Rockwell Automation FlexPak 3000 Digital DC Drive Version 4.3 - Manual (Page 54)

5-6 FlexPak 3000 DC Drive Software Reference
5.2.2 Configuring AC or DC Analog Tachometer Feedback
You only need to configure these parameters if your feedback device is an AC or DC
analog tachometer.
If FEEDBACK SELECT is set to DC TACH , feedback is from a DC tachometer. (See the
hardware manual and your tachometer manual for wiring information.)
If FEEDBACK SELECT (P.200) is set to AC TACH , feedback is from an AC tachometer
connected to an AC Tachometer Feedback kit. See the AC Tachometer Feedback kit
manual for information.
The gain and zero parameters for the analog tachometer are a method of eliminating
any offset introduced by the tachometer. You only need to set these parameters if you
need to adjust the tachometer feedback value.
The analog tachometer block diagram is shown in figure 5.3.
Figure 5.3 – AC or DC Analog Tachometer Feedback Block Diagram
!
ATTENTION: The incorrect configuration of these parameters can cause
an overspeed condition. These parameters must be configured by a
qualified person who understands the significance of configuring them.
Failure to observe this precaution could result in bodily injury.
To Figure 5.1, Speed
Loop Block Diagram
ANALOG TACH FEEDBACK (P.291)
The digital value of
the analog
tachometer feedback
input after all
hardware and
software scaling. For
use with analog
tachometer feedback
(AC or DC) only. 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
Speed/Voltage Loop ( SPD ) Tuning - Speed/Voltage
Loop ( SPD ) Feedback