1. The Active Front End (AFE) is a controllable rectifier with advantages such as providing bidirectional power exchange between AC and DC power and regenerating reusable power to the mains to reduce the cost of power. The AFE uses PWM modulation to greatly reduce distinctive peaks of current and form perfect sine wave current. 2. The AFE2000 is not an AC motor drive but an advanced power supply unit that is suitable and compatible with all DC input products; it can be used with products besides Delta products. The AFE2000 unit is a green product for customers who pursue energy savings. 3. The Delta series AC motor drives compatible with the AFE2000 are listed in the chart below.