Hallo zusammen,
ich habe mir ein Speicher-Setup aus MP2 + 2xLiTime 48v 100Ah gebaut (BMS je Rack, kein CAN). Eigentlich ziemlich einfach dachte ich mir.
Der MP2 ist in ESS Modus. MPPT habe ich nicht. Geladen wird über AC-in, wenn PV-Überschuss da ist (WR ist Fronius Symo 12,5)
Mein Problem - wenn die Akkus geladen sind, nach der Absorption-Phase, wechselt der MP2 in Abstand von 2-5 Sekunden zwischen Float und Entladen. Ist das normal? Hier kurzes Video von der WebConsole (link wird vom Forum rausgeschmissen).
Mein MP2 Setup habe ich unten kopiert.
Vielen Dank vorab.
TAB: General
System frequency 50Hz
Shore current 10.0 A
Overruled by remote checked
Dynamic current limiter unchecked
External current sensor connected (see manual) unchecked
State of charge when Bulk finished 95.0 %
Battery capacity 200 Ah
Charge efficiency 0.95
TAB: Grid
Country / grid code standard Germany: VDE-AR-N 4105:2018-11, internal NS protection
AC input 1 Above selected gridcode plus LOM B (compliant)
rise-in-voltage protection U> 253.0 V
start network service HF treshold 50.20 Hz
P(f>) droop 5.00 %
Use Aux1 as disable FeedIn signal checked
Maximum AC current for charge or feed in 100.0 %
Reactive power regulation Use a fixed Cos Phi
Filter time for reactive power 3.3 s
Cos phi at point 1 1.00
TAB: Inverter
PowerAssist unchecked
Inverter output voltage 230 V
Inverter DC shut-down voltage 40.50 V
Inverter DC restart voltage 45.00 V
Low DC alarm level 43.50 V
Do not restart after short-circuit (VDE 2510-2 safety) unchecked
enable AES unchecked
TAB: Charger
Enable charger checked
Weak AC input unchecked
Stop after excessive bulk unchecked
Lithium batteries checked
Configured for VE.Bus BMS unchecked
Charge curve Fixed
Absorption voltage 54.00 V
Float voltage 51.00 V
Charge current 20 A
Repeated absorption time 1.00 Hr
Repeated absorption interval 7.00 Days
Absorption time 1 Hr
TAB: Virtual switch
TAB: Usage
Virtual switch usage Do not use VS
TAB: Assistants
TAB: Assistant Configuration
ESS (Energy Storage System) (size:978)
*) System uses LiFePo4 with other type BMS
(This can be either a BMS connected via CAN bus or a BMS system in which the
batteries are protected from high/low cell voltages by external equipment.)
*) The battery capacity of the system is 200 Ah.
*) Sustain voltage 49.00 V.
*) Cut off voltage for a discharge current of:
0.005 C= 46.00 V
0.25 C= 46.00 V
0.7 C= 46.00 V
2 C= 46.00 V
*) Inverting is allowed again when voltage rises 1.20 V above cut-off(0).
*) Relevant VEConfigure settings:
- Battery capacity 200 Ah.
- PowerAssist unchecked
- Lithium batteries checked
- Dynamic current limiter unchecked
- Storage mode unchecked
Hab dummerweise die Einstellungen für Pylontech kopiert und sie sind für 16s.
