I recently upgraded the firmware (v552) of my MultiPlus-II 12/3000/120-50 120v (2705) and now it will not charge my batteries. They drained to shut off point (below 10v), once the sun came up this morning my solar started to charge them, but the MultiPlus-II is only in Float mode. I just use a 15a 120v shore power connection but it never goes into bulk mode like the MPPT 100/50, or as it used to before the upgrade. I have no way to access (MacBook only, no windows PC) the internal settings of the MultiPlus and do not know what would have changed to make this not work anymore. Any idea’s?
I can access to download VEConfigure file (via the VRM Portal) on the MultiPlus but have no way to look or change it to fix what is broken, can anyone help?
How did you go about updating the firmware. There are usually lots of warnings and a step by step process. The manuals state quite clearly that the firmware leaves the charger disabled. Done right the update process asks you to save the settings file, update the firmware then reload the settings file.
Extract from the remote update manual, which probably explains why your batteries have not charged.
After the firmware update is completed, the inverter is switched on again. The settings will have been reset to their defaults. And, to prevent overcharging, all charge voltages have been set to the nominal battery voltage, being 12V, 24V or 48V. This effectively disables the charger.
Thanks for the reply.
I did as I normally do, get myself in trouble by not reading throughly. I thought it was going to download a copy before it started. But now I see it was telling ME to download one prior. I was on VRM on my phone when I did this upgrade. I was upgrading all my Victron equipment at the time, in prep to switching my batteries out for the new SOK 12v314ah x3. My system is basic but that is not to say it could be the default settings for the MultiPlus-II. Is there anything I can do to fix this now, after the fact?
AbigailVanLife_c0619ab450b4_inst_ttyS4_Interfaces_Mk2_Tunnel (1).rvsc (4.4 KB)
Oh, I should add, I only have a Mac Book Pro, with no access to a Windows PC. So, no way to use VEConfigure to look at the settings via the .RVCS file.
I will see if I can update the file for you in an hours time when I am free and post it back here.
Was that file downloaded after the firmware update.
after
If you remote update VE Bus firmware by VRM you always need to use VE configure to convert the settings file you download before the firmware update before uploading it back up.
www.victronenergy.com/live/venus-os:remote_ve.bus_firmware_updates
Can I use VictronConnect on my MacBook with a USB Dongle to check out the settings for my Batteries and fix them If that is what is incorrect?
Or, Is my only choice to use VEConfigure tool for Windows with the .RVSC file?
Try it, I am not 100% sure. I know VictronConnect on an android phone would work via a mk3 USB.
@dbrownell I have had a look at the file, everything seems to be set up OK but as the documentation says, the charging voltages, both float and absorption had been set to 12.0V. I do not know what your batteries are, the attached file has been set to 14.4V absorption and 13.5V float, this will get you by. If you need another tweak on the settings let me know.
AbigailVanLife_c0619ab450b4_inst_ttyS4_Interfaces_Mk2_Tunnel (1).rvsc (4.4 KB)
TAB: General
System frequency 60Hz
Shore current 12.0 A
Overruled by remote checked
Dynamic current limiter unchecked
External current sensor connected (see manual) unchecked
TAB: Grid
Country / grid code standard None: (feeding energy from DC to grid not allowed)
Accept wide input frequency range (45-65 Hz) checked
AC low switch mains off 90 V
AC low switch mains on 97 V
AC high switch mains on 135 V
AC high switch mains off 140 V
UPS function checked
TAB: Inverter
PowerAssist checked
Assist current boost factor 2.0
Inverter output voltage 120 V
Ground relay checked
Inverter DC shut-down voltage 9.30 V
Inverter DC restart voltage 10.90 V
Low DC alarm level 10.90 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 unchecked
Disable VSense (for diagnostic purposes) unchecked
Storage mode checked
Use equalization (tubular plate traction battery curve) unchecked
Charge curve Adaptive + BatterySafe
Absorption voltage 14.40 V
Float voltage 13.50 V
Charge current 120 A
Repeated absorption time 1.00 Hr
Repeated absorption interval 7.00 Days
Maximum absorption time 8 Hr
Temperature compensation -16.2 mV/deg
TAB: Virtual switch
TAB: Usage
Invert virtual switch usage checked
Virtual switch usage drive multifunctional (aux.) relay: VS on=open; VS off=close
TAB: A: Set VS ON
“High power limit” VS on delay -1 seconds
“Low DC level” VS on delay -1 seconds
“High DC level” VS on delay -1 seconds
“Not charging” VS on delay -1 seconds
“Fan on” VS on delay -1 seconds
set VS on when bulk protection is activated unchecked
set VS on when general system failure occurs unchecked
“Temperature pre-alarm” VS on delay 1 seconds
“Low-battery pre-alarm” VS on delay 1 seconds
“Overload pre-alarm” VS on delay 1 seconds
“Udc ripple pre-alarm” VS on delay 1 seconds
TAB: B: Set VS OFF
“Low power limit” VS off delay -1 seconds
“Low DC level” VS off delay -1 seconds
“High DC level” VS off delay -1 seconds
“Charging” VS off delay -1 seconds
“Fan off” VS off delay -1 seconds
“Bulk finished” VS off delay -1 minutes
“No VS on” VS off delay 0 minutes
“No AC input” VS off delay -1 seconds
“Temperature pre-alarm” VS off delay -1 seconds
“Low-battery pre-alarm” VS off delay -1 seconds
“Overload pre-alarm” VS off delay -1 seconds
“Udc ripple pre-alarm” VS off delay -1 seconds
TAB: VS options
Minimum VS on time 0 minutes
Change inverter period time when virtual switch is on unchecked
Change inverter period time on Udc unchecked
TAB: Advanced
limit internal charger to prioritize other energy sources unchecked
Thank you, I’ll look up my battery settings in the morning and get back with you. Really appreciate you.
I’m using SOK 12v batteries and just looked them up. Here is what values they show.
- Absorption Voltage: 14.6v
- Float Voltage: 13.8v
Do I need the “Lithium batteries” checked, as i’m using them?
Yes, lithium needs to be checked to stop temperature compensation. Also do they specify an absorption time as Victron default is 1 hours and that is the minimum that it can be set at.
Here is a file with the lithium charge profile, absorption = 14.6V, float = 13.8V, absorption time = 1hr, no temperature compensation, no storage voltage.
AbigailVanLife_c0619ab450b4_inst_ttyS4_Interfaces_Mk2_Tunnel (Li).rvsc (4.4 KB)
This is the second case of this in 3 days.
I am adding to the post in case anyone finds this before updating the firmware via VRM.
Read the instructions at.
https://www.victronenergy.com/live/venus-os:remote_ve.bus_firmware_updates
You need VE Configure running on Windows. During the update via VRM the settings are downloaded automatically. The downloaded file
Then needs to be opened in VE Configure, converted, checked and reuploaded.
Extract from the manual.
After the firmware update is completed, the inverter is switched on again. The settings will have been reset to their defaults. And, to prevent overcharging, all charge voltages have been set to the nominal battery voltage, being 12V, 24V or 48V. This effectively disables the charger.
Thanks to @M_Lange for confirming the correct sequence.
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