I have hooked up a growatt SPF6000T DVM. This is connected to 2kW of panels on the PV input(90V when loaded), 2 banks of 48V 200Ah flooded golf cart batteries, and then I have the AC input connected to a Kohler 6kW generator with a 2-wire auto-start system.
The solar and battery charging portions are working excellent.
I am having 2 issues:
1. I can not change the low DC cut off voltage (setting 21). MAIN ISSUE
-This results in the inverter not cranking up the generator until the default 42 volts(Lower than I would like for my Flooded lead acid batts). I want to raise this to 46-48V. I am doing this because I only want the generator too kick on for an hour or so while we are asleep to run the air conditioner when the batteries run low.
2. The generator auto start function does not work how expect it too. When the batteries get to 42V the dry contact signal will connect the NO pair. This functions as expected. The issue is the NO lines will re-open as soon as the generator shows up to the inverter. This shuts off the generator and is creating a looping generator on/off which is not acceptable obviously haha
Settings Below:
1: SBU
2: 50A -- 400Ah/8 = 50A
3: APL
5: FLD
6: LTD
8: 230V -- Generator Outputs 230 @60Hz, Air conditioning rated for 230V
9: 60Hz
11: 30A -- Trying to slightly limit generator loading current for charging the Batts
12: 48.0V -- My understanding is this should override the 42V default of setting 21???
13: 54.0V -- From my understanding this should be where the generator cuts off(NO pair returns to open)
14: SNU
15:bON
16: LOf
17: AON
19: 58.4V
20: 54.0V
21: 42.0V -- CANT MODIFY, but seems to be overriding setting 12
22: 001
23: Dis
With these settings I can watch the batteries fall past 48.0V and drop all the way too 42.0V before the NO pair closes.
The solar and battery charging portions are working excellent.
I am having 2 issues:
1. I can not change the low DC cut off voltage (setting 21). MAIN ISSUE
-This results in the inverter not cranking up the generator until the default 42 volts(Lower than I would like for my Flooded lead acid batts). I want to raise this to 46-48V. I am doing this because I only want the generator too kick on for an hour or so while we are asleep to run the air conditioner when the batteries run low.
2. The generator auto start function does not work how expect it too. When the batteries get to 42V the dry contact signal will connect the NO pair. This functions as expected. The issue is the NO lines will re-open as soon as the generator shows up to the inverter. This shuts off the generator and is creating a looping generator on/off which is not acceptable obviously haha
Settings Below:
1: SBU
2: 50A -- 400Ah/8 = 50A
3: APL
5: FLD
6: LTD
8: 230V -- Generator Outputs 230 @60Hz, Air conditioning rated for 230V
9: 60Hz
11: 30A -- Trying to slightly limit generator loading current for charging the Batts
12: 48.0V -- My understanding is this should override the 42V default of setting 21???
13: 54.0V -- From my understanding this should be where the generator cuts off(NO pair returns to open)
14: SNU
15:bON
16: LOf
17: AON
19: 58.4V
20: 54.0V
21: 42.0V -- CANT MODIFY, but seems to be overriding setting 12
22: 001
23: Dis
With these settings I can watch the batteries fall past 48.0V and drop all the way too 42.0V before the NO pair closes.