User`s manual

apfiff09 marine vacon • 207
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7.12.9 Earth Fault
The earth fault protection ensures that the sum of the motor phase currents is zero. The overcurrent
protection is always working and protects the frequency converter from earth faults with high
currents.
P2.12.8.1 Earth fault protection ID703
0 = No response
1 = Warning
2 = Fault, stop mode after fault according to Stop Function
3 = Fault, stop mode after fault always by coasting
P2.12.8.2 Eart fault current limit ID1333
Maximum level for Earth current in % of the unit nominal current.
7.12.10 Cooling protection
Protection for liquid cooled units. An external sensor is connected to the drive (DI: Cooling Monitor)
to indicate if cooling liquid is circulating.
P2.12.9.1 Cooling fault delay ID751
This parameter defines the delay after which the drive goes to fault state when ooling
OK signal is missing.
P2.12.9.2 Cooling fault response ID762
In some cases it is more important to allow the drive to run even if the cooling liquid is
not circulating. Then it is possible to select warning as the response. The drive will then
continue running until its internal protection will stop it. If cooling signal loss happens on
stop state indication is not stored to fault history if previous fault is already Cooling
Fault. In Run State indication is always stored to fault history
0 = Stop State: No Action, Run State: Warning
1= Stop State: Warning, Run State: Warning
2= Stop State: Warning, Run State: Fault
3= Stop State: No Action, Run State: Fault