The models with 16A transfer capacity (see section 4) are equipped with one, and the models with 50A transfer capacity are equipped
with 2 analog/digital input/output ports.
These ports can be used for several purposes. One application is communication with the BMS of a lithium-ion battery.
4.4.7Auxiliary 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 allowed to operate only if the genset is running or shore power is
available.
In case of battery operation, AC-out-2 is switched off immediately. After the AC supply has become available, AC-out-2 is reconnected
with a delay of 2 minutes, this to allow a genset to stabilise prior to connecting a heavy load.
4.4.8Parallel Connection
The MultiPlus can be connected in parallel with several identical devices. To this end, a connection is established between the devices
by means of standard RJ45 UTP cables. The system(one or more Multisplus optional control panel) will require subsequent
configuration (see Section 5).
In the event of connecting MultiPlus units in parallel, the following requirements must be met:
•A maximum of six units 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.
•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 10cm 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 notpermitted.
•A battery-temperature sensor need only be connected to oneunit 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 (with 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).
•Only one remote control means (panel or switch) can be connected to the system.
4.4.9Three-phase operation
The MultiPluscan also be used in 3-phase wye (Y) configuration. To this end, a connection between the devices is made by means of
standard RJ45 UTP cables (the same as for parallel operation). The system (Multisplus an optional control panel) will require
subsequently configuration (see Section 5).
Pre-requisites: see Section 4.4.8.
Note: the MultiPlus is not suitable for 3-phase delta (Δ) configuration.
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