The batteries are good. We are going to try some
custom settings. This CC works a bit differently
than most, and the problem may be in the duty
cycle, IE, how much time the pulses are on vs off.
At 04:36 PM 9/10/2015, you wrote:
Drake,
Quote: â...and goes right back to that voltage in the morning.â
How quickly does the battery voltage rise to
29.1 in the morning? If the batteries are
sulfated heavily, you may see a very fast rise
in voltage but you will also see a loss of
capacity. Batteries in the early stage of
sulfation may have a difficult time reaching the
constant voltage setpoint and remain in bulk charge continuously.
What is the size of the PV array and battery
bank? If the array is too small for the bank,
this is the time of year (less sun hours per
day) that we start to receive complaints about
the battery not getting charged.
Larry Crutcher
Starlight Solar Power Systems
On Sep 9, 2015, at 5:06 PM, Drake
<<mailto:[email protected]>[email protected]>
wrote:
Hello Wrenches,
I have a Morningstar PWM 45 that doesn't drop
out of absorb. It is set with dip switches to
absorb at 29.2 V and stays constant around 29.1.
It has stayed at 29.1 for several hours
straight, and goes right back to that voltage in
the morning. Tech support says the controller is
working correctly. Have any of you seen this, or
conversely have you seen the Morningstar drop
into float after a reasonable amount of time?
Thanks,
Drake
Drake Chamberlin
Athens Electric LLC
OH License 44810
CO License 3773
NABCEP Certified Solar PV
740-448-7328
<http://athens-electric.com/>http://athens-electric.com/
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