Compact AC drive OSAI

OS3 drives can be directly connected to the 3 phase supply network. They operate with a nominal 400V to 480V AC power input. This characteristic allows the product to be used in applications in a variety of geographical locations without need for a transformer to adapt to the local power source. The drives have an internal supply derived from the 3 phase to feed the control’s electronics. This feature allows dynamic breaking in the event of interruption of the power network. The control’s electronics are also supported by an external 24v d.c. supply. During the dynamic breaking phase, energy accumulated by the load is dissipated across internal breaking resistors. For extremely heavy work cycles an external breaking resistor can be connected in place of, or in parallel with the internal resistors. In common with most drives, the high-tension bus is accessible through a connector, this allows the use of external supplies containing breaking resistance. Various motors with different technologies can be controlled, such as permanent magnet motors, brush-less motors, induction motors and variable reluctance motors. The standard transducer is a sinusoidal encoder (Sin-Cos). Programmable inputs and outputs increase the drive’s flexibility. The OS3 family of drives is available in 2 different families : family A includes three power size 3/6A , 5/10A and 9/18A connected to the three-phase power supply with a voltage level between 220 VAC and 480 VAC +-10%. Family B includes three power size 5/10A , 10/20A and 15/30A connected to the three-phase power supply with a voltage level between 380VAC and 440VAC +-10%.

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