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Without this hysteresis the PROsine might continually transfer between invert and
charge mode as the shorepower voltage goes up and down a small amount. This
concept is applied to the following:
• Invert Low Voltage Shutdown Hysteresis: 2.5V, if the unit stopped inverting
due to low battery voltage, it will not restart until the battery voltage has
increased to 2.5V above the Invert Low Voltage Shutdown level.
NOTE, this hysteresis is adjustable, see Chapter 4, “Configuration”
• Over/under Temperature Hysteresis: 10°C, if the unit shuts down due to over
or under temperature (at the battery or internal to the unit) then it will not
automatically restart until the temperature has decreased or increased by 10°C
(that is, moved 10°C into the allowable range).
Note that, in general, the unit will not automatically restart unless the "Restart
After Error" option has been configured to YES. Also, the effect of the hysteresis
can be cancelled by turning the unit off and back on, if the parameter is within
range the unit will restart.
For example if the unit transferred (opened the AC input relay) due to the
shorepower voltage dropping below 90Vac and then the voltage rises to 95V the
unit will not automatically transfer back to shorepower. Turn the unit off briefly
and back on and it will accept the 95V shorepower and transfer.