SERVICE MANUAL
Axpert VM II-5000
and VM II-3000
3
1. General information
1.1 Getting start
This manual is used as a checking and repairing guide for Axpert VMII-5000 and VMII-3000.
Before read this manual, it’s better to have some electrical or electronic background
knowledge. With this guide, you can fix the inverter by yourself firstly.
There are five main parts of this guide:
General information:
This part is the basic information of the inverter; you can start to know
the inverter from this chapter.
Troubleshooting:
This part will tell you how to do when you face a problem.
Checking and measuring guide:
This part will teach you how to check or repair the inverter
by measuring the critical components.
Assembling guide:
This part teaches you how to take the board outside and fix the new one.
Cables connection guide:
This part will present the signal cables connection of the inverters.
1.2 Basic topology introduction
The topology of the inverter shows as below:
Compare with UPS or normal inverter, INVERTER combines a solar charger inside. Solar
charger can be a supplement for battery when there is not grid or for saving energy purpose.
And with the solar charger, the inverter can have more working modes than UPS. For detail
information please refer to our user manual.
1.3 Inverter family
This service manual includes different models of the inverter, the table as below contains some important
parameters with different models.
These models names are only neutral names; please match the real model name of your inverter to the
model name in the table by comparing the typical characteristics.
Model name
Power rating
Charger type
Charger number
Axpert VMII-5000
5KVA
MPPT
1
Axpert VMII-3000
3KVA
MPPT
1