Trane TR200 Series Programming Manual page 161

Parameter Description
The frequency converter estimates the load on the power section by means of an inverter load counter, which
will cause a warning at 98% and a reset of the warning at 90%. At the value 100%, the frequency converter trips
and provides an alarm.
Status for the counter can be read in par.16-35
If par.14-61 Function at Inverter Overload
exceeds 98, and stay reduced until the counter has dropped below 90.7.
If par.14-62 Inv. Overload Derate Current
fluctuate between values corresponding to 110% and 95% of rated output current for the frequency converter.
14-61 Function at Inverter Overload
Option:
[0] * Trip
[1] Derate
14-62 Inv. Overload Derate Current
Range:
95 %* [50 - 100 %]
160
Inverter Thermal.
is set to Derate, the pump speed will be reduced when the counter
is set e.g. to 95% a steady overload will cause the pump speed to
Function:
Is used in case of steady overload beyond the thermal limits (110% for
60 sec.).
Choose Trip [0] to make the frequency converter trip and provide an
alarm.
Derate [1] to reduce pump speed in order to decrease the load on the
power section and allowing this to cool down.
Function:
Defines the desired current level (in % of rated output current for the
frequency converter) when running with reduced pump speed after load
on the frequency converter has exceeded the allowable limit (110% for
60 sec.).
TR200 Programming Guide