Wattsun AZ-225 User manual

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INSTALLATION GUIDE
Guide for your AZ-225 Dual-Axis, Azimuth Drive Solar Tracker
Congratulations, you have purchased the finest solar tracker available. With proper installation, your tracker will
provide years of trouble-free service while maximizing your solar power production.
Your tracker may include one of the following options: (Check your packing slip.):
♦Stainless Steel Hardware Option - Recommended for high humidity and salt laden environments.
♦Wattsun Voltage Converter Option - Required for PV Systems other than 24 VDC.
♦Manual Control Option - Exterior switches so you may manually operate the tracker.
The tracker comes complete with all the hardware necessary for assembly and mounting the PV modules. The
Wattsun™ Tracker requires a length of Eight-Inch ID Schedule 40 Steel Pipe for use as the pipe mast.
Specifications for the pipe mast can be found on the data sheet for this particular tracker. The steel mounting
pipe and PV modules are not included. Your electrician should provide all additional array wiring, fusing,
power disconnects, grounding equipment and electrical junction boxes.
WARNING:
If the Wattsun™ Azimuth Solar Tracker is not installed to manufacturer’s specifications, such
failure to properly install unit may cause tracker malfunction and or serious bodily injury or
death. This tracker moves, therefore the tracker should be situated away from anybody or
anything that may come in contact with it as it moves.
KEEP CHILDREN AWAY FROM TRACKER AT ALL TIMES.
Array Technologies, Inc.
3312 Stanford NE
Albuquerque, NM 87107
Tel: [phone]
Fax: [phone]
URL: www.wattsun.com

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Copyright © Array Technologies, Inc.
All rights reserved.
Wattsun™ is a trademark of Array Technologies, Inc.
Sixteen, BP 150 watt modules mounted on a Wattsun AZ-225 Tracker Drive.
AZ-225 Installation Guide: Revision 6
Aug 2009

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WARNING TO ELECTRICIAN OR INSTALLER
♦Please read this instruction manual completely.
♦If you are unfamiliar with NEC compliant solar electric installation, then
consult with the dealer that supplied your tracker. They should have the
skill and expertise to supply you with the necessary wiring diagrams and the
appropriate connection wire, grounding equipment, junction boxes and fusing.
♦Failure to ground the array structure, including each module frame, the
aluminum tracker frame, the drive head assembly and the pipe mast may
make the tracker susceptible to damage by lightning.
♦Do not rely on the pipe mast to act as a ground rod. It is not a reliable
substitute for a properly installed ground rod.
♦Please send in the Wattsun Tracker Warranty Card. Array Technologies
does not share any of the information provided on the warranty card.
♦Please leave this manual for the tracker owner(s). It is their property and
will help resolve any potential problems.
♦Please provide the following information for the owner:
Serial Numbers: __________________________________ ______________________________________
Serial Number located on the controller Serial Number located on the drive assembly
Tracker Type: Dual-Axis Tracker is Standard on AZ-225
Controller is powered from: Battery Bank Power Supply
System Type:
Off-Grid/Remote Home Grid-Intertie - no battery backup Grid-Intertie - battery backup
Water Pumping Other _____________________
PV Array: PV System Voltage is ______ VDC Number of Modules: __________
Module Manufacturer: ____________ Module Model: ____________
Mounting Pole Height above the Ground is: ________ FT

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TABLE OF CONTENTS
SECTION TITLE PAGE
1
Installation of the Tracker Pipe Mast and Foundation. 5
2
Orient the Azimuth Gear Drive Assembly 6
3
Install the Drive, Elevation Actuator & Torque Tube 8
4
Installing the Module Support Frame 11
5
Installing a Wattsun Solar Tracker Controller 18
6
Power Connection to the Elevation Actuator 24
7
Power Connection to the Tracker Controller 25
8
Setting Preferences and Operating the Tracker Controller 29
9
Setting the AZ Motor Limits 31
10
Manual Control Option 32
11
Periodic Maintenance 33
12
Suggested Methods for Grounding a Tracker 34
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Array Technologies, Inc. Limited Warranty 38

