Rockwell Automation WebPak 3000 DC Drive Application Workbook Version 1.1 - Manual (Page 44)

6-4 WebPak 3000 DC Drive Application Workbook, Version 1.1
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NORM ROLL DIAMETER (P.131) is the calculated roll diameter normalized to 1.000 at
EMPTY CORE DIAMETER (P.830). A limit block and a rate block condition the final value
of NORM ROLL DIAMETER (P.131), which is used as an input parameter in other drive
tasks.
6.2.1 Validating the Setup of the Diameter Calculator
þ
To validate the setup and operation of the diameter calculator without an
actual buildup of a variable diameter roll:
▲
Set DIAMETER CALC ENABLE (P.826) to DISABLE .
This will activate the use of DIAMETER REGISTER (P.874) as an alternative input
to the CONVERT TO ROTATIONAL SPEED multiplier block located in the speed
regulator block diagram.
With the drive running at a speed set by SPD LOOP REFERENCE (P.295), and
with DIAMETER REGISTER (P.874) set for various simulated diameters from core
to a maximum of 20 inches, the diameter calculator will respond by changing
the value of
DIAMETER CALC OUTPUT (P.132).
▲
Set DIAMETER REGISTER (P.874).
Note that P.874 is a volatile parameter that will reset to its default value at
power up.
Range: ENABLE , DISABLE P.826 =
',6$%/(
Range: 1.000 to 20.000 P.874 = INCHES