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6.4.1 Special display feature
When you have an extended VE.Bus system (or a Quattro system) and you use more than 1
AC input you might come across the following situation:
Assuming you use two AC inputs. You would like to give the generator priority over the shore
so you connect the generator to AC input 1. You do not want the user to adapt the current limit
set point of the generator so in VEConfigure2 you uncheck the ‘overruled by remote’ checkbox
for the current limit setting for AC input 1.
You connect the shore current to AC input 2. For AC Input 2 you leave the ‘overruled by
remote’ checkbox checked.
The DMC will then behave as follows:
If the generator is selected the DMC displays
.
When the generator is switched off and shore current is applied, the DMC will display the set
point for AC input 2 alternating with the AC input identification
.
This alternating might not be what you want or expect. There is only one current limit set point
that the user can change! When the other AC input is selected the display will always display
. It would be sufficient to display the current limit value when AC input 2 is selected
because that is enough indication for the operator that the system has switched to shore
current.
To achieve this, all but one of the “Upper Shore limits” must be programmed to zero.
So in this example the limits for AC1, AC3 and AC4 must be programmed to zero. The display
will then not alternate between
and the set point for AC2.
Summary: Setting all but one of the “Upper Shore limits” to zero will stop the alternating of the
display.
6.5 Configuration examples
Two examples are given to help you understand the setting of the parameters.
Example 1:
Two VE.Bus Multis 16A/230V + 4kVA gen. (3000 rpm) + external transfer switch.
Because this is a VE.Bus system the scaling factor does not need to be set.
A 4kVA generator can supply a maximum current of 17,4A. Using the 70% safety margin we will
set the generator current to 12A. To set the configuration, do the following:
1) Press and hold the configuration button until the bottom LED
in the left column starts flashing.
This means you entered the configuration mode and you can change the scaling factor. As said
this parameter can be ignored in case of VE.Bus Multis.
2) Press the button to go to the next setting. The lower left LED will turn on indicating that the
generator current can be set.
3) Turn on the knob until the display indicates 12.
4) Press the button to advance to the “Upper Shore limit for AC input 1” setting.
5) If you want the maximum shore current the operator can set to be lower than 32 Amps you can
change this value.
6) Since the next 3 parameters (Upper Shore limit for AC input 2, 3 and 4) need not to be
configured you can press the button 4 times to step through the settings and finalize the
configuration.
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