This site is now in read-only archive mode. Please move all discussion, and create a new account at the new Victron Community site.
I use a 12/2500/120 multiplus inverter. It's connected with a 110 ah starter batterie and a 800ah bank. Both have a voltage sense connection to the multiplus. At the sense connector pins I messure with my multimeter up to 16V. That is much too high. When I connect the multiplus vie mk2 dingle with my computer, the multiplus reports a Voltage of round about 14.4V. Has anyone an idea what can cause this failure? It will toast my batteries...
First of all check the voltage reading on the V-Sense at the inverter. it should be reading the battery voltage.
then check the output voltage coming out of the multiplus At the multi plus
the reading you are seeing on the MK2 is the reading at the V-sense connection, if this is not correct then the multiplus may overcharge or undercharge the batteries
NOTE you can only use ONE battery bank as the voltage sense, do not connect two different battery banks at the same time. to this connection.
Hello Paul,
thanks for your answer. The Voltage at the Sense connection is the same as at the batteries, and it´s much to high. The reading of the MK2 is 1-2V less than the voltage at the connector.
So the multiplus definitley overcharge the batteries.
I programmed now a voltage limit of 12,4 in the multiplus, so in reality it goes max to 14.6V.
At the multiplus 2500 are 2 sense-connections. one for house batterie and one for engine batterie, so are you sure i only have to connect one bank? And by the way, both messuring senses are wrong.
Can you make a picture of the connections in your Multi?
Can't open the box now, the baby is sleeping. But I connected exactly like in the manual. And I can messure exact the battery voltage at the sense connectors. About 14V. And the VE Connect with MK2 says 12.x V.
