Parker AC890PX Series, Engineering Reference

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A p p e n d i x D : P r o g r a m m i n g
D-65
AC890PX AC Drive
Parameter Descriptions
AIMING POINT PREF: 162.01 Default: 105.00 % Range: 50.00 to 105.00%
Determines the final level of the inverse time current limit after a period of prolonged motor overload
DELAY PREF: 162.02 Default: 4.0 s Range: 0.5 to 4.0s
Determines the maximum allowed overload duration before inverse time current limit action is taken. This value is based on 200% overload.
DOWN TIME PREF: 162.03 Default: 1.0 s Range: 0.5 to 2.0s
Determines the rate at which the inverse time current limit is ramped to the AIMING POINT after a period of prolonged overload.
UP TIME PREF: 162.04 Default: 1.0 s Range: 0.5 to 2.0s
Determines the rated at which the inverse time current limit is ramped back to the minimum value between 200% of permanent drive current and
MAX CURRENT (refer to MOTOR PMAC 1 Function Block) once the overload is removed.
IT LIMITING PREF: 162.05 Default: FALSE Range: FALSE / TRUE
This diagnostic indicates if the inverse time current limit is active.
INVERSE TIME OP PREF: 162.06 Default: —.00 % Range: —.00 %
This diagnostic indicates the present level of current that is allowed by the associated motor.
If the MAX CURRENT is higher than the drive permanent current, this value is more than 100%.
If the MAX CURRENT is lower than the drive permanent current; this value is less than 100%.
IT WARNING PREF: 162.07 Default: FALSE Range: FALSE/TRUE
This diagnostic indicates if the reduction is acting or not.