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2017 Sensata Technologies
Operation
4.2 Front Panel Operation
When power is applied, the display on the PT controller goes through a power-up test routine (see
Figure 2-30). Once the power-up test is complete and no faults occur, the controller begins operating
and the display begins automatically scrolling through the operational displays (see Figure 4-2).
4.2.1 Operational
Displays
The operational displays provide information on the PV voltage and power, the battery voltage
and current, the power status, and any fault condition that may occur. Each operational display
is shown in a particular sequence; after all the displays are shown, the sequence starts again.
Unless there is a fault, the display automatically scrolls continuously through each operational
screen. If a fault occurs, the display stops scrolling and shows the fault display. Once the fault
condition is acknowledged (by quickly pressing the SELECT pushbutton), the display begins auto-
scrolling again. After the auto-scrolling continues, the fault screen and the
fi
rst four operational
screens are shown.
The display can be stopped from auto-scrolling by pressing the SELECT pushbutton for one second.
Once the display is no longer auto-scrolling, you will need to quickly press and release the SELECT
pushbutton to manually scroll through each operational display. While manually scrolling thru the
displays, the Power Status code (which may not have shown while auto-scrolling) will always show
after the
fi
rst four operational displays—along with the fault display if active.
Info:
If the display is auto-scrolling, the Power Status code will only show if the controller’s
output power is being limited (P03, P04 or P05). Otherwise, only the
fi
rst four operational
displays will be seen—along with the fault display if active and acknowledged.
Info:
If the display is not automatically scrolling, the SELECT pushbutton can be pressed
for 1 second to allow the display to resume auto-scrolling.
Figure 4-2, Scroll Sequence of Screens
1) PV ARRAY VOLTS
- displays the
input voltage
from the PV array.
2) PV ARRAY KW
- displays the
power (from the
PV array) to the battery bank in kilo-watts (1000
watts). Examples: 2.54 = 2540 watts, 0.32 = 320
watts, 0.06 = 60 watts).
3) BATTERY BANK VOLTS
- displays the battery
bank voltage.
4) BATTERY BANK AMPS
- displays the output
current to the battery bank.
5) Power Status Code (P##)
- displays the
controller’s Power Status code only during auto-
scroll if the PV power is being limited (P03, P04, or
P05), or displays whenever manually scrolling. See
Section 4.2.3 for Power Status Code descriptions.
6) Fault Code (F##)
- displays the Fault
code only when a controller fault occurs. If
auto-scrolling, a fault will stop the display
from autoscrolling. Quickly press the SELECT
pushbutton to acknowledge the fault and to allow
the display to continue auto-scrolling. See Section
5.3 for Fault Code descriptions.
