This topic is for the the PIP-5048GE, PIP-5048GK and PIP-5048MG inverters (also called the Axpert VM II 5000-48, Axpert VM III 5000-48 and Axpert MKS II 5K respectively) and the obsolete PIP-4048GE. These all feature a solar charge controller (SCC) or maximum power point tracker (MPPT) with a higher input voltage range (typically 120 V to 450 V DC).
We say the SCC is unsafe because it necessarily uses a lethal PV array voltage, but it doesn't have insulation monitoring.
Other model numbers:
Mecer (rhymes with "spacer") SOL-I-AX-5NB (equivalent to Axpert MKS II 5K and PIP-5048MG)
SPC II-M 5000-48 (equivalent to Axpert MKS II 5K and PIP-5048MG)
SPC III 5000W (equivalent to Axpert VM III 5000-48 and PIP-5048GK)
There are other topics for the
PIP-4048MS and PIP-5048MS inverters (also called the Axpert MKS 5K), and for the
PIP-5048MK inverter (also called the Axpert King 5K), and for
PIP inverter repairs and hardware modifications, and for the
Voltronic InfiniSolar inverters.
MPP Solar's PIP-GE (PF1.0) user manual.
MPP Solar's PIP-GK (PF1.0) user manual.
MPP Solar's PIP-MG (PF1.0) user manual.
Weber's Analysis of the PIP-4048GE with its high voltage MPPT.
Factory firmware version 71.71 for PIP-5048MG / Axpert MKS II 5K-48. This is supposed to fix the PV dips and freezes problem, though we're not aware of any users that have confirmed this.
Factory firmware version 71.80 for PIP-5048MG / Axpert MKS II 5K-48 (not to be confused with PIP-5048MK / Axpert King firmware with the same version number).
Lightly patched firmware version 71.80a for PIP-5048MG / Axpert MKS II 5K-48.
Warning! It is possible to brick these machines by attempting to flash them with firmware intended for other models, such as the PIP-4048MS or PIP-5048MS (e.g. versions 72.70 or 73.00, or patched versions of these).
- Sending long commands via USB on embedded platform: first post, the variable length PE command, and final resolution.
Performance / problems
- The issue with wet panels and fault code 08 (error 08: bus voltage too high), and its resolution. Also an earlier discussion.
END MODERATOR NOTES
[Post by rayellam]
Ive been following this thread for over a year now, im an electronics design engineer and appreciate all the input here from obviously very talented/knowledgeable members.
I purchased some a "clone" of a PIP-4048 from a company called CAP Solar around 14 months back, they advertised it as having MPPT charger but looking in the guts of the unit it's actually a PWM..................anyway all that aside. Im considering buying a GENUINE PIP-4048GE inverter from MPP Solar.
There has been a lot of pointers to unreliability problems with the DC side bus on the old 4048. The PIP-4048GE obviously has a very different DC side design as it allows a solar input voltage of 150 to 450VDC. Has any one with electronics knowledge done a tear down on this unit? how is the reliability? is it better than the old units?
Any input would be VERY welcome.