RED
BLUE
GREY
YELLOW
SHIELD
A+
24V
0V
B-
BROWN
BLACK
GREY
WHITE
SHIELD
A+
24V
0V
B-
RED
BLACK
ORANGE
BROWN
SHIELD
A+
24V
0V
B-
CHECKOUTS
Connected all system voltage phases in the right order
Connected the CTs and verified their mappings to their
respective phases
Connected the internal Ethernet cable from the Wattch
Edge Controller, and any external Ethernet devices, to
the Digi modem
SENSOR INSTALLATION
PLANE OF ARRAY
Mount in the same orientation as the array. Place the sensor near the
geometric center of the array if possible, or at the end of a row near the
center of the array. Ensure that there are no objects that could shade the
sensor at the beginning or end of the day when the sun is low.
Mount the face of the sensor flush with the array so that the sun hits the
sensing element at approximately the same time as the cells. DO NOT install
sensors in a location where they are meaningfully more or less shaded than
the array.
GLOBAL HORIZONTAL IRRADIANCE
Ensure that the sensor is not shaded at any point during the day and is
perpendicular to the Earth’s surface. Some sensors, such as the Hukseflux
SR05-D1A3, come with a ball level built in to the chassis to make flat
installation easier.
BACK OF MODULE TEMPERATURE
While the optimal location will vary from project to project, we recommend
placing this sensor near the geometric center of the array.
AMBIENT TEMPERATURE
Make sure that the shroud is installed correctly and that the sensor is far
from any water sources.
Installed the antennas as shown on the opposite page
If required, connected all RS-485 connections
Torqued all connections to the proper specifications
Installed the batteries according to the guide on the
opposite page
IMT
HUKSEFLUX
KIPP & ZONEN
BEFORE powering the DAS, verify that you have:
Torque these connections to 4.5 in-lb. The shield should be
terminated to ground only at the DAS side.
POWER UP
Flip the AC breaker to the ON position. Ensure that the DC
OK light on the power supply (top left) is
green
, and that the
LEDs on all of the components are lit according to the below
guidelines. Some of the LEDs are difficult to see in sunlight.
• Modem: PWR
cyan
, SIM
blue
, LTE
blue
• Wattch Edge Controller: PWR
green
• Meter: P1-P3 LEDs blinking
green
or red
• DUPS40 UPS: DC OK LED on
Flip the I/O breaker to the ON position and then flip the UPS
breaker to the ON position.
TRIMMING
The system must be powered up via AC in order to perform this
step, and the UPS breaker must be turned on as well.
The power supply needs to be trimmed to 27.0 V ±100 mV to
fully charge the batteries. While measuring the voltage on the
DC terminals of the power supply with your multimeter, use
the Phillips screwdriver to slowly trim the voltage using V ADJ
to the correct voltage.
Be extremely careful NOT to exceed 28V.
