PDS33 Series- 10 -Chapter 2 General InformationThe PDS33 solar pump controller is a variable speed motor drive designed to runany IEC three-phase asynchronous motor. The PDS33 solar pumping systemprovides water to remote locations by converting high voltage, direct current from asolar array into alternating current to run a standard three-phase asynchronous motor.When solar power is not available, the controller can be switched manually to analternate single-phase or three-phase AC input such as a generator or inverter frombattery, if available. The controller provides fault detection, motor soft start, andspeed control. The PDS33 solar pump controller is designed to provide thesefeatures with the plug and play ease of installation.The PDS33 solar pump controller is designed with the high standard of reliabilityexpected of products. The controller attempts to drive the pump and motor to deliverwater even under adverse conditions, reducing output as necessary to protect thesystem components from damage, and only shutting down in extreme cases. Fulloperation is restored automatically whenever abnormal conditions subside.2.1 InspectionBefore installation, inspect the PDS33 solar pump controller unit. Verify that thepart number is correct and that no damage has occurred during transportation.NOTE: PDS33 solar pump controller is one component of a PDS33 solar pumpingsystem which has other two optional components, solar array and AC pump withmotor.2.2 Descriptions and FeaturesThe PDS33 solar pump controller is based on a standard PDS33 platform controllinga standard three-phase asynchronous motor driving a pump powered by a solar arrayor an optional AC generator backup.