Product Description:

The TVR3.1-W015 is a regulated power supply module manufactured by Bosch Rexroth Indramat within the TVR Power Supply Modules series. Installed in drive cabinets, it generates a stabilized 320 V DC bus and a 24 V auxiliary rail that power multiple Indramat servo inverters. By sourcing and absorbing energy during motoring and braking cycles, the module maintains constant bus voltage, limits line-side disturbances, and supports continuous motion in automated machine tools, packaging lines, and material-handling cells. This arrangement lets several connected axes share one regulated power source instead of relying on separate supply sections for each inverter.

During steady operation, the module can deliver 11 A for controller logic, fans, and sensors through its auxiliary output. The DC link is rated for a continuous feed of 15 kW, while regenerative events may return up to 10 kW without overvoltage. Nominal bus potential is held at 320 V, and internal resistors dissipate up to 350 W of system losses. The electronics section itself draws only 500 VA, and the core design limits idle loss to 50 W. Because the semiconductors are mounted on a large finned heat sink, waste heat moves directly into the panel air stream. That operating behavior helps connected inverters maintain control response when axis demand changes quickly and when braking energy flows back into the shared bus. With a power dissipation factor of 20 W/kW, heat production scales predictably, allowing cabinet ventilation to keep components within limits.

For short bursts, the DC bus can supply 45 kW of peak power, and the bleeder network accepts braking surges up to 40 kW. Energy storage capacity reaches 60 kWs, so most decelerations are absorbed internally without stressing the mains. Safe operation is permitted up to an ambient temperature of 55 °C and an installation altitude of 1000 m before derating is required. This stored energy reduces sudden demand on the incoming line and smooths transitions between acceleration and deceleration across multiple axes. The steel enclosure weighs 31 kg, adding thermal mass that helps moderate temperature rise during continuous duty.