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14-53 Fan Monitor
Option:
Function:
Select which reaction the frequency converter should take in case a fan fault is detected.
[0]
Disabled
[1] *
Warning
[2]
Trip
2.13.8 14-6* Auto Derate
This group contains parameters for derating the frequency converter in case of high temperature.
14-60 Function at Overtemperature
Option:
Function:
[0]
Trip
[1] *
Derate
If either heatsink or control card temperature exceeds a programmed temperature limit, a warning
will be activated. If the temperature increases further, select whether the frequency converter
should trip (trip locked) or derate the output current.
Trip
[0]: The frequency converter will trip (trip locked) and generate an alarm. Power must be cycled
to reset the alarm, but will not allow restart of the motor until the heat sink temperature has dropped
below the alarm limit.
Derate
[1]: If the critical temperature is exceeded the output current will be reduced until the al-
lowable temperature has been reached.
2.13.9 No Trip at Inverter Overload
In some pump systems, the frequency converter has not been sized properly to yield the current needed in all points of the operational flow-head
characteristic. At these points, the pump will need a current higher than the rated current of the frequency converter. The frequency converter can yield
110% of the rated current continuously for 60 sec. If still overloaded, the frequency converter will normally trip (causing the pump to stop by coasting)
and provide an alarm.
VLT
®
AQUA Drive Programming Guide
2 Parameter Description
MG.20.O4.02 - VLT
®
is a registered Danfoss trademark
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