Grape Solar 40A PWM controller
Hi all, Decided it's time to get into solar! Got a Grape Solar 40A PWM controller and a single 100W panel for starters. My batteries are 2 Trojan T105s. Have some questions about setting up the ...
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temp compensation is negative 3 even though it shows as non negative.
page 9 of the manual shows it is -3.0mV/degreeC/2v(cell)
http://www.grapesolar.com/docs/GS-PWM-40BT%20manual.pdf
"Trojan recommends using the following: For every 1º F below 77º F add 0.0028 volts per cell or for every 1 C below 25º C add 0.005 volts per cell to the charger voltage setting."
For every 1º F above 77º F subtract 0.0028 volts per cell or for every 1º C above 25º C subtract 0.005 volts per cell to the charger voltage setting.
based on that the correct setting is 5
page 9 of the manual shows it is -3.0mV/degreeC/2v(cell)
http://www.grapesolar.com/docs/GS-PWM-40BT%20manual.pdf
"Trojan recommends using the following: For every 1º F below 77º F add 0.0028 volts per cell or for every 1 C below 25º C add 0.005 volts per cell to the charger voltage setting."
For every 1º F above 77º F subtract 0.0028 volts per cell or for every 1º C above 25º C subtract 0.005 volts per cell to the charger voltage setting.
based on that the correct setting is 5
