MultiPlus-II 2x120V 4.5. Optional Connections A number of optional connections are possible: 4.5.1. Remote Control The product can be remotely controlled in two ways. With an external switch connected to the "Remote on/off connector" terminal (see Appendix A). Operates only if the switch on the inverter/charger is set to “on”. With a Digital Multi Control panel connected to one of the two VE.Bus RJ45 sockets (see Appendix A). Operates only if the switch on the inverter/charger is set to “on”. See Appendix A for the location of the connector. 4.5.2. Programmable relay The product is equipped with a programmable relay.
The relay can be programmed for all kinds of other applications however, for example as a starter relay for a generator. See Appendix A for the location of the connector. 4.5.3. Programmable I/O ports The product is equipped with 2 analogue/digital input/output ports. These ports can be used for several purposes. One application is communication with the BMS of a lithium-ion battery. See Appendix A for the location of the connector. 4.5.4. Starter battery The 12 and 24V models have a connection for charging a starter battery. Output current is limited to 4A. See Appendix A for the location of the connector. 4.5.5.
Voltage sense For compensating possible cable losses during charging, two sense wires can be connected with which the voltage directly on the battery or on the positive and negative distribution points can be measured. Use wire with a cross-section of 0.75mmІ (AWG 18). During battery charging, the inverter/charger will compensate the voltage drop over the DC cables up to a maximum of 1 Volt (i.e. 1V over the positive connection and 1V over the negative connection). If the voltage drop threatens to become larger than 1V, the charging current is limited in such a way that the voltage drop remains limited to 1V. See Appendix A for the location of the connector. 4.5.6.
Temperature sensor For temperature-compensated charging, a temperature sensor can be connected. The sensor is isolated and must be fitted to the negative terminal of the battery. The temperature sensor is not supplied with 48V models. It can be ordered separately. Order number: ASS000001000 See Appendix A for the location of the connector. 4.5.7. Parallel connection Up to six identical units, can be connected in parallel. When connecting inverter/charger units in parallel, the following requirements must be met: All units must be connected to the same battery. A maximum of six units can be connected in parallel. Only identical devices may be connected in parallel.
The DC connection cables to the devices must be of equal length and cross-section. Page 14 Installation