Operating on 90 to 240 AC, the drives eliminate the need for a DC power supply by internally converting input AC to the high DC bus voltages that enable larger step motors to be driven with maximum power. The STRAC2 provides up to 2.2 A/phase while the STRAC8 provides up to 8.0 A/phase; both feature advanced microstepping performance and sophisticated current control with anti-resonance. Anti-resonance electronically damps motor and system resonances, which improves smoothness of motion and torque over a wide speed range. Like the rest of the line, the drives can operate in step & direction or pulse/pulse control mode, selected by moving a jumper located under the cover of the drive. Each drive can microstep up to 20,000 steps/rev with a 1.8 º step motor (1/100 step), and can even microstep the step motor when the command pulses are low resolution, using a feature called Microstep Emulation. All drive setup is done via dip or rotary switches on the side of the drive, including motor selection, running current, idle current, and step resolution.
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Applied Motion Products