Bavaria VIRTESS 420 - ABL System Failure Scenarios; RS485 BUS Complete Failure; Touch-sensitive Display Failure

BAVARIA Owner’s manual
22
7.5. Possible scenarios regarding the system failure of the ABL system.
Two different failure modes of the Touchscreen BUS System are described here:
7.5.1. CompletefailureoftheRS485BUS
Oneachmodule(seenbelow)a15AmpslotservesasabackupandmaybeusedindependentlyoftheRS485-Bus.
One of the fuses may be moved manually to supply this circuit independently and permanently while overriding the
RS485BUS:ThebackupFuseishighlightedwiththeredellipseinthebelowdiagram.
7.5.2. Failureofthetouch-sensitiveDisplay
In this case all relays stay switched and connected as before the failure occurred. The relays will only be disabled if
thevoltageonthesystem(RS485BUS)isbeingswitchedoff.
7.5.3. The DC system consists of the following circuits/consumers:
Pos. Description
16 Analog box
17 Digital box
18 Mainswitchbowthruster,anchorwindlass(manual)(Option)
19 MainswitchConsumer(remotecontrol,receiver)(Batterydisconnectswitch)
20 Mainswitchengine1and2(remotecontrol,receiver)(Batterydisconnectswitch)
21 MainswitchGangway,aftplatform,sternwindlass(Sternanchor)windlass(remotecontrol,receiver)(Bat-
terydisconnectswitch)(Option)
22 Batteries(Consumer,engine;partlyoptional)
23 CockpitpanelHelmstand(Deck)