Rockwell Automation FlexPak 3000 Digital DC Drive Version 4.3 - Manual (Page 60)

5-12 FlexPak 3000 DC Drive Software Reference
5.3 Reading the Speed Loop Error Signal
The speed loop error signal is determined by subtracting SPD LOOP FEEDBACK (P.296)
from the SPD LOOP REFERENCE (P.295).
SPD LEADLAG RATIO
(P.213)
Specifies the ratio
between the low and
high break
frequencies of the
speed feedback
lead/lag block. Parameter Range: 2 to 20
Default Setting: 2
Parameter Type: Tunable
OIM Menu Path(s): Speed/Voltage Loop ( SPD ) - Tuning
For example, if this parameter is set to 10, the high break frequency is 10 times the
low break frequency (set by
SPD LEADLAG LOW FREQ ).
If SPD LEADLAG SELECT is set to BYPASS , this parameter has no effect.
SPD LEADLAG SELECT (P.216)
Determines if and
how the lead/lag
block will act on the
speed loop feedback
signal. Parameter Range: LEAD / LAG
BYPASS
LAG / LEAD
Default Setting: BYPASS
Parameter Type: Tunable
OIM Menu Path(s): Speed/Voltage Loop ( SPD ) - Speed/Voltage Loop
( SPD ) Tuning
If BYPASS is selected, the lead/lag block is bypassed and the feedback signal is
used directly by the speed loop summing junction.
SPD LOOP ERROR (P.297)
The speed loop error
signal, which is the
difference between
SPD LOOP REFERENCE
(P.295) and SPD LOOP
FEEDBACK (P.296).
Parameter Range: n/a
Default Setting: n/a
Parameter Type: Output
OIM Menu Path(s): SPD - Speed/Voltage Loop ( SPD ) Test Points
SPD LOOP FEEDBACK
(P.296)
The final
speed/voltage loop
drive feedback value
after scaling. Parameter Range: n/a
Default Setting: n/a
Parameter Type: Output
OIM Menu Path(s): SPD - Speed/Voltage Loop ( SPD ) Test Points