Mppsolar Inverter - Re discharge voltage issue

I

iomagico

Member
Joined
Mar 23, 2018
Messages
43
can someone confirm that, despite of re dischargevoltage value (in my case53V,program 13) these inverters restartonly when battery is fully charged?
Low voltage cutoff function (48.8V)works as aspected but inverters wont restart till battery is fully charged (60V) again.
My system is totally off grid.

Same experience?
 
What inverter?

The one I have I set shut off voltage and re-engage voltage. So for insance Shut off at 48V and then reengage at 50V.
 
daromer said:
What inverter?

The one I have I set shut off voltage and re-engage voltage. So for insance Shut off at 48V and then reengage at 50V.
Click to expand...

I have 3 inverters PIP5048MG for a 3 phase system.
Shut off voltage is set to 48.8V and works.
Re-discharge voltage or re-engage voltage (function 13) is set to 53V but it doesn't work.

PS I have another 1 phase system (same inverter, PIP5048MG) with same behavior.
 
My 2424LV Turns back on when I set it
 
The re-discharge-voltage (13) corresponds to the recharge-voltage (12) and controls the bypass switch from battery to grid power. Imho there is no such corresponding setting for the low-dc-cutoff-voltage (29) which powers off the PIP completely. So I guess the behaviour you see is not configurable.

Edit: the manual lists a "High DC Recovery Voltage" being 58Vdc or 62Vdc in the specifications.
 
jdeadman said:
My 2424LV Turns back on when I set it
Click to expand...

Whats your program 1 selection?

stevelectric said:
The re-discharge-voltage (13) corresponds to the recharge-voltage (12) and controls the bypass switch from battery to grid power. Imho there is no such corresponding setting for the low-dc-cutoff-voltage (29) which powers off the PIP completely. So I guess the behaviour you see is not configurable.

Edit: the manual lists a "High DC Recovery Voltage" being 58Vdc or 62Vdc in the specifications.
Click to expand...
Perfectly understand what you say about program 12 and 13 but cant imagine an off grid inverter with no point back voltage activation.

Ps: where you found the High DC Recovery Voltage?
 
iomagico said:
Ps: where you found the High DC Recovery Voltage?
Click to expand...


image_woxoaf.jpg
 
But thats for High DC and not low DC. 2 different scenarios. High is for protection for internal components basically.
 
iomagico said:
jdeadman said:
My 2424LV Turns back on when I set it
Click to expand...

Whats your program 1 selection?

stevelectric said:
The re-discharge-voltage (13) corresponds to the recharge-voltage (12) and controls the bypass switch from battery to grid power. Imho there is no such corresponding setting for the low-dc-cutoff-voltage (29) which powers off the PIP completely. So I guess the behaviour you see is not configurable.

Edit: the manual lists a "High DC Recovery Voltage" being 58Vdc or 62Vdc in the specifications.
Click to expand...
Perfectly understand what you say about program 12 and 13 but cant imagine an off grid inverter with no point back voltage activation.

Ps: where you found the High DC Recovery Voltage?
Click to expand...

I'll check when I get home
 
My settings are
01 switches between Util and Abu depending on the time of day (set by solarpatrol)
02 110a
03 APL
04 nor
05 use
06 Lrd
07 TRD
08 120v
09 60hz
11 utl 30a
12 23v
13 28.0v
16 050
18 bon
19 rep
20 lof
22aon
23 bye
25 fen
26 cu 29.0v
27 flu 28.9v
28 51g
29 cou 22 0v
30 one
31 sbe
 
jdeadman said:
My settings are
01 switches between Util and Abu depending on the time of day (set by solarpatrol)
02 110a
03 APL
04 nor
05 use
06 Lrd
07 TRD
08 120v
09 60hz
11 utl 30a
12 23v
13 28.0v
16 050
18 bon
19 rep
20 lof
22aon
23 bye
25 fen
26 cu 29.0v
27 flu 28.9v
28 51g
29 cou 22 0v
30 one
31 sbe
Click to expand...

May you confirm your inverter is totally off grid, so no external AC connected?
My conclusion is that program 12 and 13 only manage the AC input (which I dont have) and only option to manage low battery voltage cut off and AC production restart seems the dry contact ports.
 
Oh sorry I missed that part. Mine is connected to the grid for charging purposes and bypass only
 
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