Optional Connections - Victron energy MultiPlus 12/5000/200-100 230V Manual Del Usuario

4.4 Optional Connections

A number of optional connections are possible:
4.4.1 Second Battery
The MultiPlus has a connection for charging a starter battery. For connection see Appendix A.
4.4.2 Voltage Sense
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Tw o sense wires may be connected to compensate possible battery cable losses during charging. Use w ires of at least 0.75mm . For
connection see Appendix 0.
4.4.3 Tem perature Sensor
The temperature sensor supplied w ith the product may be used for temperature-compensated charging (see Appendix A). The sensor is
isolated and must be mounted on the batteries minus pole.
4.4.4 Rem ote Control
The product can be remotely controlled in tw o w ays.
- With an external sw itch (connection terminal L, see appendix A). Operates only if the sw itch on the MultiPlus unit is set to "on".
- With a Multi Control panel (connected to one of the tw o RJ48 sockets B, see appendix A). Operates only if the sw itch on the MultiPlus
is set to "on".
Only one remote control can be connected, i.e. either a switch or a remote control panel.
4.4.5. Programmable relay
The MultiPlus is equipped w ith a programmable relay that by default is set as an alarm relay. The relay can be programmed for all kinds
of other applications how ever, for example to start a generator (VEConfigure software needed).
4.4.6 Auxiliary AC output (AC-out-2)
Besides the usual uninterruptable output, a second output (AC-out-2) is available that disconnects its load in the event of battery
operation. Example: an electric boiler or air conditioner that is allow ed to operate only if the genset is running or shore pow er is
available.
In case of battery operation, AC-out-2 is sw itched off immediately. After the AC supply has become available, AC-out-2 is reconnected
w ith a delay of 2 minutes, this to allow a genset to stabilise prior to connecting a heavy load.
4.4.7 Parallel Connection
The MultiPlus can be connected in parallel w ith several identical devices. To this end, a connection is established betw een the devices
by means of standard RJ45 UTP cables. The system (one or more MultiPlus units plus optional control panel) w ill require subsequent
configuration (see Section 5).
In the event of connecting MultiPlus units in parallel, the follow ing requirements must be met:
- A maximum of six units connected in parallel (per phase).
- Only identical devices may be connected in parallel.
- The DC connection cables to the devices m ust be of equal length and cross-section.
- The AC input cables to each unit as w ell as the AC output cables to each unit must also be of equal length and cross-section (length to
AC input may be different from length to AC output).
Additionally the AC input and output cables to each unit should have a minimum resistance of 4 milliohm (in oder to prevent excessive
AC current unbalance betw een parallel units due to differeces of terminal and relay contact resistance).
As a result the minimum length of the AC input and output cables is as follow s:
Cable cross section 6 m m² (9 AWG): m in. length 0,7 m eter
Cable cross section 10 m m² (7 AWG): m in. length 1,2 m eter
- If a positive and a negative DC distribution point is used, the cross-section of the connection between the batteries and the DC
distribution point must at least equal the sum of the required cross-sections of the connections between the distribution point and the
MultiPlus units.
- Place the MultiPlus units close to each other, but allow at least 10 cm for ventilation purposes under, above and beside the units.
- UTP cables must be connected directly from one unit to the other (and to the remote panel). Connection/splitter boxes are not
permitted.
- A battery-temperature sensor need only be connected to one unit in the system. If the temperature of several batteries is to be
measured, you can also connect the sensors of other MultiPlus units in the system (w ith a maximum of one sensor per MultiPlus).
Temperature compensation during battery charging responds to the sensor indicating the highest temperature.
- Voltage sensing must be connected to the master (see Section 5.5.1.4).
- If more than three units are connected in parallel in one system, a dongle is required (see Section 5).
- Only one remote control means (panel or sw itch) can be connected to the system.
4.4.8 Three-phase operation
The MultiPlus can also be used in 3-phase configuration. To this end, a connection betw een the devices is made by means of standard
RJ45 UTP cables (the same as for parallel operation). The system (MultPlus units plus an optional control panel) w ill require
subsequently configuration (see Section 5).
Pre-requisites: see Section 4.4.7.
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