Alpha Group OutBack Power FLEXmax Extreme Series, Owner'S Manual

Page: 30 / 84

Operation
28
900-0150-01-00 Rev A
Silent
The MATE3 displays the operating mode as Silent if the charge controller has stopped charging. This message
represents a variety of conditions, many of which are common. For example, Silent is shown at night or any
period of insufficient light. Table 4 lists the indicators and the PV open-circuit voltage which show specific Silent
conditions. In these cases, no indicators will be illuminated.
However, Silent may also appear in the event of an error shutdown. If the mode is Silent and the red Fault
indicator is illuminated, an External Fault may have occurred. See pages 19, 20, and 61.
Figure 25 LED Indicators (Fault)
Table 4 Reasons for Silent Mode
Charge LED Status LED Fault LED V
oc
Other
No No No
Below battery
No PV energy or “Sleep” mode. If the V
oc
is less than
battery voltage, the controller is “sleeping”. This is
normal at night. The threshold for Sleep mode is
settable. See page 37.
Above battery
Low light or “Snooze” mode. V
oc
is greater than battery
voltage but not enough array current is available for
charging. This is normal in the morning, evening, or in
heavy clouds (low light). The threshold for Snooze
mode is settable. See page 37.
Intermittent Any No Above battery
“Wakeup” mode. The controller has detected more than
the required 10 watts, but has not yet begun charging.
This condition only lasts a short time. The blue Charge
indicator may turn on and off briefly while the controller
is performing initial power tracking. This can also occur
if PV conditions change and the controller has to
calculate a new power point.
If continuous, this behavior may also indicate an
“unloaded output” condition where the batteries have
been disconnected from the charge controller.
Red (solid)