TUFFA TANKS 30000VBFS - MC Box Fuel Management System; MC Box Electrical Connections (AC & DC Versions)

30 31
7. OPERATION OF THE SYSTEM 7. OPERATION OF THE SYSTEM
TheMCBOXisequippedwith3junctionboxes.Thesecaneasilybeaccessedbyopeningthe
doortowherethescrewterminalsfortheexternalcableconnectionsarelocated.
Theconnectionsthatneedtobemadevaryaccordingtothemodel(ACorDC):
AC Versions:
Inputs Outputs Note
ACmainssupply ACmotorpowerthesame
voltageasthemains-
Voltage:230Vacor110Vac,
dependingonthemaximum
powerofthepluggablemotors:
•230Vacversion
=1400W
•110Vacversion
=750W
Nozzlecontact:
cleancontact:Openwith
nozzlereplacedandClosed
whennozzledispensing
Levelcontact:
cleancontact:Openwith
nozzleinnormalconditions
andClosedbelowthe
minimumowlevel
Pulsemeterinput:
cleancontactorOpen
Collectoroutputsignal,with60
Hzmaximumfrequencyand
between20%and80%duty
cycle
TheRS485datalinetothePC
(optional)
WARNING
Beforeaccessingtheelectricalparts,besurethatyouhavedisconnectedallofthegeneral
switchesthatpowero󰀨thedevice.
DC Versions:
Inputs Outputs Note
DCPowerSupply DCmotorpoweristhe
sameasthesupply
voltage
Voltage:12Vdcor
24Vac,dependingonthe
maximumpowerofthe
pluggablemotors:
•12Vdcversion
=600W
•24Vdcversion
=600W
PowerinputWITHIGNITIONON.
GiventheDCsystems’highpower
absorption,themotorshouldbe
poweredwhilethebatteryisbeing
recharged
Byremovingajumperand
insertingthe“inignition”
contactinitsplace,
theelectronicscanbe
poweredonlywhenthe
vehicleis
switchedon
Nozzlecontact:
cleancontact:Openwithnozzle
replacedandClosedwhennozzle
dispensing
Levelcontact:
cleancontact:Openwithnozzlein
normalconditionsandClosedbelow
theminimumowlevel
Pulsemeterinput:
cleancontactorOpenCollector
outputsignal,with60Hzmaximum
frequencyandbetween20%and
80%dutycycle
TheRS485datalineto
thePC(optional)