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. 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. |
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Download the PPT
12/24-7V owners manual |
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Features |
Voltage Limited Output |
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Internal Fuse- 10 amp automotive style fuse |
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Greatly increases water flow, even under reduced sunlight
conditions (over 40% likely) |
| Transient
Protected on the input and output |
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Float Switch input for on/off control |
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Single Unit Switchable 12 V or 24 V |
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Ultra High Efficiency >94 % |
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Electrical specifications |
| Nominal Voltage
(V) |
12 / 24 |
| Nominal PV Input (V) |
12 / 24 |
| Maximum PV Input (V) |
60 |
| Maximum Output Voltage
(V) |
15 / 30 |
| Maximum Output (A) |
7 |
| Maximum Output (A) short
term - 10 sec |
15 |
| Efficiency |
>94% |
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| ** Special units have a suffix of M XX
after the part number. The maximum output voltage of the
pump driver is XX. For example PPT 12/24 - 7V M6 will
power a 6 V motor from a nominal 12 V solar panel. Note
that the motor current increase by the ratio of approx.
15/6. Thus a 1 amp 12 V nominal solar panel will power
the motor at 2.5 Amps. |
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Mechanical specifications |
| Weight |
less than 1 lb. |
| Size |
4.5" X 2.1" X 2.1" |
| Operating Temperature |
-40 to 70 deg. C |
| Humidity |
90 % non-condensing |
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| 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 units lid.
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Electrical connections |
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Power: PV and Load 6 inch
# 16 AWG flying leads |
- Input: Red = PV +, Black = PV -
- Output: White = Pump +, Blue = Pump -
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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
- 6 inch # 24 flying leads orange: connect to PV
- = 30 V output limit disconnected = 15 V output limit
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Application notes |
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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.
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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. |
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Unit is a true 7 amp unit, all necessary derating already
accounted for. Unit is capable of 8 amp operation with
normal derating practices. |
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As with all electronics, it is recommended the unit not
be mounted in direct sunshine. |
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Solar panel or energy limited input only. |
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