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Section
1
I nstallation of Tracker Pipe Mast and Foundation
WARNING! WINDY CONDITIONS CAN EXERT EXTREME FORCES ON THE ARRAY, FOUNDATION,
AND PIPE MAST OF YOUR TRACKER.
1.1)Choose an optimum solar location to install the PV array for in the ground mounting. The location should be
free from obstructions. Keep in mind that over a period of time, that trees, shrubs, etc. may grow enough to
obscure the PV array from the sun. Consult with your dealer for proper tracker spacing and alignment
regarding multiple tracker installations.
1.2)Dig an appropriate sized hole for your tracker’s foundation using a shovel, auger, or backhoe. The variables
that affect the design of the foundation include: tracker size, pipe mast height, soil conditions, geographical
location, weather and local building codes. Employ a qualified professional to design the foundation for your
tracker.
1.3)A general rule of thumb is to have an equal amount of pipe underground as above the ground and a three-foot
diameter reinforced concrete foundation. Please have a professional design the size and type of foundation
required!
1.4)Use the appropriate length of 8" ID, Schedule 40 Steel Pipe in order to leave the recommended maximum
pipe mast height protruding from ground. Consult your specific Wattsun Technical Data Sheet for the
appropriate mast height and pipe diameter size. Note: If the recommended pipe mast height is exceeded, it
may be necessary to telescope a larger diameter pipe in the lower portion and increase the foundation size in
order to withstand the increased forces exerted during windy conditions.
1.5)Cut at least two pieces of re-bar or steel angle (more with 8 module or larger trackers), at lengths equal to the
full diameter of the foundation. Weld re-bar onto (or drill holes and insert re-bar into) the underground portion
of the pipe so that the pieces of re-bar form an ‘x’ pattern that remains parallel to the ground. When the
tracker pipe mast is completely installed, the re-bar will be perpendicular to the pipe and parallel to the ground
and protrudes radially outward into the concrete foundation. The re-bar acts as an "anti-rotation" device and
will keep the pipe from spinning in the hole if the concrete shrinks back from the pipe.
1.6)Set the pipe into the hole and pour concrete around the pipe until it completely fills the hole. Also pour
concrete into the pipe to secure the re-bar inserted in the bottom portion of pipe. Make certain the pipe is
vertically plumb and allow concrete to set for at least 24 hours. If you fill the entire pipe mast with concrete,
leave at least one foot of hollow pipe at top for azimuth drive assembly clearance.
SIMPLIFIED TRACKER FOUNDATION DIAGRAM
(Using recommended mast height from your Technical Data Sheet)
Array Technologies, Inc. assumes no liability for your foundation installation.
Please consult with a local professional or your Wattsun Solar Tracker Dealer.

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Section
2Orient the Drive On Top of the Pipe Mast
2.1)Northern or Southern Hemisphere installations.
For Northern Hemisphere installations, point the motor/gear assembly to ‘true north’ *and tighten the four
set bolts to secure tracker to pipe mast. The set bolts should be tightened so that they dig into the pipe mast.
For Southern Hemisphere locations, point the motor/gear assembly to ‘true south’ *and tighten the four set
bolts to secure tracker to pipe mast. The set bolts should be tightened so that they dig into the pipe mast.
Tropical and Equatorial Installations are discussed in Section 3.5
* Note:
True north and south differ from magnetic north and south and depends on geographical location.
Locate ‘magnetic north’ or ‘magnetic south’ using a compass and adjust your tracker setting
accordingly. Your Wattsun Tracker Dealer can provide you with the Magnetic Declination for your
area. The Array Technologies web site (www.wattsun.com) has links to geomagnetic data. You can
find, or calculate, the magnetic declination for any place on the globe.
Perhaps the easiest way to find the North-South line is to get a copy of your local newspaper and find
the Sunrise and Sunset times. Determine the time (hour and minute) that falls exactly halfway
between Sunrise and Sunset. At the halfway or 'Solar Noon' point, anything that casts a shadow will
do so along a North-South line. Get a friend to help hold up a length of wood or a stick of conduit
straight up into the sky. Then stake out or mark the North-South shadow line.

