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Digital Multi Control
4. System types
This chapter describes the different inverter/charger system types that the control panel can connect to.
4.1. MultiPlus system with 1 AC source
Setup is easy, simply connect the control panel to the VE.Bus system (refer to the
Inverter/charger connection [5]
chapter),
and it will automatically adapt to the system. No adjustments are required unless you want to restrict the operator's maximum AC
current setting. For this refer to the
Upper AC input limit 1 to 4 [7]
chapter.
4.2. Quattro system with 2 AC sources
If your system contains one or more Quattros, setup is easy. Simply connect the control panel to the VE.Bus system (refer to the
Inverter/charger connection [5]
chapter), and it will automatically adapt to the system.
You probably will not need to adjust any settings in the control panel. In a Quattro setup, the AC1 input takes precedence over the
AC2 input. By default, the AC2 input current limit can be overridden by the remote panel, while the AC1 input current limit remains
fixed (this can be altered in the Quattro settings).
A common setup involves connecting a generator to the AC1 input and grid power to the AC2 input. While the generator runs, the
control panel shows "AC1," and the know can not alter the AC1 input current limit. Once the generator stops and shore power is
active, the panel toggles between "AC2" and the AC current value. Turning the knob will alter the AC2 input current limit.
To cap the maximum settable current, adjust the "Upper shore limit for AC input 2" parameter. For details, see the
Upper AC input
limit 1 to 4 [7]
chapter, and refer to the
Special display feature [7]
chapter to stop the display from toggling between "AC2"
and the AC input current value.
4.3. MultiPlus system with 2 AC sources and transfer switch
When using an external transfer switch
(VE Transfer
Switch) with a MultiPlus inverter/charger system, the switch dictates which
AC source is utilised - either generator or grid power. However, the control panel itself is not aware of the chosen AC source.
To ascertain the transfer status, the control panel features a screw connector on its backside. Normally, the panel sends the AC
current set point from the knob to the inverter/charger system. But, by short-circuiting the screw terminals, the panel displays
"GEN" and sends a preset AC current limit to the inverter/charger system.
For connection advice refer to the
External transfer switch connection [5]
chapter and for configuration instructions, refer to the
Generator current limit [7]
chapter.
4.4. MultiPlus system with 2 AC sources
To create a system with multiple AC inputs, you can use multiple MultiPlus units and configure them as such, using the "VE.Bus
System Configurator" software tool. While such a system is feasible, it is advisable to first explore using Quattros. From the
control panel's perspective, building a system with Quattros or MultiPlus units does not make a difference. For further guidance,
refer to the
Quattro system with 2 AC sources [4]
subchapter.
Page 4
System types
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