Parker AC890 Product Manual page 359

Parameter Descriptions
UP TIME
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
This diagnostic indicates if the inverse time current limit is active.
INVERSE TIME OP
This diagnostic indicates the present level of current that is allowed as a percentage of STACK CURRENT (refer to the
FEEDBACKS function block), clamped by MAX CURRENT (refer to the MOTOR PMAC 1 function block). Under normal
conditions and when not clamped by MAX CURRENT, this ranges from 110% to 200% of STACK CURRENT, depending
on the frame size and mode as described below. When the drive is limiting, this value will be the AIMING POINT clamped
by either 105% of STACK CURRENT or PERM CURRENT (refer to the MOTOR PMAC 1 function block).
In Quadratic Torque Mode:
Under normal conditions, the drive current limit is set to 110% of STACK CURRENT.
For Frames B, C & D:
Under normal conditions, the drive current limit is et to 200% of STACK CURRENT and DELAY is limited to 4
seconds.
For Mobile Frames:
Under normal conditions, the drive current limit is set to 175% of STACK CURRENT.
For Other Frame Sizes:
Under normal conditions, the drive current limit is set to 150% of STACK CURRENT.
IT WARNING
This diagnostic indicates if the reduction is acting or not.
D-68
Page
PREF: 162.04
PREF: 162.05
PREF: 162.06
PREF: 162.07
Default: 1.0 s
Default: FALSE
Default: —.00 %
Default: FALSE
890SD Standalone Drive - Frames G, H & J
Range: 0.5 to 10.0s
Range: FALSE / TRUE
Range: —.00 %
Range: FALSE/TRUE