Analog Input Trapezoidal Brushless Servo Amplifier

The B25A20AC Series PWM servo amplifiers are designed to drive brushless DC motors at a high switching frequency. The B25A20AC is fully protected against over-voltage, over-current, over-heating and short-circuits. This model interfaces with digital controllers or can be used as a stand-alone drive and requires only a single unregulated AC power supply. A single red/green LED and a single digital output indicate operating status. Loop gain, current limit, input gain and offset can be adjusted using 14-turn potentiometers. The offset adjusting potentiometer can also be used as an on-board input signal for testing purposes, when SW1 (DIP switch) is ON.