Sun Pumps SJT10-120BL - Manual (Page 3)

1.0 Introduction
Thank you for selecting a SunPumps SJT series solar jet pump system. The SJT series pump and PCA series Sensorless Brushless DC
pump controller are the key components to high quality solar powered pumping systems. Their stand-alone, pollution free and low noise
operation makes them an ideal solution for remote homes, irrigation projects, and wildlife and stock watering without violating the
environment.
SunPumps SJT series systems are solar powered, shallow well jet pumps, utilizing a sensorless brushless DC motor. The brushless DC
motors constructed of high quality, anodized, die-cast aluminum and the controller is mounted in a powder coated, die cast, NEMA 3R
enclosure. These pumps were designed specifically for water delivery in remote locations.
The PCA-BLS series controllers are microprocessor based solid state DC power converters designed as the interface between a solar
module array and a three phase sensorless brushless DC pump motor. The purpose of the controller is to operate the high efficiency,
high reliability DC motor and maximize the total daily water output while providing protection for the pump as well as providing an
interface with other related pumping system equipment.
Although these SJT series pump systems are easy to install, please read this manual to become familiar with the pump and
controller features, functions, connection points and various configurations. For future reference, keep this manual and other
relevant product information in a safe place.
PRECAUTIONS

Safety First – Always understand what you are doing when working with any form of electricity. Guessing at something
is not worth the potential of product damage and/or severe personal injury.

Shut down all power when working on the system.

Do not feed live wires into the PCA-BLS-M2. Personal injury or other damage may result.

Do not exceed the voltage rating of the controller.

Do not start or run the pump dry.

Do not splash water on the controller when the cover is open.

Mount the controller in a shaded, well vented, vertical position.

Installation of this system should be done by a licensed Pump Contractor.

Verify wiring connections between the controller and the motor before starting the pump.
2.0 Product Overview
The SunPumps PCA-BLS-M2 series controllers were designed specifically for SunPumps sensorless brushless three phase DC pumps.
When properly installed and configured, the unique features incorporated into this stand-alone system will automatically control and
protect your pump system permitting many years of dependable, trouble free service
. SunPumps has produced two versions of this
controller. The notable differences between the two are certain set points and electrical characteristics which are detailed in the table
below.
Table 1
Controller Model Min
Voltage 1
Max
Voltage
Min Power Max
Power
Low Water
Cutoff Min Low Water
Cutoff Max
Nominal
Voltage
PCA-60BLS-M2 2 30 V 100V Set by LWC 840 W 50 W 300 W 60 V
PCA-120BLS-M2 2 90 V 200 V Set by LWC 1000 W 50 W 500 W 120 V
1 Min Voltage is the minimum voltage which the unit must see in order to start the pump. If this voltage is not obtained, the unit will not attempt to start
the pump. Voltages lower than this will not hurt the unit.
2 Both controller models have the same operating features, functionality and setup. Voltage and power tolerances are the only differences of concern to
the end user. This manual will only differentiate when necessary for clarity.