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VERY IMPORTANT! “OUT OF THE BOX” DRIVE ORIENTATION
The AZ-225 Drive orientation is preset at the factory and referenced to Solar Noon. The drive should
be mounted facing due South, (Due North in the Southern Hemisphere.). The four set bolts “dig in” to
the mounting pipe and secure the drive to the pipe mast.
SET BOLTS: The 4 "cup point" set bolts "dig and cut" in to the 8" ID SCH40 Steel Pipe Mast. Tighten
the set bolts so that they put strong and equal pressure on the pipe mast. Each bolt should "show"
and equal amount of thread when you are finished . Each set bolt should be tightened to 100 Ft-
Lbs of torque.
ROLL PIN: A three-eighths inch (3/8") diameter hole is predrilled in the midpoint of the south face of
the drive. The hole accommodates the 3/8" roll pin. Once you are sure that the drive is facing due
South, you can use the hole as a guide to drill a three-eighths inch (3/8") diameter hole into and
through the wall of the mounting pipe. Then tap in the roll pin so that it penetrates through both the
drive and pipe mast. Alternately, both holes could be threaded and a bolt could be used to "pin" the
drive and mounting pipe together.
J -BOX & OTHER EQUIPMENT ON THE MOUNTING POLE: Any
equipment that will be mounted on the pipe mast should be located
on the North side (opposite of the roll pin hole), at least one foot
down from the top of the pipe. That allows for our sleeve to fully
seat on the pipe and that nothing physically interferes with the
tracker range of motion.

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Section
3Install the Elevation Actuator & Torque Tube
(Most trackers are shipped from the factory with the lower fork extensions installed. Check the bolts to
make sure that they did not loosen in transit.)
WARNING!
The AZ-225 Drive weighs from 170 to 220 pounds!
Do not use the Azimuth motor or tracker controller as
“lift handles.” You will damage the motor gearing or
tracker controller if you put any unusual force on
them.
You will have to be able to lift the AZ-225 Drive up, over
and down on top of your mounting pole. Placing the drive
on top of the pipe is at least a “two person” job. The drive
is much easier to set using a boom and pulley
arrangement or suspending it from a backhoe bucket or
other appropriate method.
Make sure that the drive “seats” completely over the pipe.
Back out the 4 set bolts and set aside if necessary to
make sure that they do no catch on the top of the pipe.
The 4 "cup point" set bolts "dig and cut" in to the steel
pipe. Tighten the set bolts so that they put strong and
equal pressure on the pipe mast. Each bolt should
"show" an equal amount of thread when you are finished .
Each set bolt should be tightened to 80 Ft-Lbs of
torque .

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ELEVATION ACTUATOR ASSEMBLY FOR DUAL-AXIS OPERATION:
Do not unscrew the inner tube of the elevation actuator! This destroys the factory pre-set mechanical upper and
lower limit switch settings. Install the elevation actuator. Center both the eyelet end (the top) of the elevation
actuator inside the forks and the elevation actuator clamp eyelet (the bottom). Firmly tighten the locknuts on the
bolt threads.
UPPER CONNECTION
LOWER CONNECTION
Your tracker is shipped with a 36” stroke linear actuator. Make sure that the motor armature (can) is on the upper
side of the actuator. That ensures that any moisture that might collect will drain out and away from the electrical
connections.
The actuator has a two cam-micro switch assembly that defines the limit of the
extension and contraction. They are preset at the factory and there is no need to
adjust them.
Do not unscrew the inner tube of the actuator when you are installing it. It will disturb
the limit switch presets.
Do not change the location of the lower eye clamp. It is preset for your tracker. The
clamp bolts have been pre-tightened to grip the body of the actuator securely. If you
over tighten them, the clamp will deform the body of the outer tube. The
deformations will cause scarring on the inner tube as it extends and withdraws.
If you have special circumstances or concerns then please contact your distributor or
Array technologies immediately.

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AZ-225 HORIZONTAL TORQUE TUBE INSTALLATION FOR THE SMALLER 4” X 4” TORQUE TUBE
Consult the diagrams below for the bolt connections. Tighten the U-bolt Nylock nuts to 70 Ft-Lbs of torque
TIGHTEN NYLOCK 5/16” U-BOLT NUTS EVENLY. TIGHTEN EACH NYLOCK NUT TO 70 FT-LBS OF TORQUE.
AZ-225 HORIZONTAL TORQUE TUBE INSTALLATION FOR THE LARGER 6” X 6” TORQUE TUBE
Consult the diagrams below for the bolt connections. Tighten the channel-bolt Nylock nuts to 70 Ft-Lbs of torque

