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Manual State Transitions
State conditions can also be transitioned manually. Refer to “Commanding Goal
State Changes” on page 2–20 for instructions on commanding PV225S goal states
for manual transitions.
Shutdown → Matrix Test → Shutdown
1. Turn the ON/OFF switch to the OFF position.
2. Command the PV225S to the Matrix Test.
3. After completing the Matrix Test, command the PV225S to Shutdown.
If the O
N/OFF switch is turned to ON while the PV225S is in the Matrix Test state,
the PV225S will transition to Shutdown.
Power Tracking→ Manual Current→ Power Tracking or Shutdown
1. Verify the PV manual current parameter (
I Manual %
) is set to the desired
percent of rated.
2. Command the PV225S to Manual Current mode from the operator interface
keypad. While in the manual current mode, the user may change the PV
manual current parameter. However, the user may demand greater current
than the capacity of the PV array. If this causes the PV voltage to drop below
the minimum operating voltage (300 Vdc), the PV225S will transition to
Shutdown.
3. To exit the Manual Current mode, the user must manually command the
PV225S to Power Tracking.
Automatic State Transitions
State conditions can also be transitioned automatically. Refer to “Commanding
Goal State Changes” on page 2–20 for instructions on commanding PV225S goal
states.
Shutdown → Power Tracking → Shutdown
1. The ON/OFF switch must be turned to the ON position.
2. Once the PV voltage exceeds the PV voltage start set point (
PV V Start
) the
PV225S will start a wake-up timer (
PV T Start
).
a) If the PV voltage remains above the PV start voltage set point for the
duration of the wake-up timer, the PV225S will transition to Power
Tracking.
b) If the PV power drops below the PV power stop set point, (
PV P Stop
)
the PV225S will start a PV sleep timer (
PV T Stop
).
c) If the PV voltage and power remain below their respective setpoints for
the duration of the sleep timer, the PV225S will transition to Shutdown.