PDS51 Series
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1.2 System Combination
■
PDS51 Solar Water Pump System Combination
：
A
、
Solar Arrays
B
、
PDS51 Solar Pump Controller
C
、
Water Pump
D
、
Water Well and Optional Level Probe
E
、
Water Tank
The PDS51 solar pump controller can start the water pump smoothly and match the
changing power provided by the solar panel. The benefit of soft start is that the pump/motor
has no surge and energy shock during startup, which helps reduce wear and tear on the
motor and pump system.
■
Requirement for Check Valve
：
Note
：
To ensure maximum reliability of the system and water supply, check valves
must be installed in the output pipe. The first check valve must be installed on the water
pump outlet, and the remaining check valves should be installed on the vertical pipeline
every 30 meters (100 feet) behind the pump.
1.3 System Function
■
System Diagnose
The PDS51 solar water controller continuously monitors the performance of the system
and can detect various abnormal conditions. In many cases, the controller will provide
compensation as needed to maintain uninterrupted running of the system. If there is a
possibility of equipment damage, the controller will protect the system and display the fault
status; if possible, the controller will restart after the fault status is eliminated. For
information on fault codes and corrective actions, see the Diagnosse and Troubleshooting
chapter.
■
Soft Start of Motor
Typically, the PDS51 solar pump controller will run when there is a demand for water
and electricity is available. Every time the PDS51 solar pump controller detects a water
