Application

Used to control and power a DC motor from a solar panel. The unit prevents stalling of the motor under less than full sun condition. The power of the sun is transformed to the motor running conditions so as the sun goes down the motor slows down instead of stalling. Conversely, or as the sun comes up the motor starts running much earlier instead of staying stalled for hours when it could be running. This translates into more running time of the motor where it spends a lot of time working instead of stalled doing no work.

Features

• Voltage Limited Output - prevents motor burnout
• Internal Fuse - 5 amp automotive style
• Greatly increases water flow, even under reduced sunlight conditions (over 40% likely)
• Transient Protected on the input and output
• Float Switch input for on/off control
• Single Unit Switchable 12 V or 24 V
• Ultra High Efficiency >94%

Electrical Specifications

Mechanical Specifications

Weight:

• less than 0.5 lb.

• 3" X 2" X 1.5" resembling a junction box with mounting feet

• -40 to 70 deg. C

• 90 % non-condensing
Note: To allow for changing the fuse the cover can be removed. To make the unit waterproof, apply a small amount of silicon around the unit's lid.

Connections

• Power: PV and Load 6 inch # 16 AWG flying leads

Input: Red = PV +, White = PV -

Output: Orange = Pump +, Brown = Pump -

• Signal: float switch, 12/24 V select

6 inch # 24 flying leads yellow: connect to PV - = OFF for float switch operation

6 inch # 24 flying leads purple: connect to PV - = 24 V operation disconnected = 12 V operation

Application Notes

1. This Pump Power Tracker(TM) is quite capable of putting out over 15 amps into a stalled load even from a single 30 watt 4.5 amp panel. It is recommended that a fuse or overtemperature switch matched to your pump motor be incorporated in the system to protect your pump or motor.
2. Float Switch operation draws microamps of current, i.e. small wire gauge, allowing long distance runs between float switches / holding tanks, and PV / pump driver without the need to string long lines of heavy gauge wire.
3. Unit is a true 3 amp unit, all necessary derating already accounted for. Unit is capable of 5 amp operation with normal derating practices.
4. As with all electronics, it is recommended the unit not be mounted in direct sunshine.
5. Solar panel or energy limited input only.

Mechanical Drawing: Click here for picture

Note: In the interest of continuous product improvement, specifications subject to change without notice.

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