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Victron MultiPlus 12 500 20-16 Manual

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4.4 Optional Connections
A number of optional connections are possible:
Undo the four screws at the front of the enclosure and remove the front panel.
4.4.1 Second Battery
The Multi has a connection (+) for charging a starter battery. For connection see appendix A.
Trickle charge output is protected by automatic overcurrent & overload protection (trip current
1A Imax= 5,5A)
4.4.2 Temperature Sensor
The temperature sensor supplied with the product may be used for temperature-compensated
charging. The sensor is insulated and must be mounted on the battery minus pole. Default
output voltages for Float and Absorption are at 25°C. In adjust mode temperature
compensation is disabled.
4.4.3 Remote Control
The product can be remotely controlled in two ways:
- With an external 3 position switch
- With a Multi Control Panel
Please see section 5.5.1. for appropriate DIP switch settings.
4.4.4. Programmable relay
The Multi is equipped with a multi-functional relay that by default is programmed as an alarm
relay. The relay can be programmed for all kinds of other applications however, for example to
start a generator (VEConfigure software needed).
4.4.5 Parallel Connection (800VA and 1200VA models only, see appendix C)
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 MultiPlus units plus 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 10 cm for ventilation purposes under,
above and beside the units.
- UTP cables must be connected with a Splitter from one unit to the other (and to the remote panel).
Connection/splitter permitted.See Appendix C
- 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
(with a maximum of one sensor per MultiPlus). Temperature compensation during battery charging
responds to the sensor indicating the highest temperature.
- Only one remote control means (panel or switch) can be connected to the system.
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