Rockwell Automation WebPak 3000 DC Drive Application Workbook Version 1.1 - Manual (Page 23)

Configuring the Speed Loop 3-13
SPD LOOP REFERENCE (P.295) is the composite signal configured by the various modes
listed in this section. The final value of P.295 is clamped at + or – 110% of TOP LINE
SPEED (P.020). If REVERSE DISABLE (P.015) = ON , SPD LOOP REFERENCE (P.295) is
prevented from setting a reverse reference by clamping this reference to zero.
3.4 Speed Loop Feedback
Refer to figure A.10 in Appendix A of the software manual (D2-3444) as you configure
the speed loop feedback.
þ
To configure the speed loop feedback:
▲
FEEDBACK SELECT (P.200) was set during Quick Start to select the type of
feedback signal to be used for the speed/voltage loop. Since the
WebPak 3000 drive standard design is a regenerative power bridge, a DC
tach or a dual-channel differential-output encoder is required.
þ If FEEDBACK SELECT (P.200) = DC TACH :
▲ If required, set ANALOG TACH ZERO ADJ (P.202) to remove any offset from
the analog tachometer feedback signal.
▲ If required, set ANALOG TACH GAIN ADJ (P.201) to scale the analog
tachometer feedback signal.
J 11 ANLG TACH VLT SCL (P.792) displays the position in which to set the J11
hardware jumper based on the values of GEAR IN SPEED (P.011) and ANLG
TACH VOLTS /1000 (P.203).
J 14 ANLG TACH VLT RNG (P.793) displays the position in which to set the
J14 hardware jumper based on the values of GEAR IN SPEED (P.011) and
ANLG TACH VOLTS /1000 (P.203).
See the drive hardware manual (D2-3443) for information on setting the
J11 and J14 jumpers
ANALOG TACH FEEDBACK (P.291) is the digital value of the analog
tachometer feedback input after all hardware and software scaling.
þ If FEEDBACK SELECT (P.200) = ENCODER :
The drive uses the values set during Quick Start for ENCODER PPR (P.207)
and GEAR IN SPEED (P.011).
ENCODER KIT (P.798) indicates whether or not the Pulse Encoder
(Tachometer) kit is installed in the drive and if it has passed diagnostics.
ENCODER FEEDBACK (P.292) is the digital value of the encoder after
hardware and software scaling.
!
ATTENTION: The incorrect configuration of FEEDBACK SELECT (P.200),
ANALOG TACH GAIN ADJ (P.201), and ANALOG TACH ZERO ADJ (P.202) can
cause an overspeed condition. This parameter must be configured by a
qualified person who understands the significance of configuring it
accurately. Failure to observe this precaution could result in bodily injury.
Range:-200 to 200 COUNTS P.202 = COUNTS
Range: 0.750 to 1.250 P.201 =