Product Manual

The "Low temperature cut-off" feature is only active when the solar charger is part of a VE.Smart Network and
is receiving a battery temperature reading from a BatterySense or a battery monitor with temperature sensor.
The "low temperature cut-off" setting is by default disabled. When enabled, a low cut off temperature can be set. The default
temperature is 5°C, this is a suitable temperature setting for lithium iron phosphate (LFP) batteries. However, always check with
the lithium battery supplier to find out what this temperature should be set at.
The "low temperature cut-off" mechanism will stop battery charging when the battery temperature has dropped below the low
temperature cut-off setting. Battery charging will resume once the battery temperature has risen 0.5°C above the low temperature
cut-off setting.
5.2.2. Load output settings
The load output settings be used to drive the TX pin in the VE.Direct port, which can then be used to drive a BatteryProtect, a
relay or an other load-shedding device. For more information see chapter TX port settings [27].
The available operation modes are:
• Always off
The load output is always OFF
• BatteryLife algorithm:
This is a self adapting algorithm to maximize life of the battery. For more information see chapter ???
• Conventional algorithm 1:
12V system: OFF when Vbatt < 11.1V, ON when Vbatt > 13.1V
24V system: OFF when Vbatt < 22.2V, ON when Vbatt > 26.2V
48V system: OFF when Vbatt < 44.4V, ON when Vbatt > 52.4V
• Conventional algorithm 2:
12V system: OFF when Vbatt < 11.8V, ON when Vbatt > 14.0V
24V system: OFF when Vbatt < 23.6V, ON when Vbatt > 28.0V
48V system: OFF when Vbatt < 47.4V, ON when Vbatt > 56.0V
• Always on:
The load output is always ON
• User defined algorithm 1:
OFF when Vbatt < Vlow, ON when Vbatt > Vhigh.
• User defined algorithm 2:
OFF when Vbatt < Vlow or Vbatt > Vhigh and ON when Vbatt is between Vlow and Vhigh.
• Automatic Energy Selector:
OFF when Vbatt < Vlow. And ON when Vbatt > Vhigh.
When conditions are met Load will be on for a pre-selected time.
The "always off" and the "always on" modes will respond immediately. The other modes have a 2 minute delay before the load
output changes. This is so that the solar charger does not respond too quickly when, for example, an inrush current briefly lowers
the battery voltage below the threshold.
MPPT solar charger manual
Page 22 Configuration and settings