Parker AC890 Product Manual page 391

PHASE INCH
SETUP::PHASE CONTROL::PHASE INCH
CLOSED-LOOP VEC Motor Control Mode only.
Used with the external registration controller to advance/retard the Load reference position with respect to the Master position.
Parameter Descriptions
ADVANCE
Command to Inch the load forwards. While TRUE, counts are added to the error calculator at a rate given by RATE. Note: if
both ADVANCE and RETARD are TRUE then no action is taken.
RETARD
Command to Inch the load backwards. While TRUE, counts are subtracted from the error calculator at a rate given by RATE.
RESET
This parameter, when TRUE, resets the Inch Offset to zero. The block may only be reset while the position loop is not
operating.
RATE
Speed of the Inch in load rev/s and the rate at which counts are added to the error calculator. A rate of 0.05 with a system
scaled in revolutions would cause the drive to advance at a rate of 0.05 revolutions a second with respect to the master.
RATE SCALE
Gain applied to Rate to allow fine control of Inch Rate. This allows fine control over the inch rate by scaling the value of
RATE. Actual Rate = RATE x RATE SCALE
OFFSET
This diagnostic shows the position offset generated by the block (1.0 = 1 load mechanical revolution). This output is persistent.
ACTIVE
This diagnostic display True while Advance or Retard actions are active.
D-100
Page
PREF: 108.01
PREF: 108.02
PREF: 108.09
PREF: 108.03
PREF: 108.08
PREF: 108.10
PREF: 108.04
Default: FALSE
Default: FALSE
Default: FALSE
Default: 0.1000
Default: 1.000
Default: —.xxxx
Default: FALSE
Range: FALSE / TRUE
Range: FALSE / TRUE
Range: FALSE / TRUE
Range: 0.0001 to 30.0000
Range: 0.001 to 30.000
Range: —.xxxx
Range: FALSE / TRUE
890SD Standalone Drive - Frames G, H & J