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Section
4Install the Module Support Frame Torque Tube
SECTION 4 NOTES: Nearly every nut and bolt will be left "finger-tight" until all the modules are mounted and
the frame is "squared-up." So allow for a small amount of "play" when putting the array together. You will
snug up all the bolts and nuts when all the modules are mounted and the frame is complete.
Installation Tip: The PV modules may be mounted to the rails at this time - prior to installation onto the torque
tube assembly. This removes the difficulty of mounting each individual module to the rails while you working
off a ladder or above your head.
However, placing the heavier, assembled module sub-array onto the torque tube assembly requires at least
two people. For either application, the web of the module mounting struts must be oriented toward the outer
ends of the modules.
Procedure for Installing Solar Modules on Wattsun Tracker Universal Rails
Examples of Three and Four Column Tracker Frames
Wattsun Tracker frames are manufactured to hold the solar modules in a rectangular grid. A pair of vertical
module rails will mount a group of modules in “landscape” format.
The completed frame is made up of one to four pairs of module rails.
Each rail is u-bolted onto the horizontal “steel spine” of the tracker called a torque tube. If the rails they are longer
than ten feet then an additional support under-angle is included – one for each rail. Wattsun Trackers come with
all the hardware to assemble the tracker and mount the modules.
The end user supplies the appropriate mounting pipe and engineered foundation.

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BUILDING THE FRAME AND RACKING THE MODULES:
DO YOU MOUNT ONE PIECE AT A TIME OR BUILD SUB-ARRAYS?
Module Rail & Support Angle Detail
From the bottom up the Procedure is:
Bolt > Support Angle > Tube > Rail >Washer > Nut
One installer, one piece at a time approach.
Modules are being used to “square-up: the frame.
Notice how the modules overhang the Rails.
Sub-Array Approach: Requires a lot of people power.
Notice that the rails bolt to the intermediate module holes.
Lift by the tracker rails only, not the module frames!
Lifting and bolting the sub-array onto the tube.
Typically a 3-person job: 2 lifters, 1 bolter.
Lift by the tracker rails only, not the module frames!
The “one piece at a time” approach can get very tiring. The
installer is working with their arms and hands above their head.
We encourage installers’ to wear a Hard Hat.
Leave all frame and module bolts “finger tight.” Once you finish
the frame building and module mounting, you can go back and
“square up” the array. Then tighten all nuts with a wrench.
NOTE: If you ever “under populate” the array frame, leave
any unused space at the top of the frame. If the frame is
not totally filled out, then the greatest weight should be on
the lower sections of the frame.

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Tools Required: Frame Assembly and Module Mounting
Tool Required to Fasten
3/4 “ Open End Wrench Nylock Nuts for the Module Rail Assembly U-Bolt
7/16” Open End Wrench Flange Nut for 1/4” x 3/4” Module Mounting Bolt
1/2 ” Open End Wrench Flange Nut for 5/16” x 3/4” Module Mounting Bolt
Rubber or Plastic Head Mallet Small adjustments to shift the Rail Assembly sideways
Step 1
The modules get mounted to the rails using the
intermediate holes. Locate the intermediate
mounting holes on the frame of your module.
In general, they are placed from 7” to 16” in on the
long side (Length) when measured from the frame
edge short side (Width).
Each manufacturer has unique hole patterns. Your
mounting holes are made to accommodate either
1/4” or 5/16” module mounting bolts. The bolts are
supplied with your Wattsun Tracker.
Step 2
Identify your module mounting bolts and nuts from
the hardware kit. The module bolts are labeled and
are either 1/4” or 5/16” diameter.
Note that both the interior faces of the nut and bolt
are made to cut into the module frame. They do not
require any type of washer.

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Step 3
There are four bolts and nuts per module. Pre-
mount the module bolts so that the serrated nuts will
dig into the underside of the module frame.
Do not tighten the bolt fully. Leave it about one full
turn loose so it will glide easily in the module track.
Step 4
Measure and record the “center to center” distance
of the intermediate mounting holes. This dimension
sets the spacing of the mounting rails.
Each pair of mounting rails typically holds from 3 to 4
large modules. Typical rail spacing might be from
24” to 35” apart.
( Cross section view of the
module rails and bolt connections )
Step 5
Remove a pair of modules rails from the frame
bundle. They will be bolted on top of the torque tube
so that the “legs” of the channel face inward towards
each other.
The bolts on in the top track are the module
fasteners and the bolts in the side track secure the
module rail support angle.

