Automatic State Transitions - Xantrex PV-100208 Operation And Maintenance Manual

SECTION 4
OPERATION
• 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-100208 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 PV-100208 will transition to Sleeping.
To exit the Manual Current mode the user must manually command the PV-100208 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-100208 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-100208
will transition to Power Tracking.
If the PV power drops below the PV power stop setpoint (PV P Stop) the PV-100208 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-100208 will transition to Sleeping
DOCUMENT: 151700
Figure 4-3
PV-100208 State Machine
PV-100208 Photovoltaic Inverter
Operation and Maintenance Manual
Copyright 2003, Xantrex Technology Inc.
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