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Mppsolar Inverter - Re discharge voltage issue
#1
can someone confirm that, despite of re discharge voltage value (in my case 53V, program 13) these inverters restart only when battery is fully charged?
Low voltage cut off 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?
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#2
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.
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#3
(07-09-2019, 11:55 AM)daromer Wrote: 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.

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.
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#4
My 2424LV Turns back on when I set it
******Hi My name is Jason and I have SOCD (Solar Obsessive Compulsive Disorder)*******
Current Powerwall - 1400 Cells 7s200p (modular 40p packs) ~ 12kWh of storage     4x 315W Canadian Solar Panels

Working on the next 7s40p packs     ~2.5kWh

Waiting on 2000 Cells of unused Sony vt4 (2000mah 30A) ~ 15kWh      hehehehehe  More Power
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#5
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.
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#6
(07-09-2019, 01:15 PM)jdeadman Wrote: My 2424LV Turns back on when I set it

What’s your program 1 selection?

(07-09-2019, 01:21 PM)stevelectric Wrote: 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.
Perfectly understand what you say about program 12 and 13 but can’t imagine an off grid inverter with no point back voltage activation.

Ps: where you found the High DC Recovery Voltage?
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#7
(07-09-2019, 02:21 PM)iomagico Wrote: Ps: where you found the High DC Recovery Voltage?

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#8
But thats for High DC and not low DC. 2 different scenarios. High is for protection for internal components basically.
The Ultimate DIY Solar and build place
YouTube / Forum system setup / My webpage  Diy Tech & Repairs

Current: 10kW Mpp Hybrid | 4kW PIP4048 | 2x PCM60x | 83kWh LiFePo4 | 10kWh 14s 18650 |  66*260W Poly
Upcoming: 14S 18650~30kWh | Automatic trip breakers, and alot more
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#9
@Daromer, you are right! I must be mistaken here, this is something different.
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#10
(07-09-2019, 02:21 PM)iomagico Wrote:
(07-09-2019, 01:15 PM)jdeadman Wrote: My 2424LV Turns back on when I set it

What’s your program 1 selection?

(07-09-2019, 01:21 PM)stevelectric Wrote: 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.
Perfectly understand what you say about program 12 and 13 but can’t imagine an off grid inverter with no point back voltage activation.

Ps: where you found the High DC Recovery Voltage?
I'll check when I get home
iomagico likes this post
******Hi My name is Jason and I have SOCD (Solar Obsessive Compulsive Disorder)*******
Current Powerwall - 1400 Cells 7s200p (modular 40p packs) ~ 12kWh of storage     4x 315W Canadian Solar Panels

Working on the next 7s40p packs     ~2.5kWh

Waiting on 2000 Cells of unused Sony vt4 (2000mah 30A) ~ 15kWh      hehehehehe  More Power
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