DC4QR
DC BRUSH TYPE SERVO AMPLIFIERS

FEATURES

• Surface-mount technology, small size, low cost, ease of use, high reliability
• MOSFET power bridge
• Operation frequency 20 kHz
• Four quadrant regenerative operation
• DIP switch selectable modes of operation: current (torque), velocity (with tachometer), IR compensation (velocity without tachometer) loop control
• DIP switch selectable continuous current one-half or one-third of peak current
• Torque - speed and I2t motor characteristics simulation
• Protections: over-voltage, over-current, over-heating, short-circuits (across motor, ground and power leads), tachometer signal loss, positive feedback in the velocity control loop
• DIP switch selectable tachometer transfer characteristic (V/rpm)

DC4Q Series PWM servo amplifiers are designed to drive brush type DC motors at a high switching frequency. Operating efficiency is 95%. Seven LEDs and a relay output indicate the operating status. DC4Q servo amplifiers can easy interface with digital controllers or can be used as stand-alone drives. Loop gain, maximal current, nominal voltage and command signal weight can be adjusted by single-turn potentiometers. The offset adjusting potentiometer can also be used as an on-board input signal for testing purposes when a jumper is ON. DC4QR servo amplifiers have built-in rectifier and shunt-regulator, so they require a single AC power supply (single or three phase).