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Step 6
Pull the module rail u-bolts, washers and locknuts
from the hardware kit. There will be one set of u-bolt
hardware per module rail.
If your module rail is longer than 10 feet then there
will be a corresponding support angle in your frame
bundle.
Step 7
If you have a three column tracker
(3 modules wide) then your first rail set will be
centered over the drive head and straddle the
centerline of the torque tube.
If you have a four column tracker ( 4 modules wide)
then your first rail set will be to the right or left of the
centerline of the torque tube.
(Step 1)
Step 8
Pass the u-bolt through the holes in the support
angle. Push the u-bolt up and around the torque tube
and into the receiving holes in the bottom of the
module rail.
Place a 1/2” flat washer over each leg of the u-bolt
and then secure a 1/2” Nylock nut over each leg. Do
not tighten the Nylock nut completely. Leave a little
slack so the rail assembly can be slid horizontally
along the torque tube to accommodate your “center
to center” measurement.
(Step 4)

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Step 9
Carefully fold up the support angle so that it makes
contact with the underside of the module rail. The
hole in the side face of the angle should be aligned
over the side track of the module rail.
The support angle connection to the side of the
module requires that you slide a 5/16” bolt along the
side track until it aligns with the hole in the end of the
support angle.
Do not tighten the bolt completely. Leave a little
slack so you can square up the frame at the end of
the installation.
Step 10
Use a tape measure and gap the module rails a
distance equal to the “center to center” intermediate
hole spacing. (Step 4)
Be sure that you are spacing from the centers of
both top tracks in the rails. You might have to loosen
the u-bolt Nylock nuts so that you can easily adjust
the rail assembly along the torque tube.
The racked modules and frame will be squared up at
the end of the mounting procedure.
Step 11
Make sure that the tracker is in the “stow” or nearly
horizontal position and that the elevation bar or
actuator has been installed.
Line up the module bolts into each track. You might
have to spin the bolt a bit so that the square shoulder
of the bolt line up in the slot. Push the module
forward and repeat the process with the other side of
the module.
Once the module is properly positioned on the rails,
tighten the serrated module nuts until they are finger
tight.

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Step 12
Continue populating the array with the rail
assemblies and solar modules. Even out the
spacing between the module frames (typically 1/4” in
1/2”) and square-up the frame assembly. Go back
and tighten up all the bolts and nusts left intentionally
loose.
Start with the rail assembly u-bolts Nylock nuts, then
proceed to the support angle fasteners (if provided)
and finish up with each module mounting bolt and
nut.

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Section
5Installing the Wattsun Solar Tracker Controller
WARNING! PLEASE READ THIS GUIDE COMPLETELY BEFORE CONNECTING POWER TO THE
CONTROLLER. YOU CAN DAMAGE THE CONTROLLER OR INADVERTANTLY POWER UP THE TRACKER
AND CREATE A HAZARDOUS SITUATION. NEVER APPLY POWER TO THE CONTROLLER OUTPUT
WIRES! THE CONTROLLER WILL BE DAMAGED AND THE REPAIR CHARGE IS NOT COVERED UNDER
WARRANTY.
For Installations in the Tropics:
(20 degrees North latitude to 20 degrees South latitude)
Array Technologies does not encourage the use of Dual-Axis Trackers in “low latitudes.” Wattsun Single-
Axis Trackers are preferred in the tropics. Contact Array Technologies for performance data and
recommendations.
The azimuth tracker works by rotating the PV array about the pipe mast then tilting the array to the proper
elevation angle. Therefore, for installations near the equator it will be necessary to rotate the azimuth tracker 180
degrees twice a year. Depending upon the time of year, trackers in this region will find the sun anywhere from
north, south, or directly overhead of its location, making manual rotation necessary.
For example, at the equator rotation of the tracker will need to occur on the first day of spring and the first day of
fall. The array should point north on March 21st, and rotated 180 degrees to point south on September 23rd.
To rotate the tracker on the pipe mast, loosen the four set bolts on the azimuth drive, rotate the tracker and re-
tighten. Marking the pipe mast for the two yearly positions, aids in seasonal adjustment. You must also leave
sufficient output wire lengths from the array to allow for rotation.
24 VOLT TRACKER CONTROLLER SPECIFICATIONS
Controller input power specifications:
The input voltage range is 23 to 50 volts DC.
Use a Wattsun Voltage adapter to power the controller for nominal voltages other than 24 VDC.
Tracker controller wiring and drive motor wiring:
Do not connect the motor output wire harness to a power source! Connecting any of the controller output
wires to the PV array or a power source will cause permanent damage to the controller and void the
warranty .
Power supply connection options:
The input power leads are Red (positive) and Black (negative) wires in the two-wire cable mounted on the
left-hand side of the controller chassis. The input wires are clearly marked with a tag.
Power consumption, including motors:
Less than 10 watt-hours per day.

