Outback Power Systems GS8048 manual Disconnect Messages, Voltage Maximum

Troubleshooting

Disconnect Messages

Disconnect messages explain the reason that the inverter rejected an AC source. The unit returns to inverting mode if turned on. This screen is viewed using the AC INPUT hot key on the MATE3. (See

the MATE3 manual for more instructions.) One or more messages will display Y (yes). If a message says N (no), it is not the cause of the disconnect. The MATE3 system display may generate a concurrent Event and Warning message following the disconnect. (See previous page.) If the AC source is removed, the Warning will be blank, but the cause of the last disconnect will remain.

Disconnect messages only display the reason for the disconnection; they cannot correct it. It is usually the result of external conditions, not an inverter fault. If the condition is corrected, the inverter will reconnect. A few settings can be changed to accommodate problems with the AC source.

The reasons shown in the Sell Status menu for ceasing to sell power (see next page) are not the same as disconnect messages, although they may be caused by the same circumstance. A grid-interactive unit can stop selling and still remain connected to the utility grid.

Table 5 Disconnect Troubleshooting

Message	Definition	Possible Remedy
Frequency Too High	The AC source has exceeded	Check AC source. If it is a generator, reduce speed.
	66 Hz.
Frequency Too Low	The AC source has dropped below	Check AC source. If it is a generator, increase speed.
	54 Hz.
Voltage > Maximum	The AC source has exceeded	Check AC source. The inverter’s acceptance range
	140 Vac (default value) on either	is adjustable.
	L1 or L2.	NOTE: Adjusting the range may accommodate a
		problematic AC source, but it will not fix it.
Voltage < Minimum	The AC source has dropped below	Check AC source. The inverter’s acceptance range
	108 Vac (default value) on either	is adjustable.
	L1 or L2.	NOTE: Adjusting the range may accommodate a
		problematic AC source, but it will not fix it.
Backfeed	Usually indicates another AC	Disconnect the AC OUT wires. Check the wires
	power source (out of phase with	(not the inverter) with an AC voltmeter. If an AC
	the inverter) was connected to the	source is present, shut it off. (This is more often
	unit’s AC output.	accompanied by an AC Output Backfeed error.)
	Can also occur if an out-of-phase	Check input source and wiring. This can be caused
	AC source is connected to the	by a source with phase problems. It can also be
	inverter’s AC input.	caused by transferring from one AC source to
		another before the inverter can synchronize itself.
Phase Lock	The unit cannot remain in phase	Check AC source. This can be caused by a
	with an erratic AC source.	generator with a poorly regulated output. Some
	NOTE: This is not an “Error” as	generators behave this way when running out of
		fuel. If necessary, set the Radian inverter to the
	defined on page 39 and is not
		Generator input mode. (See page 9.)
	accompanied by a shutdown.
Island Detect	The unit detects something other	Check all input circuit breakers for an open circuit.
	than normal grid conditions. This	This may (rarely) happen with a generator. If
	is usually the result of an open AC	necessary, set the inverter to the Generator input
	input circuit.	mode. (See page 9.)

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