OS3 Drives
OS3 Drives can be connected directly to the three-phase power supply with output voltage range between 220 VAC and 480 VAC. This feature allows the same drive to be used in many different geographic locations having different voltages, with no need of a transformer.
The drives can have an internal power supply for the control boards supplied directly from the mains. This solution allows the controlled stop of the load in case of a power cut. The electronics is still powered from an external 24v power supply. During the stop phase, an internal resistor dissipates the braking energy. For extremely high duty cycles it is possible to connect an external or parallel resistor instead of the internal one. The high voltage bus is accessible through a connector, allowing the use of an external power supply that includes a braking resistor common to more than one drive.
OS3 drives can be used with motors of different technologies: permanent magnets brushless, asynchronous motors, variable reluctance motors. The standard transducer is a SinCos encoder. Programmable I/O increases the drive's flexibility.
OS3 is available in two different types:
A type 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%.
B type includes three power size 5/10A, 10/20A and 15/30A connected to the three-phase power supply with a voltage level between 380 VAC and 440 VAC +-10%.
Tuning Software for OS3
The auto-tuning of the connected motor, thanks to the Windows software configuration tool (Osai Device Manager), simplifies tuning operations.
The configuration tool displays the motor's data and analyzes the drive's status with many different diagnostics.
- The introduction of digital filters allows compensation for mechanical resonance
- The time for operating the brake (release and apply) in motors fitted with brakes can be adjusted
- A configurable oscilloscope is available to analyze the details of the machine behaviour
