
Core Software Operation
ADDvantage-32 PLUS ● AC to DC Power Converter
3-34
Several other parameters are provided for current loop operation. For most applications,
these parameters do not change.
Y***:IARM PI CTL - Enables or disables the proportional and integral gain in the
current loop. (Normally enabled.)
Y***:IARM FFWD - Enables or disables the feed forward gain in the current
loop. Feed forward gain enhances the response of the loop
(normally enabled) and enables the drive to start into a
spinning motor.
Y***:Ia RATE SEL - Selects the value used for armature current rate of change
limit. Usually left = to X***:IARM R-LIM unless a non-
linear value is required.
X***:MAX ARM ALP - Sets the maximum allowable angle at which the armature
SCR's fire. This parameter should never be changed
without first consulting the factory.
X***:MIN ARM ALP - Sets the minimum allowable angle at which the armature
SCR's fire. This parameter should never be changed
without first consulting the factory.
X***:IARM D-BAND - Dead band range entered in percent motor current is used in
situations where a motor is jittery at zero speed.
X***:IARM R-LIM - This is the allowable rate at which the current reference
changes per sample time (2.77 ms on 60 Hz systems). This
value is entered in percent motor current and is normally
100%.
3.17 FIELD CURRENT LOOP PARAMETERS
X*** Parameters Y*** Parameters A*** Parameters D*** Parameters
X***:MAX FLD ALP Y***:FLD B-TYPE A***:FLD CURRENT D***:FLD LOSS PT
X***:MIN FLD ALP Y***:FLD V-CMD A***:FLD CURRNT D***:FLD ECON PT
X***:FLD TX RAT A***:FLD VOLTS D***:FLD TIMER
X***:FLD LOSS A***:VFLD CMD D***:FLD OK PT
X***:FLD PHASE A***:FLD ALPHA D***:FLD ENABLE
X***:IFLD PGAIN A***:IFLD CMD D***:FLD CTL LOS
X***:IFLD IGAIN
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