Rockwell Automation 9329 Drive Application Software - Manual (Page 24)

FM – Inertia Compensation
Drive Application Software – page 24 of 30
6.3 Offline Tuning / Startup
Verify that the number and order of JSR input parameters and JSR return parameters agree
with the JSR rung comment and section 4 of this user manual.
Verify that the data type of all JSR instruction input and return parameters agree with the data
type described in the JSR instruction rung comment and section 4 of this user manual. If
immediate values are used for input parameters, the immediate value data type can be
controlled by using or excluding a decimal point. For example, if the JSR instruction input
parameter is designated as type REAL, and the desired value is zero, use “0.0” in the JSR
instruction input parameter. An Input entered a “0” is used as an INTEGER value.
Check the value of all JSR instruction input parameter tags. If the tag is calculated by other
Logix instructions, verify that the tag will be calculated in the correct engineering units. If the
tag is not calculated by other Logix instruction, preset the tag per section 4 of this user
manual.
6.4 Online Tuning / Startup
6.4.1 Measured Diameter Enable True
With the Logix controller in run, verify that the Measured Diameter return parameter
(DiamCalc – Ret5) agrees with the actual diameter.
If the Measured Diameter return parameter (DiamCalc – Ret5) is not accurate:
1. Check that the value of the following input parameters:
• Measured Diameter Input (DiamCalc - In10)
• Minimum Measured Diameter (DiamCalc - In11)
• Maximum Measured Diameter (DiamCalc - In12)
• Minimum Measured Diameter (DiamCalc - In13)
• Maximum Measured Diameter (DiamCalc - In14)
Preset the Diameter Calculator to the actual diameter drive (The diameter can only
be preset with the Diameter Calculator Enable input parameter (DiamCalc – In1)
false.) and run the drive (The diameter rate limit is zero when the motor speed is
zero.) Verify that Calculated Diameter return parameter (DiamCalc - Ret1) tracks the
actual diameter.
If the Calculated Diameter return parameter (DiamCalc - Ret1) does not change with
actual diameter:
1. Verify that the value of the Diameter Increase Enable, Diameter Decrease
Enable and the Diameter Rate Limit (DiamCalc – In17, In18, and In19) will allow
the diameter to ramp to the measured value.
2. Verify that the Motor Speed and Gear Ratio input parameters (DiamCalc – In5,
In6) are entered correctly.
6.4.2 Measured Diameter Enable False (typical configuration)
Preset the Diameter Calculator to the actual diameter (the diameter can only be
preset with the Diameter Calculator Enable input parameter (DiamCalc – In1) false).
After diameter preset is complete, set the Diameter Calculator Enable input true.
Run the drive at a line speed greater than the Diameter Calculator Enable Threshold
(DiamCalc – In2). Verify that the Calculated Diameter return parameter (DiamCalc -
Ret1) tracks the actual diameter.
If the Calculated Diameter return parameter (DiamCalc - Ret1) does not change with
actual diameter:
1. Verify that the Diameter Calculator Enable input parameter (DiamCalc – In1) is
true.
2. Verify that the value of the Diameter Increase Enable, Diameter Decrease Enable
and the Diameter Rate Limit (DiamCalc – In17, In18, and In19) will allow the
diameter to ramp to the measured value.
3. Verify that the Motor Speed and Gear Ratio input parameters (DiamCalc – In5,
In6) are entered correctly.