National Instruments NI EDIDS-2400 Series, User Manual, Page: 122 / 314

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Detail: Specifies Derivative time for the throttle control PID function while
PosSetpoint_ChX
is less than
LHPsn_Out_ChX Limp Home position. The derivative time is proportional to the electro-mechanical time-constant
of the throttle body. Larger times intensify the derivative action. When TD is set to zero, the derivative action is
disabled.
LHPsnBand_ChX
Tip Strip: H-Bridge channel 1 limp home angle error threshold
Units: % or deg
Detail: Limp-home compensation uLH_ChX is updated when PosSetpoint_ChX is within LH Position Band of
LHPsn_Out_ChX (above or below).
uLH_ChX
Tip Strip: H-Bridge channel 1 limp home voltage addition
Units: V
Detail: Voltage added or subtracted to the PID output when Position Setpoint is in the vicinity of LHPsn_Out_ChX .
As Position Setpoint moves through the limp-home region, ULHc_ChX is updated to a positive or negative value
(negative=closing force, positive=opening force) and added to the PID output in order to assist throttle control
through the region.
ULHLag_ChX
Tip Strip: H-Bridge channel 1 lag filter time applied to limp home compensation
Units: s (seconds)
Detail: Specifies lag filter time applied to the limp-home compensation. A lag time prevents uLHc_ChX from
reversing directions too fast.
US_ChX