Rockwell Automation FlexPak 3000 Digital DC Drive Version 4.3 - Manual (Page 53)

Configuring the Speed/Voltage Loop 5-5
IR COMPENSATION
(P.206)
Sets the armature
voltage loss
compensation value
used when the drive
is configured as a
voltage regulator. Parameter Range: 0 to 50%
Default Setting: 0%
Parameter Type: Tunable
OIM Menu Path(s): Speed/Voltage Loop ( SPD ) - Speed/Voltage Loop
( SPD ) Tuning
Quick Start
Field - Field Current Regulator - Field Loop Tuning
This parameter is also used by the Field Current Regulator kit to set the
field-weakened threshold. See section 8.3.
IR COMPENSATION is normally determined from the motor data sheet. It should be
set to the percent IR drop of the motor.
If this data is not available on the motor data sheet, you can set this empirically so
that the no-load and full-load speeds are as close as possible when operating as a
voltage regulator.
IR COMPENSATION TP
(P.290)
The level of IR
COMPENSATION being
subtracted from the
measured armature
voltage.
Parameter Range: n/a
Default Setting: n/a
Parameter Type: Output
OIM Menu Path(s): Speed/Voltage Loop ( SPD ) - Speed/Voltage Loop
( SPD ) Test Points
The value of IR COMPENSATION TP is determined by the equation:
MOTOR RATED ARM VOLTS
(P.009)
The rated armature
voltage as it is listed
on the motor
nameplate. Parameter Range: 160 to 675 volts
Default Setting: 240 volts
Parameter Type: Configurable
OIM Menu Path(s): Speed/Voltage Loop ( SPD ) - Speed/Voltage Loop
( SPD ) Feedback
Quick Start
This must always be set properly, regardless of the setting of FEEDBACK SELECT
(P.200).
IR COMPENSATION TP
IR COMPENSATION CML FEEDBACK • MAXIMUM CURRENT •
10 000 ,
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