Rockwell Automation 9329 Drive Application Software Inertia Comp Imperial Units - Manual (Page 17)

FM – Inertia Compensation
Drive Application Software – page 17 of 28
5.0 Setup / Configuration
5.1 Overview
All setup and configuration is done in the Main routine. The Inertia Compensation Function
Module is connected to the balance of the application software by placing application tag
names in the Jump to Sub-Routine (JSR) instructions. One JSR is used to call the JCalc
routine and a second JSR is used to call the JLossComp routine. When JSR instruction input
parameters are configured with tags, which are intended to be tuned by the user at
commissioning, it is recommended that the (z prefix) naming convention be used for tags of
this type.
5.2 JCalc JSR Instruction
Note: The JCalc routine and JSR instruction are only used for center winder applications. For
constant diameter applications, delete the JCalc routine and JSR instruction. If the JCalc
routine is deleted, the Total Reflected Inertia input parameter (JLossComp – In8) must be
calculated using the equation shown in the description for this input parameter as described
in section 4.
5.2.1 Input Parameters
5.2.1.1 Minimum Empty Core Reflected Inertia
Enter an application tag for the Minimum Empty Core Reflected Inertia input
parameter (JCalc – In1). If the application tag values are not in units of pound-
feet2, add a rung to the Main routine that will scale the tag value to pound-feet2.
5.2.1.2 Material Density
Enter an application tag for the Material Density input parameter (JCalc – In2). If
the application tag value is not in units of pounds per feet3, add a rung to the Main
routine that will scale the tag value to pounds per feet3.
5.2.1.3 Normalized Diameter
Enter an application tag for the Normalized Diameter input parameter (JCalc –
In3). This tag must be normalized such that the value is equal to 1.0 at minimum
empty core diameter. If the Diameter Calculator Function Module is used, enter
the tag used as the return parameter in the DiamCalc JSR instruction.
5.2.1.4 Translational-to-Rotational Conversion Constant
Enter an application tag for the Translational-to-Rotational Conversion Constant
input parameter (JCalc – In4). This conversion constant must be calculated using
the minimum empty core diameter. If the Diameter Calculator Function Module is
used, enter the tag used as a return parameter in the DiamCalc JSR instruction.
5.2.1.5 Material Width
Enter an application tag for the Material Width input parameter (JCalc – In5). If
the application tag value is not in units of inches, add a rung to the Main routine
that will scale the tag value to inches.
5.2.1.6 Gear Ratio
Enter an application tag or immediate value for the Gear Ratio input parameter
(JCalc – In6).
5.2.1.7 Motor Base Speed
Enter an application tag or immediate value for the Motor Base Speed input
parameter (JCalc – In7).
5.2.1.8 Motor Rated Torque
Enter an application tag or immediate value for the Motor Rated Torque input
parameter (JCalc – In8).