Product Description:

The TVD 1.3-08-03/S007 power section is manufactured by Bosch Rexroth Indramat as part of the TVD Power Supply Modules series. It serves as the regulated DC source inside multi-axis drive racks, converting three-phase line energy into a stable bus for servo amplifiers and absorbing regenerated energy during braking. This arrangement supports common bus operation across several axes and helps keep supply conditions stable when load demand changes quickly. It is intended for supply duty rather than direct motor control, with the connected inverter modules handling current regulation for each axis. The designation places it in hardware series 1 and design version 3, so it can be paired with compatible TDM inverter modules.

Under continuous duty, the module supports a DC bus voltage of 320 V and delivers up to 7.5 kW of power to connected drives. For short acceleration bursts, the bus can rise to 22.5 kW without exceeding thermal limits, which helps the rack handle brief peak demand. Line-side demand does not surpass 300 VA, so the control supply load on cabinet feeders remains low. A built-in resistor stack removes surplus energy, and its continuous dissipation limit is 0.5 kW during routine deceleration. The bleeder also works with an additional capacitor bank of up to 70 mF, which increases stored energy for applications with high inertia. Regenerated energy per braking event must stay below 30 kWs so the absorber remains within its operating range.

During emergency stops, the bleeder can briefly absorb 20 kW, safeguarding the shared bus until motion ceases. Two auxiliary rails supply control electronics: the +15 V line provides 2.5 A, and the 24 V logic rail furnishes 7.5 A, so interface circuits, relays, and sensors can be powered directly from the module. Internal losses are limited to 180 W, and that heat is removed by natural convection inside enclosures with IP 10 protection, so unobstructed vertical airflow is important. Reliable operation is permitted up to 55 °C ambient, 95% relative humidity, and installation heights of 1000 m without derating. The 10.5 kg housing provides a compact mechanical format for rack mounting and leaves space for series-specific wiring ducts and standard mounting hardware.