VMA 021KB 001-D

VMA 021KB 001-D, Bosch Rexroth Indramat, VMA Power Modules is a high-dynamics power supply module engineered for demanding industrial servo drive environments. This unit seamlessly integrates into modular inverter systems and delivers robust performance under varied operating conditions. Its compact form factor ensures straightforward installation within tight cabinet spaces, while the internally mounted ballast switch supports both internal or external configurations. Maintenance is simplified by a standard air-cooling mechanism and a repetition time of 17 seconds for ballast switching, minimizing downtime and service complexity.

The supply stage accepts a Supply Voltage of 400–460 VAC and regulates the Direct Current Link Voltage to 670 V DC for stable downstream power. It draws a Current Input of 2.1 A at mains, and an auxiliary External Power Supply Voltage of 24 VDC consumes just 1 A for control circuits. The module delivers a Rated Power of 16 kVA at Rated Current of 23 A (45 °C ambient) and can peak to 20 kVA output without derating. It features a Modular Inverter with selectable internal or external ballast switch, a Module Width optimized for compact mechanics, weighs 15 kg, and occupies minimal panel depth. Braking functions include one-time Braking Energy dissipation of 6.5 kWs and continuous Braking Power of 400 W, ensuring safe energy recovery during rapid deceleration.

Designed for global deployment, the VMA 021KB 001-D supports operation up to Operating Altitude of 0–1000 m and conforms to Rexroth Indramat’s environmental guidelines. Its streamlined interface and proven internal switch topology deliver reliable integration into VMA Series servo systems. Ideal for machine builders requiring high availability, this module offers exceptional efficiency, secure energy handling, and predictable performance in automation, robotics, and high-speed positioning applications.