Specifications

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3BUS 208 000 R1301 81Platform Tuning
Basic Tuning
The basic tuning portion of Scanning Platform Setup will calibrate the position
encoder and tune the controlling software (servo object) for the Scanning Platform
drive motor.
Head position calibration will be achieved by entering a position measurement into
the ft utility at the Service Workstation. The calibration utility will determine the
measured position on the Scanning Platform.
The servo tuning is an automated routine that measures the response of the Scanning
Platform to a series of velocity targets initiated by the controlling software. The
servo software object is then calibrated to the response of the motor controller setup.
The response is affected by the tuning of the motor controller hardware, so the
Motor Controller Setup procedure must be performed before basic tuning.
This procedure requires you to jog the Scanning Platform head package and take
one dimension measurement on the Scanning Platform and enter it at the Service
Workstation. The automated master controller motor controller tuning portion of
this procedure will move the head package to several positions on the Scanning
Platform.
Before proceeding with this phase, make certain the Far
Limit Switch has been mechanically adjusted to prevent
the head package from hitting an obstruction, such as
the machine ropes.
1. At the Service Workstation, start the ft utility by typing ft at the $$ prompt.
2. In the ft main menu, select MODIFY Values, selection 1.
3. Select Head Position and Motor Controller Calibration, selection 1, from the
MODIFY Values menu.
The ft utility will display the current tuning values as shown in Figure 5-6 on
page 82.