109-0524-4B03-02 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat 109-0524-4B03-02 is part of the TVM Power Supply Modules series and operates with a DC bus voltage of 300 V DC and a continuous DC bus power of 7.5 kW. It delivers a 24vl continuous current of 8 Amps and has a peak bleeder power of 10 kW. The unit has a maximum ambient temperature of 55°C and weighs 15 kilograms.
Internal Product Review
The 109-0524-4B03-02 is a TVM power supply module designed for stable drive support with 300 V DC bus voltage and 7.5 kW continuous DC bus power. Thermal and operating margins are strong, with a maximum ambient temperature of 55 °C and peak DC bus power reaching 60 kW. IP 10 protection and 14 kWs regenerated energy capacity make the unit a dependable choice for demanding motion-control cabinets.
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Product Description:
Bosch Rexroth Indramat produced the 109-0524-4B03-02, a TVM Power Supply Module in the TVM Power Supply Modules series. The unit serves as the central DC source for groups of digital servo drives by supplying regulated voltage to the intermediate circuit and handling energy returned during braking. It keeps the DC link stable so that connected axes can respond quickly to command changes without voltage sag or uncontrolled regeneration. This arrangement supports coordinated motion when several servo axes accelerate and decelerate during the same machine cycle.
The internal DC link is maintained at 300 V DC, allowing the module to deliver continuous bus power of 7.5 kW and tolerate momentary surges of up to 60 kW when several axes decelerate simultaneously. The converter provides 4.1 kW of mechanical output while drawing 550 VA for its control power from the mains. Control electronics receive dedicated ±15 V rails rated at 1.0 A and 1.3 A, preventing the logic supply from collapsing under sensor or interface loads. The device uses configuration 2 and dissipates heat through natural convection. Electrical losses are limited to 130 W, so suitable enclosure airflow normally provides adequate cooling without auxiliary fans. The IP10 protection rating corresponds to the open-frame design used for cabinet-mounted power supplies.
A dedicated bleeder resistor continuously absorbs up to 0.45 kW of returned energy and accepts peaks of 10 kW to control overvoltage events. The associated storage capacitors can accommodate a maximum regenerated energy of 14 kWs. The auxiliary 24 V logic output supplies machine I/O with a continuous current of 8 A. Operation is permitted at ambient temperatures up to 55 °C and installation altitudes up to 1,000 m without derating. The module weighs 15 kg, providing thermal mass while remaining manageable during panel installation. Because the power-loss path and bleeder network are internal, the external wiring is limited to the required grounding, power, control, and DC bus connections.
