 VDC, and the drive can deliver a continuous phase current of 15 A while sustaining a mechanical output of 6 kW. For short transients, the controller permits a peak envelope of 20 A, and that same value is used as the type current for cable and fuse selection. Electrical insulation follows category C for reinforced spacing. The integrated ready relay is rated for 24 V at 1 A and signals standby status to the control rack. Internal electronics draw 60 mA from -15 V, 150 mA from +15 V, and 400 mA from +24 V control rails. Front terminals are guarded to IP 10, which is suitable for installation inside protected electrical enclosures.
Thermal management relies on natural convection, so airflow around the heat sink must remain unobstructed to dissipate the continuous loss of 110 W generated at rated current. The module can be mounted up to 1000 m above sea level without derating, but ambient temperature has to be limited to 55 °C during reduced-rating operation. Overall mass is 8 kg, which helps with panel layout and vibration analysis when several axes are grouped on a common backplane. Passive cooling also eliminates the need for auxiliary fans in the drive section.
