Xantrex Technology PV-225208 AUTOMATIC STATE TRANSITIONS

PV-225208 Photovoltaic Inverter

Operation and Maintenance Manual

DOCUMENT: 151811 4-6

SECTION 4

OPERATION

Figure 4-3

PV-225208 State Machine

• Power Tracking→ Manual Current→ Power Tracking or Sleeping:

Verify the PV manual current parameter (I Manual %) is set to the desired percent of rated. Com-

mand the PV-225208 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 (330 Vdc), the PV-225208 will transition to Sleeping.

To exit the Manual Current mode the user must manually command the PV-225208 to either Power

Tracking or Sleeping.

AUTOMATIC STATE TRANSITIONS

• Sleeping → Power Tracking → Sleeping:

The On/Off switch must be turned to the On position. Once the PV voltage exceeds the PV voltage

start setpoint (PV V Start) the PV-225208 will start a wake-up timer (PV T Start). If the PV voltage

remains above the PV start voltage setpoint for the duration of the wake-up timer, the PV-225208 will

transition to Power Tracking.

If the PV power drops below the PV power stop setpoint (PV P Stop) the PV-225208 will start a PV

sleep timer (PV T Stop). If the PV voltage and power remain below their respective setpoints for the

duration of the sleep timer, the PV-225208 will transition to Sleeping