Product Description:

The VAU01.1-1U-024-024-240-NN is an uninterruptible power supply from Bosch Rexroth Indramat and belongs to the VAU Uninterruptible Power Supplies series. It is intended to keep the 24 V DC control bus alive in IndraControl V automation platforms whenever the primary source is interrupted. This helps prevent PLC resets, fieldbus dropouts, or encoder miscounts during short-term power disturbances.

The unit accepts a nominal input of 24 V DC and draws up to 12 A max from the upstream supply while charging its internal storage network. During an input power outage, it can deliver a continuous output of 10 A max, supporting loads that together demand as much as 240 W. Switchover from line to battery occurs in under <1 ms, which is fast enough that typical 24 V logic circuits do not recognize the transition. The switch-on threshold is 22 V ±5%, so the UPS does not connect to a sagging line, and it disconnects below the 19 V ±5% switch-off point to protect downstream electronics. Surge immunity up to 35 V for 100 ms helps protect the filter stage from inductive overvoltage, while reverse-polarity protection helps prevent damage from wiring mistakes. Design revision 1 measures 158.6 mm high, 120 mm wide, and 132.7 mm long, allowing DIN-rail mounting inside compact IP20 cabinets.

Total power drawn from the source peaks at 288 W when the charger is at maximum load, and the circuitry is rated for a cumulative capacitance of 5600 µF on its output, accommodating multiple parallel servo drives. With an enclosure rating of IP20, the device is intended for clean control panels where airflow is unrestricted. Backup energy supports an override time of up to 3 min max, which can allow generator startup or a controlled axis shutdown. The UPS includes a conformal-coated PCB and reverse-polarity diodes, and it complies mechanically with the IndraControl V family so it can be installed beside motion controllers without additional spacers.