This topic is for the PIP-5048GE inverter (also called the Axpert VM II), the PIP-5048GK (Axpert VM III), PIP-5048MG (Axpert MKS II), PIP-4048GE, and related models. 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.
We're trying to keep the PIP-4048MS and PIP-5048MS topic to a reasonable size; it's already over 100 pages (2500 posts).
Other model numbers:
SOL-I-AX-5NB (Mecer; equivalent to Axpert MKS II)
- 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.
- We are not aware of any patched firmware for these models. Firmware is not interchangeable with other models.
Warning! It is possible to brick these machines by attempting to flash them with firmware intended for the PIP-4048MS and similar inverters (e.g. versions 72.70 or 73.00, or patched versions of these).
[ Edit: Index updated to use [indent] tags. ]
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.