Three-phase variable-speed drive RP series

for motors

Speed regulator/torque reducer for three-phase motors. Any application that includes a three-phase motor, such as ventilation equipment, pumps, etc. 3-speed applications such as construction cranes and overhead cranes. Power control in transformers and resistances. These actions are static control devices of three-phase currents that supply a conventional squirrel-cage motor or resistive or slip-ring motor. Basically, its principle is the variation of alternate voltage applied to the motor. 1. All-or-nothing. 2 speed configuration application. When the unit receives voltage it feeds the voltage determined by the potentiometer MIN MOTOR (adjusted to 0, the motor stops). When enabling the 2nd speed contact, the motor is supplied with 400 V and rises to maximum speed on a ramp that can be adjusted with the POT ACEL potentiometer. 2. Potentiometer. To obtain any intermediate speed for different applications, such as fans, pumps, conveyors, etc. The best response is obtained with resistive rotor motors and when the load is proportional to the speed squared. 3. Voltage. External reference of 0/10 V from the PLC or another system. 4. Fixed gears. It has up to 3 gears. When the unit is powered up this supplies a motor voltage (1 st gear) that is adjusted with the MIN MOTOR P5 potentiometer. When 2nd gear is enabled the motor voltage ramps up to an Intermediate value between the 1st gear and the 3rd. When 3rd gear is enabled, the motor voltage ramps up to mains voltage. The ramp is adjustable through the POT ACEL potentiometer. The motor can be braked with a direct current injection between one phase of the motor and its star with the help of a timer and a rectifier