Alpha Group OutBack Power FLEXmax Series Owner's Manual page 30

Operation
Mode Name
Error Output
Function:
When the voltage decreases below the
threshold voltage for 10 minutes or more, the
AUX output will change state.
Purpose:
This mode is useful for monitoring remote sites.
It is intended to signal when the charge
controller has not charged the batteries for 26
hours or more or if the battery voltage has fallen
below the threshold voltage for more than 10
minutes.
When set as Active Low, it can activate an alarm
by sending a signal through a modem to a
computer to alert the operator of the problem.
Night Light
Function:
When the voltage drops below the threshold
voltage set point for the amount of time set in
the Hysteresis time, the AUX output changes
states and remains in that state for the amount
of time set for the ON time.
Purpose:
This mode is intended to illuminate a
user-provided, low wattage light for as long as
the charge controller remains in Sleep mode or
for the ON time set by the user.
Float
Function:
When the FLEXmax is in the Float stage, the
output activates to power a load.
Purpose:
This mode is intended to power a load when the
FLEXmax is in the Float stage of charging the
batteries.
Diversion: Function:
Relay
When the battery voltage exceeds the threshold
voltage, the AUX output changes state. Often
used with wind or hydroelectric sources.
Purpose:
This mode is intended to divert power from the
batteries to prevent overcharging by activating
a diversion load at the appropriate time.
Diversion: Solid
Function:
St
When the battery voltage exceeds the threshold
voltage, the AUX output goes into pulse-width
modulation at a rate of 200 Hz. Often used with
wind or hydroelectric sources.
Purpose:
This mode is intended to divert power from the
batteries to prevent overcharging by operating
a diversion load at the appropriate PWM level.
Recommended for use with a solid-state relay
for fast and precise load control.
28
Table 2 Aux Mode Functions
Function/Purpose Set Points Aux Polarity
 Threshold
Not Available
Voltage
 Threshold
Active High: Activates for a
voltage set amount of time when the
voltage drops below the
 ON Time
threshold for a set amount
 Hysteresis
of time.
Time
Active Low: Deactivates for a
set amount of time when the
voltage drops below the
threshold for a set amount of
time.
None Not Available
 Threshold
Active High: Controls an
Voltage auxiliary load to divert power
away from the batteries when
 Time
a wind or hydroelectric turbine
is connected directly to the
batteries.
Active Low: Deactivates an
auxiliary load to stop diverting
from batteries.
 Threshold
Not Available
Voltage
 Time
C
900-0009-01-00 Rev