Product Description:

The TVM 2.1-50-220/300-WI-220/380 is a power supply module produced by Bosch Rexroth Indramat within the TVM Power Supply Modules series. It converts three-phase mains power into a regulated DC link for Indramat drive controllers, providing the energy reservoir and auxiliary voltages required in multi-axis automation lines. The device is configuration 1 in Series 2 and is intended for panel mounting inside electrical enclosures, where its IP10 housing allows convective ventilation.

During normal operation, the module draws a nominal input of 220 V AC and rectifies it to a link circuit level of 300 V DC. From this bus, it can deliver a rated output current of 50 A, while a short-term peak of 150 A for 300 ms permits acceleration phases without voltage sag. Surplus regenerative energy is dissipated by an internal bleeder rated at 0.45 kW, and a separate blower circuit consumes 30 W of ventilation power to move cooling air through the frame. The unit simultaneously supplies auxiliary rails of 1.0 A at -15 V, 0.9 A at +15 V, and 8 A at +24 V for control electronics and contactors. Under continuous duty, the assembly may lose up to 580 W as heat, which must be extracted by cabinet airflow.

The module is intended for installations that stay within its thermal and mounting limits. Heat-related derating does not start until ambient temperature reaches 55 °C, and full performance is maintained up to a mounting height of 1000 m above sea level. Within this envelope, the module can accept regenerative bursts totaling 14 kWs before the bleeder reaches saturation, a margin suited to multi-axis machines with frequent braking cycles. Its continuous power handling capability of 15 kW aligns with medium-size servo groupings, ensuring that the downstream drives receive stable DC even when all axes accelerate simultaneously.