Rockwell Automation WebPak 3000 DC Drive Application Workbook Version 1.1 - Manual (Page 43)

Configuring the Diameter Calculator 6-3
The remaining inputs are user configurable.
þ
To configure the diameter calculator function:
▲
Set WINDER CORE DIA 1 (P.822).
▲
Set WINDER CORE DIA 2 (P.824).
▲
Set WINDER CORE DIA 3 (P.825).
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Set EMPTY CORE DIAMETER (P.830).
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Set FULL ROLL DIAMETER (P.125).
▲
Set DIAMETER ACCEL RATE (P.823). DIAMETER ACCEL RATE (P.823) sets the
maximum rate of change to ramp the diameter calculator output for a winder
application from
EMPTY CORE DIAMETER (P.830) to FULL ROLL DIAMETER (P.125).
▲
Set DIAMETER DECEL RATE (P.827). DIAMETER DECEL RATE (P.827) sets the rate
of change to ramp the diameter calculator output from FULL ROLL DIAMETER
(P.125) to EMPTY CORE DIAMETER (P.830) for an unwind application.
▲
Set DIAMETER CALC ENABLE (P.826) to ENABLE to activate the diameter
calculator function.
When P.826 is set to DISABLE , the calculated value of NORM ROLL DIAMETER (P.131)
reverts to a value determined by the parameter DIAMETER REGISTER (P.874). This
supports two functions:
• When the WebPak 3000 internal diameter calculator is used, the diameter register
can be used to validate the setup of the diameter calculator (see section 6.2.1).
• When a network card is installed, the user has the option of providing an external
diameter calculator and use the diameter register as the diameter input over the
network.
The diameter calculator has three outputs:
•
ROLL DIAMETER (P.865) is a read-only parameter that is the value of the calculated
roll diameter in inches.
•
DIAMETER ANALOG (P.821) is the analog output of the diameter calculator scaled from
0 to 4095. At empty core, the parameter value is 0. At full roll diameter, it is 4095.
Range: 1.00 to 120.00 INCHES P.822 = INCHES
Range:1.00 to 120.00 INCHES P.824 = INCHES
Range: 1.00 to 120.00 INCHES P.825 = INCHES
Range: 1.00 to 30.00 INCHES P.830 = INCHES
Range: P.830 to 120.00 INCHES P.125 = INCHES
Range: 0.000 to 1.000 INCHES / SECOND P.823 = IN / SEC
Range: 0.000 to 1.000 INCHES / SECOND P.827 = IN / SEC
Range: ENABLE , DISABLE P.826 =