Following Error Margin - MCi iControl User Manual

Construction Mode

Following Error Margin

The Following error is used for fault detection purposes only. The Following error parameter
(Configuration > Drive > Safety tab) sets the allowed margin of deviation from commanded
speed, as a percentage. A Tach Error fault is generated when the difference between intended
pattern speed and speed feedback exceeds the Following error margin.
1. Verify that the Pattern (Command) and Speed Feedback signals are tracking properly.
Please refer to "Verify Pattern Command and Drive Speed Feedback" on page
2. On the Configuration > Pattern > Modes tab, verify that Standard Profile/High Speed
and Inspection Profile/High Speed parameters are set correctly for this job.
3. Verify that actual car speed on Inspection is equal to the Inspection High speed setting.
Please refer to "Calibrating Actual Car Speed" on page
4. Set the Following error parameter (Configuration > Drive > Safety tab). It is recom-
mended to perform the Tach Error Tripping Threshold Adjustment procedure at this
time. Please refer to "Tach Error Tripping Threshold Adjustment" on page
Caution
The default setting for the Following error parameter is 25%. For a car that has
been properly adjusted as described in steps 1 through 3 above, after performing the Tach
Error Tripping Threshold Adjustment, a Following Error setting of 10% is fairly typical. You
may choose to leave the Following error parameter at the default setting or higher, but keep
in mind that Following error is a percentage of speed. On a 500fpm job a 25% Following
Error allows a 125fpm contract speed deviation before a fault is generated.
2-58 Manual # 42-02-2222
2-57.
2-59.
Default setting
2-56.