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THE TRACKER CONTROLLER IS PREINSTALLED ON THE AZ-225 DRIVE.
WARNING!
MAKE THE “POWER IN” CONNECTION LAST!
DO NOT ENERGIZE THE WATTSUN SOLAR TRACKER CONTROLLER UNTIL YOU HAVE COMPLETED
THE ENTIRE TRACKER INSTALLATION.
TWO ADDITIONAL CONTROLLER CONNECTIONS THAT GET MADE BY THE INSTALLER:
Sensor mounts on the top edge of the array.
Center it on the top to make for a neat wire
run. The remote sensor wire plugs into the
base of the sensor. Twist the lock ring!
There is a two-wire “pig-tail”
that is prewired into the
azimuth motor. It needs to be
connected to the elevation
actuator motor.

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WATTSUN TRACKER CONTROLLER: FUNCTION AND FEATURES.
OVERVIEW
Wattsun™ Solar Trackers utilize a patented, closed loop, optical sensing system to sense the sun’s position
and track it. The sun sensors are mounted on the remote chassis and feed information to the control
electronics about the direct component of sunlight available, the diffuse amount of sunlight, the total amount
of sunlight as well as the differential amount of sunlight on opposing sensors. Based on this information, the
controller seeks to equalize the sunlight received by opposing sensors for each axis.
The controller circuitry automatically adjusts the tracker sensitivity. It increases the sensitivity with increased
direct sunlight and decreases the sensitivity with scattered or diffused light - present during cloudy
conditions. This enables the tracker to eliminate undue hunting in cloudy or overcast conditions when the
sunlight is scattered. It also adjusts according to the total amount of light received by the sensors.
When the tracker controller is connected to a battery bank or constant power source, the controller senses
sunset and returns to the sunrise position. When it is powered directly from the PV array, the tracker returns
to sunrise at first morning light. The controller uses energy integration circuitry, enabling the tracker to move
with as little as 20ma of available current.
The tracker controller sends a signal to the DC gear motor that moves the PV array to a perpendicular
position relative to the sun’s rays. The motors are small, fraction HP, low voltage, gear motors that move the
tracker into position. The gearing is designed such that high winds or other forces cannot drive the tracker
back. Because they are DC drive motors, one polarity moves them in the forward direction and reversing the
polarity moves them in the opposite direction. When the controller wants the tracker to move, it sends a
signal of the appropriate polarity to the DC gear-motor. Once the tracker has moved to the “on track”
position, the controller electrically “brakes” the motor to stop movement that results in greater tracking
accuracy.
STANDARD FEATURES OF YOUR WATTSUN CONTROLLER
♦Controller mounted on the drive for maximum accessibility.
♦Sensor mounts independently of the main chassis.
♦Dip switches to test the Azimuth and Elevation Limits.
♦Dip switch to set nighttime Elevation (stow) position.
♦Controller outputs are short circuit protected and will limit the output current to 3 amps.
♦Inside controller chassis are light sensitivity adjustment potentiometers for Azimuth and Elevation.
♦Controller is equipped with a 5-amp automotive spade type fuse (ATO) inside the controller chassis.
♦Self-resetting thermal fuse that shuts off power to the tracker motors in case of obstruction.
♦Filtering to protect the tracker motor against "noisy" PWM charge controllers.
♦Improved lightning protection.
DUAL-AXIS NOTES
The controller prioritizes the azimuth (east/west) axis. If the azimuth axis is not on track, the elevation axis will
not function. Once the azimuth axis has locked onto the sun and stops moving, the elevation axis adjusts.
However, if you power the controller from a battery bank, you can choose to allow simultaneous azimuth and
elevation motion.
NOTE
The Array Direct method is not recommended for powering Azimuth-Drive Trackers. You can easily lose of
the available 30% of a long summer day!