Table of Contents
1. IMPORTANT SAFETY INSTRUCTIONS - Save these instructions! .......................................................... 1
2. Description ............................................................................................................................ 2
2.1. Boats, vehicles and other stand-alone applications ..................................................................... 2
2.2. On-grid and off-grid systems combined with PV ......................................................................... 2
2.3. Battery charger .............................................................................................................. 3
2.3.1. Lead-acid batteries ................................................................................................ 3
2.3.2. Li-ion batteries ..................................................................................................... 3
2.3.3. Other Li-ion batteries ............................................................................................. 3
2.3.4. More on batteries and battery charging ......................................................................... 4
2.4. ESS – Energy Storage Systems: feeding energy back into the grid ................................................... 4
3. Operation .............................................................................................................................. 5
3.1. On/Off/Charger Only Switch ................................................................................................ 5
3.2. Remote control .............................................................................................................. 5
3.3. Equalisation and forced absorption ........................................................................................ 5
3.3.1. Equalisation ........................................................................................................ 5
3.3.2. Forced absorption ................................................................................................. 5
3.3.3. Activating equalisation or forced absorption ................................................................... 5
3.4. LED Indications .............................................................................................................. 6
4. Installation ........................................................................................................................... 10
4.1. Location .................................................................................................................... 10
4.2. Connection of battery cables ............................................................................................. 11
4.3. Connection of the AC cabling ............................................................................................ 13
4.4. Optional Connections ..................................................................................................... 14
4.4.1. Remote Control .................................................................................................. 14
4.4.2. Programmable relay ............................................................................................ 14
4.4.3. Programmable analog/digital input/output ports ............................................................. 14
4.4.4. Voltage sense (connection terminal J, see appendix A) .................................................... 14
4.4.5. Temperature sensor (connection terminal J, see appendix A) ............................................. 14
4.4.6. Parallel Connection ............................................................................................. 14
4.4.7. Split-phase and three-phase operation ....................................................................... 14
5. Configuration ....................................................................................................................... 16
5.1. Standard settings: ready for use ......................................................................................... 16
5.2. Explanation of settings .................................................................................................... 16
5.3. Configuring the MultiPlus-II ............................................................................................... 19
5.3.1. VE.Bus Quick Configure Setup ................................................................................ 19
5.3.2. VE.Bus System Configurator .................................................................................. 19
5.3.3. VEConfigure ..................................................................................................... 19
5.3.4. VictronConnect .................................................................................................. 19
6. Maintenance ......................................................................................................................... 20
7. Error Indications ................................................................................................................... 21
7.1. General error indications ................................................................................................. 21
7.2. Special LED indications ................................................................................................... 22
7.3. VE.Bus LED indications .................................................................................................. 23
7.3.1. VE.Bus OK codes ............................................................................................... 23
7.3.2. VE.Bus error codes ............................................................................................. 23
8. Technical Specifications .......................................................................................................... 26
A. APPENDIX A: Connection overview ............................................................................................ 28
B. APPENDIX B: Block diagram .................................................................................................... 30
C. APPENDIX C: Parallel connection .............................................................................................. 31
MultiPlus-II 48V 3kVA 120V