Outback FM80 User Manual

Operation
26 900-0009-01-00 Rev D
Sys Error
This indicates an internal non-volatile memory error. The unit will stop operating when this
message is displayed. Support may be required.
Tracking
In Tracking mode, the FLEXmax is doing an initial tracking of the panel voltage from V
oc
towards battery voltage after wakeup. This is also displayed when the controller transitions from
a target set point (Absorbing, Floating, or EQ) to the MPPT state (MPPT Bulk, MPPT Float,
or MPPT EQ).
Unloaded
The battery terminals have become disconnected. This may mean that the battery circuit
breaker breaker has tripped. It can also appear if the nominal battery voltage is set too low.
Wakeup
As the PV open circuit voltage (V
oc
) rises above the battery system voltage by two volts,
the FLEXmax prepares to deliver power to the batteries, although it does not perform MPPT
in this mode. During this period (initial tracking), the FLEXmax is calculating the PWM duty
cycles, turning on power supply voltages in the proper sequences, and making internal
calibrations. It also measures a new V
oc
at this time. In Wakeup, the daily statistics of a
single FLEXmax (amp-hours, kilowatt-hours, etc.), will accumulate into the total statistics.
The daily statistics and the end-of-day summary will clear, and the controller will begin logging
a new “day”. A FLEXmax combined with a HUB and a MATE-class system display will log this
information at midnight. In a MATE3-class system display, the data logging will occur at the
interval scheduled in the data logging parameters.
Zzzzz...
The FLEXmax will display Zzzzz... after 3 hours of continuous Sleeping. This transition
indicates that the controller recognizes it is night. It will perform Wakeup when voltage is
available (see above).