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Post by Tony on Aug 12, 2016 21:29:25 GMT -8
Hi All
I have a single 100 watt panel connected to a 30 amp pwm controller on a
Single 12v battery. I have seven 3 amp led outdoor lights
.
I set the controller to come on
At sunset and stay on for 4 hours.
It has been working for months with
No problems until last week.
No after being on for a few hours
the lights start turning off and on.
The time the lights stay off for
between 5 to 20 seconds then back on
For for a few seconds.
I checked all the connections and can see no Problems (short, overheating ect ect)
Bat voltage prior to start is 12.65v
Any ideas ?
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Post by ricks on Aug 13, 2016 5:34:15 GMT -8
is the batt voltage above the low voltage cutoff? is it recovering while off and coming back on?
id there any light on the panel so the controller believes it is before dusk?
I run 5x1watt landscape lights for 3 hrs/day, at first with used 7ah batt, lightning would turn them off, so would low voltage cutoff (old batteries), they would come back on. New 7ah has cycled daily for 11 months with no problems.
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Post by jsb2000 on Aug 13, 2016 5:44:58 GMT -8
I have a single 100 watt panel connected to a 30 amp pwm controllerIs it the Renogy supplied controller? If so, is it the LCD model or the CC model? I have seven 3 amp led outdoor lights So, drawing 21 Amps for 4 hours? If so, that's going to drain that single 12V battery pretty quickly. Bat voltage prior to start is 12.65v But what's the battery voltage after start? Does it sink quickly when the load is turned on? If so, then it's possible that you've been deep discharging that single battery and it can no longer hold a charge. The controller might be detecting the low capacity and cutting off the load...then the battery voltage comes back up and it reconnects it. And then the cycle repeats. Some suggestions: Monitor the battery voltage and current. Also monitor and verify that the load current is as expected. Perhaps one (or more) of the LED lights is drawing more current than expected and the total load current is approaching the limit of the controller. |
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Post by Admin on Aug 23, 2016 10:03:13 GMT -8
JSB made some very good points. Its possible the battery was able to power the lights for a couple of months but was over discharging on a daily basis. That would cause damage to the battery over time. What we would need to know is the batteries AMP Hour ratings to really be able to pinpoint this issue further. Please call us at 800-330-8678. one of our techs would be happy to troubleshoot that system.
-A.L.
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